Filters: Tags: isotopic analysis (X) > partyWithName: U.S. Geological Survey (X)

Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Citation (3) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts U.S. Geological Survey - ScienceBase Aaron Pietruszka Geology, Geophysics, and Geochemistry Science Center Energy and Minerals Craig A Johnson More... Categories Data (10) Collection (1) Tag Types Theme (10) Other (1) Place (10) USGS Scientific Topic Keyword (5) Harvest Set (8) Tag Schemes None (4) USGS Thesaurus (8) Geographic Names Information System (3) Getty Thesaurus of Geographic Names (2) USGS Thesaurus, ISO 19115 Topic Categories (1) ISO 19115 Topic Category (3) USGS Biocomplexity Thesaurus (1) More... View Results as: JSON ATOM CSV

Strontium isotope ratios of lavas from Kīlauea, Mauna Loa, and Lōʻihi Volcanoes, Hawaiʻi Strontium isotope ratios of lavas from Hawaiʻi were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were at total of 427 analyses of samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), the University of Hawaiʻi, and the Smithsonian Institution. The samples originated from Kīlauea (historical and prehistoric summit and rift zone lavas), Mauna Loa (historical lavas), and Lōʻihi (submarine lavas of unknown age). Data for associated reference materials are described in the process steps. The Sr isotope ratios may be used to test models for the magmatic plumbing system... Categories: Data; Tags: GGGSC, Geology, Geophysics and Geochemistry Science Center, HVO, Hawaii, Hawaiian Volcano Observatory, All tags... Kīlauea, Lōʻihi, MRP, Mauna Loa, Mineral Resources Program, Smithsonian Institution, Southwest Isotope Research Laboratory, TIMS, Thermal Ionization Mass Spectrometry, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), University of Hawai’i, Volcanology, geochemistry, geoscientificInformation, isotopic analysis, strontium, volcanic activity, Fewer tags Fish Species Composition and Diet Information in Lakes of the Arctic Coastal Plain, Alaska, 2011-2013 This dataset provides information on fish species composition and their diet information for 16 lakes and 16 ponds at two locations on the central Arctic Coastal Plain, Alaska. In one table, we provide the presence of fish species and the total species count for each lake or pond sampled. This table also includes metrics of surface water connectivity to the stream network. In a second table, stomach content information is provided for fish collected during summer sampling periods (late June to mid-August) over three years (2011–2013). The third table includes stable carbon isotope and stable nitrogen isotope signature data for fish species and snails (the baseline organism) from 16 water bodies at one study location... Categories: Data; Tags: Alaska, Arctic, Arctic Coastal Plain, Diet, Isotopes, All tags... North Slope Borough, Species composition, Species richness, Stomach contents, biota, inlandWaters, isotopic analysis, prey, Fewer tags Common lead isotopic measurements in silicate glasses and minerals by laser ablation double-focusing SC-ICPMS (2017) This dataset is related to a 2017 journal article by A. J. Pietruszka and L. A. Neymark titled "Evaluation of laser ablation double-focusing SC-ICPMS for “common” lead isotopic measurements in silicate glasses and minerals" that is published in the Journal of Analytical Atomic Spectrometry (doi:10.1039/c7ja00005g). Categories: Data; Types: Citation; Tags: BCR-2G, BHVO-2G, Colorado, Earth sciences, Geochemistry, All tags... Isotopic analysis, Lakewood, Laser ablation, Lead, MPI-DING, Mass spectrometry, Mercury, NIST, National Institute of Standards and Technology, SC-ICPMS, SRM, SRM610, SRM612, SRM981, Single collector inductively coupled plasma mass spectrometry, Standard reference material, Thallium, USGS Science Data Catalog (SDC), Fewer tags Nitrogen cycling rates from sagebrush and cheatgrass-invaded soils in the Northern Great Basin (2008) This dataset contains data supporting the paper: DeCrappeo, N.M., DeLorenze, E.J., Giguere, A.T., Pyke, D.A., and Bottomley, P.J. Fungal and bacterial contributions to nitrogen cycling in cheatgrass-invaded and uninvaded native sagebrush soils of the western USA (accepted at the journal Plant and Soil). The purpose of the study was to evaluate the relative contributions of soil bacteria and fungi to inorganic nitrogen (N) cycling in sagebrush and cheatgrass-invaded soils using a 15N isotope dilution experiment. Soils were collected from sagebrush and cheatgrass rhizospheres at six paired sites in southwest Idaho and southeast Oregon. In order to partition the contribution of each microbial group to N cycling, soils... Categories: Data; Types: Citation; Tags: Ecology, Great Basin, Idaho, Land Use Change, Oregon, All tags... Soil Sciences, USGS Science Data Catalog (SDC), biogeochemical cycling, biota, ecological processes, geoscientificInformation, invasive species, isotopic analysis, shrubland ecosystems, soil sciences, Fewer tags U-series isotope data used to date a 130,000-year-old archaeological site in southern California, U.S.A. This dataset includes tables with physical information and isotopic data that are used to calculate uranium-series ages (230Th/U method) and initial 234U/238U activity ratios on a suite of mastodon bones from the Cerutti Mastodon site near San Diego, CA area. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Paradise Hills, San Diego, San Diego County, USGS Science Data Catalog (SDC), All tags... archaeology, fossils, geochronology, isotopic analysis, radiometric dating, Fewer tags Isotope and chemical data for: Sulfur isotopes of host strata for Howards Pass (Yukon-Northwest Territories) Zn-Pb deposits implicate anaerobic oxidation of methane not basin stagnation These data consist of sulfur and carbon isotope compositions, concentrations of selected elements, and concentrations of pyrite sulfur and organic carbon in mudstone samples collected from five cores drilled in the Howards Pass district, Yukon-Northwest Territories, Canada. The cores were drilled between 2006 and 2014, site visits and core sampling took place between 2009 and 2016, and laboratory work was conducted between 2011 and 2017. The data were obtained as part of a research project described in the following publication: Johnson, Craig A., Slack John F., Dumoulin, Julie A., Kelley, Karen D., and Falck, Hendrick, 2018, Sulfur isotopes of host strata for Howards Pass (Yukon-Northwest Territories) Zn-Pb deposits... Categories: Data; Tags: Canada, Geochemistry, Mineralogy, Northwest Territories, USGS Science Data Catalog (SDC), All tags... Yukon, carbon isotope analysis, economic geology, isotopic analysis, metallic mineral resources, mineral deposits, sulfur, Fewer tags St. Petersburg Coastal and Marine Science Center's Geologic Core and Sample Database This database contains a comprehensive inventory of geologic (coral, coral reef, limestone, and sediment) cores and samples collected, analyzed, published, and/or archived by, or in collaboration with, the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC). The SPCMSC Geologic Core and Sample Database includes geologic cores and samples collected beginning in the 1970s to present day, from study sites across the world. This database can be accessed through the CoreViewer 3.0 ArcOnline web mapping application, linked below. A copy of the data can also be downloaded from the web mapping application and the metadata is accessible through a link in the header of the application, as... Categories: Collection, Data; Tags: Alabama, Atlantic Ocean, Bahamas, Belize, Biological Collection, All tags... CTD measurement, Caribbean Sea, China, Florida, Geological Collection, Georgia, Gulf of Mexico, Honduras, Louisiana, Marshall Islands, Maryland, Mexico, Mississippi, Navassa Island, New Jersey, New Mexico, New York, Pacific Ocean, Phillippines, Puerto Rico, Texas, U.S. Virgin Islands, United States, Virginia, Washington, age estimation methods, atomic emission spectroscopy, augering, biota, box coring, bulk density, carbon isotope analysis, carbon-14 analysis, chemical analysis, contamination and pollution, coral, core analysis, cores, drilling and coring, environmentfaunal and floral census (microscopic), field sampling, geolocation measurement, geology, geoscientificInformation, grab sampling, grain-size analysis, information technology methods, isotopic analysis, laboratory method, luminescence dating, magnetic susceptibility, marine geology, mass spectroscopy, ndc_collection, oceans, paleomagnetic analysis, permeability, photography, piston coring, porosity, protists, push coring, radiometric dating, rock, rotary drilling, salinity, sample repositories, samples, sea surface temperature, sediment, slight stable isotope analysis, soil sciences, stratigraphy, subsampling, tomography, vibracoring, water chemistry, water quality, x-ray diffraction, x-ray fluorescence, Fewer tags Data release for Isotopic constraints on middle Pleistocene cave evolution, paleohydrologic flow, and environmental conditions from Fitton Cave speleothems, Buffalo National River, Arkansas (KIG'17) This dataset accompanies publication 'Isotopic constraints on middle Pleistocene cave evolution, paleohydrologic flow, and environmental conditions from Fitton Cave speleothems, Buffalo National River, Arkansas', published as a contribution to USGS Scientific Investigations Report 2017-5023 associated with the 2017 USGS Karst Interest Group meeting in San Antonio, TX. Categories: Data; Tags: Arkansas, Buffalo National River, Newton County, USGS Science Data Catalog (SDC), geochronology, All tags... isotopic analysis, karst, radiometric dating, speleology, Fewer tags Mercury stable isotopes in biota, sediment, groundwater, and waste piles, Clear Lake area, Lake County, California, 2019-2022 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 (FRESC), the US Environmental Protection Agency, and EA Engineering Science and Technology Inc. to assess the extent and cycling of legacy mercury (Hg) contamination from Sulphur Bank Mine. Samples of waste rock, sediments, groundwater, and biological tissue (zooplankton, bluegill, smallmouth bass, Mississippi silversides, and largemouth bass) were analyzed for Hg stable isotopes by the U.S. Geological Survey Mercury Research Laboratory. Mercury concentrations for sediments, waste rocks, and groundwaters are included within... Categories: Data; Tags: California, Clear Lake, California, Environmental Health, Lake County, California, USGS Science Data Catalog (SDC), All tags... fish, groundwater, isotopic analysis, mercury contamination, mine waste, sediment, Fewer tags Strontium isotope ratios of lavas from Kīlauea Volcano, Hawaiʻi Strontium isotope ratios of historical Kīlauea summit and rift lavas were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were 151 analyses of 49 samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), and the Smithsonian Institution. Data for associated reference materials are described in the process steps . The Sr isotope ratios may be used to test models for the volcano’s magmatic plumbing system. Categories: Data; Tags: Geochemistry, Hawaii, Kīlauea, USGS Science Data Catalog (SDC), Volcanology, All tags... geochemistry, geoscientificInformation, isotopic analysis, strontium, volcanic activity, Fewer tags