Filters: Tags: {"type":"USGS Scientific Topic Keyword","name":"geochemistry"} (X) > Types: Shapefile (X) > partyWithName: U.S. Geological Survey (X)

Filters Date Range Past year (8) Past month (2) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (35) ArcGIS Service Definition (1) Types Downloadable (35) Map Service (35) OGC WFS Layer (35) OGC WMS Layer (35) ArcGIS REST Map Service (1) More... Contacts U.S. Geological Survey - ScienceBase Geology, Geophysics, and Geochemistry Science Center Energy and Minerals GS GGGSC DM Team Matthew Granitto More... Categories Data (35) Data Release - Revised (2) Tags (with Type=USGS Scientific Topic Keyword ) geochemistry (35) mineral resources (13) economic geology (10) hydrology (9) water quality (7) water resources (6) environmental health (3) More... View Results as: JSON ATOM CSV

Whole rock geochemical data from the eastern part of the Yukon-Tanana Upland region, Alaska, USA This data release is part of a 2016-2019 study on the geology, geochemistry and geochronology of ore systems in the eastern Yukon-Tanana Upland region, Alaska. Whole rock chemistry was conducted on 185 samples, mostly from Au prospects, with lesser samples from porphyry Cu prospects. Geographically, most samples are from gold prospects near the Pogo Au mine and east to Black Mountain in the Big Delta quadrangle. Fewer samples are from prospects in the Eagle and Tanacross Quadrangles. Samples were submitted to the USGS contract laboratory and analyzed for select trace elements and gold. Sixty elements were determined by inductively coupled plasma-optical emission spectroscopy-mass spectroscopy (ICP-OES-MS), sodium... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Big Delta, Black Mountain, Eagle, Economic Geology, All tags... GGGSC, Geochemistry, Geology, Geophysics and Geochemistry Science Center, ICP-MS, MRP, Mineral Resources, Mineral Resources Program, Mount Hayes, NCCWSC, Tanacross, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Yukon-Tanana Upland, chemical analysis, economic geology, geochemistry, geoscientificInformation, inductively coupled plasma mass spectrometry, metallic mineral resources, mineral deposits, mineral resources, Fewer tags Geochemical and Modal Data for Mesoproterozoic Igneous Rocks of the St. Francois Mountains, Southeast Missouri This data release accompanies the Data Series report 'Compilation of new and previously published geochemical and modal data for Mesoproterozoic igneous rocks of the St. Francois Mountains, southeast Missouri’ (https://doi.org/10.3133/ds1080). The compilation includes recently acquired as well as previously published geochemical and modal petrographic data for igneous rocks in the St. Francois Mountains, southeast Missouri, and supports an ongoing effort to understand the regional geology and ore deposits of the Mesoproterozoic basement rocks of southeast Missouri, USA. This data release includes geochemical data that are (1) newly acquired by the U.S. Geological Survey (USGS) and (2) compiled from numerous sources... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Energy Resources, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, MRP, All tags... Mineral Resources Prog, Mineralogy, Missouri, St. Francois Mountains, St. Francois Mountains terrane, USA, USGS Science Data Catalog (SDC), United States of America, geoscientificInformation, southeast Missouri, Fewer tags Occurrence of per- and polyfluoroalkyl substances, Long Island and New York City, New York State and local county health departments have detected per- and polyfluoroalkyl substances (PFAS) in groundwater downgradient of airports and military and firefighting training areas in Long Island, New York. However, the occurrence and spatial distribution of PFAS throughout the surficial aquifer is not well established. Shallow groundwater samples were collected in 2018 from two observation well networks; the Sentinel network and Wastewater Treatment Plant groundwater (WTPGW) network. The Sentinel network is an island-wide group of wells screened within the shallow upper glacial (surficial, <100 feet deep) aquifer, which were sampled to assess the occurrence of PFAS in different land-use settings. The WTPGW network... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Contaminants, Emerging, Geochemistry, Groundwater-Quality Monitoring, Hydrology, Long Island, All tags... Nassau County, New York, PFAS, Queens County, Suffolk County, USGS Science Data Catalog (SDC), United States, Water Quality, Water Quality, Water Quality, contaminants of emerging concern, groundwater quality, groundwater quality, water quality, water sampling, Fewer tags Reanalysis of Additional Selected Archived NURE-HSSR Sediment Samples from Idaho and Montana In December of 2018, the U.S. Geological Survey (USGS) signed a Technical Assistance Agreement with a third party to reanalyze 2,324 archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Idaho and Montana. A small amount (approximately 0.25 grams [g]) of sieved <75-micron sample material was retrieved from the USGS National Geochemical Sample Archive for geochemical analysis. These samples were analyzed for 48 elements by ALS Global laboratories using their ultra-trace four-acid-digestion dual-mode inductively coupled plasma mass spectrometry (ICPMS) (ALS ME-MS61L) method (Ag, Al, As, Ba,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Benewah, Benewah County, Idaho, Bonner County, Idaho, Boundary County, Idaho, Flathead County, Montana, All tags... GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Hydrogeochemistry and Stream Sediment Reconnaissance, Idaho, Kootenai, Kootenai County, Idaho, Lake County, Montana, Lincoln County, Montana, MRP, Mineral County, Montana, Mineral Resources, Mineral Resources Program, Missoula County, Montana, Montana, NURE, NURE-HSSR, National Geochemical Sample Archive, National Uranium Resource Evaluation, Shoshone County, Idaho, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, chemical analysis, environmental geochemistry, exploration geochemistry, geochemical data, geochemistry, geoscientific information, natural resource exploration, sediment chemistry, sediment geochemistry, spring sediment, stream sediment, unconsolidated deposits, uranium, Fewer tags Hydrologic and Geochemical Data and Models Supporting Integrated Evaluation of the Captain Jack Superfund Site, Boulder County, Colorado The Captain Jack Superfund site near Ward, Colorado hosts extensive interconnected underground mine workings, which drain via the Big Five Adit. Drainage from the adit has historically been acidic with elevated concentrations of metals. In 2018 the U.S. Environmental Protection Agency (EPA) utilized a subsurface remediation strategy consisting of the installation of a hydraulic bulkhead within the workings to preclude drainage out of the mine. To understand the processes occurring during water impoundment within the mine workings, the U.S. Geological Survey (USGS), in cooperation with EPA, completed water-quality sampling and analysis during 2020 as water was impounded within the mine workings. The USGS sampling... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Boulder County, Colorado, Geochemistry, Hydrology, USGS Science Data Catalog (SDC), All tags... Ward, Water Quality, Water Resources, abandoned mines and quarries, geochemistry, groundwater age, groundwater quality, hydrology, mine drainage, mineral deposits, noble gas elements, oxygen isotope analysis, rare earth elements, tracer study, water-level measurements, Fewer tags Groundwater and surface water data for a regional assessment of groundwater salinity variations and sources in the Indio Subbasin of the Coachella Valley, California The U.S. Geological Survey collected groundwater samples from 17 wells in the Indio subbasin (CA basin designation 7-21.01) of the Coachella Valley and surface water samples from two sites representing sources of recharge to the Indio subbasin in 2021. These samples are intended to provide inorganic water quality data, particularly total dissolved solids (TDS), within areas of the Indio subbasin not sampled for the Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project’s assessment of the quality of groundwater used for domestic and small system drinking water supplies in Coachella Valley (CODA). Other areas of special interest for the Indio salinity study were nearby managed aquifer... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Coachella Valley, Geochemistry, Groundwater, Groundwater age, All tags... Hydrology, Indio, Indio Subbasin, La Quinta, Palm Desert, Palm Springs, Riverside County, Salinity, Surface Water, TDS, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Water quality, geoscientificInformation, Fewer tags Whole-rock geochemical data for alkaline intrusive rocks in the Wet Mountains area of Custer and Fremont Counties, south-central Colorado, USA This data release contains the whole-rock major and trace element analyses of 51 samples of intrusive igneous rocks from the Wet Mountains area of Custer and Fremont counties of south-central Colorado, collected by U.S. Geological Survey (USGS) geologists. The samples were collected from breccias, veins and thin dikes, and a variety of carbonatite, felsic, mafic, and ultramafic intrusions across the area. The first 41 samples listed in this data release were collected in July 2007, originally as part of a reconnaissance study of the thorium deposits of the area (Van Gosen and others, 2009). The samples are grab samples from outcrops, shallow open-pit excavations, and mineral prospect trenches. The last 10 samples... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Custer County, DOI, Democrat Creek, Department of the Interior, All tags... Economic Geology, Energy and Minerals Mission Area, Fremont County, GGGSC, Gem Park, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, ICP-AES, ICP-MS, Inductively Coupled Plasma-Atomic Emission Spectrometry, Inductively Coupled Plasma-Mass Spectrometry, Iron Mountain, MRP, McClure Mountain, Mineral Resources, Mineral Resources Program, Region 7: Upper Colorado Basin, U.S. Geological Survey, USA, USGS, USGS Science Data Catalog (SDC), USGS:5e7130b3e4b01d50926823f3, United States of America, WDXRF, Wavelength Dispersive X-Ray Fluorescence Spectrometry, Wet Mountains, data release, economic geology, geochemistry, geology, geoscientificinformation, mass spectroscopy, metallic mineral resources, mineral resources, rare earth elements, south-central Colorado, thorium, Fewer tags Geochemical reanalysis of rock and sediment samples from the Middle Fork and South Fork of the Salmon River collected in the mid-1960s through the early 1970s as part of the Idaho Primitive Area studies This data release is a geochemical data set from the reanalysis of 23 rock and 85 sediment samples collected between 1966 and 1970 by the U.S. Geological Survey (USGS) for a series of studies investigating the mineral resources of the Idaho Primitive Area (Cater et al., 1973). The samples are from the upper Middle Fork Salmon River and the South Fork Salmon River, including the tributaries of East Fork of the South Fork and Porphyry Creek. The overall objective of this study is to characterize the regional impact of legacy mining for the Frank Church - River of No Return Wilderness Area. In 1980 the U. S. Congress passed the Central Idaho Wilderness Act which combined the Idaho Primitive Area, the Salmon Rivers... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Automatic Creek, Beansnapper Creek, Bear Creek, Big Chief Creek, Big Cottonwood Creek, All tags... Cabin Creek, Cache Creek, Cane Creek, Canyon Creek, Challis Volcanic Group, Colorado, Colt Creek, Cornish Creek, Cultus Creek, Dewey Mine, East Fork Indian Creek, East Fork South Fork Salmon River, East Fork Springfield Creek, East Fork Trail Creek, Forty-five Creek, Frank Church - River of No Return Wilderness Area, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Glass Mountain, Gunsight Formation, Idaho, Idaho Primitive Area, Indian Creek, Little Indian Creek, Little Loon Creek, Little Pistol Creek, Loon Creek, Luger Creek, MRP, Marble Creek, Mearney Creek, Middle Fork Indian Creek, Middle Fork Salmon River, Middle Fork terraces, Mineral Resources Program, North Fork Porphyry Creek, North Fork Wolf Fang Creek, Pistol Creek, Poee Creek, Porphyry Creek, Profile Creek, Pungo Creek, Rapid River, Ryan Creek, Salmon Rivers Breaks Primitive Area, Shrapnel Creek, Silver Plume, South Fork Salmon River, South Fork Wolf Fang Creek, Spring Creek, Springfield Creek, Sugar Creek, Sunnyside tuff, Tamarack Creek, Thirty-two Creek, Thunder Mountain Caldera, Trail Creek, Trigger Creek, Twenty-five Creek, USA, USGS Science Data Catalog (SDC), United States, Upper Middle Fork Salmon River, West Fork Little Loon Creek, West Fork Trail Creek, Wolf Fang Creek, alluvium, arsenic, atomic absorption analysis, atomic emission spectroscopy, biotite, carbonate rock, chemical analysis, clastic rock, conglomerate, copper, critical minerals, foliation, geochemistry, geology, gneiss, granite, granodiorite, hornblende, hornblende-biotite, hydride generation, lapilli tuff, mass spectroscopy, metallic mineral resources, migmatite, mineral deposits, mineral resources, mineralization, muscovite sulfides, muscovite-biotite, nonmetallic mineral resources, pebble conglomerate, phyllite, porphyry, quartz, rhyolite, rock drainage, sandstone, tributary, tuff, volcanic rock, Fewer tags Environmental tracer data from surface water and groundwater samples collected in Redwell Basin near Crested Butte, Colorado, 2017-2019 This dataset contains environmental tracer data from surface water and groundwater samples collected by the U.S. Geological Survey in Redwell Basin, an alpine watershed in the Elk Mountains near the town of Crested Butte, Colorado. The basin is underlain by interbedded shale and sandstone that have been variably hydrothermally altered and silicified by local magmatic intrusions. Samples were collected from 2017 to 2019 from bedrock monitoring wells completed at multiple depths, shallow hand-installed piezometers and mini boreholes, springs, mine adits, and streams. The tracer data include stable isotopes of water (oxygen-18 and deuterium), tritium, dissolved noble gases (He, Ne, Ar, Kr, Xe, and helium-3/helium-4... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Crested Butte, Elk Mountains, Environmental Health, GGGSC, All tags... Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Gunnison County, Hydrology, Lawrence Berkeley National Laboratory, MRP, Metal transport in mineralized mountain watersheds, Mineral Resources, Mineral Resources Program, Oh-be-joyful Creek, Redwell Basin, Redwell Creek, Rocky Mountain Biological Laboratory, Slate River, Subsurface Biogeochemical Research Program, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Quality, alpine watershed, climate variability, dissolved gases, geoscientificInformation, groundwater, groundwater flow, isotopic analysis, mineralization, noble gas elements, recharge, surface water (non-marine), water chemistry, water quality, Fewer tags Hydrologic reconnaissance to identify areas of emergent groundwater, Mineral Creek, near Silverton, Colorado, June 2020 Hydrologic reconnaissance of Mineral Creek near Silverton, Colo., was conducted from June 25-27, 2020. Both banks of Mineral Creek and the adjacent hillsides were walked, starting near the ghost town of Chattanooga and proceeding downstream to the confluence of Mineral Creek with the Middle Fork of Mineral Creek. The purpose of this reconnaissance was to identify areas of emergent groundwater on the right (EGR) and left (EGL) banks, a task that was accomplished by following observed surface flows (seeps and springs) upgradient to the point at which they emanated from the subsurface. Coordinates, using a handheld global positioning system (GPS) device, and photographs were obtained at these locations of emergent... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bonita Peak Mining District, CWSC, Colorado, Colorado Water Science Center, GGGSC, All tags... Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Hydrology, MRP, Mineral Creek, Mineral Creek, Mineral Resources, Mineral Resources Program, San Juan County, San Juan Mountains, Silverton, Silverton Caldera, Southern Rocky Mountains Volcanic Field, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Quality, Water Resources, environment, geoscientificInformation, groundwater, hydrogeology, hydrology, water chemistry, Fewer tags Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Alaska Selected archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program, were reanalyzed by the U.S. Geological Survey (USGS) as part of a NURE-HSSR Reanalysis project (Smith and others, 2018). A small amount (approximately 0.25 grams [g]) of sieved less than 75-micron sample material was retrieved from the USGS National Geochemical Sample Archive for geochemical analysis. These samples were analyzed for 51 elements under a Technical Assistance Agreement with a third party by ALS Global laboratories using their ultra-trace four-acid-digestion dual-mode inductively coupled plasma-optical emission spectrometry/mass spectrometry... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, DOE, Economic Geology, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, Hydrogeochemistry and Stream Sediment Reconnaissance, Iliamna, Lake Clark, Mineral Resources, NURE, NURE-HSSR, National Geochemical Sample Archive, National Uranium Resource Evaluation, Pebble Deposit, U.S. Department of Energy, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, chemical analysis, environmental geochemistry, exploration geochemistry, geochemical data, geochemistry, lake sediment, natural resource exploration, sediment chemistry, sediment geochemistry, stream sediment, unconsolidated deposits, uranium, Fewer tags Kinnickinnic River Geochemistry and Rapid Geomorphic Assessments, Waukesha County, Wisconsin From September 2019 to October 2020 a stream sediment budget and sediment fingerprinting integrated study was conducted to quantify upland and stream corridor sources of suspended sediment and sediment-bound phosphorus using the Sediment Source Assessment Tool (SedSAT) methods with a suite of trace elements. Upland source samples were collected at 45 randomly selected sites in the watershed. Passive suspended-sediment samplers were installed at three sites and sampled monthly. Soft, fine-grained streambed sediment was collected if present at 18 rapid geomorphic assessment (RGA) sites. An inventory of bank erosion and soft-sediment deposition was also done at each of the 18 RGA sites, which were selected to represent... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Geochemistry, Geomorphology, Kinnickinnic, Milwaukee, USGS Science Data Catalog (SDC), All tags... Waukesha, Wisconsin, geoscientificInformation, sediment transport, Fewer tags Surface electrical resistivity tomography, magnetic, and gravity surveys in Redwell Basin and the greater East River watershed near Crested Butte, Colorado, 2017 Surface electrical resistivity tomography (ERT), time-domain electromagnetics (TEM), nuclear magnetic resonance (NMR), magnetics, and gravity data were acquired in 2016, 2017 and 2018 in the greater East River Watershed near Crested Butte Colorado with a focused effort in Redwell Basin. Five ERT profiles were acquired within Redwell Basin and Brush Creek to map geologic structure at depths up to 40 meters, depending on the subsurface resistivity, using the Advanced Geosciences, Inc. SuperSting R8 resistivity meter. Approximately ten kilometers of total field magnetics data were acquired with a Geometrics G-858 cesium vapor magnetometer that detects changes in deep (tens of meters to kilometers) geologic structure... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Brush Creek, Colorado, Crested Butte, East River, Environmental Health, All tags... GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Gothic, Gunnison County, Hydrology, MRP, Mineral Resources, Mineral Resources Program, Mount Emmons, Oh-be-joyful, Redwell Basin, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Resources, bouguer anomaly, electrical resistivity tomography, environment, free-air anomaly, geophysics, geoscientificInformation, geospatial datasets, gravimeter measurement, gravitational field (earth), gravity, groundwater, hydrogeology, magnetic anomaly maps, magnetic field, magnetic surveying, magnetics, resistivity, water resources, Fewer tags Geochemical data for the Elk Creek alkaline complex, southeast Nebraska This U.S. Geological Survey (USGS) data release contains analytical data from a suite of rock and mineral samples collected from drill core within the Elk Creek alkaline complex, southeast Nebraska. This complex hosts the Elk Creek carbonatite, a multilithologic carbonatite enriched in niobium, rare earth elements (REEs), scandium, and titanium. Mineralized carbonatites are the world’s primary source of rare earth elements (REEs) and niobium, but only a few deposits are responsible for meeting the current demand of these critical elements such that there is increasing interest in other carbonatites that have the potential to help meet future demands. This study focuses on the Elk Creek carbonatite, the largest... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Economic Geology, Elk Creek, Elk Creek carbonatite, Geochemistry, Johnson County, All tags... Mineral Resources, Nebraska, Pawnee County, USGS Science Data Catalog (SDC), carbonatite, economic geology, geochemistry, geology, mineral resources, niobium, rare earth elements, Fewer tags Argon geochronology data for eastern Bhutan This dataset accompanies publication 'The influence of foreland structures on hinterland cooling: evaluating the drivers of exhumation in the eastern Bhutan Himalaya'. The Ar/Ar data provides time constraints for the cooling of rocks in the study area. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 40Ar/39Ar, Argon Geochronology Laboratory, Bhutan, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resources Program, Structural Geology, USGS Science Data Catalog (SDC), geochronology, geoscientificInformation, mass spectroscopy, radiometric dating, Fewer tags Isotope analyses (234U/238U, 87Sr/86Sr, δ13C, and δ18O) and U-series disequilibrium ages for speleothem, water, and rock samples associated with Fitton Cave, Buffalo National River, Arkansas, USA This data release contains tabular data (comma-separated-value files) of natural radiogenic isotopes of strontium, uranium, and thorium for samples of modern water, speleothems, associated with Fitton Cave, north central Arkansas, as well as rock that host the cave deposits. In addition, U-series ages (230Th/U dates and model 234U/238U dates) are calculated from those data for subsamples of speleothems. Stable isotopes of oxygen and carbon are reported for a subset of the stalagmite samples. Sample locations and descriptions as well as specific sub-sample imagery and narrative explanations are included as information supporting the analyses. Selected results are depicted as data plots in an accompanying Excel spreadsheet... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Buffalo National River, Fitton Cave, Geochemistry, Geomorphology, All tags... Hydrology, Isotope geochemistry, Newton County, U-series disequilibrium dating, USGS Science Data Catalog (SDC), carbon isotopes, cave deposits, geochronology, oxygen isotopes, speleothems, strontium isotopes, uranium isotopes, Fewer tags Isotopic, geochronologic and soil temperature data for Holocene and late Pleistocene soil carbonates of the San Luis Valley, Colorado and New Mexico, USA This data release contains radiocarbon dates and clumped isotope ratios for soil carbonates as well as observed soil temperatures for study sites in the San Luis Valley, Colorado and New Mexico, USA. The companion publication can be found at https://doi.org/10.1029/2023GC011221. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Geochemistry, Hydrology, Land Use Change, New Mexico, All tags... San Luis Valley, Soil Sciences, USGS Science Data Catalog (SDC), biota, clumped isotopes, radiocarbon, soil carbonate, soil temperature, Fewer tags Grain size, mineralogic, and trace-element data from field samples near Hinkley, California This data release is 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). The data release includes 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 near Hinkley, CA. The cooperator for this study is the Lahontan Regional... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Environmental Health, Geochemistry, Hinkley, USGS Science Data Catalog (SDC), All tags... Water Resources, atomic emission spectroscopy, background level, chemical analysis, 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 Carbonatite whole-rock and calcite geochemistry from the Bear Lodge alkaline complex, Wyoming and Mountain Pass mine, California Whole-rock and calcite geochemical data are reported for twelve carbonatite samples collected from the Bear Lodge alkaline complex, Wyoming and from the Mountain Pass mine, California. Calcite geochemical data was collected using electron microprobe and laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses. Reported whole-rock data was measured by inductively coupled plasma-optical emission spectrometry (ICP-OES), inductively coupled plasma-mass spectrometry (ICP-MS), ion selective electrode-fluoride (ISE-F), and wavelength dispersive X-ray fluorescence (WDXRF). Geochemical data are presented in downloadable .csv files. Spatial data of sample collection sites are provided as polygons in... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bear Lodge Mountains, Black Hills, California, California, Carbonatite, All tags... Crook County, Economic Geology, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, ICP-MS, ICP-OES, ISE-F, Inductively coupled plasma-mass spectrometry, Inductively coupled plasma-optical emission spectrometry, Ion selective electrode-fluoride, LA-ICP-MS, Laser ablation inductively coupled plasma-mass spectrometry, MRP, Microprobe, Mineral Resources Program, Mountain Pass mine, REE, Rare earth elements, San Bernardino County, USGS, USGS Science Data Catalog (SDC), United States Geological Survey, WDXRF, Wavelength dispersive X-ray fluorescence, Wyoming, Wyoming, geochemistry, rare earth elements, Fewer tags The major, minor, and trace element geochemistry of mineral scales from The Geysers geothermal field, California, USA This data release provides quantitative whole rock geochemical results from The Geysers vapor-dominated geothermal field in California. The concentrations of major elements are reported in oxide weight percent by wavelength dispersive x-ray fluorescence (WDXRF), the concentrations for sixty elements are reported in elemental weight percent (pct) or parts per million (ppm) from inductively coupled plasma-optical emission spectrometry-mass spectrometry ICP-OES-MS analysis, mercury is reported in ppm by cold vapor atomic absorption spectrometry (CVAAS), and ammonium in ppm from automated colorimetry analysis. The analyses show significant enrichment of volatile elements and elements such as sulfur, boron, arsenic,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Lake County, All tags... MRP, Mineral Resources Program, Sonoma County, The Geysers, USGS Science Data Catalog (SDC), United States, ammonium, arsenic, boron, chemical analysis, cobalt, cold vapor atomic absorption spectrometry (CVAAS), copper, geochemistry, geoscientificInformation, geothermal field, iron, lead, mercury, mineral resources, mineral scales, mineralogy, nickel, sulfur, wavelength dispersive X-ray fluorescence (WDXRF), zinc, Fewer tags 1 2 »