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Strontium Isotope Zoning in Garnet: Implications for Metamorphic Matrix Equilibration, Geochronology and Phase Equilibrium Modelling (with J. Sousa, Mark D. Schmitz, Clyde J. Northrup, and F. S. Spear), Journal of Metamorphic Geology (2013)
In principle, garnet growth rates may be calculated from 87Rb/86Sr and 87Sr/86Sr measurements in garnet...
Trace Element Concentrations in Teeth – A Modern Idaho Baseline with Implications for Archeometry, Forensics, and Palaeontology (with Jennifer Morris and Paul H. Olin), Journal of Archaeological Science (2013)
Concentrations of 69 minor and trace elements were measured in situ using laser ablation inductively-coupled...
A New Chronology for Middle Eocene-Early Miocene South American Land Mammal Ages (with Regan E. Dunn, Richard H. Madden, Mark D. Schmitz, Caroline A.E. Strömberg, Alfredo A. Carlini, Guillermo H. Ré, and James Crowley), Geological Society of America Bulletin (2013)
Cenozoic South American Land Mammal Ages (SALMAs) have historically been correlated to the geologic...
Trace Element Diffusivities in Bone Rule Out Simple Diffusive Uptake During Fossilization but Explain in vivo Uptake and Release (with Randolph J. Moses), PNAS (2013)
Diffusion rates of numerous trace elements in bone at 20 °C were determined using laser-ablation...
Flattening the Bhutan Himalaya (with Stacey L. Corrie, Nadine McQuarrie, and Sean P. Long), Earth and Planetary Science Letters (2012)
A detailed thermobarometric transect of 35 samples across the Greater and Tethyan Himalayan sequences in...
Paleoecology of Late Pleistocene-Holocene Faunas of Eastern and Central Wyoming, USA, with Implications for LGM Climate Models (with Moriah P. McKay), Palaeogeography, Palaeoclimatology, Palaeoecology (2012)
Oxygen and carbon isotope compositions of teeth were measured for a variety of fossil herbivores,...
Titanium in Muscovite, Biotite, and Hornblende: Modeling, Thermometry, and Rutile Activities of Metapelites and Amphibolites (with Jennifer A. Chambers), American Mineralogist (2012)
Reactions involving the VITiIVAl-VIAlIVSi exchange in muscovite, biotite, and hornblende were calibrated thermodynamically using a...
The Age and Rate of Displacement Along the Main Central Thrust in the Western Bhutan Himalaya (with Tobgay Tobgay, Nadine McQuarrie, Sean Long, and Stacey L. Corrie), Earth and Planetary Science Letters (2012)
In western Bhutan, the Main Central Thrust (MCT) is broadly folded, creating multiple exposures of...
Isotopic Evaluation of Ocean Circulation in the Late Cretaceous North American Seaway (with Alan B. Coulson and Reese E. Barrick), Nature Geoscience (2011)
During the mid- and Late Cretaceous period, North America was split by the north–south oriented...
Preserved Zr-Temperatures and U–Pb Ages in High-Grade Metamorphic Titanite: Evidence for a Static Hot Channel in the Himalayan Orogen (with Stacey L. Corrie), Earth and Planetary Science Letters (2011)
Titanite grains from ~ 800 °C gneisses of the c. 6-km thick Greater Himalayan...
Metamorphic History of the Central Himalaya, Annapurna Region, Nepal, and Implications for Tectonic Models (with Stacey Corrie), Geological Society of America Bulletin (2011)
Pressure-temperature-time (P-T-t) conditions of metamorphism have been determined in the Annapurna region of central Nepal...
Stable Isotopes of Fossil Teeth Corroborate Key General Circulation Model Predictions for the Last Glacial Maximum in North America (with Moriah McKay), Geophysical Research Letters (2010)
Oxygen isotope data provide a key test of general circulation models (GCMs) for the Last...
Carbon Isotope Compositions of Terrestrial C3 Plants as Indicators of (Paleo)Ecology and (Paleo)Climate, Proceedings of the National Academy of Sciences of the United States of America (2010)
A broad compilation of modern carbon isotope compositions in all C3 plant types shows a...
The Malari Leucogranite, Garhwal Himalaya, Northern India: Chemistry, Age, and Tectonic Implications (with Himanshu K. Sachan, Anubhooti Saxena, and Stacey L. Corrie), Geological Society of America Bulletin (2010)
In the Garhwal region, India, the Malari leucogranite cuts the South Tibetan detachment system, a...
The Effect of Tissue Structure and Soil Chemistry on Trace Element Uptake in Fossils (with Emily A. Hinz), Geochimica et Cosmochimica Acta (2010)
Trace element profiles for common divalent cations (Sr, Zn, Ba), rare-earth elements (REE), Y, U,...
Late Pleistocene Environmental Change Interpreted from δ13C and δ18O of Tooth Enamel from the Black Creek Swamp Megafauna Site, Kangaroo Island, South Australia (with M. S. Forbes, E. A. Bestland, and R. T. Wells), Palaeogeography, Palaeoclimatology, Palaeoecology (2010)
Stable carbon and oxygen isotope ratios of tooth enamel carbonate were collected from both fossils...
The Lower Lesser Himalayan Sequence: A Paleoproterozoic Arc on the Northern Margin of the Indian Plate (with Sudip K. Paul and Stacey L. Corrie), Geological Society of America Bulletin (2010)
The lower Lesser Himalayan sequence marks the northern extremity of the exposed Indian plate, and...
Young Eclogite from the Greater Himalayan Sequence, Arun Valley, Eastern Nepal: P–T–t Path and Tectonic Implications (with Stacey L. Corrie and J. D. Vervoort), Earth and Planetary Science Letters (2010)
Garnet geochronology was used to provide the first direct measurement of the timing of eclogitization...
Stable Isotopes of Fossil Teeth and Bones at Gran Barranca as a Monitor of Climate Change and Tectonics, The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia (2010)
Fossiliferous sediments at Gran Barranca span a remarkable range of ages from the middle Eocene...
Stable Isotopes of Fossil Teeth and Bones at Gran Barranca as Monitors of Climate Change and Tectonics (with Alessandro Zanazzi and J. A. Josef), The Paleontology of Gran Barranca: Evolution and Environmental Change Through the Middle Cenozoic of Patagonia (2010)
Biostratigraphy and Paleoclimatology of the Eocene-Oligocene Boundary Section at Toadstool Park, Northwestern Nebraska, USA (with Alessandro Zanazzi and Dennis O. Terry Jr.), Geological Society of America Special Papers (2009)
The stratigraphic section located at Toadstool Park, northwestern Nebraska, preserves a detailed sedimentological and...
Models of Garnet Differential Geochronology, Geochimica et Cosmochimica Acta (2009)
Rayleigh distillation models are developed to describe theoretical growth zoning of Lu, Hf, Rb, Sr,...
Taking Mylonites' Temperatures (with Clyde J. Northrup), Geology (2009)
We measured titanium-in-quartz (TitaniQ) temperatures by ion microprobe for three deformed rocks having different...
Miocene Tectonics and Climate Forcing of Biodiversity, Western United States (with Theodore J. Fremd), Geology (2008)
Ungulate and carnivore diversity patterns since 30 Ma in different regions of the western United...
Models of Diffusion-Limited Uptake of Trace Elements in Fossils and Rates of Fossilization, Geochimica et Cosmochimica Acta (2008)
Many fossils are assumed to take up trace elements by a process of combined diffusion...
Phosphate–Oxygen Isotopes from Marine Turtle Bones: Ecologic and Paleoclimatic Applications (with Alan B. Coulson, Matthew H. Shirley, Walter G. Joyce, and Reese E. Barrick), Palaeogeography, Palaeoclimatology, Palaeoecology (2008)
While certain freshwater turtle taxa possess a strong correlation between the δ18Ophosphate value of their...
Trace-Element Distributions in Silicates during Prograde Metamorphic Reactions: Implications for Monazite Formation (with Stacey Lynn Corrie), Journal of Metamorphic Geology (2008)
To assess the petrogenetic relationship between monazite and major silicates during prograde metamorphism, REE were...
U-Th-Pb Dating of Monazite by Single-Collector ICP-MS: Pitfalls and Potential (with Jeffery D. Vervoort), Geochemistry Geophysics Geosystems (2008)
Methods are presented for in situ determination of Pb/U, Pb/Th, and Pb/Pb ages in monazite...
P-T-t Data from Central Nepal Support Critical Taper and Repudiate Large-Scale Channel Flow of the Greater Himalayan Sequence, Geological Society of America Bulletin (2008)
A new synthesis of pressure-temperature conditions and pressure-temperature-time (P-T-t) paths is presented for high-grade...
Ecology and Physiology of White River Mammals Based on Stable Isotope Ratios of Teeth (with Alessandro Zanazzi), Palaeogeography, Palaeoclimatology, Palaeoecology (2008)
To characterize the ecology and physiology of common late Eocene–early Oligocene White River mammals, we...
Tectonic Controls on Isotope Compositions and Species Diversification, John Day Basin, Central Oregon (with Theodore J. Fremd), PaleoBios (2007)
Oxygen isotope compositions of fossil mammal teeth from basins in interior Oregon, including the John...