A5084058187- Geology and Paleoclimatology Research
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Hydrocarbon exploration and reservoir analysis
- Radioactive element chemistry and processing
- Archaeology and ancient environmental studies
- Geological and Geophysical Studies
- Groundwater flow and contamination studies
- Geological and Tectonic Studies in Latin America
- Pleistocene-Era Hominins and Archaeology
- Clay minerals and soil interactions
- Geological and Geophysical Studies Worldwide
- earthquake and tectonic studies
- Geomagnetism and Paleomagnetism Studies
- Evolution and Paleontology Studies
- Forensic Anthropology and Bioarchaeology Studies
- Marine and coastal ecosystems
- Primate Behavior and Ecology
- Heavy metals in environment
Rutgers, The State University of New Jersey
2016-2025
Planetary Science Institute
2015-2024
Juniata College
2023
Rutgers Sexual and Reproductive Health and Rights
2018-2022
Cornell University
1996-2013
University of Cambridge
1994-2002
United States Geological Survey
1997
University of Michigan
1997
As hydrogenous iron-manganese crusts grow, at rates of millimeters per million years, they record changes in the lead isotopic composition ambient seawater. Time-resolved data for cut slabs two central Pacific that have been growing since about 50 years ago were measured situ by laser ablation, multiple-collector, inductively coupled plasma mass spectrometry. The compositions remained remarkably uniform over past 30 but small variations corresponds with other paleoceanographic indicators...
On the mid‐Atlantic Coastal Plain of United States, Paleocene sands and silts are replaced during Paleocene‐Eocene Thermal Maximum (PETM) by kaolinite‐rich Marlboro Clay. The clay preserves abundant magnetite produced magnetotactic bacteria novel, presumptively eukaryotic, iron‐biomineralizing microorganisms. Using ferromagnetic resonance spectroscopy electron microscopy, we map magnetofossil distribution in context stratigraphy carbon isotope data identify three magnetic facies clay: one...
Prior to the 24-26 March 2015 extreme precipitation event that impacted northern Chile, scenarios for Pleistocene and Holocene wetter paleoclimate intervals in hyperarid core of Atacama Desert had been attributed eastern or southwestern moisture sources. The offered first modern opportunity evaluate a major regional relative those hypothetical scenarios. It was determine 18O 2H composition might eventually be preserved geological materials. driver synoptic-scale weather system, cutoff cold...
Research Article| July 01, 2015 Magnetostratigraphy, biostratigraphy, and chemostratigraphy of the Pignola-Abriola section: New constraints for Norian-Rhaetian boundary Matteo Maron; Maron † 1Department Geosciences, University Padova, via G. Gradenigo 6, 35131 Italy †E-mail: matteo.maron.1@studenti.unipd.it. Search other works by this author on: GSW Google Scholar Manuel Rigo; Rigo Angela Bertinelli; Bertinelli 2Department Physics Geology, Perugia, Pascoli, 06123 Miriam E. Katz; Katz...
The base of the Rhaetian stage (Norian/Rhaetian boundary, NRB) is still awaiting formal designation by International Commission on Stratigraphy. At present, only 4.30-m-thick Steinbergkogel section (Austria) has been proposed as GSSP (Global Stratotype Section and Point) candidate for Rhaetian. Here we present data from 63-m-thick Pignola-Abriola (Southern Apennines, Italy) that consider an alternative GSSP. basinal section, represented hemipelagic–pelagic carbonate successions belonging to...
Abstract Copper (Cu) is a cofactor in numerous key proteins and, thus, an essential element for life. In biological systems, Cu isotope abundances shift with metabolic and homeostatic state. However, the mechanisms underpinning these isotopic shifts remain poorly understood, hampering use of isotopes as biomarkers. Computational predictions suggest that fractionation occurs when bind Cu, magnitude this effect dependent on identity arrangement coordinating amino acids. This study sought to...
The recent increase in demand for lithium has lead to the development of new brine prospects, particularly central Andes.The brines are hosted closed basin aquifers two types: mature, halite dominant, and immature, clastic dominant.The estimation elemental resources these salars depends on a detailed knowledge aquifer geometry, porosity grade.The geometry can be evaluated by classical geophysical drilling techniques, but since resource is fluid, with attendant problems in-aquifer mixing...
Research Article| June 01, 2013 Stability of the nitrogen cycle during development sulfidic water in redox-stratified late Paleoproterozoic Ocean Linda V. Godfrey; Godfrey * 1Institute Marine and Coastal Sciences, Rutgers University, New Brunswick, Jersey 08901, USA *E-mail: godfrey@marine.rutgers.edu. Search for other works by this author on: GSW Google Scholar Simon W. Poulton; Poulton 2School Earth Environment, University Leeds, Leeds LS2 9JT, UK Gray E. Bebout; Bebout 3Department...
The lithium isotope system can be an important tracer for various geological processes, especially tracing continental weathering. key to this application is the accurate and precise determination of isotopic composition. However, some previously established column separation methods are not well behaved when applied chemically diverse materials, due significant variations in matrix/lithium ratios materials. Here, we report a new dual‐column purification achieve analysis compositions using...
Published Sn isotope data along with 150 new analyses of cassiterite and four granite constrain two major tin fractionation steps associated (1) separation from the magma/orthomagmatic transitional environment (2) hydrothermal activity. A distinct difference across deposit type, geological host rocks, time ore formation demonstrates that in mean δ124Sn value represents operation a unified process. The lower values present both residual igneous rocks pegmatite suggest heavier isotopes were...
Dissolved Zr and Hf distributions have been determined for five stations located across the shelf break in northeastern Atlantic Ocean on Celtic Approaches. For deep water, range concentrations has found to be 70–180 pmol/kg, hafnium 0.4–1.1 pmol/kg. The with depth are indicative of a nutrient-like scavenging-regeneration behavior seawater, although dissimilarity silicate nitrate samples below nutricline suggest that other mechanisms also important defining oceanic distribution these...