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

Global Geochemical Database for Critical Minerals in Archived Mine Samples

The Critical Minerals in Archived Mine Samples Database (CMDB) contains chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States. In addition, the database contains samples from archetypal deposits from 27 other countries in North America, South America, Asia, Africa and Europe. Samples were obtained from archived ore collections under the U.S. Geological Survey's project titled "Quick Assessment of Rare and Critical Metals in Ore Deposits: A National Assessment" (2008 to 2013) in an effort to begin an assessment of the Nations' previously mined ore deposits for critical minerals. Mineralized and altered rock samples were provided by the Colorado...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Argentina, Arizona, Arkansas, Australia, All tags... Brazil, Burma, California, Canada, Chile, China, Colorado, Cuba, Democratic Republic of Congo, Economic Geology, Finland, Geochemistry, Germany, Honduras, Idaho, India, Indonesia, Japan, Kansas, Kentucky, Maine, Mauritania, Mexico, Michigan, Mineral Resources, Minnesota, Missouri, Montana, NGDB, Namibia, National Geochemical Database, Nevada, New Jersey, New Mexico, New York, North Carolina, Norway, Oklahoma, Oregon, Papua New Guinea, Pennsylvania, Peru, Philippines, Poland, Portugal, Russia, South Africa, South Carolina, South Dakota, Sweden, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vietnam, Virginia, Washington, Wisconsin, Wyoming, Zambia, aluminum, antimony, arsenic, atomic emission spectroscopy, barium, beryllium, bismuth, boron, cadmium, calcium, cerium, chemical analysis, chromium, cobalt, copper, critical minerals, dysprosium, economic geology, erbium, europium, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientific information, germanium, gold, hafnium, historic ores, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, metallic mineral resources, mineral deposit type, mineral deposits, mineralogy, molybdenum, neodymium, nickel, niobium, nonmetallic mineral resources, palladium, phosphorus, platinum, potassium, praseodymium, rhenium, rock geochemistry, rocks and deposits, samarium, scandium, silicon, silver, strontium, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags

Geochemical reanalysis of rock and sediment samples from the Lower Middle Fork of the Salmon River collected as part of the Idaho Primitive Area Studies in the 1960’s through 1980’s

This is a geochemical data set from the reanalysis of 44 rock samples collected between 1966 and 1970, and 107 sediment samples collected in 1966 and 1967. These samples were collected by the U.S. Geological Survey for a study investigating the mineral resources of the Idaho Primitive Area (Cater et al., 1973). The samples are from the Lower Middle Fork of the Salmon River, including the tributaries of Big Creek, Camas Creek, Brush Creek, Wilson Creek, Waterfall Creek, Ship Island Creek, Reese Creek, Stoddard Creek, and Papoose 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. Mary P. Rossillon (1981) explored...

Categories: Data; Tags: Annie Creek, Atomic absorption analysis, Atomic emission spectroscopy, Beaver Creek, Big Creek, All tags... Big Ramey Creek, Biotite, Biotite-feldspar, Biotite-muscovite, Botha Creek, Brush Creek, Cabin Creek, Calc-silicate rock, Camas Creek, Camp Creek, Canyon Creek, Cave Creek, Challis intrusive, Challis volcanic group, Chemical analysis, Chlorite-biotite, Cliff Creek, Coin Creek, Copper Creek, Coxey Creek, Crooked Creek, Diorite, Eagan Creek, Fawn Creek, GGGSC, Geochemistry, Geochemistry, Geology, Geology, Geophysics, and Geochemistry Science Center, Glacial deposit, Gneiss, Granite, Granodiorite, Hand Creek, Holy Terror Creek, Hornblende-biotite, Idaho, Idaho Primitive Area, Jackass Creek, Lake Creek, Lapilli tuff, Latite, Lehmi group, Lewis Creek, Little Marble Creek, Little Ramey Creek, Logan Creek, Lower Middle Fork Salmon, MRP, Mass spectroscopy, Metasedimentary rock, Middle Fork Salmon River, Middle Fork terraces, Migmatite, Mineral Resources Program, Monumental Creek, Moore Creek, Mule Creek, Neoproterozoic intrusive, Paint Creek, Papoose Creek, Parker Mountain, Phyllite, Porphyry, Quartzite, Quartzose, Rainbow Creek, Reese Creek, Rhyolite, Rush Creek, Schistose, Seafoam, Sedimentology, Ship Island Creek, Smith Creek, Snowslide Creek, Stoddard Creek, Sunnyside tuff, Syenite, Telephone Creek, Threemile Creek, Thunder Mountain, Timm Creek, Trap Creek, USGS Science Data Catalog (SDC), United States, Waterfall Creek, Wildhorse Creek, Wilson Creek, Windermere supergroup, Woodtick Creek, Yellowjacket, Yellowjacket Creek, Fewer tags

Phosphorus, nitrogen, carbon, calcium, pH, and dissolved oxygen data from incubations of Colorado River water and sediment and associated ambient river water measurements

Lake Powell retains most of the phosphorus that it receives, leading to downstream phosphorus limitation. These data were compiled to examine controls on phosphorus cycling below Lake Powell in the Colorado River and from storm inputs from the Paria River. Objectives of our study were to determine how several forms of phosphorus, both organic and inorganic, were cycled under varying dissolved oxygen concentrations and pH, reflecting the range of values observed in the river over the years. These data represent nitrogen, phosphorus, calcium, and carbon concentrations, water quality parameters (pH, dissolved oxygen, temperature), sediment composition, total protein, and extracellular enzyme activity (alkaline phosphatase)....

Categories: Data; Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geochemistry, All tags... Geography, Glen Canyon, Glen Canyon National Recreation Area, Grand Canyon, Grand Canyon National Park, Hydrology, Information Sciences, Lake Mead National Recreation Area, Lake Powell, Lees Ferry, Limnology, Little Colorado River, Paria River, Pearce Ferry, USGS Science Data Catalog (SDC), alkaline earth elements, alkaline phosphatase, atomic emission spectroscopy, biochemistry, biota, bulk density, calcite, calcium carbonate, carbon, chemical analysis, chemical attributes, dam, data release, dissolved oxygen concentrations, dissolved oxygen optodes, dissolved phosphorus concentrations, environment, extracellular enzyme activity, field experiments, freshwater ecosystems, incubations, inductively coupled plasma, inlandWaters, laboratory bottle incubations, laboratory experiments, nitrogen, nutrient content (water), nutrient cycling, organic matter, oxygen content (water), phosphorus, phosphorus content, phosphorus cycling, river systems, river water quality, riverine phosphorus cycling, sediment composition, suspended material (water), tailwater, total dissolved nitrogen, total phosphorus concentrations, total protein analysis, unconsolidated deposits, water chemistry, water chemistry data, water pH, water quality, water quality sonde, water samples, water temperature, Fewer tags

Chemistry of effluent generated during phosphate removal column experiment using iron and steel slag from the Chicago-Gary area of Illinois and Indiana, USA

These data represent the major, minor, and trace element compositions of effluent water samples generated by column experiments of modern and legacy iron and steel slag from the Chicago-Gary area of Illinois and Indiana. Details of the column experiments may be reviewed in the journal article listed in the cross-reference section of this data release titled, "Geochemical Characterization of Iron and Steel Slag and Its Potential to Remove Phosphate and Neutralize Acid".

Categories: Data; Tags: Chicago, Cook County, Gary, Illinois, Indiana, All tags... Indiana Harbor, Lake County, atomic emission spectroscopy, chemical analysis, geochemistry, mass spectroscopy, 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

Argon and geochemical data for: 40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO

This dataset accompanies publication '40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO', to be published in Rocky Mountain Geology, which analyzed lava flows on North and South Table Mountain in Golden, CO, for argon geochronology and geochemistry.

Categories: Data; Tags: 40Ar/39Ar, Cretaceous, Eocene, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags... MRP, Mineral Resources Program, North Table Mountain, Paleogene, Ralston Buttes, Ralston Dike, South Table Mountain, USGS Science Data Catalog (SDC), atomic emission spectroscopy, geochemistry, geochronology, geoscientificInformation, mass spectroscopy, radiometric dating, Fewer tags

Geochemical data used in the tungsten skarn mineral resource assessment of the Great Basin region of western Nevada and eastern California

The U.S. Geological Survey (USGS) has undertaken a mineral resources assessment for tungsten for a portion of the Great Basin in parts of western Nevada and east-central California. This data release provides the Great Basin Tungsten Database: the geospatial and geologic data, and results of chemical analyses for 46,955 samples collected in the assessment area, extracted from the USGS National Geochemical Database. These rock records were collected as part of various programs and projects at the USGS and analyzed from 1963 to 2015. The database represents rock records, each comprising one best value chemical determination for each analyzed chemical species, that include skarns, carbonate lithologies (for example,...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Great Basin, MRP, All tags... Mineral Resource Assessment Training Program, Mineral Resources Program, NGDB, National Geochemical Database, Nevada, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, aluminum, analytical chemistry, antimony, arsenic, atomic emission spectroscopy, barium, beryllium, bismuth, boron, bromine, cadmium, calcium, carbon, cerium, cesium, chemical analysis, chlorine, chromium, cobalt, copper, critical minerals, dysprosium, economic geology, erbium, europium, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientificInformation, germanium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, mercury, metallic mineral resources, mineral deposits, mineral resources, molybdenum, neodymium, nickel, niobium, palladium, phosphorus, platinum, potassium, praseodymium, rhenium, rhodium, rock geochemistry, rocks and deposits, rubidium, ruthenium, samarium, scandium, selenium, silicon, silver, sodium, strontium, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags

Raman and Synchrotron X-ray Data of Sold Phases Used in Chromium Sequestration and Re-oxidation Experiments with Sand and Sediment from Hinkley, CA

This page contains (a) bulk synchrotron-based X-ray absorption spectra; (b) microbeam synchrotron-based X-ray fluorescence maps and spectra; and (c) microbeam Raman spectra (and corresponding optical images). These data were used to understand chromium, iron, and manganese valence and mineral residence in natural and synthetic mineral mixtures used in laboratory experiments designed to simulate dynamic conditions in an engineered aquifer system [see Izbicki and Groover (2018) and Miller and others (2020)].

Categories: Data; Tags: Hinkley, CA, aquifer, atomic emission spectroscopy, carbon, chromium, All tags... environment, geochemistry, iron, manganese, mass spectroscopy, toxic trace element contamination, x-ray fluorescence, Fewer tags

Portable XRF, ICP-MS/OES, and Organic Carbon Bulk Chemical Data of Solids Used in USGS' Study of Hexavalent Chromium Contamination of Ground Water Near Hinkley, CA

This child page contains: (a) qualitative compositional data for 3 elements (chromium, manganese, and iron) as determined by X-ray fluorescence spectrometry using a portable instrument (“pXRF”) mounted in a test stand in the laboratory and (b) quantitative compositional data for up to 60 elements (some not reported quantitatively) determined by chemical digestion (sodium peroxide fusion) followed by inductively-coupled plasma-optical emission or inductively-coupled plasma-mass spectrometry, and (c) quantitative total organic carbon data. The pXRF data collected after July 22, 2019 presented here is subject to secondary data review as required by the Energy and Minerals Mission Area Quality Management System (EMMA...

Categories: Data; Tags: Hinkley, CA, aquifer, atomic emission spectroscopy, carbon, chromium, All tags... environment, geochemistry, mass spectroscopy, toxic trace element contamination, x-ray fluorescence, Fewer tags

Laboratory generated leachates of modern and legacy iron and steel slag from the Chicago-Gary area of Illinois and Indiana, USA using USEPA method 1312 Synthetic Precipitation Leaching Procedure

These data represent the major, minor, and trace element compositions of laboratory generated leachates of modern and legacy iron and steel slag from the Chicago-Gary area of Illinois and Indiana, USA using USEPA method 1312 Synthetic Precipitation Leaching Procedure.

Categories: Data; Tags: Chicago, Cook County, Gary, Illinois, Indiana, All tags... Indiana Harbor, Lake County, atomic emission spectroscopy, chemical analysis, geochemistry, mass spectroscopy, 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

Chemistry of groundwater, pore water, and surface water near wetland P1 in the Cottonwood Lake Study Area, Sutsman County, ND - August 2013

Groundwater, soil pore water, and surface water were collected in and near wetland P1 in the Cottonwood Lake Study Area, Stutsman County, North Dakota in August 2013. Groundwater was collected from established wells (17, 18, and 22) via peristaltic pump. Surface water was collected from P1 ponded water via grab sample. Soil pore water was collected using drive point samplers and one suction lysimeter. Water samples were analyzed for pH and major ion chemistry.

Categories: Data; Tags: Atomic Emission Spectroscopy, Chemical Analyses, Cottonwood Lake Study Area, Geochemistry, Geochemistry, All tags... Mass Spectrometry, Missouri Coteau, North Dakota, Salinity, Stutsman County, USGS Science Data Catalog (SDC), Water Chemistry, Wetland, 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

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

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

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

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

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...

Types: Application, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Atlantic Ocean, Bahamas, Belize, Brazil, All tags... CTD measurement, Caribbean Sea, China, Florida, Georgia, Gulf of Mexico, Honduras, Louisiana, Marshall Islands, Maryland, Mexico, Mississippi, Navassa Island, New Jersey, New Mexico, New York, Pacific Ocean, Philippines, Puerto Rico, Texas, Turks and Caicos Islands, 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, environment, faunal and floral census (microscopic), field sampling, geolocation measurement, geology, geoscientificInformation, grab sampling, grain-size analysis, information technology methods, isotopic analysis, laboratory methods, light stable isotope analysis, luminescence dating, magnetic susceptibility, marine geology, mass spectroscopy, oceans, paleomagnetic analysis, permeability, photography, piston coring, porosity, protists, push coring, radiometric dating, rock, rotary drilling, salinity, sample repositories, samples, sea surface temperature, sediment, soil sciences, stratigraphy, subsampling, tomography, vibracoring, water chemistry, water quality, x-ray diffraction, x-ray fluorescence, Fewer tags