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Found 1174 dataset(s) matching "isotopes".
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This dataset contains chemical and isotopic data from 39 produced water samples collected from sealed separators containing water from horizontal hydrocarbon wells in the lower Eagle Ford Group....
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Isotopic compositions (87Sr/86Sr, 143Nd/144Nd, 176Hf/177Hf, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) and major oxide and trace element concentrations of Quaternary basalts, hawaiites, mugearites,...
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These data are water column and sediment data largely collected in the Bering and Chukchi Seas, with some coverage for the Beaufort and East Siberian Seas, and with limited coverage for other...
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The data release includes zircon and titanite U-Pb-Thisotope and age data, monazite U-Pb-Th isotope, trace element and age data, carbon and sulfur stableisotope data, and graphite Raman...
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Chemosynthetic environments support distinct benthic communities capable of utilizing reduced chemical compounds for nutrition. Hundreds of methane seeps have been documented along the U.S....
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This U.S. Geological Survey (USGS) data release provides zircon U-Pb geochronology and whole rock isotope geochemistry for drill core samples from Montana, Nebraska, Nevada and Wyoming. The drill...
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U-Pb isotopic data from zircon measured using the SHRIMP-RG ion microprobe at Stanford University, CA. These data are used to calculate absolute ages of the samples from which the zircons were...
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This data release contains new, 40–70-year long subannual strontium-to-calcium ratio (Sr/Ca) records and linear extension measurements from five mid-to-late Holocene, Orbicella faveolata corals...
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Proposed invasive carp barriers may threaten populations of migratory fishes in the St. Croix National Scenic Riverway and the Mississippi National River and Recreation Area by preventing...
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This dataset includes tables of U- and Th-isotopic data used to calculate uranium-series age estimates (230Th/U method) and initial 234U/238U activity ratios for samples of tufa mounds formed by...
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Isotope data for vesicomyid clams collected in the Pacific Ocean off the Oregon coastline in 2019.
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This dataset provides all known and relevant isotopic source signatures (d15N) of NOx and NH3 sources through the fall of 2018. It includes relevant sources contributing to nitrogen deposition...
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This data set consists of chemical and stable isotope data obtained through the analysis of discrete water samples collected from 14 fixed sampling locations in the northern Sacramento-San Joaquin...
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Samples were collected from Clear Lake, California from 2019-2022 by the U.S. Geological Survey (USGS) California Water Science Center, the USGS Forest and Rangeland Ecosystem Science Center...
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Fish muscle tissue was analyzed for stable carbon and nitrogen isotope values (delta 13C and delta 15N) for two filter-feeding fishes native to China, silver carp (Hypophthalmichthys molitrix) and...
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This dataset contains U-Pb isotopic data and associated dates of zircon from sedimentary and metamorphic rocks collected from the western Upper Peninsula of Michigan and northern Wisconsin, United...
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This dataset contains water temperature, salinity, and oxygen concentration taken by CTD, as well as stable oxygen and hydrogen isotope observations inferred from laboratory analyses of seawater...
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Time-series of mercury, carbon, and nitrogen stable isotope ratios of Lake Michigan lake trout from the EPA Great Lakes Fish Monitoring and Surveillance Program.
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This dataset includes strontium isotopic data for water samples collected from groundwater springs in Death Valley, California in January, 2020.
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The late Pleistocene was a climatically dynamic period, with abrupt shifts between cool-wet and warm-dry conditions. Increased effective precipitation supported large pluvial lakes and long-lived...
