A5023929391- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Pleistocene-Era Hominins and Archaeology
- Evolution and Paleontology Studies
- Archaeology and ancient environmental studies
- Wildlife Ecology and Conservation
- Forensic Anthropology and Bioarchaeology Studies
- Primate Behavior and Ecology
- Groundwater and Isotope Geochemistry
- Marine animal studies overview
- Geological formations and processes
- Bat Biology and Ecology Studies
- Paleontology and Stratigraphy of Fossils
- Environmental DNA in Biodiversity Studies
- Identification and Quantification in Food
- Geochemistry and Geologic Mapping
- Nutritional Studies and Diet
- Geological and Geochemical Analysis
- Meat and Animal Product Quality
- Radioactive contamination and transfer
- Pacific and Southeast Asian Studies
- Diet and metabolism studies
- Groundwater flow and contamination studies
- Hydrocarbon exploration and reservoir analysis
- Aquatic Ecosystems and Biodiversity
University of Utah
2016-2025
IsoForensics
2009-2024
Hudson Institute
2019
John Wiley & Sons (United States)
2019
Utah Geological Survey
2018
Save the Elephants
2006-2016
National Academy of Sciences
2011
University of Washington
2003-2008
Texas A&M University
2006
The Ohio State University
2006
Carbon Stable Isotope Composition of Modern Calcareous Soil Profiles in California: Implications for CO2 Reconstructions from Paleosols
Research Article| April 01, 1989 Systematic variations in the carbon and oxygen isotopic composition of pedogenic carbonate along elevation transects southern Great Basin, United States JAY QUADE; QUADE 1Department Geology Geophysics, University Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar THURE E. CERLING; CERLING JOHN R. BOWMAN GSA Bulletin (1989) 101 (4): 464–475. https://doi.org/10.1130/0016-7606(1989)101<0464:SVITCA>2.3.CO;2 Article...
Research Article| January 01, 2002 Stable Isotope Compositions of Biological Apatite Matthew J. Kohn; Kohn Department Geological Sciences, University South Carolina, Columbia, Carolina 29208 Search for other works by this author on: GSW Google Scholar Thure E. Cerling Geology and Geophysics, Utah, Salt Lake City, Utah 84112 Author Article Information Publisher: Mineralogical Society America First Online: 03 Mar 2017 © The Of Reviews in Mineralogy Geochemistry (2002) 48 (1): 455–488....
A 400 record of atmospheric carbon dioxide levels has been estimated by applying a CO{sub 2} paleobarometer to database 758 analyses paleosol (fossil soil) carbonates. This is compilation new data and previously published values from the literature. Many Mesozoic paleosols are reported, an era poorly represented in Results indicate that large fluctuations have occurred over study interval, ranging current level up ten times level. Declining pCO{sub through middle Paleozoic culminate low...
Many important hominid-bearing fossil localities in East Africa are regions that extremely hot and dry. Although humans well adapted to such conditions, it has been inferred African environments were cooler or more wooded during the Pliocene Pleistocene when this region was a central stage of human evolution. Here we show Turkana Basin, Kenya—today one hottest places on Earth—has continually past 4 million years. The distribution 13 C- 18 O bonds paleosol carbonates indicates soil...
We use the oxygen isotopic composition of tooth enamel from multiple mammalian taxa across eastern Africa to present a proxy for aridity. Here we report delta(18)O values 14 species 18 locations and classify them according their sensitivity environmental The are placed into two groups, evaporation sensitive (ES) insensitive (EI). Tooth ES animals increase with aridity, whereas EI track local meteoric water values, demonstrating that bioapatite different behaviors physiologies record aspects...
We provide stable carbon isotope data from 37 species of African bovids to document dietary preferences for C3 browse (or fruits) or C4 grass. These a quantitative measure the fraction grass in bovid diets, can be applied on regional local scales, derived tooth enamel and hair other tissues, permit diets considered context grazer-browser continuum. recognize hypergrazers (>95% grass), grazers (70–95% mixed feeders (>30% >30% browse), browsers hyperbrowsers frugivores fruit). Our results...
Abstract Nitrogen isotope analysis is a common technique for investigating dietary behaviour in modern and archaeological populations. One of its primary uses to provide trophic level information. This application possible because ∼3‰ enrichment 15 N along each step the food chain, resulting carnivores having higher δ values than herbivores, which turn have plants. Much variation has also been observed within level, although reasons this are poorly understood. Here we present results...
We develop and test a model to predict the geographic region-of-origin of humans based on stable isotope composition their scalp hair. This incorporates exchangeable nonexchangeable hydrogen oxygen atoms in amino acids δ 2 H 18 O values hair (primarily keratin). evaluated predictions with analyses human from 65 cities across United States. The model, which predicts isotopic as function drinking water, bulk diet, dietary protein ratios, explains >85% observed variation reproduces slopes...
The East African hominin Paranthropus boisei was characterized by a suite of craniodental features that have been widely interpreted as adaptations to diet consisted hard objects required powerful peak masticatory loads. These morphological represent the culmination an evolutionary trend began in earlier taxa such Australopithecus afarensis , and presumably facilitated utilization open habitats Plio-Pleistocene. Here, we use stable isotopes show P. had dominated C 4 biomass grasses or...