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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Jean M. Morrison U.S. Geological Survey - ScienceBase Chris S. Holm-Denoma Michaela R. Johnson Sarah Bala More... Categories Data (7) Tag Types Theme (8) Place (8) Harvest Set (1) USGS Scientific Topic Keyword (1) Tag Schemes USGS Thesaurus (8) ISO 19115 Topic Category (8) Author Generated Terms (1) Common geographic areas (7) Geographic Names Information System (GNIS) (7) None (7) National and Global Assessment of Oil and Gas (NAGA) (1) More... View Results as: JSON ATOM CSV

Contract laboratory results Samples were submitted for contract laboratory analysis as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI) in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These Contract Lab results are part of the data release including grain-size distribution, photographic and associated chemical and mineral analysis data for 36 sediment core and alluvium samples as well as Scanning Electron Microscopy analysis on select grains from magnetic and heavy mineral separates collected... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags LAS digital data files for the U.S.Geological Survey Alcova AR-1-13 core hole, Natrona County, Wyoming In 2013 the U.S. Geological Survey (USGS) drilled and logged a continuous core located on the northeast flank of the Alcova anticline in the southeastern part of the Wind River Basin, Wyoming to evaluate the source rock potential of the Lower and lowermost Upper Cretaceous marine shales (fig. 1). The well, named the Alcova Reservoir AR–1–13, was spud in the lower part of the Frontier Formation and ended in the upper part of the Cloverly Formation, and recovered core between 40.5 feet (ft) and 623 ft (figs. 1, 2). After coring was completed the USGS recorded geophysical data from the well bore, with digital data collected to a depth of 622 ft. Data include natural gamma, resistivity, conductivity, density, sonic,... Tags: Alcova Reservoir AR–1–13, Alcova anticline, Cloverly Formation, Energy Resources, Frontier Formation, All tags... LAS, Log ASCII Standard Format, USGS Science Data Catalog (SDC), Wind River Basin, caliper, conductivity, density, gamma, geoscientificInformation, natural gas resources, oil resources, petroleum reservoirs, petroleum resources, resistivity, rocks and deposits, sedimentary rocks, sonic, Fewer tags XRD: Qualitative mineralogy of Bulk (less than 2 mm) and heavy mineral separates Splits of samples were prepared of heavy mineral separates and bulk separates less than 2mm for analysis using X-ray diffraction (XRD) and results were interpreted to identify mineral components as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI), in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These XRD results are part of a data release including grain size distribution, photographic, and associated chemical and mineral analysis data for 36 sediment core and alluvium... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags pXRF: Heavy and light mineral separates Heavy and light mineral separates were extracted from the 36 collected field samples following a USGS procedure (Strong and Driscoll, 2016) and analyzed using the handheld portable X-ray fluorescence (pXRF) analyzer as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI), in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These pXRF results are part of a data release including grain size distribution, photographic and associated chemical and mineral analysis data for 36... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags Grain size analysis Grain size analysis using an Advantech Sonic Sifter Separator was conducted as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI) in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). Following field collection the samples were sieved into the greater than and less than 2 millimeter size fractions. The less than 2 millimeter fraction was sifted into seven grain size ranges. Each size fraction was weighed to 0.1 grams and photo documented. The cooperator for this study is... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags Scanning electron microscopy (SEM) and Energy dispersive spectroscopy (EDS) Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to analyze acid residues from heavy mineral separates, polished grain mounts, and clays from sampled sediments as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI) in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). Results from EDS and SEM are presented as PDF reports and TIFF images. These data are part of a data release including grain size distribution, photographic and associated... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags XRD: Clay mineralogy Splits of the less than 38 micron size fraction were processed to make oriented clay mounts and analyzed using X-ray diffraction (XRD) as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium, Cr(VI) in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). These clay mineralogy XRD results are part of a data release including grain size distribution, photographic, and associated chemical and mineral analysis data for 36 sediment core and alluvium samples as well as select grains from... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags pXRF: Bulk (less than 2 mm) and size fractions Samples were analyzed using the handheld portable X-ray fluorescence (pXRF) analyzer as part of a study examining the occurrence chromium and of natural and anthropogenic hexavalent Chromium, Cr(VI) in groundwater. Data will be used to estimate naturally-occurring background Cr(VI) concentrations upgradient, near the plume margins, and downgradient from a mapped Cr(VI) contamination plume near Hinkley, CA (Izbicki and Groover, 2016). Relative concentrations for 18 elements of interest were measured on the less than 2mm and sized- fraction splits of the 36 field samples. Greater than 20 percent of the samples analyzed using pXRF also have Contract Laboratory results for comparison. These pXRF results are part of... Categories: Data; Tags: California, Hinkley, atomic emission spectroscopy, background level, chemical analysis, All tags... chromium, contamination and pollution, geochemistry, geoscientificInformation, groundwater, health, mass spectroscopy, rocks and deposits, scanning electron microscopy, soil chemistry, unconsolidated deposits, x-ray fluorescence, Fewer tags