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Showing 1 to 20 of 20 for “"strontium isotopes"”.
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Investigation of Middle Woodland population movement in the midwestern United States using strontium isotopes
… and one Ohio site (the Hopewell Mound Group) to strontium isotopic analysis in order to detect potential immigrants to the site, along with 38 faunal specimens to provide a baseline for comparison. Building on Bolnick and Smith’s (2007) mtDNA research, it was hypothesized that the Illinois sites …
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Fluid relationships in the Northern Gulf of Mexico using dissolved ion concentrations and strontium isotopes
… metal and halogen fluid concentrations and strontium isotope ratios from ten sites on the Gulf of Mexico (GoM) continental slope were compared to identify the variations in chemistry. Geochemical discrepancies are interpreted as coming from chloride sources, fluid mixing and fluid diagenesis …
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The record of carbon, oxygen, sulfur, and strontium isotopes and trace elements in late Paleozoic brachiopods
Embargo set by: Seth Robbins for item 104109 Lift date: 2019-11-30T21:03:43Z Reason: Electronic Theses and Dissertation
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Using Strontium Isotopes in Conjunction with Major, and Trace Elements to Identify Water/Rock Interaction in the Upper Kittitas County, Washington
The complex bedrock lithologies in the Upper Kittitas County provide an ideal setting for developing isotopic methodology to identify groundwater sources and track flow paths through water-rock interaction. A wide range of 87Sr/86Sr (0.7040 to 0.7068) in surface waters, springs, and groundwater …
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Documenting the Origin of Compositional Diversity of Subduction Zone Magmatism, Alicudi, Aeolian Arc (Southern Tyrrhenian Sea, Italy) Using in situ Plagioclase Data
… include whole rock major and trace elements and strontium/neodymium isotopes, and plagioclase textural types, major and trace elements, and strontium isotopes; numerical modeling was also conducted. Integration of these data suggests that recharge, assimilation, storage at different levels below …
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Paleoenvironmental Reconstruction of the Late Cretaceous Eastern Gulf Coastal Plain in Georgia and Alabama
… analysis. The study also explored the use of strontium isotopes for the determination of paleosalinity, as well as for geological age determination. Results suggest that further examination of strontium isotope analysis would be valuable.</p>
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Using high resolution Sr isotope data from the Nama Group, South Africa, to constrain global stratigraphic relationships and continental weathering rates in the terminal Ediacaran
… seawater chemistry and can be tracked using the strontium isotope ratio of seawater, which can be faithfully captured by carbonate minerals. However, analysis of strontium isotopes in ancient carbonates can be complicated by diagenetic alteration. To ensure that the 87Sr/86Sr ratios generated in …
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Spatial and temporal dynamics of biogeochemical processes in the Fraser River, Canada : a coupled organic-inorganic perspective
… and biogeochemical transformation. Radiogenic strontium isotopes are employed as a tracer of sediment provenance based on the wide variation in bedrock age and lithology in the Fraser basin. The influence of sediments derived from the headwaters is detectable at the river mouth, however more …
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Spatial and temporal dynamics of biogeochemical processes in the Fraser River, Canada : a coupled organic-inorganic perspective
… and biogeochemical transformation. Radiogenic strontium isotopes are employed as a tracer of sediment provenance based on the wide variation in bedrock age and lithology in the Fraser basin. The influence of sediments derived from the headwaters is detectable at the river mouth, however more …
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Geochemical and Isotopic Characterization of Coal Combustion Residuals: Implications for Potential Environmental Impacts
… power plants, and 4) examination of boron and strontium isotopes of CCRs from leaching experiments and their application as tracers in the environment of the TVA spill and NC waterways. These investigations have illuminated several conclusions, including contact of surface water with CCRs leach …
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An Investigation of the Geochemistry and Hydrogeology of the Queen Charlotte Fault
… communities at the seafloor. Analyses of water isotopes and chloride concentrations suggest that certain locations in proximity to the QCF may be influenced by meteoric water, or some currently unknown isotopic depletion process. Strontium isotopes reveal a non-radiogenic strontium signature at …
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Geochemistry of the Northern Izu-Bonin arc: implications for crustal recycling and mantle processes
… LILEs,<br/>depleted HFSEs and fluid-modified strontium isotopes. However, a systematic variation in<br/>isotope and trace element ratios is recognised across the Izu-Bonin arc. Radiogenic 87Sr/86Sr<br/>and 143Nd/144Nd, low Nb/Y and high Ba/La in the volcanic front suggests melting of a …
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Strontium isotope tracing of prehistoric human mobility in France
… as we go back in time. The application of stable isotopes in archaeological research has revolutionised palaeomobility studies by providing independent data, which can be used to evaluate models of migration, trade, and cultural change. This research project explores the use of strontium isotope …
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Strontium isotope tracing of prehistoric human mobility in France
… as we go back in time. The application of stable isotopes in archaeological research has revolutionised palaeomobility studies by providing independent data, which can be used to evaluate models of migration, trade, and cultural change. This research project explores the use of strontium isotope …
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The hydrochemical and isotopic characterization of groundwater in southern Mozambique
… two labs at Stellenbosch University, and stable isotopes of oxygen and hydrogen, and radiogenic isotopes of strontium were analyzed at the Department of Geological Sciences at the University of Cape Town. The aim of this study was to characterize the isotopic and hydrochemical composition of …
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Testing formation of the Torres del Paine Intrusive Complex, Southern Chile via in situ strontium isotope analyses: Insights into granite formation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Novel disturbance regimes in the Arctic: paleoecological perspectives on fire and thermo-erosion from Alaskan tundra
… X-ray fluorescence, X-ray diffraction, and strontium isotopes to identify past episodes of watershed thermo-erosion and examine the drivers of these events over the past 6000 years. This record of thermo-erosion from the Alaskan North Slope provided one of the first reconstructions of …
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Geochemical Investigations of Mineral Weathering: Quantifying Weathering Intensity, Silicate versus Carbonate Contributions, and Soil-Plant Interactions
This study is the geochemical examination of mineral weathering and its path from hinterland, through sediment deposition and pedogenesis, to its dissolution and eventual uptake into plants or precipitation as carbonate minerals. The three papers examine the rate and character of carbonate and …