Michael Hren
Associate Professor/Earth Sciences
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Scholarly Contributions
355 Scholarly Contributions
, (2001). A combined flood surface and geochemical analysis of metal fluxes in a historically mined region: A case study from the New World Mining District, Montana, Environmental Geology, vol. 40, iss. Issue 11-12, 10.1007/s002540100366
Research Type: Journal Article
A combined flood surface and geochemical analysis of metal fluxes in a historically mined region: a case study from the New World Mining District, Montana
Michael Hren,
, (2001). A combined flood surface and geochemical analysis of metal fluxes in a historically mined region: a case study from the New World Mining District, Montana, Environmental Geology, vol. 40, iss. 12-Nov, pp. 1334--1346, Springer-Verlag
Research Type: Journal Article
HEC-RAS Flood Surface Modeling and Geochemical Analysis: A Combined Approach to Understanding the Distribution of Metals in Overbank Sediments: a Case Study from Fisher Creek, New World Mining District, MT
Michael Hren
, (2001). HEC-RAS Flood Surface Modeling and Geochemical Analysis: A Combined Approach to Understanding the Distribution of Metals in Overbank Sediments: a Case Study from Fisher Creek, New World Mining District, MT, Dartmouth College
Research Type: Other Scholarly Work
Os isotopes, deep-rooted mantle plumes and the timing of inner core formation
Michael Hren,
, (2002). Os isotopes, deep-rooted mantle plumes and the timing of inner core formation, Meteoritics and Planetary Science Supplement, vol. 37, A98
Research Type: Journal Article
Re--Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle
Michael Hren,
, (2002). Re--Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle, Nature, vol. 419, iss. 6908, pp. 705--708, Nature Publishing Group
Research Type: Journal Article
Re-Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle
, (2002). Re-Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle, vol. 419, iss. 6908, pp. 705-8, Nature, 0028-0836
Research Type: Journal Article
A HYDROGEN ISOTOPE PALEOCLIMATE RECONSTRUCTION OF THE NORTHERN ROCKY MOUNTAINS FROM IRON OXY-HYDROXIDE CHRONOSEQUENCES
Michael Hren,
, (2003). A HYDROGEN ISOTOPE PALEOCLIMATE RECONSTRUCTION OF THE NORTHERN ROCKY MOUNTAINS FROM IRON OXY-HYDROXIDE CHRONOSEQUENCES
Research Type: Conference Proceedings
An oxygen and hydrogen isotope record of Holocene climate change in the northern Rocky Mountains from hydrous iron-oxide chronosequences.
Michael Hren,
, (2003). An oxygen and hydrogen isotope record of Holocene climate change in the northern Rocky Mountains from hydrous iron-oxide chronosequences., vol. 2003, iss. 2003, GC12A--0146
Research Type: Conference Proceedings
OXYGEN AND HYDROGEN ISOTOPE RATIOS OF CENOZOIC SMECTITE SUGGEST LONG-STANDING SIMILAR-TO-MODERN ATMOSPHERIC CIRCULATION PATTERNS IN WESTERN NORTH AMERICA
Michael Hren
, (2003). OXYGEN AND HYDROGEN ISOTOPE RATIOS OF CENOZOIC SMECTITE SUGGEST LONG-STANDING SIMILAR-TO-MODERN ATMOSPHERIC CIRCULATION PATTERNS IN WESTERN NORTH AMERICA
Research Type: Conference Proceedings
Osmium and helium isotopic evidence against the standard stratification model of Earth's mantle
, (2003). Osmium and helium isotopic evidence against the standard stratification model of Earth's mantle, Earth and Planetary Science Letters, iss. 208, pp. 197--204
Research Type: Journal Article
Michael Hren
, (2003). Are high 3He/4He ratios in oceanic basalts an indicator of deep-mantle plume components?, Earth and Planetary Science Letters
Research Type: Journal Article
Wet climatic episodes are known to have prevailed in the Egyptian Sahara several times during the late Quaternary, most recently during the Holocene 8000 yr ago. Earlier wet episodes have been recognized as having occurred during the past 300,000 yr and have been dated by U-series methods in speleothems and in lake travertines. We show here that the times of enhanced groundwater movement can also...
Michael Hren,
, (2004). Wet climatic episodes are known to have prevailed in the Egyptian Sahara several times during the late Quaternary, most recently during the Holocene 8000 yr ago. Earlier wet episodes have been recognized as having occurred during the past 300,000 yr and have been dated by U-series methods in speleothems and in lake travertines. We show here that the times of enhanced groundwater movement can also..., Quaternary Research, vol. 61, iss. 1, pp. 119--121
Research Type: Journal Article
U-Pb zircon constraints on the tectonic evolution of southeastern Tibet, Namche Barwa area
Michael Hren,
, (2004). U-Pb zircon constraints on the tectonic evolution of southeastern Tibet, Namche Barwa area, American Journal of Science, vol. 304, iss. 10, pp. 889--929, American Journal of Science
Research Type: Journal Article
Oxygen isotope records of goethite from ferricrete deposits indicate regionally varying Holocene climate change in the Rocky Mountain region, USA
Michael Hren,
, (2004). Oxygen isotope records of goethite from ferricrete deposits indicate regionally varying Holocene climate change in the Rocky Mountain region, USA, Quaternary Research, vol. 61, iss. 1, pp. 64--71, No longer published by Elsevier
Research Type: Journal Article
Spatial and temporal variation of Cenozoic surface elevation in the Great Basin and Sierra Nevada
Michael Hren,
, (2004). Spatial and temporal variation of Cenozoic surface elevation in the Great Basin and Sierra Nevada, American Journal of Science, vol. 304, iss. 10, pp. 862--888, American Journal of Science
Research Type: Journal Article
Michael Hren
, (2004). Oxygen isotope records of goethite from ferricrete deposits indicate regionally varying Holocene climate change in the Rocky Mountain region, U.S.A, Quaternary Research
Research Type: Journal Article
Tectonic Control of Chemical Weathering and CO2 Drawdown in a Steady State Landscape
, (2005). Tectonic Control of Chemical Weathering and CO2 Drawdown in a Steady State Landscape, vol. 2005, iss. 2005, T32C--08
Research Type: Conference Proceedings
Chemical weathering of steady-state landscapes
, (2005). Chemical weathering of steady-state landscapes, vol. 2005, iss. 2005, V43B--1569
Research Type: Conference Proceedings
The Cenozoic Rise and Fall of the Western United States
Michael Hren,
, (2005). The Cenozoic Rise and Fall of the Western United States, vol. 2005, iss. 2005, T31E--05
Research Type: Conference Proceedings
Michael Hren
, (2006). Stable isotopic evidence for a pre-late Miocene elevation gradient in the Great Plains - Rocky Mountain region, USA, Special Paper of the Geological Society of America
Research Type: Book
Tephras and Soils as Terrestrial Paleoclimate Proxies in Large Igneous Provinces: Examples From Greenland and Iceland
, (2006). Tephras and Soils as Terrestrial Paleoclimate Proxies in Large Igneous Provinces: Examples From Greenland and Iceland, vol. 2006, iss. 2006, T11A--0426
Research Type: Conference Proceedings
CHEMICAL WEATHERING, EROSION, AND CO2 CONSUMPTION IN THE SOUTHERN TIBETAN PLATEAU AND EASTERN SYNTAXIS OF THE HIMALAYA: MAJOR ION CHEMISTRY OF THE YARLUNG TSANGPO/BRAHMAPUTRA RIVER
Michael Hren
, (2006). CHEMICAL WEATHERING, EROSION, AND CO2 CONSUMPTION IN THE SOUTHERN TIBETAN PLATEAU AND EASTERN SYNTAXIS OF THE HIMALAYA: MAJOR ION CHEMISTRY OF THE YARLUNG TSANGPO/BRAHMAPUTRA RIVER
Research Type: Conference Proceedings
Stable isotope and rare earth element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa
Michael Hren,
, (2006). Stable isotope and rare earth element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa, Geochimica et cosmochimica acta, vol. 70, iss. 6, pp. 1457--1470, Pergamon
Research Type: Journal Article
Stable isotopic evidence for a pre--late Miocene elevation gradient in the Great Plains--Rocky Mountain region, USA
Michael Hren,
, (2006). Stable isotopic evidence for a pre--late Miocene elevation gradient in the Great Plains--Rocky Mountain region, USA, Geological Society of America Special Papers, vol. 398, pp. 309--319, Geological Society of America
Research Type: Journal Article
Michael Hren
, (2006). Stable isotope and Rare Earth Element evidence for recent ironstone pods within the Archean Barberton greenstone belt, South Africa, Geochimica et Cosmochimica Acta
Research Type: Journal Article
The Role of Tectonics, Climate, and Biology in Chemical Weathering and Carbon Dioxide Consumption
Michael Hren
, (2007). The Role of Tectonics, Climate, and Biology in Chemical Weathering and Carbon Dioxide Consumption, ProQuest
Research Type: Book
Mercury biomagnification in polar bears (Ursus maritimus)
Michael Hren,
, (2007). Mercury biomagnification in polar bears (Ursus maritimus), vol. 2007, iss. 2007, B51C--0600
Research Type: Conference Proceedings
Steady state chemical weathering in an eroding landscape
, (2007). Steady state chemical weathering in an eroding landscape, vol. 71, iss. 71, A158--A158
Research Type: Conference Proceedings
Major ion chemistry of the Yarlung Tsangpo--Brahmaputra river: chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya
Michael Hren,
, (2007). Major ion chemistry of the Yarlung Tsangpo--Brahmaputra river: chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya, Geochimica et Cosmochimica Acta, vol. 71, iss. 12, pp. 2907--2935, Pergamon
Research Type: Journal Article
Michael Hren
, (2007). The relationship between tectonic uplift and chemical weathering rates in the Washington Cascades: Field measurements and model predictions, American Journal of Science
Research Type: Journal Article
Michael Hren
, (2007). Major ion chemistry of the Yarlung Tsangpo-Brahmaputra river: Chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya>, Geochimica et Cosmochimica Acta
Research Type: Journal Article
The relationship between tectonic uplift and chemical weathering rates in the Washington Cascades: field measurements and model predictions
Michael Hren,
, (2007). The relationship between tectonic uplift and chemical weathering rates in the Washington Cascades: field measurements and model predictions, American Journal of Science, vol. 307, iss. 9, pp. 1041--1063, American Journal of Science
Research Type: Journal Article
Chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya
Michael Hren,
, (2007). Chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya, Geochimica et Cosmochimica Acta, vol. 71, iss. 15, A419
Research Type: Journal Article
Paleoelevation Reconstruction of the Sierra Nevada from Compound-Specific Stable Isotopes of Fossil Leaves
Michael Hren
, (2008). Paleoelevation Reconstruction of the Sierra Nevada from Compound-Specific Stable Isotopes of Fossil Leaves
Research Type: Conference Proceedings
Reconstructions of Climatic and Topographic Gradients in the Sierra Nevada during the early Eocene using compound-specific stable isotopes and organic molecular temperature proxies
, (2008). Reconstructions of Climatic and Topographic Gradients in the Sierra Nevada during the early Eocene using compound-specific stable isotopes and organic molecular temperature proxies, vol. 2008, iss. 2008, PP32A--08
Research Type: Conference Proceedings
Environmental controls on the distribution of branched GDGTs in soils: Implications for paleoenvironmental reconstruction
, (2009). Environmental controls on the distribution of branched GDGTs in soils: Implications for paleoenvironmental reconstruction, vol. 2009, iss. 2009, PP13B--1410
Research Type: Conference Proceedings
A continental record of climatic change and carbon cycle dynamics during the Middle Eocene Climatic Optimum
, (2009). A continental record of climatic change and carbon cycle dynamics during the Middle Eocene Climatic Optimum, vol. 2009, iss. 2009, PP43C--08
Research Type: Conference Proceedings
Oxygen and hydrogen isotope evidence for a temperate climate 3.42 billion years ago
, (2009). Oxygen and hydrogen isotope evidence for a temperate climate 3.42 billion years ago, vol. 462, iss. 7270, pp. 205-8, Nature, 1476-4687
Research Type: Journal Article
Michael Hren
, (2009). δ18O and δD of streamwaters across the Himalaya and Tibetan Plateau: Implications for moisture sources and paleoelevation reconstructions, Earth and Planetary Science Letters
Research Type: Journal Article
Michael Hren
, (2009). Stable isotope food-web analysis and mercury biomagnification in polar bears (Ursus maritimus), Polar Research
Research Type: Journal Article
Compound-specific stable isotope reconstruction of the paleoelevation of the Western US
, (2009). Compound-specific stable isotope reconstruction of the paleoelevation of the Western US, Geochimica et Cosmochimica Acta Supplement, vol. 73, A554
Research Type: Journal Article
\delta18O and \deltaD of streamwaters across the Himalaya and Tibetan Plateau: Implications for moisture sources and paleoelevation reconstructions
Michael Hren,
, (2009). \delta18O and \deltaD of streamwaters across the Himalaya and Tibetan Plateau: Implications for moisture sources and paleoelevation reconstructions, Earth and Planetary Science Letters, vol. 288, iss. 2-Jan, pp. 20--32, Elsevier
Research Type: Journal Article
CLIMATIC, TOPOGRAPHIC AND ECOSYSTEM CONSTRAINTS IN THE NORTH AMERICAN CORDILLERA DURING THE MIDDLE EOCENE (\~ 40 MA)
Michael Hren,
, (2010). CLIMATIC, TOPOGRAPHIC AND ECOSYSTEM CONSTRAINTS IN THE NORTH AMERICAN CORDILLERA DURING THE MIDDLE EOCENE (\~ 40 MA)
Research Type: Conference Proceedings
ORGANIC MOLECULAR PROXIES FOR PALEOCLIMATE AND PALEOELEVATION: APPLICATIONS, ADVANCES AND LIMITATIONS OF ORGANIC BIOMARKERS AS A RECORD OF PALEOENVIRONMENTAL CHANGE
Michael Hren
, (2010). ORGANIC MOLECULAR PROXIES FOR PALEOCLIMATE AND PALEOELEVATION: APPLICATIONS, ADVANCES AND LIMITATIONS OF ORGANIC BIOMARKERS AS A RECORD OF PALEOENVIRONMENTAL CHANGE
Research Type: Conference Proceedings
Cenozoic climate, topography and ecologic change in the Sierra Nevada and Basin and Range: Coupled organic molecular and inorganic isotopic records of environmental change
, (2010). Cenozoic climate, topography and ecologic change in the Sierra Nevada and Basin and Range: Coupled organic molecular and inorganic isotopic records of environmental change, vol. 2010, iss. 2010, PP24B-04
Research Type: Conference Proceedings
Pedogenic carbonate carbon isotopic constraints on paleoprecipitation: Evolution of desert in the Pacific Northwest, USA, in response to topographic development of the Cascade Range
Michael Hren,
, (2010). Pedogenic carbonate carbon isotopic constraints on paleoprecipitation: Evolution of desert in the Pacific Northwest, USA, in response to topographic development of the Cascade Range, Chemical Geology, vol. 277, iss. 4-Mar, pp. 323--335, Elsevier
Research Type: Journal Article
Biomarker reconstruction of the early Eocene paleotopography and paleoclimate of the northern Sierra Nevada
Michael Hren,
, (2010). Biomarker reconstruction of the early Eocene paleotopography and paleoclimate of the northern Sierra Nevada, Geology, vol. 38, iss. 1, pp. 7--10, Geological Society of America
Research Type: Journal Article
Constraints on the pre-extensional paleoelevation of the central Basin and Range from carbonate clumped-isotope paleothermometry
Michael Hren
, (2011). Constraints on the pre-extensional paleoelevation of the central Basin and Range from carbonate clumped-isotope paleothermometry, vol. 2011, iss. 2011, T13F--2455
Research Type: Conference Proceedings
Spatial patterns in surface waters along the SE Margin of the Tibetan Plateau, Yunnan Province, China
Michael Hren
, (2011). Spatial patterns in surface waters along the SE Margin of the Tibetan Plateau, Yunnan Province, China, vol. 2011, iss. 2011, T13F-2442
Research Type: Conference Proceedings
Paleoclimate Cooling in Eocene-Oligocene New Zealand Revealed by Clumped Isotope Thermometry
Michael Hren
, (2011). Paleoclimate Cooling in Eocene-Oligocene New Zealand Revealed by Clumped Isotope Thermometry, vol. 2011, iss. 2011, PP23C-02
Research Type: Conference Proceedings
Temporal variations in lake water temperature: Paleoenvironmental implications of lake carbonate \ensuremath\delta^18O and temperature records
Michael Hren
, (2011). Temporal variations in lake water temperature: Paleoenvironmental implications of lake carbonate \ensuremath\delta^18O and temperature records, vol. 2011, iss. 2011, T13F-2462
Research Type: Conference Proceedings
, (2011). Variation in n-alkane δD values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction, Organic Geochemistry, vol. 42, iss. Issue 3, 10.1016/j.orggeochem.2011.01.006
Research Type: Journal Article
Variation in n-alkane \deltaD values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction
Michael Hren
, (2011). Variation in n-alkane \deltaD values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction, Organic Geochemistry, vol. 42, iss. 3, pp. 283--288, Pergamon
Research Type: Journal Article
PLANT LEAF WAXES: MOLECULAR AND ISOTOPIC INDICATORS OF PALEOENVIRONMENTS
Michael Hren
, (2012). PLANT LEAF WAXES: MOLECULAR AND ISOTOPIC INDICATORS OF PALEOENVIRONMENTS, vol. 44, iss. 44, pp. 55
Research Type: Conference Proceedings
Variable magnitude of carbon isotope excursions in organic and inorganic terrestrial carbon pools during the Paleocene/Eocene Thermal Maximum
, (2012). Variable magnitude of carbon isotope excursions in organic and inorganic terrestrial carbon pools during the Paleocene/Eocene Thermal Maximum, vol. 2012, iss. 2012, PP34A--07
Research Type: Conference Proceedings
Distribution of Glycerol Dialkyl Glycerol Tetraethers in Soils from Two Environmental Transects in the U.S
Michael Hren
, (2012). Distribution of Glycerol Dialkyl Glycerol Tetraethers in Soils from Two Environmental Transects in the U.S, vol. 2012, iss. 2012, PP43B-2042
Research Type: Conference Proceedings
Early Cenozoic uplift of the SE margin of Tibet: implications for the lower crustal flow hypothesis
Michael Hren
, (2012). Early Cenozoic uplift of the SE margin of Tibet: implications for the lower crustal flow hypothesis, vol. 2012, iss. 2012, T54B-03
Research Type: Conference Proceedings
The impact of pCO_2 and climate on D/H and ^13C/^12C fractionation of higher-plant biomarkers: Implications for paleoclimate and paleoelevation reconstruction during global warm periods
, (2012). The impact of pCO_2 and climate on D/H and ^13C/^12C fractionation of higher-plant biomarkers: Implications for paleoclimate and paleoelevation reconstruction during global warm periods, vol. 2012, iss. 2012, PP11C-2038
Research Type: Conference Proceedings
DOES HYDRO-FRACKING AFFECT LOCAL SURFACE WATERS? A TEST FOR CHEMICAL SIGNATURES
Michael Hren,
, (2012). DOES HYDRO-FRACKING AFFECT LOCAL SURFACE WATERS? A TEST FOR CHEMICAL SIGNATURES, vol. 44, iss. 44, pp. 236
Research Type: Conference Proceedings
Temporal variations in lake water temperature: Paleoenvironmental implications of lake carbonate \delta18O and temperature records
Michael Hren
, (2012). Temporal variations in lake water temperature: Paleoenvironmental implications of lake carbonate \delta18O and temperature records, Earth and Planetary Science Letters, vol. 337, pp. 77--84, Elsevier
Research Type: Journal Article
Overexpressing the ZmDof1 gene in Populus does not improve growth and nitrogen assimilation under low-nitrogen conditions. Plant Cell & Tissue Culture
Michael Hren
, (2012). Overexpressing the ZmDof1 gene in Populus does not improve growth and nitrogen assimilation under low-nitrogen conditions. Plant Cell & Tissue Culture, vol. 113, pp. 51-61, Plant Cell, Tissue and Organ Culture
Research Type: Journal Article
The Cenozoic climatic and topographic evolution of the western North American Cordillera
, (2012). The Cenozoic climatic and topographic evolution of the western North American Cordillera, American Journal of Science, vol. 312, iss. 2, pp. 213-262
Research Type: Journal Article
Michael Hren
, (2012). The cenozoic climatic and topographic evolution of the western north American Cordillera, American Journal of Science
Research Type: Journal Article
Clumped Isotope Paleothermometry: Interpreting Lacustrine Climate Records
Michael Hren
, (2012). Clumped Isotope Paleothermometry: Interpreting Lacustrine Climate Records, VM Goldschmidt Conference
Research Type: Poster/Presentation
The impact of pCO2 and climate on D/H and 13C/12C fractionation of higher plant biomarkers: Implications for paleoclimate and paleoelevation reconstruction during global warm periods
Michael Hren
, (2012). The impact of pCO2 and climate on D/H and 13C/12C fractionation of higher plant biomarkers: Implications for paleoclimate and paleoelevation reconstruction during global warm periods, American Geophysical Union Fall Meeting
Research Type: Poster/Presentation
Molecular and isotopic indicators of paleoenvironmental change in the Western U.S.
Michael Hren
, (2012). Molecular and isotopic indicators of paleoenvironmental change in the Western U.S., GSA Annual Fall Meeting
Research Type: Poster/Presentation
Does hydro-fracking affect local surface waters? A test for chemical signatures
Michael Hren,
, (2012). Does hydro-fracking affect local surface waters? A test for chemical signatures, Geological Society of America
Research Type: Poster/Presentation
Extensive life on land ~1.1. Ga. ago.
Michael Hren,
, (2012). Extensive life on land ~1.1. Ga. ago., V.M. Goldschmidt Conference
Research Type: Poster/Presentation
Distribution of Glycerol Dialkyl Glycerol Tetraethers in Soils from Two Environmental Transects in the U.S.
Michael Hren
, (2012). Distribution of Glycerol Dialkyl Glycerol Tetraethers in Soils from Two Environmental Transects in the U.S., American Geophysical Union Fall Meeting
Research Type: Poster/Presentation
Proxy records of past climate, hydrology and elevation and predictions for future change.
Michael Hren
, (2012). Proxy records of past climate, hydrology and elevation and predictions for future change., UConn Environmental Engineering Seminar
Research Type: Poster/Presentation
ORGANIC MOLECULAR RECORDS OF PALEOELEVATION: APPLICATIONS, UNCERTAINTIES AND PITFALLS
Michael Hren
, (2013). ORGANIC MOLECULAR RECORDS OF PALEOELEVATION: APPLICATIONS, UNCERTAINTIES AND PITFALLS
Research Type: Conference Proceedings
Organic molecular records of topography and climate: Modern biomarker isotope and soil tetraether calibrations and applications to the paleoenvironmental history of the SE margin of Tibet
, (2013). Organic molecular records of topography and climate: Modern biomarker isotope and soil tetraether calibrations and applications to the paleoenvironmental history of the SE margin of Tibet, vol. 2013, iss. 2013, T43H-04
Research Type: Conference Proceedings
Terrestrial cooling in Northern Europe during the Eocene-Oligocene transition
Michael Hren,
, (2013). Terrestrial cooling in Northern Europe during the Eocene-Oligocene transition, Proceedings of the National Academy of Science, vol. 110, iss. 19, pp. 7562-7567
Research Type: Journal Article
Distribution of glycerol dialkyl glycerol tetraethers in soils from two environ_ mental transects in the USA
Michael Hren
, (2013). Distribution of glycerol dialkyl glycerol tetraethers in soils from two environ_ mental transects in the USA, vol. 59, pp. 49-60, Organic Geochemistry
Research Type: Journal Article
Overexpressing the ZmDof1 gene in Populus does not improve growth and nitrogen assimilation under low-nitrogen conditions
Michael Hren,
, (2013). Overexpressing the ZmDof1 gene in Populus does not improve growth and nitrogen assimilation under low-nitrogen conditions, Plant Cell, Tissue and Organ Culture (PCTOC), vol. 113, iss. 1, pp. 51--61, Springer
Research Type: Journal Article
Terrestrial cooling in Northern Europe during the eocene-oligocene transition
, (2013). Terrestrial cooling in Northern Europe during the eocene-oligocene transition, vol. 110, iss. 19, pp. 7562-7, Proceedings of the National Academy of Sciences of the United States of America, 1091-6490
Research Type: Journal Article
Paleoelevation estimates for the northern and central proto-Basin and Range from carbonate clumped isotope thermometry
Michael Hren
, (2013). Paleoelevation estimates for the northern and central proto-Basin and Range from carbonate clumped isotope thermometry, DOI: 10.1002/tect.20016, Tectonics
Research Type: Journal Article
Distribution of glycerol dialkyl glycerol tetraethers in soils from two environmental transects in the USA
Michael Hren,
, (2013). Distribution of glycerol dialkyl glycerol tetraethers in soils from two environmental transects in the USA, Organic Geochemistry, vol. 59, pp. 49--60, Pergamon
Research Type: Journal Article
Organic molecular records of topography and climate: Modern biomarker isotope and soil tetraether calibrations and applications to the paleoenvironmental history of the SE margin of Tibet.
Michael Hren
, (2013). Organic molecular records of topography and climate: Modern biomarker isotope and soil tetraether calibrations and applications to the paleoenvironmental history of the SE margin of Tibet., American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Molecular and isotopic indicators of Cenozoic paleoenvironmental change in the Western U.S.
Michael Hren
, (2013). Molecular and isotopic indicators of Cenozoic paleoenvironmental change in the Western U.S., Wesleyan U. Spring Seminars
Research Type: Poster/Presentation
Organic molecular record of paleoelevations: Applications, uncertainties, and pitfalls
Michael Hren
, (2013). Organic molecular record of paleoelevations: Applications, uncertainties, and pitfalls, Pardee Keynote Symposium at Geological Society of America Annual Fall Meeting
Research Type: Poster/Presentation
Measuring Topographic Growth through Time I Posters
Michael Hren,
, (2014). Measuring Topographic Growth through Time I Posters
Research Type: Conference Proceedings
Resolving the influences of climatology and topography on water isotopes
Michael Hren
, (2014). Resolving the influences of climatology and topography on water isotopes
Research Type: Conference Proceedings
ORGANIC MOLECULAR BIOMARKER RECORDS OF PALEOENVIRONMENTAL CHANGE: PITFALLS, UNCERTAINTY AND APPLICATION TO THE SE TIBETAN PLATEAU MARGIN
Michael Hren
, (2014). ORGANIC MOLECULAR BIOMARKER RECORDS OF PALEOENVIRONMENTAL CHANGE: PITFALLS, UNCERTAINTY AND APPLICATION TO THE SE TIBETAN PLATEAU MARGIN
Research Type: Conference Proceedings
The Cenozoic elevation history of the southeast margin of the Tibetan Plateau
, (2014). The Cenozoic elevation history of the southeast margin of the Tibetan Plateau, vol. 2014, iss. 2014, EP24B-02
Research Type: Conference Proceedings
Compound-specific stable isotope records of precipitation isotopes and paleotopographic evolution: Patterns of Cenozoic change in the Western US
Michael Hren
, (2014). Compound-specific stable isotope records of precipitation isotopes and paleotopographic evolution: Patterns of Cenozoic change in the Western US, vol. 2014, iss. 2014, T21C--4620
Research Type: Conference Proceedings
Thermo-chemical heterogeneity of continental lithospheric mantle: examples from Europe, Siberia, and North America
Michael Hren
, (2014). Thermo-chemical heterogeneity of continental lithospheric mantle: examples from Europe, Siberia, and North America, vol. 2014, iss. 2014, T24A-07
Research Type: Conference Proceedings
A biomarker isotope record of hydrologic change in NE Spain from the late Eocene to early Oligocene
, (2014). A biomarker isotope record of hydrologic change in NE Spain from the late Eocene to early Oligocene, vol. 2014, iss. 2014, PP41A-1351
Research Type: Conference Proceedings
An expanded \delta 13 C org record through the Lower Kellwasser Event (Late Devonian) in the “Catskill Delta” of New York
, (2014). An expanded \delta 13 C org record through the Lower Kellwasser Event (Late Devonian) in the “Catskill Delta” of New York, vol. 46, iss. 46, pp. 131
Research Type: Conference Proceedings
Compound-specific stable isotope records of precipitation isotopes and paleotopographic evolution: Patterns of Cenozoic change in the Western U.S.
Michael Hren
, (2014). Compound-specific stable isotope records of precipitation isotopes and paleotopographic evolution: Patterns of Cenozoic change in the Western U.S., vol. 2014, iss. 2014, T21C-4620
Research Type: Conference Proceedings
Compositional and Temperature Effects of Phosphoric Acid Fractionation on \ensuremath\Delta_47 Analysis and Implications for Discrepant Calibrations
Michael Hren
, (2014). Compositional and Temperature Effects of Phosphoric Acid Fractionation on \ensuremath\Delta_47 Analysis and Implications for Discrepant Calibrations, vol. 2014, iss. 2014, PP51A-1112
Research Type: Conference Proceedings
Comparison of Paleotemperature Proxies from the Goler Formation, California
, (2014). Comparison of Paleotemperature Proxies from the Goler Formation, California, vol. 2014, iss. 2014, T24A-02
Research Type: Conference Proceedings
Stable isotopes reveal high southeast Tibetan Plateau margin since the Paleogene
Michael Hren,
, (2014). Stable isotopes reveal high southeast Tibetan Plateau margin since the Paleogene, vol. 394, pp. 270-278, Earth & Planetary Science Letters
Research Type: Journal Article
Organic molecular biomarker records of paleoenvironmental change: Pitfalls, uncertainty and application to the SE Tibetan Plateau Margin
Michael Hren
, (2014). Organic molecular biomarker records of paleoenvironmental change: Pitfalls, uncertainty and application to the SE Tibetan Plateau Margin, Northeast GSA Annual Meeting
Research Type: Poster/Presentation
Organic molecular records of Cenozoic climate and topographic change
Michael Hren
, (2014). Organic molecular records of Cenozoic climate and topographic change, Invited Speaker University of West Virginia
Research Type: Poster/Presentation
Compositional and Temperature Effects of Phosphoric Acid Fractionation on Δ47 Analysis and Implications for Discrepant Calibrations
Michael Hren,
, (2014). Compositional and Temperature Effects of Phosphoric Acid Fractionation on Δ47 Analysis and Implications for Discrepant Calibrations, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
RESOLVING VEGETATION-CO2-CLIMATE FEEDBACKS DURING THE LAST ICEHOUSE ― AN ELT COLLABORATIVE APPROACH
Michael Hren,
, (2014). RESOLVING VEGETATION-CO2-CLIMATE FEEDBACKS DURING THE LAST ICEHOUSE ― AN ELT COLLABORATIVE APPROACH, Geological Society of America Annual Fall Meeting
Research Type: Poster/Presentation
AN EXPANDED δ13CORG RECORD THROUGH THE LOWER KELLWASSER EVENT (LATE DEVONIAN) IN THE “CATSKILL DELTA” OF NEW YORK
Michael Hren,
, (2014). AN EXPANDED δ13CORG RECORD THROUGH THE LOWER KELLWASSER EVENT (LATE DEVONIAN) IN THE “CATSKILL DELTA” OF NEW YORK, Geological Society of American Annual Fall Meeting
Research Type: Poster/Presentation
Organic Molecular Records of the Paleoelevation History of the SE Tibetan Plateau
Michael Hren
, (2014). Organic Molecular Records of the Paleoelevation History of the SE Tibetan Plateau, Wesleyan Spring Seminar Series
Research Type: Poster/Presentation
Measuring Topographic Growth Through Time
Michael Hren,
, (2014). Measuring Topographic Growth Through Time, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Environmental Controls of Hydrogen Isotope Fractionation in Plant Biomarkers
Michael Hren
, (2014). Environmental Controls of Hydrogen Isotope Fractionation in Plant Biomarkers, Earth Life Transitions Meeting
Research Type: Poster/Presentation
An expanded δ13Corg record through the Lower Kellwasser Event (Late Devonian) in the “Catskill Delta” of New York
Michael Hren
, (2014). An expanded δ13Corg record through the Lower Kellwasser Event (Late Devonian) in the “Catskill Delta” of New York, Geological Society of America Annual Meeting, North America
Research Type: Poster/Presentation
Plant wax isotope records of spatial and temporal change to climate and hydrology in western North America during the Miocene and Middle Miocene Climatic Optimum
Michael Hren
, (2015). Plant wax isotope records of spatial and temporal change to climate and hydrology in western North America during the Miocene and Middle Miocene Climatic Optimum, vol. 2015, iss. 2015, PP11C--05
Research Type: Conference Proceedings
Variations in hydrogen isotopes of individual plant waxes from four plant species during the growing season
Michael Hren
, (2015). Variations in hydrogen isotopes of individual plant waxes from four plant species during the growing season, vol. 249, iss. 249
Research Type: Conference Proceedings
Variations of soil n-alkanes delta D and glycerol dialkyl glycerol tetraethers (GDGTs) distributions along an altitudinal transect from southwest China
Michael Hren,
, (2015). Variations of soil n-alkanes delta D and glycerol dialkyl glycerol tetraethers (GDGTs) distributions along an altitudinal transect from southwest China, vol. 250, iss. 250
Research Type: Conference Proceedings
Biomarker isotope and soil tetraether records of the paleotopographic and paleoenvironmental history of the SE margin of Tibet
, (2015). Biomarker isotope and soil tetraether records of the paleotopographic and paleoenvironmental history of the SE margin of Tibet, vol. 2015, iss. 2015, T12B-07
Research Type: Conference Proceedings
Bringing organic carbon isotopes and phytoliths to the table as additional constraints on paleoelevation
Michael Hren
, (2015). Bringing organic carbon isotopes and phytoliths to the table as additional constraints on paleoelevation, vol. 2015, iss. 2015, T21B--2814
Research Type: Conference Proceedings
A terrestrial record of water isotopes reveals the Eocene-Oligoene transition in southern Argentina
Michael Hren,
, (2015). A terrestrial record of water isotopes reveals the Eocene-Oligoene transition in southern Argentina, vol. 2015, iss. 2015, PP11B-2247
Research Type: Conference Proceedings
Compositional and temperature effects of phosphoric acid fractionation on δ47 analysis and implications for discrepant calibrations
Michael Hren,
, (2015). Compositional and temperature effects of phosphoric acid fractionation on δ47 analysis and implications for discrepant calibrations, Chemical Geology, vol. 396, pp. 51-60
Research Type: Journal Article
Compositional and temperature effects of phosphoric acid fractionation on \Delta47 analysis and implications for discrepant calibrations
Michael Hren
, (2015). Compositional and temperature effects of phosphoric acid fractionation on \Delta47 analysis and implications for discrepant calibrations, Chemical Geology, vol. 396, pp. 51--60, Elsevier
Research Type: Journal Article
Positive feedback drives carbon release from soils to atmosphere during Paleocene/Eocene warming
Michael Hren
, (2015). Positive feedback drives carbon release from soils to atmosphere during Paleocene/Eocene warming, American Journal of Science, vol. 315, iss. 4, pp. 337-361
Research Type: Journal Article
Rapid change in western North American high-elevation rainfall patterns during the Middle Eocene Climatic Optimum (MECO)
Michael Hren,
, (2015). Rapid change in western North American high-elevation rainfall patterns during the Middle Eocene Climatic Optimum (MECO), vol. 315, iss. doi: 10.2475/04.2015.03, pp. 317-336, American Journal of Science
Research Type: Journal Article
Michael Hren
, (2015). Rapid change in high-elevation precipitation patterns of Western North America during the Middle Eocene Climatic Optimum (MECO), American Journal of Science
Research Type: Journal Article
Compositional and temperature effects of phosphoric acid fractionation on _47 analysis and implications for discrepant calibrations.
Michael Hren
, (2015). Compositional and temperature effects of phosphoric acid fractionation on _47 analysis and implications for discrepant calibrations., vol. 396, pp. 51-60, Chemical Geology
Research Type: Journal Article
Reconstructing Extinct Plant Water Use for Understanding Vegetation-Climate Feedbacks: Methods, Synthesis, and a Case Study Using the Paleozoic Era Medullosan “Seed Ferns”
Michael Hren,
, (2015). Reconstructing Extinct Plant Water Use for Understanding Vegetation-Climate Feedbacks: Methods, Synthesis, and a Case Study Using the Paleozoic Era Medullosan “Seed Ferns”, vol. 21, pp. 167-195, Paleontological Society
Research Type: Journal Article
A PALEOELEVATION HISTORY OF THE PATAGONIAN ANDES FROM HYDRATED VOLCANIC GLASS
Michael Hren,
, (2015). A PALEOELEVATION HISTORY OF THE PATAGONIAN ANDES FROM HYDRATED VOLCANIC GLASS, Geological Society America Annual Fall Meeting
Research Type: Poster/Presentation
Comparing stable isotope compositions of hair in a mother-calf pair of elephants (Loxodonta africana) during nursing and weaning
Michael Hren,
, (2015). Comparing stable isotope compositions of hair in a mother-calf pair of elephants (Loxodonta africana) during nursing and weaning, Society Vertebrate Paleontology Annual Meeting
Research Type: Poster/Presentation
Reconstructing extinct plant water use for understanding vegetation-climate feedbacks: methos, synthesis and a case study using the Paleozoic era.
Michael Hren,
, (2015). Reconstructing extinct plant water use for understanding vegetation-climate feedbacks: methos, synthesis and a case study using the Paleozoic era., Paleontological Society Short Course
Research Type: Poster/Presentation
CENOZOIC ORGANIC MOLECULAR ISOSCAPES: PLANT WAX HYDROGEN ISOTOPE RECORDS OF CHANGING PRECIPITATION ISOTOPES AND CLIMATE ACROSS NORTH AMERICA
Michael Hren
, (2015). CENOZOIC ORGANIC MOLECULAR ISOSCAPES: PLANT WAX HYDROGEN ISOTOPE RECORDS OF CHANGING PRECIPITATION ISOTOPES AND CLIMATE ACROSS NORTH AMERICA, GSA Annual Fall Meeting
Research Type: Poster/Presentation
TEMPORAL VARIATIONS IN HYDROGEN AND CARBON ISOTOPES: UNDERSTANDING HOW PHYSIOLOGICAL DIFFERENCES BETWEEN TAXONOMIC CLASSES AFFECT ISOTOPIC FRACTIONATION IN PLANT LEAF WAXES
Michael Hren,
, (2015). TEMPORAL VARIATIONS IN HYDROGEN AND CARBON ISOTOPES: UNDERSTANDING HOW PHYSIOLOGICAL DIFFERENCES BETWEEN TAXONOMIC CLASSES AFFECT ISOTOPIC FRACTIONATION IN PLANT LEAF WAXES, Geological Society America Annual Fall meeting
Research Type: Poster/Presentation
Compound-specific stable isotopes of plant waxes: Records of environmental variability
Michael Hren
, (2015). Compound-specific stable isotopes of plant waxes: Records of environmental variability, Earth Life Transitions Working Group, Ireland
Research Type: Poster/Presentation
Late Pleistocene paleoclimate reconstruction at Lusakert Cave, Armenia. Paper presented at the Annual Meeting of the Geological Society of America, Baltimore, Maryland.
Michael Hren,
Gideon Hartman,
, (2015). Late Pleistocene paleoclimate reconstruction at Lusakert Cave, Armenia. Paper presented at the Annual Meeting of the Geological Society of America, Baltimore, Maryland., Annual Meeting of the Geological Society of America, World Wide
Research Type: Poster/Presentation
δ13Corg records in Late Devonian strata of the Appalachian Basin
Michael Hren
, (2015). δ13Corg records in Late Devonian strata of the Appalachian Basin, Geological Society of America Southeastern Section
Research Type: Poster/Presentation
Compound-specific stable isotopes of higher plant waxes: Organic molecular tracers of climate, ecosystems and hydrology over human to geologic timescales
Michael Hren
, (2015). Compound-specific stable isotopes of higher plant waxes: Organic molecular tracers of climate, ecosystems and hydrology over human to geologic timescales, Colby College Department of Chemistry
Research Type: Poster/Presentation
HYDROLOGICAL CHANGES DURING THE MIDDLE MIOCENE CLIMATIC OPTIMUM IN SOUTHWEST MONTANA USING MOLECULAR BIOMARKERS OF LEAF WAXES
Michael Hren
, (2015). HYDROLOGICAL CHANGES DURING THE MIDDLE MIOCENE CLIMATIC OPTIMUM IN SOUTHWEST MONTANA USING MOLECULAR BIOMARKERS OF LEAF WAXES, Northeast Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Facies analysis and δ13Corg records across the Lower Kellwasser equivalent (Upper Devonian) in New York and Pennsylvania
Michael Hren
, (2015). Facies analysis and δ13Corg records across the Lower Kellwasser equivalent (Upper Devonian) in New York and Pennsylvania, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
DYNAMIC SHIFTS IN GLACIAL-INTERGLACIAL ATMOSPHERIC CO2 AND TROPICAL VEGETATION DURING EARTH’S LAST ICEHOUSE
Michael Hren,
, (2015). DYNAMIC SHIFTS IN GLACIAL-INTERGLACIAL ATMOSPHERIC CO2 AND TROPICAL VEGETATION DURING EARTH’S LAST ICEHOUSE, Geological Society America Annual Fall Meeting
Research Type: Poster/Presentation
Investigating the Use of Polycyclic Aromatic Hydrocarbons (PAHs) as a Proxy for Holocene Forest Fires on the Colorado Front Range
Michael Hren
, (2015). Investigating the Use of Polycyclic Aromatic Hydrocarbons (PAHs) as a Proxy for Holocene Forest Fires on the Colorado Front Range, Annual Meeting: Geological Society of America
Research Type: Poster/Presentation
Timing of the Lower Kellwasser Extinction (Late Devonian) relative to dark shale deposition in the Appalachian Basin
Michael Hren,
, (2015). Timing of the Lower Kellwasser Extinction (Late Devonian) relative to dark shale deposition in the Appalachian Basin, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Using geochemical signals to decipher paleoelevation
Michael Hren
, (2015). Using geochemical signals to decipher paleoelevation, FACET (Feedbacks among climate, erosion and tectonics) workshop, Asia
Research Type: Poster/Presentation
Plant wax isotope records of spatial and temporal change to climate and hydrology in western North America during the Miocene and Middle Miocene Climatic Optimum.
Michael Hren,
, (2015). Plant wax isotope records of spatial and temporal change to climate and hydrology in western North America during the Miocene and Middle Miocene Climatic Optimum., American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
STABLE ISOTOPIC AND MOLECULAR ALTERATION OF ORGANIC BIOMARKERS IN SOIL DURING SIMULATED DIAGENESIS: IMPACT OF VARYING MOISTURE, TEMPERATURE, ATMOSPHERE OXYGEN AND LIGHT
Michael Hren
, (2015). STABLE ISOTOPIC AND MOLECULAR ALTERATION OF ORGANIC BIOMARKERS IN SOIL DURING SIMULATED DIAGENESIS: IMPACT OF VARYING MOISTURE, TEMPERATURE, ATMOSPHERE OXYGEN AND LIGHT, Geological Society America Annual Fall Meeting
Research Type: Poster/Presentation
UNDERSTANDING THE RELATIONSHIP BETWEEN ENVIRONMENTAL FACTORS AND THE DEUTERIUM/HYDROGEN RATIOS FOUND IN N-ALKANES BETWEEN VARYING PLANT SPECIES
Michael Hren
, (2015). UNDERSTANDING THE RELATIONSHIP BETWEEN ENVIRONMENTAL FACTORS AND THE DEUTERIUM/HYDROGEN RATIOS FOUND IN N-ALKANES BETWEEN VARYING PLANT SPECIES, Geological Society America Annual Fall Meeting
Research Type: Poster/Presentation
Keck Connecticut Project: Holocene Environmental Change and Human Impacts in southern New England
Michael Hren
, (2016). Keck Connecticut Project: Holocene Environmental Change and Human Impacts in southern New England, Proceedings of the Twenty-Ninth Annual Keck Research Symposium in Geology, http://keckgeology.org/symposiumvolumes
Research Type: Conference Proceedings
Microbial alteration of normal alkane \ensuremath\delta^13C and \ensuremath\deltaD in sedimentary archives
Gideon Hartman,
, (2016). Microbial alteration of normal alkane \ensuremath\delta^13C and \ensuremath\deltaD in sedimentary archives, vol. 2016, iss. 2016, PP11B-2020
Research Type: Conference Proceedings
Abrupt Terrestrial Cooling at the Eocene-Oligocene Transition in the Southern Hemisphere
, (2016). Abrupt Terrestrial Cooling at the Eocene-Oligocene Transition in the Southern Hemisphere, vol. 2016, iss. 2016, PP22A-02
Research Type: Conference Proceedings
Microbial alteration of normal alkane \delta 13 C and \deltaD in sedimentary archives
Michael Hren,
Gideon Hartman
, (2016). Microbial alteration of normal alkane \delta 13 C and \deltaD in sedimentary archives, vol. 2016, iss. 2016, PP11B--2020
Research Type: Conference Proceedings
Neotectonics, Seismology, and Surface Processes in South and East Asia VI Posters
Michael Hren,
, (2016). Neotectonics, Seismology, and Surface Processes in South and East Asia VI Posters
Research Type: Conference Proceedings
Multi-proxy reconstructions of hydrologic change during the Eocene-Oligocene transition in the North American Interior
, (2016). Multi-proxy reconstructions of hydrologic change during the Eocene-Oligocene transition in the North American Interior, vol. 2016, iss. 2016, PP33B-2359
Research Type: Conference Proceedings
Hydrogen isotope alteration of normal alkanes during artificial maturation experiments
, (2016). Hydrogen isotope alteration of normal alkanes during artificial maturation experiments, vol. 2016, iss. 2016, PP11B-2022
Research Type: Conference Proceedings
Polar Ice Sheets Drive Paleohydroclimate Affecting Terrestrial Plant Distribution and CO_2 Exchange Potential during the Upper Carboniferous
Michael Hren
, (2016). Polar Ice Sheets Drive Paleohydroclimate Affecting Terrestrial Plant Distribution and CO_2 Exchange Potential during the Upper Carboniferous, vol. 2016, iss. 2016, PP41F-08
Research Type: Conference Proceedings
Coupling of marine and continental oxygen isotope records during the Eocene-Oligocene transition
Michael Hren,
, (2016). Coupling of marine and continental oxygen isotope records during the Eocene-Oligocene transition, Geological Society of America Bulletin, vol. 128, iss. 4-Mar, pp. 502-510
Research Type: Journal Article
Michael Hren
, (2016). Temporal variations in the δD of leaf n-alkanes from four riparian plant species, Organic Geochemistry
Research Type: Journal Article
Temporal variations in the \deltaD of leaf n-alkanes from four riparian plant species
Michael Hren
, (2016). Temporal variations in the \deltaD of leaf n-alkanes from four riparian plant species, Organic Geochemistry, vol. 97, pp. 122--130, Pergamon
Research Type: Journal Article
Climate, p CO 2 and terrestrial carbon cycle linkages during late Palaeozoic glacial--interglacial cycles
Michael Hren,
, (2016). Climate, p CO 2 and terrestrial carbon cycle linkages during late Palaeozoic glacial--interglacial cycles, Nature Geoscience, vol. 9, iss. 11, pp. 824--828, Nature Publishing Group
Research Type: Journal Article
THE GEOSYNCLINAL THEORY
Michael Hren,
, (2016). THE GEOSYNCLINAL THEORY, Geological Society of America Bulletin, vol. 128, pp. 5--6, Geological Soc America
Research Type: Journal Article
Linked Shifts in Glacial-Interglacial CO2, Climate and Terrestrial Carbon Cycling During Earth’s Last Icehouse
Michael Hren,
, (2016). Linked Shifts in Glacial-Interglacial CO2, Climate and Terrestrial Carbon Cycling During Earth’s Last Icehouse, Nature Geoscience
Research Type: Journal Article
Michael Hren
, (2016). Climate, pCO2 and terrestrial carbon cycle linkages during late Palaeozoic glacial-interglacial cycles, Nature Geoscience, vol. 9, iss. 11, pp. 824-828, 10.1038/ngeo2822
Research Type: Journal Article
HOLOCENE ENVIRONMENTAL CHANGE AND HUMAN IMPACTS IN SOUTHERN NEW ENGLAND
Michael Hren,
, (2016). HOLOCENE ENVIRONMENTAL CHANGE AND HUMAN IMPACTS IN SOUTHERN NEW ENGLAND
Research Type: Journal Article
Temporal variations in the δD of leaf n-alkanes from four riparian plant species.
Michael Hren,
, (2016). Temporal variations in the δD of leaf n-alkanes from four riparian plant species., pp. 10.1016/j.orggeochem.2016.03.010, Organic Geochemistry
Research Type: Journal Article
Dynamic carboniferous tropical forests: a new view of their paleo-plant function and paleo-ecophysiology
Michael Hren,
, (2016). Dynamic carboniferous tropical forests: a new view of their paleo-plant function and paleo-ecophysiology, New Phytologist Annual Meeting
Research Type: Poster/Presentation
Global Climate Change and Terrestrial Hydrology During the Middle Eocene
Michael Hren
, (2016). Global Climate Change and Terrestrial Hydrology During the Middle Eocene, Organic Geochemistry Gordon Conference
Research Type: Poster/Presentation
The Climate Context of Early Modern Human Expansion into the Armenian Highlands
Michael Hren,
, (2016). The Climate Context of Early Modern Human Expansion into the Armenian Highlands, Organic Geochemistry Gordon Conference
Research Type: Poster/Presentation
Structure and function in dynamic carboniferous tropical forests: A new perspective on Paleozoic plant function and physiological forcing of climate
Michael Hren,
, (2016). Structure and function in dynamic carboniferous tropical forests: A new perspective on Paleozoic plant function and physiological forcing of climate, Geological Society America Annual Fall Meeting
Research Type: Poster/Presentation
Climate, vegetation and stable isotopes of modern and sedimentary n-alkanes in semi-arid and grassland environments of the North American interior
Michael Hren
, (2016). Climate, vegetation and stable isotopes of modern and sedimentary n-alkanes in semi-arid and grassland environments of the North American interior, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Polycyclic Aromatic Hydrocarbons Preserve Sedimentary Records of Wildfire in Diverse Ecosystems
Michael Hren,
, (2016). Polycyclic Aromatic Hydrocarbons Preserve Sedimentary Records of Wildfire in Diverse Ecosystems, 2016 Geological Society of America Annual Meeting
Research Type: Poster/Presentation
A global terrestrial climate shift at the Eocene-Oligocene transition: Evidence from Mid-latitude south America
Michael Hren
, (2016). A global terrestrial climate shift at the Eocene-Oligocene transition: Evidence from Mid-latitude south America, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Temporal variations in organic molecular hydrogen and carbon isotope signatures: Modern records and implications for paleoclimate
Michael Hren
, (2016). Temporal variations in organic molecular hydrogen and carbon isotope signatures: Modern records and implications for paleoclimate, Annual Meeting Earth Life Transitions Working Group
Research Type: Poster/Presentation
Guest Lecture UC DAVIS Geobiology and Climate Seminar
Michael Hren
, (2016). Guest Lecture UC DAVIS Geobiology and Climate Seminar, Guest Lecture UC DAVIS, CA Geobiology and Climate Seminar, North America
Research Type: Poster/Presentation
Stratigraphic revision and facies analyses of the Frasnian-Famennian boundary interval (Upper Devonian) in New York and Pennsylvania
Michael Hren
, (2016). Stratigraphic revision and facies analyses of the Frasnian-Famennian boundary interval (Upper Devonian) in New York and Pennsylvania, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Neotectonics, seismology and surface processes in South and East Asia
Michael Hren,
, (2016). Neotectonics, seismology and surface processes in South and East Asia, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
The effect of atmospheric CO2 and O2 concentration on hydrogen isotope values of epicuticular plant wax compounds
Michael Hren,
, (2016). The effect of atmospheric CO2 and O2 concentration on hydrogen isotope values of epicuticular plant wax compounds, Geological Society America Annual Meeting (Northeast Section)
Research Type: Poster/Presentation
The Affect of Land Use Change on Stable Isotope (Δ13C And Δ15N) Values in Connecticut Wetlands During the Holocene
Michael Hren,
, (2016). The Affect of Land Use Change on Stable Isotope (Δ13C And Δ15N) Values in Connecticut Wetlands During the Holocene, Geological Society of America Northeastern Section Annual Meeting
Research Type: Poster/Presentation
Abrupt terrestrial cooling at the Eocene-Oligocene transition in South America
Michael Hren
, (2016). Abrupt terrestrial cooling at the Eocene-Oligocene transition in South America, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Organic molecular records of changing topography and climate in Western North America
Michael Hren
, (2016). Organic molecular records of changing topography and climate in Western North America, UMASS Weekly Seminar Series
Research Type: Poster/Presentation
Late Devonian (Frasnian-Famennian) δ13Corg perturbations in the northern Appalachian Basin: an integrated study of extinction through geochemical and sedimentological records
Michael Hren
, (2016). Late Devonian (Frasnian-Famennian) δ13Corg perturbations in the northern Appalachian Basin: an integrated study of extinction through geochemical and sedimentological records, Geological Society of America Northeastern Section Meeting
Research Type: Poster/Presentation
An Organic Molecular Record of Post-Glacial Climate and Fire Occurrence in a Southern New England Wetland Core
Michael Hren,
, (2016). An Organic Molecular Record of Post-Glacial Climate and Fire Occurrence in a Southern New England Wetland Core, Geological Society of America Northeastern Section Annual Meeting
Research Type: Poster/Presentation
Multi-proxy reconstructions of hydrologic change during the Eocene-Oligocene transition in the North American interior
Michael Hren
, (2016). Multi-proxy reconstructions of hydrologic change during the Eocene-Oligocene transition in the North American interior, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Paleoenvironmental reconstruction of the Barstow Formation, Southern California, through the Middle Miocene Climatic
Michael Hren
, (2016). Paleoenvironmental reconstruction of the Barstow Formation, Southern California, through the Middle Miocene Climatic, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Climatic and hydrologic change during the Eocene-Oligocene transition in the North American Interior
Michael Hren
, (2016). Climatic and hydrologic change during the Eocene-Oligocene transition in the North American Interior, Geological Society America AnnualMeeting
Research Type: Poster/Presentation
Climate impact on human behavior in the Upper Paleolithic of the Armenian highlands
Michael Hren,
, (2016). Climate impact on human behavior in the Upper Paleolithic of the Armenian highlands, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Organic molecular paleohypsometry: A new approach to reconstructing the paleoelevation history of an orogen
Michael Hren
, (2017). Organic molecular paleohypsometry: A new approach to reconstructing the paleoelevation history of an orogen, vol. 2017, iss. 2017, PP12A--03
Research Type: Conference Proceedings
A biomarker stable isotope record of late Quaternary climate and organic matter export in Southwestern Taiwan
, (2017). A biomarker stable isotope record of late Quaternary climate and organic matter export in Southwestern Taiwan, vol. 2017, iss. 2017, PP21B-1266
Research Type: Conference Proceedings
The Effect of Soil Temperature Seasonality on Climate Reconstructions from Paleosols
Michael Hren
, (2017). The Effect of Soil Temperature Seasonality on Climate Reconstructions from Paleosols, vol. 2017, iss. 2017, PP51C-1092
Research Type: Conference Proceedings
LAKE FAUNAS THROUGH TIME—THE ESTUARY EFFECT AND HOW LIFE INVADED LAND
Michael Hren,
, (2017). LAKE FAUNAS THROUGH TIME—THE ESTUARY EFFECT AND HOW LIFE INVADED LAND
Research Type: Conference Proceedings
Climatic and hydrologic perturbations in eastern North America during the Middle Miocene Climatic Optimum
Michael Hren
, (2017). Climatic and hydrologic perturbations in eastern North America during the Middle Miocene Climatic Optimum, vol. 2017, iss. 2017, PP13F-09
Research Type: Conference Proceedings
A geochemical record of polycyclic aromatic hydrocarbons (PAHs) during the late Paleozoic Ice Age: The relationship between atmospheric pCO2, climate and fire.
, (2017). A geochemical record of polycyclic aromatic hydrocarbons (PAHs) during the late Paleozoic Ice Age: The relationship between atmospheric pCO2, climate and fire., vol. 2017, iss. 2017, GC43L-02
Research Type: Conference Proceedings
A Cenozoic water isotope record of the evolution of the Patagonian Andes
, (2017). A Cenozoic water isotope record of the evolution of the Patagonian Andes, vol. 2017, iss. 2017, T23D-0628
Research Type: Conference Proceedings
CARBON CYCLE PERTURBATIONS ALONG AN ONSHORE-OFFSHORE GRADIENT DURING THE KELLWASSER MASS EXTINCTION EVENTS, UPPER DEVONIAN, NORTHERN APPALACHIAN BASIN
Michael Hren,
, (2017). CARBON CYCLE PERTURBATIONS ALONG AN ONSHORE-OFFSHORE GRADIENT DURING THE KELLWASSER MASS EXTINCTION EVENTS, UPPER DEVONIAN, NORTHERN APPALACHIAN BASIN
Research Type: Conference Proceedings
NEW EVIDENCE FOR LONG-LIVED CENOZOIC TOPOGRAPHY IN THE PATAGONIAN ANDES
Michael Hren,
, (2017). NEW EVIDENCE FOR LONG-LIVED CENOZOIC TOPOGRAPHY IN THE PATAGONIAN ANDES
Research Type: Conference Proceedings
Michael Hren
, (2017). Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate, New Phytologist
Research Type: Journal Article
Michael Hren
, (2017). Soil n-alkane δD and glycerol dialkyl glycerol tetraether (GDGT) distributions along an altitudinal transect from southwest China: Evaluating organic molecular proxies for paleoclimate and paleoelevation, Organic Geochemistry
Research Type: Journal Article
CARBON ISOTOPIC FRACTIONATION BETWEEN WHOLE LEAVES AND CUTICLE
Michael Hren
, (2017). CARBON ISOTOPIC FRACTIONATION BETWEEN WHOLE LEAVES AND CUTICLE, vol. 32, pp. 199-205, Palaios, 10.2110/palo.2016.073
Research Type: Journal Article
CARBON ISOTOPIC FRACTIONATION BETWEEN WHOLE LEAVES AND CUTICLELEAF-CUTICLE ISOTOPIC FRACTIONATIOND. L. ROYER AND MT HREN
Michael Hren,
, (2017). CARBON ISOTOPIC FRACTIONATION BETWEEN WHOLE LEAVES AND CUTICLELEAF-CUTICLE ISOTOPIC FRACTIONATIOND. L. ROYER AND MT HREN, Palaios, vol. 32, iss. 4, pp. 199--205, GeoScienceWorld
Research Type: Journal Article
Stratigraphy and paleoenvironmental analysis of the Frasnian-Famennian (Upper Devonian) boundary interval in Tioga, north-central Pennsylvania
Michael Hren
, (2017). Stratigraphy and paleoenvironmental analysis of the Frasnian-Famennian (Upper Devonian) boundary interval in Tioga, north-central Pennsylvania, Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 478, pp. 67-79
Research Type: Journal Article
Hydrogen isotope and molecular alteration of n-alkanes during heating in open and closed systems
Michael Hren,
, (2017). Hydrogen isotope and molecular alteration of n-alkanes during heating in open and closed systems, Organic Geochemistry, vol. 112, pp. 47-58, Elsevier
Research Type: Journal Article
Michael Hren
, (2017). Carbon isotopic fractionation between whole leaves and cuticle, Palaios
Research Type: Journal Article
Microbial alteration of the hydrogen and carbon isotopic composition of ¬n-alkanes in sediments
Michael Hren,
Gideon Hartman
, (2017). Microbial alteration of the hydrogen and carbon isotopic composition of ¬n-alkanes in sediments, vol. 107, pp. 8-Jan, Organic Geochemistry
Research Type: Journal Article
Soil n-alkane \deltaD and glycerol dialkyl glycerol tetraether (GDGT) distributions along an altitudinal transect from southwest China: Evaluating organic molecular proxies for paleoclimate and paleoelevation
Michael Hren,
, (2017). Soil n-alkane \deltaD and glycerol dialkyl glycerol tetraether (GDGT) distributions along an altitudinal transect from southwest China: Evaluating organic molecular proxies for paleoclimate and paleoelevation, Organic Geochemistry, vol. 107, pp. 21--32, Pergamon
Research Type: Journal Article
The distribution of glycerol dialkyl glycerol tetraethers across an environmental gradient in Yunnan Province, China
Michael Hren,
, (2017). The distribution of glycerol dialkyl glycerol tetraethers across an environmental gradient in Yunnan Province, China, Organic Geochemistry
Research Type: Journal Article
Microbial alteration of the hydrogen and carbon isotopic composition of n-alkanes in sediments
Michael Hren,
Gideon Hartman,
, (2017). Microbial alteration of the hydrogen and carbon isotopic composition of n-alkanes in sediments, Organic Geochemistry, vol. 107, pp. 8-Jan
Research Type: Journal Article
Stratigraphy and paleoenvironments of the Kellwasser Events in the Upper Devonian of the Southern Tier of New York and north-central Pennsylvania
Michael Hren,
, (2017). Stratigraphy and paleoenvironments of the Kellwasser Events in the Upper Devonian of the Southern Tier of New York and north-central Pennsylvania, Northeastern Geobiology Symposium
Research Type: Poster/Presentation
Organic molecular biomarker records of Cenozoic climate and topographic change
Michael Hren
, (2017). Organic molecular biomarker records of Cenozoic climate and topographic change, Central Connecticut State weekly seminar
Research Type: Poster/Presentation
Carbon cycle perturbations along an onshore-offshore gradient during the Kellwasser mass extinction events, Upper Devonian, northern Appalachian Basin
Michael Hren
, (2017). Carbon cycle perturbations along an onshore-offshore gradient during the Kellwasser mass extinction events, Upper Devonian, northern Appalachian Basin, Geological Society of America Annual Meeting, World Wide
Research Type: Poster/Presentation
Cenozoic climatic and tectonic evolution of western North America: An organic molecular perspective on paleotopography and paleohydrology during Cenozoic warm periods
Michael Hren
, (2017). Cenozoic climatic and tectonic evolution of western North America: An organic molecular perspective on paleotopography and paleohydrology during Cenozoic warm periods, University of Minnesota
Research Type: Poster/Presentation
Microbial alteration of normal alkane d13C and dD in sedimentary archives
Michael Hren
, (2017). Microbial alteration of normal alkane d13C and dD in sedimentary archives, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Organic molecular paleoaltimetry: Applications, uncertainties and pitfalls
Michael Hren
, (2017). Organic molecular paleoaltimetry: Applications, uncertainties and pitfalls, University of Minnesota Tectonics working group
Research Type: Poster/Presentation
Polar ice sheets drive paleohydroclimate affecting terrestrial plant distribution and CO2 exchange potential during the Upper Carboniferous
Michael Hren,
, (2017). Polar ice sheets drive paleohydroclimate affecting terrestrial plant distribution and CO2 exchange potential during the Upper Carboniferous, American Geophysical Union Annual Meeting
Research Type: Poster/Presentation
Polycyclic aromatic hydrocarbons as a proxy for fire in archaeological sediments". Society for American Archaeology Annual Meeting
Michael Hren,
, (2017). Polycyclic aromatic hydrocarbons as a proxy for fire in archaeological sediments". Society for American Archaeology Annual Meeting, Society for American Archaeology Annual Meeting
Research Type: Poster/Presentation
Cenozoic Climate and Tectonic Evolution of western North America: An organic molecular perspective
Michael Hren
, (2017). Cenozoic Climate and Tectonic Evolution of western North America: An organic molecular perspective, Lamont Doherty Earth Observatory (Columbia University)
Research Type: Poster/Presentation
Organic Molecular Proxies for Fire Use in the Middle Paleolithic of the Armenian Highlands
Michael Hren
, (2017). Organic Molecular Proxies for Fire Use in the Middle Paleolithic of the Armenian Highlands, South Caucasus Archeological Colloquium
Research Type: Poster/Presentation
Polycyclic aromatic hydrocarbons as a proxy for fire in archaeological sediments
Michael Hren,
, (2017). Polycyclic aromatic hydrocarbons as a proxy for fire in archaeological sediments, Frontiers in Archaeological Sciences, Rutgers U.
Research Type: Poster/Presentation
Perturbations to the global carbon cycle
Michael Hren
, (2017). Perturbations to the global carbon cycle, 2017 American Chemical Society Undergraduate Research Symposium
Research Type: Poster/Presentation
STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN MASS EXTINCTION INTERVAL (UPPER DEVONIAN) IN THE NORTHERN APPALACHIAN BASIN
Michael Hren,
, (2018). STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN MASS EXTINCTION INTERVAL (UPPER DEVONIAN) IN THE NORTHERN APPALACHIAN BASIN
Research Type: Conference Proceedings
The effect of time-averaging on water isotope-temperature relationships
Michael Hren,
, (2018). The effect of time-averaging on water isotope-temperature relationships, vol. 2018, iss. 2018, PP21F--1483
Research Type: Conference Proceedings
AN ORGANIC MOLECULAR RECORD OF CLIMATE AND FIRE DURING THE LATE PALEOZOIC ICE AGE
Michael Hren,
, (2018). AN ORGANIC MOLECULAR RECORD OF CLIMATE AND FIRE DURING THE LATE PALEOZOIC ICE AGE, Geological Society of America, http://dx.doi.org/10.1130/abs/2018am-322143
Research Type: Conference Proceedings
Eocene to Miocene paleotopographic evolution in southern Patagonian Andes recorded by leaf-wax biomarker hydrogen isotope
, (2018). Eocene to Miocene paleotopographic evolution in southern Patagonian Andes recorded by leaf-wax biomarker hydrogen isotope, vol. 2018, iss. 2018, T51F-0230
Research Type: Conference Proceedings
A RECORD OF EARLY HOLOCENE WILDFIRES AND 18-20 TH CENTURY HUMAN IMPACTS IN AN UPLAND WETLAND IN EASTERN CONNECTICUT
, (2018). A RECORD OF EARLY HOLOCENE WILDFIRES AND 18-20 TH CENTURY HUMAN IMPACTS IN AN UPLAND WETLAND IN EASTERN CONNECTICUT
Research Type: Conference Proceedings
Thermal Maturation of Sedimentary Organic Matter in the Presence of Clay Minerals: n-Alkanes
Michael Hren
, (2018). Thermal Maturation of Sedimentary Organic Matter in the Presence of Clay Minerals: n-Alkanes, vol. 2018, iss. 2018, PP31D-1698
Research Type: Conference Proceedings
Examining leaf-wax signatures from biosynthesis to burial: A systems perspective on interpreting leaf wax records
, (2018). Examining leaf-wax signatures from biosynthesis to burial: A systems perspective on interpreting leaf wax records, vol. 2018, iss. 2018, PP31D-1686
Research Type: Conference Proceedings
THE NONESUCH FORMATION: AN ENIGMATIC WINDOW INTO TERRESTRIAL ENVIRONMENTS DURING THE MESOPROTEROZOIC
Michael Hren,
, (2018). THE NONESUCH FORMATION: AN ENIGMATIC WINDOW INTO TERRESTRIAL ENVIRONMENTS DURING THE MESOPROTEROZOIC, Geological Society of America, http://dx.doi.org/10.1130/abs/2018am-321724
Research Type: Conference Proceedings
Corrigendum:Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate
Michael Hren
, (2018). Corrigendum:Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate, New Phytologist, vol. 215, New Phytologist
Research Type: Journal Article
[Ru II (tpy)(bpy) Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects
Alfredo Angeles-Boza,
, (2018). [Ru II (tpy)(bpy) Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects, Chemical Communications, vol. 54, iss. 61, pp. 8518--8521, Royal Society of Chemistry
Research Type: Journal Article
Michael Hren,
, (2018). Variation in Hydrogen Isotope Composition Among Salt Marsh Plant Organic Compounds Highlights Biochemical Mechanisms Controlling Biosynthetic Fractionation, Journal of Geophysical Research: Biogeosciences, vol. 123, iss. Issue 9, Blackwell Publishing Ltd, 10.1029/2018jg004403
Research Type: Journal Article
Formation of a Rain Shadow: O and H Stable Isotope Records in Authigenic Clays From the Siwalik Group in Eastern Bhutan
Michael Hren,
, (2018). Formation of a Rain Shadow: O and H Stable Isotope Records in Authigenic Clays From the Siwalik Group in Eastern Bhutan, Geology, Geophysics, Geosystems, AGU
Research Type: Journal Article
[RuII(tpy)(bpy)Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects.
Alfredo Angeles-Boza,
Michael Hren
, (2018). [RuII(tpy)(bpy)Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects., Chemical communications (Cambridge, England), vol. 54, iss. 61, pp. 8518-8521
Research Type: Journal Article
Reconstructing vapor pressure deficit from leaf wax lipid molecular distributions
, (2018). Reconstructing vapor pressure deficit from leaf wax lipid molecular distributions, vol. 8, iss. 1, pp. 3967, Scientific reports, 2045-2322
Research Type: Journal Article
[Ru(tpy)(bpy)Cl]-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects
, (2018). [Ru(tpy)(bpy)Cl]-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects, vol. 54, iss. 61, pp. 8518-8521, Chemical communications (Cambridge, England), 1364-548X
Research Type: Journal Article
Variation in hydrogen isotope composition among saltmarsh plant organic compounds highlights potential biochemical mechanisms controlling biosynthetic fractionation
Michael Hren
, (2018). Variation in hydrogen isotope composition among saltmarsh plant organic compounds highlights potential biochemical mechanisms controlling biosynthetic fractionation, Journal Geophysical Research Biogeosciences, pp. 16-Jan
Research Type: Journal Article
Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate (vol 215, pg 1333, 2017)
Michael Hren,
, (2018). Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate (vol 215, pg 1333, 2017), NEW PHYTOLOGIST, vol. 218, iss. 2, pp. 873--874, WILEY 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Research Type: Journal Article
Michael Hren
, (2018). [RuII(tpy)(bpy)Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects, Chemical Communications
Research Type: Journal Article
Organic molecular records of North American Climate and Topography through the Cenozoic
Michael Hren
, (2018). Organic molecular records of North American Climate and Topography through the Cenozoic, Invited Colloquia at University of Birmingham, UK, Europe
Research Type: Poster/Presentation
A record of early Holocene wildfires and 18-20th century human impacts in an upland wetland in eastern Connecticut
Michael Hren
, (2018). A record of early Holocene wildfires and 18-20th century human impacts in an upland wetland in eastern Connecticut, Geological Society of America 2018 Northeastern Section Annual Meeting
Research Type: Poster/Presentation
The Frasnian-Famennian (Late Devonian) extinction event in shallow marine, siliciclastic paleoenvironments of the northern Appalachian Basin, USA
Michael Hren,
, (2018). The Frasnian-Famennian (Late Devonian) extinction event in shallow marine, siliciclastic paleoenvironments of the northern Appalachian Basin, USA, 5th International Palaeontological Congress, France
Research Type: Poster/Presentation
Effect of Atmospheric Gas Concentration on Hydrogen and Carbon Isotope Fractionation in Plant n-alkyl Lipids
Michael Hren,
, (2018). Effect of Atmospheric Gas Concentration on Hydrogen and Carbon Isotope Fractionation in Plant n-alkyl Lipids, Northeast Geobiology Symposium
Research Type: Poster/Presentation
Stratigraphy of the Frasnian-Famennian mass extinction interval (Upper Devonian) in the northern Appalachian Basin
Michael Hren,
, (2018). Stratigraphy of the Frasnian-Famennian mass extinction interval (Upper Devonian) in the northern Appalachian Basin, Geological Society of America Northeast Section Meeting
Research Type: Poster/Presentation
Organic biomarkers and molecular records of North American climate during the Cenozoic
Michael Hren
, (2018). Organic biomarkers and molecular records of North American climate during the Cenozoic, Invited Colloquia at National Center for Scientific Research (CNRS) France, Europe
Research Type: Poster/Presentation
INTEGRATION OF PLANT LIPID BIOMARKERS BY STREAMS IN THE AREGUNI MOUNTAINS, ARMENIAN HIGHLANDS
Michael Hren
, (2019). INTEGRATION OF PLANT LIPID BIOMARKERS BY STREAMS IN THE AREGUNI MOUNTAINS, ARMENIAN HIGHLANDS, Geological Society of America, http://dx.doi.org/10.1130/abs/2019am-338245
Research Type: Conference Proceedings
TOPOGRAPHIC EVOLUTION OF THE SOUTHERN CENTRAL ANDES FROM STABLE ISOTOPE PALEOALTIMETRY OF HYDRATED VOLCANIC GLASS
Michael Hren,
, (2019). TOPOGRAPHIC EVOLUTION OF THE SOUTHERN CENTRAL ANDES FROM STABLE ISOTOPE PALEOALTIMETRY OF HYDRATED VOLCANIC GLASS, Geological Society of America, http://dx.doi.org/10.1130/abs/2019cd-329456
Research Type: Conference Proceedings
Steady topography of Patagonian Andes through Cenozoic reconstructed by archives of precipitation hydrogen isotope composition
, (2019). Steady topography of Patagonian Andes through Cenozoic reconstructed by archives of precipitation hydrogen isotope composition, vol. 2019, iss. 2019, T41G-0343
Research Type: Conference Proceedings
Hypsometric Integration of Hydrogen Signatures in Modern Catchment Organic Matter
Michael Hren,
, (2019). Hypsometric Integration of Hydrogen Signatures in Modern Catchment Organic Matter, vol. 2019, iss. 2019, PP23E-1699
Research Type: Conference Proceedings
Water isotope evidence for steady Cenozoic topography in the southern Andes (50 to 35° S)
Michael Hren,
, (2019). Water isotope evidence for steady Cenozoic topography in the southern Andes (50 to 35° S), vol. 2019, iss. 2019, T52B--07
Research Type: Conference Proceedings
The physiological landscape of the Carboniferous: Freezing, Vegetation, and Earth System Processes
Michael Hren
, (2019). The physiological landscape of the Carboniferous: Freezing, Vegetation, and Earth System Processes, vol. 2019, iss. 2019, PP51E-1413
Research Type: Conference Proceedings
Water isotope evidence for steady Cenozoic topography in the southern Andes ( 50 to 35\textdegreeS)
, (2019). Water isotope evidence for steady Cenozoic topography in the southern Andes ( 50 to 35\textdegreeS), vol. 2019, iss. 2019, T52B-07
Research Type: Conference Proceedings
THE ENVIRONMENTAL CONTEXT OF CHANGING MAMMAL DIVERSITY THROUGH THE MIDDLE MIOCENE CLIMATIC OPTIMUM IN THE BARSTOW FORMATION, MOJAVE DESERT, CALIFORNIA
Michael Hren,
, (2019). THE ENVIRONMENTAL CONTEXT OF CHANGING MAMMAL DIVERSITY THROUGH THE MIDDLE MIOCENE CLIMATIC OPTIMUM IN THE BARSTOW FORMATION, MOJAVE DESERT, CALIFORNIA, Geological Society of America, http://dx.doi.org/10.1130/abs/2019am-335836
Research Type: Conference Proceedings
One-Km of Subduction-Induced Subsidence in the Southern Andes at 10 Ma, as Measured Using Hydrogen Isotopes in Hydrated Volcanic Glass
Michael Hren
, (2019). One-Km of Subduction-Induced Subsidence in the Southern Andes at 10 Ma, as Measured Using Hydrogen Isotopes in Hydrated Volcanic Glass, vol. 2019, iss. 2019, T41G-0342
Research Type: Conference Proceedings
CENOZOIC CLIMATE AND TOPOGRAPHIC CHANGE IN THE SOUTHERN ANDES (35°-47°S): A COMPARISON OF ORGANIC MOLECULAR AND INORGANIC ISOTOPIC RECORDS
Michael Hren,
, (2019). CENOZOIC CLIMATE AND TOPOGRAPHIC CHANGE IN THE SOUTHERN ANDES (35°-47°S): A COMPARISON OF ORGANIC MOLECULAR AND INORGANIC ISOTOPIC RECORDS, Geological Society of America, http://dx.doi.org/10.1130/abs/2019am-339170
Research Type: Conference Proceedings
Geochemical Evidence for the Control of Fire by Middle Palaeolithic Hominins
Michael Hren,
Gideon Hartman
, (2019). Geochemical Evidence for the Control of Fire by Middle Palaeolithic Hominins, Scientific Reports, vol. 9, iss. 1
Research Type: Journal Article
Gideon Hartman
, (2019). Influence of the North Atlantic Oscillation on _D and _18O in meteoric water in the Armenian Highland, Journal of Hydrology, vol. 575, pp. 513-522, 10.1016/j.jhydrol.2019.05.064
Research Type: Journal Article
The effect of soil temperature seasonality on climate reconstructions from paleosols
Michael Hren,
, (2019). The effect of soil temperature seasonality on climate reconstructions from paleosols, American Journal of Science, vol. 319, iss. 7, pp. 549-581, American Journal of Science (AJS)
Research Type: Journal Article
, (2019). An abrupt decrease in Southern Hemisphere terrestrial temperature during the Eocene–Oligocene transition, Earth and Planetary Science Letters, vol. 512, iss. Issue, Elsevier B.V., 10.1016/j.epsl.2019.01.052
Research Type: Journal Article
Michael Hren
, (2019). Microbial and Geochronologic Constraints on the Neogene Paleotopography of Northern Tibetan Plateau, Geophysical Research Letters
Research Type: Journal Article
Influence of the North Atlantic Oscillation on \deltaD and \delta18O in meteoric water in the Armenian Highland
Gideon Hartman,
Michael Hren,
, (2019). Influence of the North Atlantic Oscillation on \deltaD and \delta18O in meteoric water in the Armenian Highland, Journal of Hydrology, vol. 575, pp. 513--522, Elsevier
Research Type: Journal Article
Eocene to modern topographic evolution of an Andean retroarc foreland basin (35° S) from stable isotope paleoaltimetry: implications for tectonic and geodynamic models
Michael Hren,
, (2019). Eocene to modern topographic evolution of an Andean retroarc foreland basin (35° S) from stable isotope paleoaltimetry: implications for tectonic and geodynamic models, International Society for Animal Genetics
Research Type: Journal Article
Michael Hren
, (2019). Growth and steady state of the Patagonian Andes, American Journal of Science
Research Type: Journal Article
The Frasnian-Fammenian (Late Devonian) extinction event in New York and Pennsylvania: stratigraphic and paleoenvironmental context
Michael Hren,
, (2019). The Frasnian-Fammenian (Late Devonian) extinction event in New York and Pennsylvania: stratigraphic and paleoenvironmental context, 11th North American Paleontological Convention, North America
Research Type: Poster/Presentation
Water isotope evidence for steady Cenozoic topography in the southern Andes (50 to 35°S)
Michael Hren,
, (2019). Water isotope evidence for steady Cenozoic topography in the southern Andes (50 to 35°S), American Geophysical Union, Fall Meeting 2019
Research Type: Poster/Presentation
Biotic and environmental records of the Frasnian-Famennian (Late Devonian) extinction event in shallow marine paleoenvironments of New York and Pennsylvania
Michael Hren,
, (2019). Biotic and environmental records of the Frasnian-Famennian (Late Devonian) extinction event in shallow marine paleoenvironments of New York and Pennsylvania, Northeast Geobiology 2019 Meeting
Research Type: Poster/Presentation
PRELIMINARY ANALYSES OF δ15N IN THE SHALLOW APPALACHIAN BASIN ASSOCIATED WITH THE LATE DEVONIAN MASS EXTINCTION EVENT
Michael Hren,
, (2020). PRELIMINARY ANALYSES OF δ15N IN THE SHALLOW APPALACHIAN BASIN ASSOCIATED WITH THE LATE DEVONIAN MASS EXTINCTION EVENT, Geological Society of America, http://dx.doi.org/10.1130/abs/2020se-345313
Research Type: Conference Proceedings
HISTORIC LAND USE IMPACTS ON UPLAND SOILS AND EROSION IN SOUTHERN NEW ENGLAND
Michael Hren,
, (2020). HISTORIC LAND USE IMPACTS ON UPLAND SOILS AND EROSION IN SOUTHERN NEW ENGLAND, Geological Society of America, http://dx.doi.org/10.1130/abs/2020am-357821
Research Type: Conference Proceedings
ANTHROPOGENIC MODIFICATIONS TO UPLAND SOILS FROM HISTORIC LAND USE IN SOUTHERN NEW ENGLAND
Michael Hren,
, (2020). ANTHROPOGENIC MODIFICATIONS TO UPLAND SOILS FROM HISTORIC LAND USE IN SOUTHERN NEW ENGLAND, Geological Society of America, http://dx.doi.org/10.1130/abs/2020se-345214
Research Type: Conference Proceedings
Plant Biomarker Isotopes and Catchment Integration of Organic Matter in Tropical, Rapidly Eroding Catchments of Eastern Taiwan: Implications for Paleotopography Reconstruction
Michael Hren
, (2020). Plant Biomarker Isotopes and Catchment Integration of Organic Matter in Tropical, Rapidly Eroding Catchments of Eastern Taiwan: Implications for Paleotopography Reconstruction
Research Type: Conference Proceedings
One-Km of Subduction-Induced Subsidence of the Eastern Side of the Southern Andes at 10 Ma, as Measured Using Hydrogen Isotopes in Hydrated Volcanic Glass
Michael Hren,
, (2020). One-Km of Subduction-Induced Subsidence of the Eastern Side of the Southern Andes at 10 Ma, as Measured Using Hydrogen Isotopes in Hydrated Volcanic Glass, EGU General Assembly 2020, https://doi.org/10.5194/egusphere-egu2020-21116, https://doi.org/10.5194/egusphere-egu2020-21116
Research Type: Conference Proceedings
Organic Molecular and Inorganic Isotope Records of Cenozoic Topography, Ecosystem and Climate Evolution of the Southern Central Andes
Michael Hren,
, (2020). Organic Molecular and Inorganic Isotope Records of Cenozoic Topography, Ecosystem and Climate Evolution of the Southern Central Andes, Geochemical Society, http://dx.doi.org/10.46427/gold2020.1073
Research Type: Conference Proceedings
A framework to quantify paleogeomorphologic responses to ancient climate change
Michael Hren,
, (2020). A framework to quantify paleogeomorphologic responses to ancient climate change
Research Type: Conference Proceedings
Temperature decrease through the Eocene-Oligocene transition controls eco-hydrologic shifts in Central Asia
Michael Hren,
, (2020). Temperature decrease through the Eocene-Oligocene transition controls eco-hydrologic shifts in Central Asia, European Geophysical Union Proceedings, vol. EGU2020-10034, iss. EGU2020-10034
Research Type: Conference Proceedings
Signals in (Ancient) Soils: How do Geomorphic Processes Affect the Mixing of Local and Catchment-Averaged Climate Signals in Sedimentary Basins?
Michael Hren,
, (2020). Signals in (Ancient) Soils: How do Geomorphic Processes Affect the Mixing of Local and Catchment-Averaged Climate Signals in Sedimentary Basins?
Research Type: Conference Proceedings
Topographic and surface processes response to tectonic and climate across different timescale in Taiwan
Michael Hren,
, (2020). Topographic and surface processes response to tectonic and climate across different timescale in Taiwan
Research Type: Conference Proceedings
Barozh 12: Formation processes of a late Middle Paleolithic open-air site in western Armenia
Michael Hren,
, (2020). Barozh 12: Formation processes of a late Middle Paleolithic open-air site in western Armenia, Quaternary Science Reviews, vol. 236
Research Type: Journal Article
A process-based ecosystem model (Paleo-BGC) to simulate the dynamic response of Late Carboniferous plants to elevated O2 and aridification
Michael Hren,
, (2020). A process-based ecosystem model (Paleo-BGC) to simulate the dynamic response of Late Carboniferous plants to elevated O2 and aridification, American Journal of Science, vol. 320, iss. 7, pp. 547--598, American Journal of Science
Research Type: Journal Article
Profiling interactions between the Westerlies and Asian summer monsoons since 45 ka: Insights from biomarker, isotope, and numerical modeling studies in the Qaidam Basin
Michael Hren,
, (2020). Profiling interactions between the Westerlies and Asian summer monsoons since 45 ka: Insights from biomarker, isotope, and numerical modeling studies in the Qaidam Basin, GSA Bulletin
Research Type: Journal Article
Michael Hren
, (2020). Terrestrial microbialites provide constraints on the mesoproterozoic atmosphere, Depositional Record
Research Type: Journal Article
Michael Hren
, (2020). Vegetation and habitat change in Southern California through the middle miocene climatic optimum: Paleoenvironmental records from the Barstow Formation, Mojave Desert, USA, Bulletin of the Geological Society of America
Research Type: Journal Article
Carboniferous plant physiology breaks the mold
Michael Hren,
, (2020). Carboniferous plant physiology breaks the mold, New Phytologist
Research Type: Journal Article
Michael Hren
, (2020). A process-based ecosystem model (paleo-bgc) to simulate the dynamic response of late carboniferous plants to elevated O2and aridification, American Journal of Science
Research Type: Journal Article
Post-charring diagenetic alteration of archaeological lentils by bacterial degradation
Michael Hren,
Gideon Hartman,
, (2020). Post-charring diagenetic alteration of archaeological lentils by bacterial degradation, Journal of Archaeological Science, vol. 117
Research Type: Journal Article
Constraining the dynamic climatic boundary between the Westerlies and Asian monsoon since 45 ka with biomarker, isotope, and climatic modeling studies
Michael Hren,
, (2020). Constraining the dynamic climatic boundary between the Westerlies and Asian monsoon since 45 ka with biomarker, isotope, and climatic modeling studies, Geological Society of America Bulletin, Geological Society of America, 10.1130/B35751.1
Research Type: Journal Article
Preliminary analyses of Δ15N in the shallow Appalachian Basin associated with the Late Devonian Mass Extinction Event
Michael Hren,
, (2020). Preliminary analyses of Δ15N in the shallow Appalachian Basin associated with the Late Devonian Mass Extinction Event, Geological Society of America, Joint NE-SE Section Meeting
Research Type: Poster/Presentation
Historic land use impacts on erosion and upland soils in southern New England
Michael Hren,
, (2020). Historic land use impacts on erosion and upland soils in southern New England, 2020 Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Anthropogenic Modifications To Upland Soils From Historic Land Use In Southern New England
Michael Hren,
, (2020). Anthropogenic Modifications To Upland Soils From Historic Land Use In Southern New England, Geological Society of America 2020 Northeastern Section Annual Meeting
Research Type: Poster/Presentation
Tidal restriction legacies in salt marsh soil organic matter
Beth A. Lawrence,
Michael Hren,
, (2020). Tidal restriction legacies in salt marsh soil organic matter, Connecticut Conference on Natural Resources
Research Type: Poster/Presentation
CLIMATIC AND GEOMORPHIC CONTROLS ON ISOTOPE GEOCHEMICAL SIGNATURES OF FLUVIAL SEDIMENTARY ARCHIVES IN GAOPING SOURCE-TO-SINK SYSTEM, SOUTHWESTERN TAIWAN
Clay Tabor,
Michael Hren,
, (2021). CLIMATIC AND GEOMORPHIC CONTROLS ON ISOTOPE GEOCHEMICAL SIGNATURES OF FLUVIAL SEDIMENTARY ARCHIVES IN GAOPING SOURCE-TO-SINK SYSTEM, SOUTHWESTERN TAIWAN, Geological Society of America, http://dx.doi.org/10.1130/abs/2021ne-361629
Research Type: Conference Proceedings
Evaluating the Preservation Potential of Buried Organic Carbon: A Laboratory and Field Study of the Impact of Burial Diagenesis on Stable Isotopic and Organic Molecular Records
Michael Hren
, (2021). Evaluating the Preservation Potential of Buried Organic Carbon: A Laboratory and Field Study of the Impact of Burial Diagenesis on Stable Isotopic and Organic Molecular Records
Research Type: Conference Proceedings
MULTI-PROXY ANALYSIS OF THE LOWER KELLWASSER EVENT IN THE APPALACHIAN BASIN
Michael Hren,
, (2021). MULTI-PROXY ANALYSIS OF THE LOWER KELLWASSER EVENT IN THE APPALACHIAN BASIN, Geological Society of America, http://dx.doi.org/10.1130/abs/2021am-369159
Research Type: Conference Proceedings
BULK GEOCHEMISTRY AND MAGNETIC SUSCEPTIBLY OF PALEOSOLS ACROSS THE EOCENE-OLIGOCENE TRANSITION OF THE NORTHERN GREAT PLAINS (WHITE RIVER GROUP), USA
Michael Hren,
, (2021). BULK GEOCHEMISTRY AND MAGNETIC SUSCEPTIBLY OF PALEOSOLS ACROSS THE EOCENE-OLIGOCENE TRANSITION OF THE NORTHERN GREAT PLAINS (WHITE RIVER GROUP), USA, Geological Society of America, http://dx.doi.org/10.1130/abs/2021ne-361601
Research Type: Conference Proceedings
A Framework for Constraining Paleohydrological Changes in North America across the Eocene-Oligocene Greenhouse to Icehouse Transition: Integrating Geomorphic, Sedimentological and Geochemical Tools
Michael Hren,
, (2021). A Framework for Constraining Paleohydrological Changes in North America across the Eocene-Oligocene Greenhouse to Icehouse Transition: Integrating Geomorphic, Sedimentological and Geochemical Tools, vol. 2021, EP34D--02
Research Type: Conference Proceedings
PRELIMINARY ANALYSES OF Δ15N IN THE SHALLOW APPALACHIAN BASIN ASSOCIATED WITH THE LATE DEVONIAN MASS EXTINCTION EVENT
Michael Hren,
, (2021). PRELIMINARY ANALYSES OF Δ15N IN THE SHALLOW APPALACHIAN BASIN ASSOCIATED WITH THE LATE DEVONIAN MASS EXTINCTION EVENT, Geological Society of America, http://dx.doi.org/10.1130/abs/2021ne-361740
Research Type: Conference Proceedings
Freeze tolerance influenced forest cover and hydrology during the Pennsylvanian
Michael Hren,
, (2021). Freeze tolerance influenced forest cover and hydrology during the Pennsylvanian, Proceedings of the National Academy of Sciences, vol. 118, iss. 42, Proceedings of the National Academy of Sciences
Research Type: Journal Article
Accelerated mass extinction in an isolated biota during Late Devonian climate changes
Michael Hren
, (2021). Accelerated mass extinction in an isolated biota during Late Devonian climate changes, Scientific Reports, vol. 11, pp. 24366
Research Type: Journal Article
Michael Hren
, (2021). Stable isotope records of nursing and weaning: A case study in elephants with implications for paleobiological investigations, Palaeogeography, Palaeoclimatology, Palaeoecology
Research Type: Journal Article
A biomarker stable isotope record of late Quaternary climate change in Southwestern Taiwan
Michael Hren,
, (2021). A biomarker stable isotope record of late Quaternary climate change in Southwestern Taiwan, American Journal of Science
Research Type: Journal Article
Michael Hren
, (2021). Profiling interactions between the Westerlies and Asian summer monsoons since 45 ka: Insights from biomarker, isotope, and numerical modeling studies in the Qaidam Basin, Bulletin of the Geological Society of America
Research Type: Journal Article
Gradients of geochemical change in relic charcoal hearth soils, Northwestern Connecticut, USA
Michael Hren,
, (2021). Gradients of geochemical change in relic charcoal hearth soils, Northwestern Connecticut, USA, Catena, vol. 197, pp. 104991, CATENA
Research Type: Journal Article
Short-term occupations at high elevation during the Middle Paleolithic at Kalavan 2 (Republic of Armenia)
Michael Hren,
, (2021). Short-term occupations at high elevation during the Middle Paleolithic at Kalavan 2 (Republic of Armenia), PloS one, vol. 16, iss. 2, e0245700, Public Library of Science San Francisco, CA USA
Research Type: Journal Article
Organic Molecular Paleohypsometry: A New Approach to Quantifying Paleotopography and Paleorelief
Michael Hren
, (2021). Organic Molecular Paleohypsometry: A New Approach to Quantifying Paleotopography and Paleorelief, Frontiers in Earth Science, vol. 9, pp. 18-Jan, Frontiers Media SA
Research Type: Journal Article
Terrestrial biomarker isotope records of late Quaternary climate and source-to-sink sediment transport processes in southwestern Taiwan
Michael Hren,
Clay Tabor
, (2021). Terrestrial biomarker isotope records of late Quaternary climate and source-to-sink sediment transport processes in southwestern Taiwan, American Journal of Science, vol. 321, iss. 4, pp. 393-423, American Journal of Science (AJS)
Research Type: Journal Article
Michael Hren
, (2021). Short-Term occupations at high elevation during the Middle Paleolithic at Kalavan 2 (Republic of Armenia), PLoS ONE
Research Type: Journal Article
Michael Hren
, (2021). Climate Change and Mass Extinction Risk in an Endemic-Rich Late Devonian Fauna, Research Square
Research Type: Other Scholarly Work
Multi-proxy analysis of the Lower Kellwasser Event in the Appalachian Basin
Michael Hren,
, (2021). Multi-proxy analysis of the Lower Kellwasser Event in the Appalachian Basin, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Reconstructing River Dynamics across the Eocene-Oligocene Greenhouse to Icehouse Transition in North America
Michael Hren
, (2022). Reconstructing River Dynamics across the Eocene-Oligocene Greenhouse to Icehouse Transition in North America, vol. 2022, EP52B--0767
Research Type: Conference Proceedings
The Influence of Climate, Tectonics, and Topography on the Production, Decay, and Transport of Terrestrial Organic Carbon
Michael Hren
, (2022). The Influence of Climate, Tectonics, and Topography on the Production, Decay, and Transport of Terrestrial Organic Carbon, vol. 2022, EP55B--07
Research Type: Conference Proceedings
A New Framework for Generating Stochastic and Representative River Hydrographs for Long-term Simulations
Michael Hren,
, (2022). A New Framework for Generating Stochastic and Representative River Hydrographs for Long-term Simulations, vol. 2022, H42E--1309
Research Type: Conference Proceedings
CHAPTER 9: STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN BOUNDARY INTERVAL IN SHALLOW-MARINE PALEOENVIRONMENTS OF NEW YORK AND NORTH-CENTRAL PENNSYLVANIA (WISCOY-CANEADEA FORMATIONS, UPPER DEVONIAN)
Michael Hren,
, (2022). CHAPTER 9: STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN BOUNDARY INTERVAL IN SHALLOW-MARINE PALEOENVIRONMENTS OF NEW YORK AND NORTH-CENTRAL PENNSYLVANIA (WISCOY-CANEADEA FORMATIONS, UPPER DEVONIAN), Geological Society of America, http://dx.doi.org/10.1130/abs/2022ne-374799
Research Type: Conference Proceedings
Climate and hydrology across the Eocene-Oligocene transition in North America: Rivers, biomarkers and geochemical biases
Michael Hren,
, (2022). Climate and hydrology across the Eocene-Oligocene transition in North America: Rivers, biomarkers and geochemical biases, vol. 2022, PP35B--04
Research Type: Conference Proceedings
Ecosystem-to-Global Scale Modeling of Vegetation-Climate Feedbacks During the Late Paleozoic Ice Age with Fossil-Based Plant Functional Types
Michael Hren,
, (2022). Ecosystem-to-Global Scale Modeling of Vegetation-Climate Feedbacks During the Late Paleozoic Ice Age with Fossil-Based Plant Functional Types
Research Type: Conference Proceedings
Climate-driven Shifts in C and N Burial in an Anoxic Lake Sinkhole
Michael Hren
, (2022). Climate-driven Shifts in C and N Burial in an Anoxic Lake Sinkhole, vol. 2022, PP55C--0478
Research Type: Conference Proceedings
PRESERVATION POTENTIAL OF SEDIMENTARY ORGANIC BIOMARKERS IN THE PRESENCE OF CLAY MINERALS
Michael Hren,
, (2022). PRESERVATION POTENTIAL OF SEDIMENTARY ORGANIC BIOMARKERS IN THE PRESENCE OF CLAY MINERALS, Geological Society of America, http://dx.doi.org/10.1130/abs/2022ne-375352
Research Type: Conference Proceedings
MOUNTAINS, RIVERS AND CARBON: CATCHMENT INTEGRATION OF ORGANIC MATTER AND ISOTOPIC RECORDS OF PALEOELEVATION
Michael Hren,
, (2022). MOUNTAINS, RIVERS AND CARBON: CATCHMENT INTEGRATION OF ORGANIC MATTER AND ISOTOPIC RECORDS OF PALEOELEVATION, Geological Society of America, http://dx.doi.org/10.1130/abs/2022ne-375304
Research Type: Conference Proceedings
Mountains, Biomarker Isotopes and Fluvial Systems
Michael Hren
, (2022). Mountains, Biomarker Isotopes and Fluvial Systems
Research Type: Conference Proceedings
Nitrogen Isotope Signatures in Lake Huron's Middle Island Sinkhole Sediments
Michael Hren,
, (2022). Nitrogen Isotope Signatures in Lake Huron's Middle Island Sinkhole Sediments, vol. 2022, H32P--1113
Research Type: Conference Proceedings
Evoluci\'on tect\'onica y paleotopogr\'afica de los Andes Centrales del Sur (33°-37° S)
Michael Hren,
, (2022). Evoluci\'on tect\'onica y paleotopogr\'afica de los Andes Centrales del Sur (33°-37° S), Asociaci\'on Geol\'ogica Argentina
Research Type: Conference Proceedings
River Dynamics, Carbon Residence Times, and Earth's Climate
Michael Hren,
, (2022). River Dynamics, Carbon Residence Times, and Earth's Climate, vol. 2022, EP55B--08
Research Type: Conference Proceedings
Michael Hren
, (2022). BULK CARBON ISOTOPIC VARIABILITY WITHIN LEAVES, Palaios
Research Type: Journal Article
A multivariate approach to polycyclic aromatic hydrocarbon source apportionment in Connecticut, USA using compound-specific isotopic compositions
Michael Hren,
, (2022). A multivariate approach to polycyclic aromatic hydrocarbon source apportionment in Connecticut, USA using compound-specific isotopic compositions, Environmental Earth Sciences, vol. 81, iss. 6, Springer Science and Business Media LLC
Research Type: Journal Article
Bulk Carbon Isotopic Variability Within Leaves
Michael Hren,
, (2022). Bulk Carbon Isotopic Variability Within Leaves, Palaios, vol. 37, iss. 8, pp. 411--417, Society for Sedimentary Geology
Research Type: Journal Article
Organic Molecular paleohypsometry: A new approach to quantifying the topographic evolution of mountain systems
Michael Hren
, (2022). Organic Molecular paleohypsometry: A new approach to quantifying the topographic evolution of mountain systems, University of Texas Arlington Geosciences Colloquium
Research Type: Poster/Presentation
Chapter 9: Stratigraphy of the Frasnian-Famennian boundary interval in shallow-marine paleoenvironments of New York and north-central Pennsylvania (Wiscoy-Caneadea formations, Upper Devonian)
Michael Hren,
, (2022). Chapter 9: Stratigraphy of the Frasnian-Famennian boundary interval in shallow-marine paleoenvironments of New York and north-central Pennsylvania (Wiscoy-Caneadea formations, Upper Devonian), Geological Society of America, NE Section Meeting
Research Type: Poster/Presentation
Stratigraphy of the Frasnian-Famennian boundary interval in shallow-marine paleoenvironments of New York and north-central Pennsylvania (Wiscoy-Caneadea formations, Upper Devonian)
Michael Hren,
, (2023). Stratigraphy of the Frasnian-Famennian boundary interval in shallow-marine paleoenvironments of New York and north-central Pennsylvania (Wiscoy-Caneadea formations, Upper Devonian), Devonian of New York, Volume 3: Frasnian to Famennian (Upper Devonian) Stages and the Devonian Terrestrial System in New York, pp. 29-46, Paleontological Research Association
Research Type: Book Chapter
Leaf wax isotopes indicate higher than modern early Eocene topography in the Himalayan-Tibetan orogen
Michael Hren
, (2023). Leaf wax isotopes indicate higher than modern early Eocene topography in the Himalayan-Tibetan orogen, AGU23, AGU
Research Type: Conference Proceedings
Isotope Paleotopography Evidence for Formation of the Sierraas Pampeanas Basement Uplifts before 55 Ma
Michael Hren,
, (2023). Isotope Paleotopography Evidence for Formation of the Sierraas Pampeanas Basement Uplifts before 55 Ma, AGU23, AGU
Research Type: Conference Proceedings
Fire, Work with Me: A PAH record from a Southwestern US speleothem
Michael Hren
, (2023). Fire, Work with Me: A PAH record from a Southwestern US speleothem, EGU--16912
Research Type: Conference Proceedings
Differential effects of clay mineralogy on thermal maturation of sedimentary n-alkanes
Michael Hren
, (2023). Differential effects of clay mineralogy on thermal maturation of sedimentary n-alkanes, Chemical Geology, vol. 634, pp. 121572, Elsevier
Research Type: Journal Article
River Response to Environmental Change: Leveraging Earth’s Self-recorded Sedimentary and Biogeochemical Archives to Calibrate Hydrologic and Geomorphic Models
Michael Hren,
, (2023). River Response to Environmental Change: Leveraging Earth’s Self-recorded Sedimentary and Biogeochemical Archives to Calibrate Hydrologic and Geomorphic Models, AGU23, AGU
Research Type: Journal Article
Integrating Stable Water and Bulk Carbon Isotope Compositions: Measuring Spring Onset Water-Use in Conifers
Michael Hren,
, (2023). Integrating Stable Water and Bulk Carbon Isotope Compositions: Measuring Spring Onset Water-Use in Conifers, AGU23, AGU
Research Type: Journal Article
STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN BOUNDARY INTERVAL IN SHALLOWMARINE PALEOENVIRONMENTS OF NEW YORK AND NORTH-CENTRAL PENNSYLVANIA (WISCOY--CANEADEA FORMATIONS, UPPER DEVONIAN).
Michael Hren,
, (2023). STRATIGRAPHY OF THE FRASNIAN-FAMENNIAN BOUNDARY INTERVAL IN SHALLOWMARINE PALEOENVIRONMENTS OF NEW YORK AND NORTH-CENTRAL PENNSYLVANIA (WISCOY--CANEADEA FORMATIONS, UPPER DEVONIAN)., Bulletins of American Paleontology
Research Type: Journal Article
Evaluating Multi-scale Inputs LSTM vs Conceptual Models for Hourly Rainfall-Runoff Simulations
Michael Hren
, (2023). Evaluating Multi-scale Inputs LSTM vs Conceptual Models for Hourly Rainfall-Runoff Simulations, AGU23, AGU
Research Type: Journal Article
Michael Hren
, (2023). A multidisciplinary approach to resolving the end-Guadalupian extinction, Evolving Earth
Research Type: Journal Article
Reconstructing Hydrodynamics and Sediment Transport through Ephemeral Streams during the Oligocene Intensification of the North American Monsoon
Michael Hren,
, (2023). Reconstructing Hydrodynamics and Sediment Transport through Ephemeral Streams during the Oligocene Intensification of the North American Monsoon, AGU23, AGU
Research Type: Journal Article
Rapid topographic growth of the Taiwan orogen since ~1.3-1.5 Ma
, (2023). Rapid topographic growth of the Taiwan orogen since ~1.3-1.5 Ma, vol. 9, iss. 25, eade6415, Science advances, 2375-2548
Research Type: Journal Article
Rapid topographic growth of the Taiwan orogen since ∼1.3-1.5 Ma
Michael Hren,
, (2023). Rapid topographic growth of the Taiwan orogen since ∼1.3-1.5 Ma, Science Advances, vol. 9, iss. 25
Research Type: Journal Article
The Evolution of River Landscapes during the Eocene-Oligocene Transition in Central North America
Michael Hren
, (2023). The Evolution of River Landscapes during the Eocene-Oligocene Transition in Central North America, AGU23, AGU
Research Type: Journal Article
Hydroclimate-fire links in the Western US through the last deglaciation as recorded by PAHs within a speleothem
Michael Hren,
, (2023). Hydroclimate-fire links in the Western US through the last deglaciation as recorded by PAHs within a speleothem, AGU23, AGU
Research Type: Journal Article
Lessons Learned and New Approaches to Long-Term Fluvial Geomorphic Modeling
Michael Hren
, (2023). Lessons Learned and New Approaches to Long-Term Fluvial Geomorphic Modeling, AGU23, AGU
Research Type: Journal Article
The Influence of Convection on Estimating Paleotopography with Precipitation Isotopes.
Michael Hren,
, (2023). The Influence of Convection on Estimating Paleotopography with Precipitation Isotopes., AGU23, AGU
Research Type: Journal Article
Organic Molecular Paleohypsometric Reconstruction Reveals Rapid Growth of Taiwan Hsuehshan Range.
Michael Hren,
, (2023). Organic Molecular Paleohypsometric Reconstruction Reveals Rapid Growth of Taiwan Hsuehshan Range., AGU23, AGU
Research Type: Journal Article
Cenozoic topographic evolution of the Southern Central Andes foreland as revealed by hydrogen stable isotopes in hydrated volcanic glass
Michael Hren,
, (2023). Cenozoic topographic evolution of the Southern Central Andes foreland as revealed by hydrogen stable isotopes in hydrated volcanic glass, Earth and Planetary Science Letters, vol. 604, pp. 117991, Elsevier
Research Type: Journal Article
Rapid topographic growth of the Taiwan orogen since\~ 1.3--1.5 Ma
Michael Hren,
, (2023). Rapid topographic growth of the Taiwan orogen since\~ 1.3--1.5 Ma, Science Advances, vol. 9, iss. 25, eade6415, American Association for the Advancement of Science
Research Type: Journal Article
Contextualizing Early Oligocene Fluvial Strata with Hydraulic and Catchment Properties of Contemporary Great Plains Streams
Michael Hren,
, (2023). Contextualizing Early Oligocene Fluvial Strata with Hydraulic and Catchment Properties of Contemporary Great Plains Streams, AGU23, AGU
Research Type: Journal Article
A paleoenvironmental reappraisal of the Pennsylvanian (Bashkirian-Moscovian) South Bar Formation and lower Sydney Mines Formation of Cape Breton, Atlantic Canada
Michael Hren,
, (2023). A paleoenvironmental reappraisal of the Pennsylvanian (Bashkirian-Moscovian) South Bar Formation and lower Sydney Mines Formation of Cape Breton, Atlantic Canada, Geological Society of America Annual Meeting, United States of America
Research Type: Poster/Presentation
CLIMATE VARIABILITY IN SOUTHWESTERN GONDWANA AT THE END OF THE LATE PALEOZOIC ICE AGE: A SEDIMENTOLOGICAL AND GEOCHEMICAL APPROACH
Michael Hren,
, (2023). CLIMATE VARIABILITY IN SOUTHWESTERN GONDWANA AT THE END OF THE LATE PALEOZOIC ICE AGE: A SEDIMENTOLOGICAL AND GEOCHEMICAL APPROACH, The Geological Society of America Connects 2023
Research Type: Poster/Presentation
Shallow marine nitrogen cycling during the Frasnian-Famennian mass extinction in the Appalachian Basin
Michael Hren,
, (2023). Shallow marine nitrogen cycling during the Frasnian-Famennian mass extinction in the Appalachian Basin, Geological Society of America Annual Meeting
Research Type: Poster/Presentation
Michael Hren
, (2024). Regional Variations of the Azores High Across Glacial-Interglacial Timescales, Paleoceanography and Paleoclimatology
Research Type: Journal Article
Weathering pulses during glacial-interglacial transitions: Insights from well-dated paleosols in the Azores volcanic province (Central North Atlantic)
Michael Hren,
, (2024). Weathering pulses during glacial-interglacial transitions: Insights from well-dated paleosols in the Azores volcanic province (Central North Atlantic), Quaternary Science Reviews, vol. 324, pp. 108438, Pergamon
Research Type: Journal Article
Evidence for variations in cryogenic extraction deuterium biases of plant xylem water across foundational northeastern US trees
Michael Hren
, (2024). Evidence for variations in cryogenic extraction deuterium biases of plant xylem water across foundational northeastern US trees, Hydrological Processes
Research Type: Journal Article
Proto-monsoon rainfall and greening in Central Asia due to extreme early Eocene warmth
, (2024). Proto-monsoon rainfall and greening in Central Asia due to extreme early Eocene warmth, Nature Geoscience, pp. 1--7, Nature Publishing Group UK London
Research Type: Journal Article
Legacy Impacts and Recovery of \delta15N, \delta13C and C/N Storage in Soils Due to Historic Land Use
Michael Hren
, (2024). Legacy Impacts and Recovery of \delta15N, \delta13C and C/N Storage in Soils Due to Historic Land Use, Anthropocene, pp. 100435, Elsevier
Research Type: Journal Article
Legacy impacts and recovery of δ15N, δ13C and C/N storage in soils due to historic land use
Michael Hren
, (2024). Legacy impacts and recovery of δ15N, δ13C and C/N storage in soils due to historic land use, Anthropocene, vol. 46
Research Type: Journal Article
The environmental and cultural background for the reoccupation of the Armenian Highlands after the Last Glacial Maximum: The contribution of Kalavan 6
Michael Hren
, (2024). The environmental and cultural background for the reoccupation of the Armenian Highlands after the Last Glacial Maximum: The contribution of Kalavan 6, Journal of Archaeological Science: Reports, vol. 56
Research Type: Journal Article
River Floodplains, Organic Carbon, and Paleoclimate: How River Dynamics Impart Biases in the Biogeochemical Climate Record of Terrestrial Landscapes
Michael Hren,
, (2024). River Floodplains, Organic Carbon, and Paleoclimate: How River Dynamics Impart Biases in the Biogeochemical Climate Record of Terrestrial Landscapes, EarthArXiv
Research Type: Journal Article
Michael Hren,
, (2024). Constructing Long-Term Hydrographs for River Climate-Resilience: A Novel Approach for Studying Centennial to Millennial River Behavior, Water Resources Research, vol. 60, iss. 10, John Wiley and Sons Inc, 10.1029/2024WR037666
Research Type: Journal Article
Reconstructing Paleofire-Climate Connections in Speleothems Using Organic Molecules: A Source to Sink Perspective
Michael Hren,
, (2024). Reconstructing Paleofire-Climate Connections in Speleothems Using Organic Molecules: A Source to Sink Perspective, Copernicus Meetings
Research Type: Other Scholarly Work
Michael Hren
, (2024). Locally Produced Sedimentary Biomarkers in High-Altitude Catchments Outweigh Upstream River Transport in Sedimentary Archives
Research Type: Other Scholarly Work
StalFire Consortium: Defining the paleoclimate-fire relationship in California across temporal and spatial scales
Michael Hren,
, (2024). StalFire Consortium: Defining the paleoclimate-fire relationship in California across temporal and spatial scales, Copernicus Meetings
Research Type: Other Scholarly Work
Variations of fire events and vegetation in the western Sierra Nevada archived in speleothems during Dansgaard--Oeschger (D--O) cycles
Michael Hren,
, (2024). Variations of fire events and vegetation in the western Sierra Nevada archived in speleothems during Dansgaard--Oeschger (D--O) cycles, Copernicus Meetings
Research Type: Other Scholarly Work
A paleoenvironmental reappraisal of the Pennsylvanian (Bashkirian-Moscovian) South Bar and lower Sydney Mines Formations of Cape Breton, Atlantic Canada
Michael Hren,
, (2024). A paleoenvironmental reappraisal of the Pennsylvanian (Bashkirian-Moscovian) South Bar and lower Sydney Mines Formations of Cape Breton, Atlantic Canada, Geological Society of America Northeastern Section Annual Meeting
Research Type: Poster/Presentation
Michael Hren
, (2025). The sensitivity of reconstructed carbon dioxide concentrations to stomatal preparation methods using a leaf gas exchange model, Applications in Plant Sciences
Research Type: Journal Article
, (2025). Optimized method for sequential extraction and analysis of polycyclic aromatic hydrocarbons, anhydrosugars and lipid biomarkers in speleothem carbonate and drip waters, Organic Geochemistry, vol. 203, iss. Issue, Elsevier Ltd, 10.1016/j.orggeochem.2025.104961
Research Type: Journal Article
Evaluation of LSTM vs. conceptual models for hourly rainfall runoff simulations with varied training period lengths
, (2025). Evaluation of LSTM vs. conceptual models for hourly rainfall runoff simulations with varied training period lengths, vol. 15, iss. 1, pp. 15820, Scientific reports, 2045-2322
Research Type: Journal Article
Michael Hren,
, (2025). Spatiotemporal flood depth and velocity dynamics using a convolutional neural network within a sequential Deep-Learning framework, Environmental Modelling and Software, vol. 185, iss. Issue, Elsevier Ltd, 10.1016/j.envsoft.2024.106307
Research Type: Journal Article
Michael Hren
, (2025). Seasonal Variation in δ13Cn‐alkane and δ13C/ δ15N of Bulk Leaves of Four Riparian Plants: Implications for Biomarker Carbon Isotope Records of Past Environments, Journal of Geophysical Research: Biogeosciences
Research Type: Journal Article
Michael Hren
, (2025). Locally produced leaf wax biomarkers in the high-altitude Areguni Mountains outweigh downstream transport, Biogeosciences
Research Type: Journal Article
Michael Hren
, (2025). StalFire Consortium: Defining the paleoclimate-fire relationship in California across temporal and spatial scales
Research Type: Other Scholarly Work
Michael Hren
, (2025). Variations of fire events and vegetation in the western Sierra Nevada archived in speleothems during Dansgaard–Oeschger (D–O) cycles
Research Type: Other Scholarly Work
Michael Hren
, (2025). The late Smithian thermal maximum and the Smithian-Spathian event were the two primary drivers of Early Triassic floristic changes at high southern latitudes
Research Type: Other Scholarly Work
Michael Hren
, (2025). A novel method for improved estimates of absolute microfossil abundance: A big step towards a deep-time terrestrial productivity proxy
Research Type: Other Scholarly Work