The geochemical data included here were generated as part of a Technical Assistance Agreement between the U.S. Geological Survey (USGS) and Rio Tinto Exploration based in Salt Lake City, Utah. Beginning in November of 2015, we began a project to reanalyze up to 60,000 archived sample splits originally collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A small amount (approximately 0.25 g) of sieved <75 micron sample material was retrieved from the USGS National Geochemical Sample Archive for geochemical analysis. These samples were analyzed for 51 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, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, In, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn, and Zr plus Au, Pt, and Pd). Blind geologic reference materials (GRM), blanks, and sample duplicates were inserted by the USGS into every job of 36 samples to ensure the quality of the data. The results from these quality control (QC) samples, along with QC samples inserted by the laboratory, were evaluated for every job by a QC Manager. Only data that passed these checks were approved for release. Samples with analytical results that failed to pass the QC checks were reanalyzed and re-evaluated before the data were approved for release. The archived sample splits came from the NURE program, which began in 1973 with a primary goal of identifying uranium resources in the U.S. As one of nine components of the NURE program, the HSSR project systematically sampled the U.S. between 1976 and 1980 under the direction of four U.S. Department of Energy (DOE) national laboratories. Although there was some collaboration, each DOE laboratory developed its own sample collection, analytical, and data management methodologies, and hired contractors to do much of the actual work. Initially, Lawrence Livermore Laboratory (LLL) was responsible for the western states of Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington; Los Alamos Scientific Laboratory (LASL) was responsible for the Rocky Mountain States (Colorado, Montana, New Mexico, and Wyoming) as well as Alaska; the Oak Ridge Gaseous Diffusion Plant (ORGDP) was responsible for 12 central Plains and upper Great Lakes States; and Savannah River Laboratory (SRL) was responsible for the remaining 23 states along the Eastern Seaboard, lower Great Lakes, Appalachians, and Gulf Coast. However, by 1979 the areas of responsibility had changed from state lines to 2-degree quadrangle boundaries and SRL had taken over the responsibility for completing the seven western states formerly assigned to LLL. Thus, quadrangles in the western third of the U.S. were variously sampled and analyzed by LLL, LASL, and SRL. Due to the enormous number of samples collected by these laboratories, some were sent to ORGDP for additional chemical analyses (Information Systems Programs, 1985; Smith, 1997). Geochemical samples were collected from multiple sources (78 percent stream-, 8 percent lake-, and 2 percent spring-sediments, and 12 percent soils). Analytical methods differed between laboratories and evolved over time so that 29 single- and multi-element analytical procedures, or variations thereof, were used during the project. The NURE-HSSR sediment and soil database compiled by Smith (1997) provides analytical results for 54 different elements (Ag, Al, As, Au, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Eu, F, Fe, Hf, Hg, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Pt, Rb, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Th, Ti, U, V, W, Y, Yb, Zn, and Zr). However, no sample was analyzed for more than 46 elements, some were analyzed for uranium only, and a few samples were never analyzed at all. Funding cuts after 1980 curtailed the NURE-HSSR sampling efforts and left the project incomplete with only 65% coverage of the U.S. The NURE program effectively ended about 1983-84. Out of a total of 625 quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled, and another 86 quadrangles were partially sampled. In 1984, all of the NURE-HSSR data, maps, field notes, and archived samples splits were transferred to the USGS (Grimes, 1984). Despite inconsistencies in sample media, elements analyzed, and analytical methods used, the original data, and particularly data from reanalysis of archived NURE-HSSR samples, have been very useful for a variety of USGS studies ranging from regional-scale mineral resource assessments to environmental investigations (Smith and others, 2013). Due to the number of different DOE laboratories, analytical methods, and sample media used, the NURE-HSSR data from the western third of the United States have the largest number of inconsistencies and are the most difficult to use on a regional basis. This area contains several large mining districts and continues to be an area of exploration interest for undiscovered mineral resources.

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 (ICP-OES/MS) (ALS ME-MS61L) method (Ag, Al, As, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, In, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn, Hf_p, Zr_p, Au_sq, Pt_sq, Pd_sq).
Blind standard reference materials (SRM), blanks, and sample duplicates were inserted by the USGS into every job of 36 samples to ensure the quality of the data. The results from these quality control (QC) samples, along with QC samples inserted by the laboratory, were evaluated for every job by a QC Manager. Only data that passed these checks were approved for release. Samples with analytical results that failed to pass the QC checks were reanalyzed and re-evaluated before the data were approved for release. The archived sample splits came from the NURE program, which began in 1973 with a primary goal of identifying uranium resources in the United States. As one of nine components of the NURE program, the HSSR project systematically sampled the United States between 1976 and 1980 under the direction of four U.S. Department of Energy (DOE) national laboratories. Although there was some collaboration, each DOE laboratory developed its own sample collection, analytical, and data management methodologies, and hired contractors to do much of the actual work.
Initially, Lawrence Livermore Laboratory (LLL) was responsible for the western states of Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington; Los Alamos Scientific Laboratory (LASL) was responsible for the Rocky Mountain States (Colorado, Montana, New Mexico, and Wyoming) as well as Alaska; the Oak Ridge Gaseous Diffusion Plant (ORGDP) was responsible for 12 central Plains and upper Great Lakes States; and Savannah River Laboratory (SRL) was responsible for the remaining 23 states along the Eastern Seaboard, lower Great Lakes, Appalachians, and Gulf Coast. However, by 1979 the areas of responsibility had changed from state lines to 2-degree quadrangle boundaries and SRL had taken over the responsibility for completing the seven western states formerly assigned to LLL. Thus, quadrangles in the western third of the U.S. were variously sampled and analyzed by LLL, LASL, and SRL. Due to the enormous number of samples collected by these laboratories, some were also sent to ORGDP for additional chemical analyses (Information Systems Programs, 1985; Smith, 1997).
Geochemical samples were collected from multiple sources (78 percent stream-, 8 percent lake-, and 2 percent spring-sediments, and 12 percent soils). Analytical methods differed between laboratories and evolved over time so that 29 single- and multi-element analytical procedures, or variations thereof, were used during the project. The NURE-HSSR sediment and soil database compiled by Smith (1997) provides analytical results for 54 different elements (Ag, Al, As, Au, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Eu, F, Fe, Hf, Hg, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Pt, Rb, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Th, Ti, U, V, W. Y, Yb, Zn, and Zr). However, no sample was analyzed for more than 46 elements, some were analyzed for uranium only, and a few samples were never analyzed at all.
Funding cuts after 1980 curtailed the NURE-HSSR sampling efforts and left the project incomplete with only 65 percent coverage of the United States. The NURE program effectively ended about 1983-84. Out of a total of 625 quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled, and another 86 quadrangles were partially sampled. In 1984, all of the NURE-HSSR data, maps, field notes, and archived samples splits were transferred to the USGS (Grimes, 1984).
Despite inconsistencies in sample media, elements analyzed, and analytical methods used, the original data and, particularly data from reanalysis of archived NURE-HSSR samples have been very useful for a variety of USGS studies ranging from regional-scale mineral resource assessments to environmental investigations (Smith and others, 2013). Due to the number of different DOE laboratories, analytical methods, and sample media used, the NURE-HSSR data from the western third of the United States have the largest number of inconsistencies and is the most difficult to use on a regional basis. This area contains several large mining districts and continues to be an area of exploration interest for undiscovered mineral resources.

The National Uranium Resource Evaluation (NURE) program was initiated by the Atomic Energy Commission (now the Department of Energy; DOE) in 1973 with a primary goal of identifying uranium resources in the United States. The Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program was one of nine components of NURE. Planned systematic sampling of stream sediments, soils, groundwater, and surface water over the entire United States began in 1975 under the responsibility of four DOE national laboratories: Lawrence Livermore Laboratory (LLL), Los Alamos Scientific Laboratory (LASL), Oak Ridge Gaseous Diffusion Plant (ORGDP), and Savannah River Laboratory (SRL). Each DOE laboratory developed its own sample collection, analytical, and data management methodologies and hired contractors to collect the samples. The NURE HSSR sampling program ended prematurely in 1980. The samples were analyzed and the resultant geochemical data were released on 9-track tapes and in a series of publications. By 1984, the NURE program was finished as Congressional funding disappeared. Out of a total of 625 2-degree quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled and another 86 quadrangles were partially sampled. The HSSR data consisted of 894 separate data files stored on magnetic tape in 47 different file formats. The University of Oklahoma's Information Systems Programs of the Energy Resources Institute (ISP) was contracted by the Department of Energy to enhance the accessibility and usefulness of the NURE HSSR data. ISP created a single standard-format master file to replace 894 original files. ISP converted only 817 of the 894 original files before their funding ended. Unfortunately, this conversion process was never completed and introduced several systematic errors into the database. In 1985, the NURE HSSR sample archive, original field maps, field notes, and data tapes became the responsibility of the U.S. Geological Survey (USGS). A copy of the ISP-formatted NURE HSSR database was released as two CD-ROM publications (Hoffman and Buttleman, 1994; 1996). A new effort to recompile the NURE HSSR was begun by the USGS in 1995. All of the original 894 files have been examined, reformatted, and added to this USGS enhanced version of the NURE HSSR data. The data are contained in 2 major database files: one for water samples and one for sediment samples (which also includes soil and some rock samples.) An earlier version of this USGS enhanced version of the NURE HSSR data was released as an online Open-File Report at http://pubs.usgs.gov/of/1997/ofr-97-0492/

--USGS: http://mrdata.usgs.gov/metadata/nurehssr.faq.html

Geochemistry of water samples in the US from the NURE-HSSR database Geochemical analyses of water samples throughout the U.S. collected by the hydrogeochemical and stream sediment reconnaissance (HSSR) phase of the National Uranium Resource Evaluation (NURE) program. This database contains 335,547 records.

Geochemistry of sediments in the US from the NURE-HSSR database: Geochemical analyses of sediment samples throughout the U.S. collected by the hydrogeochemical and stream sediment reconnaissance (HSSR) phase of the National Uranium Resource Evaluation (NURE) program. This database contains 397,625 records.

This CD presents maps derived from a subset of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) data. Approxiamately 260,000 samples were analyzed in the continental U.S. and consisted of solid samples, including stream, lake, pond, spring, and playa sediments, and soils. Data for eleven elements were analyzed and included on this release of the National Geochemical Atlas CD: Na, Ti, Fe, Cu, Zn, As, Ce, Hf, Pb, Th, and U. The National Uranium Resource Evaluation (NURE) program of the Department of Energy (DOE) collected a vast amount of chemical data on sediment, soil, and water samples from the United States in the late 1970's and early 1980's. This element of the NURE program was known as the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR). The NURE HSSR data have long been available to the public in a variety of formats, ranging from the original paper reports produced by the DOE (see Averett, 1984), to comprehensive digital releases on CD-ROM by the U.S. Geological Survey in the last few years (Hoffman and Buttleman, 1994; 1996), to digital releases on the Internet of reformatted and cleaned data (Smith, 1998). While these publications remain the best sources of the complete, primary data, and are accompanied by documentation of the sampling protocols, sample characteristics, and analytical methods, they are difficult to use for geochemical research, especially when the study area covers a wide area of the United States. This publication is intended to allow the rapid visualization of the geochemical landscape of the United States using the NURE HSSR data. Here, the user is relieved of the responsibility of selecting and processing the raw data; this was done in the preparation of the CD. A powerful geographic-information system (GIS) tool, the ArcView program of Environmental Systems Research Institute, Inc. (ESRI), is provided to allow one to probe and manipulate the processed NURE data. Within the ArcView environment, multiple presentations of the NURE are provided, ranging from color-coded point maps, to bitmap-images on a national scale, to interpreted maps based on geologic and hydrologic units. Because the NURE HSSR data have been processed by the author for the production of this CD, the user must use a degree of caution in interpreting the maps produced here, and in using the data files found on the disc. One must understand the methods used in deriving the data on this CD in order to judge the significance of any particular map or data feature. Fortunately, the raw data used in the production of this CD are available in digital form (Hoffman and Buttleman, 1996), for examination by sophisticated users.

The National Uranium Resource Evaluation (NURE) program began in 1973 with a primary goal of identifying uranium resources in the United States. As one of nine components of the NURE program, the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project systematically sampled the United States between 1976 and 1980 under the direction of four U.S. Department of Energy (DOE) national laboratories. Although there was some collaboration, each DOE laboratory developed its own sample collection, analytical, and data management methodologies, and hired contractors to do much of the actual work. Initially, Lawrence Livermore Laboratory (LLL) was responsible for the western states of Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington; Los Alamos Scientific Laboratory (LASL) was responsible for the Rocky Mountain States (Colorado, Montana, New Mexico, and Wyoming) as well as Alaska; the Oak Ridge Gaseous Diffusion Plant (ORGDP) was responsible for 12 central Plains and upper Great Lakes States; and Savannah River Laboratory (SRL) was responsible for the remaining 23 states along the Eastern Seaboard, lower Great Lakes, Appalachians, and Gulf Coast. However, by 1979 the areas of responsibility had changed from state lines to 2-degree quadrangle boundaries and SRL had taken over the responsibility for completing the seven western states formerly assigned to LLL. Thus quadrangles in the western third of the U.S. were variously sampled and analyzed by LLL, LASL, and SRL. Due to the enormous number of samples collected by these laboratories, some were also sent to ORGDP for additional chemical analyses (Information Systems Programs, 1985; Smith, 1997). Geochemical samples were collected from multiple sources (78 percent stream-, 8 percent lake-, and 2 percent spring-sediments, and 12 percent soils). Analytical methods differed between laboratories and evolved over time so that 29 single- and multi-element analytical procedures, or variations thereof, were used during the project. The NURE-HSSR sediment and soil database compiled by Smith (1997) provides analytical results for 54 different elements (Ag, Al, As, Au, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Eu, F, Fe, Hf, Hg, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Pt, Rb, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Th, Ti, U, V, W. Y, Yb, Zn, and Zr). Although no sample was analyzed for greater than 46 elements, some were analyzed uranium only, and a few samples were never analyzed at all. Funding cuts after 1980 curtailed the NURE-HSSR sampling efforts and left the project incomplete with only 65% coverage of the United States. The NURE program effectively ended about 1983-84. Out of a total of 625 quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled and another 86 quadrangles were partially sampled. In 1984, all of the NURE-HSSR data, maps, field notes, and archived samples splits were transferred (Grimes, 1984) to the U.S. Geological Survey (USGS). Despite inconsistencies in sample media, elements analyzed, and analytical methods used, the original data and, particularly data from reanalysis of archived NURE-HSSR samples have been very useful for a variety of USGS studies ranging from regional-scale mineral resource assessments to environmental investigations (Smith and others, 2013). Due to the number of different DOE laboratories, analytical methods, and sample media used, the NURE-HSSR data from the western third of the United States have the largest number of inconsistencies and is the most difficult to use on a regional basis. This area contains several large mining districts and continues to be an area of exploration interest for undiscovered mineral resources. Beginning in November of 2015, a project was undertaken to reanalyze approximately 60,000 archived NURE-HSSR sample splits from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A small amount (approximately 0.25 g) of sieved -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 ICPMS (ALS ME-MS61L) method (Ag, Al, As, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, In, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn, Hf_p, Zr_p, Au_sq, Pt_sq, Pd_sq). Blind standard reference materials (SRM), blanks, and sample duplicates were inserted by the USGS into every job of 36 samples to ensure the quality of the data. The results from these quality control (QC) samples, along with QC samples inserted by the laboratory, were evaluated for every job by a QC Manager. Only data that passed these checks were approved for release. Samples with analytical results that failed to pass the QC checks were reanalyzed and re-evaluated before the data were approved for release.

This data release includes estimates of potassium (K), equivalent uranium (eU), and equivalent thorium (eTh) for the conterminous United States derived from the U.S. Geological Survey's (USGS) national airborne radiometric data compilation (Duval and others, 2005). Airborne gamma ray spectrometry (AGRS) measures the gamma-rays that are emitted from naturally occurring radioactive isotopes found in rocks and soil, the most abundant of which are potassium (K40), uranium (U238), and thorium (Th232). Radiometric data can aid in exploration of critical mineral resources, including deposits of barium, fluorine, titanium, beryllium, niobium, rare-earth elements, and uranium. There is also growing interest in using radiometric data to map soil properties. The airborne radiometric data are an example of compositional data that are non-stationary (that is, the mean and the standard deviation vary spatially). It is therefore important to apply statistical techniques that account for both pro ...

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, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, In, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn, Zr). These data are comparable to those reported by Smith and others (2018, 2019). A subset of these samples, as identified by the collaborating party, was additionally analyzed by ALS Global laboratories for stable lead isotopes (204Pb, 206Pb, 207Pb, and 208Pb, using the MS61L-PbIS method). Blind standard reference materials (SRM) and sample duplicates were inserted by the USGS into every job of 36 samples to ensure the quality of the data. The results from these quality control (QC) samples, along with QC samples inserted by the laboratory, were evaluated for every job by a QC Manager. Only data that passed these checks were approved for release. Samples with analytical results that failed to pass the QC checks were reanalyzed and re-evaluated before the data were approved for release. The archived sample splits came from the NURE program, which began in 1973 with a primary goal of identifying uranium resources in the U.S. As one of nine components of the NURE program, the HSSR project systematically sampled the U.S. between 1976 and 1980 under the direction of four U.S. Department of Energy (DOE) national laboratories. Although there was some collaboration, each DOE laboratory developed its own sample collection, analytical, and data management methodologies, and hired contractors to do much of the actual work. Initially, Lawrence Livermore Laboratory (LLL) was responsible for the western states of Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington; Los Alamos Scientific Laboratory (LASL) was responsible for the Rocky Mountain States (Colorado, Montana, New Mexico, and Wyoming) as well as Alaska; the Oak Ridge Gaseous Diffusion Plant (ORGDP) was responsible for 12 central Plains and upper Great Lakes States; and Savannah River Laboratory (SRL) was responsible for the remaining 23 states along the Eastern Seaboard, lower Great Lakes, Appalachians, and Gulf Coast. However, by 1979 the areas of responsibility had changed from state lines to 2-degree quadrangle boundaries and SRL had taken over the responsibility for completing the seven western states formerly assigned to LLL. Thus, quadrangles in the western third of the U.S. were variously sampled and analyzed by LLL, LASL, and SRL. Due to the enormous number of samples collected by these laboratories, some were sent to ORGDP for additional chemical analyses (Information Systems Programs, 1985; Smith, 1997). Geochemical samples were collected from multiple sources (78 percent stream-, 8 percent lake-, and 2 percent spring-sediments, and 12 percent soils). Analytical methods differed between laboratories and evolved over time so that 29 single- and multi-element analytical procedures, or variations thereof, were used during the project. The NURE-HSSR sediment and soil database compiled by Smith (1997) provides analytical results for 54 different elements (Ag, Al, As, Au, B, Ba, Be, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Eu, F, Fe, Hf, Hg, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Pt, Rb, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Th, Ti, U, V, W, Y, Yb, Zn, and Zr). However, no sample was analyzed for more than 46 elements, some were analyzed for uranium only, and a few samples were never analyzed at all. Funding cuts after 1980 curtailed the NURE-HSSR sampling efforts and left the project incomplete with only 65% coverage of the U.S. The NURE program effectively ended about 1983-84. Out of a total of 625 quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled, and another 86 quadrangles were partially sampled. In 1984, all of the NURE-HSSR data, maps, field notes, and archived samples splits were transferred to the USGS (Grimes, 1984). Despite inconsistencies in sample media, elements analyzed, and analytical methods used, the original data, and particularly data from reanalysis of archived NURE-HSSR samples, have been very useful for a variety of USGS studies ranging from regional-scale mineral resource assessments to environmental investigations (Smith and others, 2013). Due to the number of different DOE laboratories, analytical methods, and sample media used, the NURE-HSSR data from the western third of the United States have the largest number of inconsistencies and are the most difficult to use on a regional basis. This area contains several large mining districts and continues to be an area of exploration interest for undiscovered mineral resources.

This report provides background information on the regional geochemical data provided by the US Geological Survey to the US Forest Service and Bureau of Land Management Interior Columbia Basin Ecosystem Management Project (ICBEMP). This report is one in a series of digital maps, data files, and reports generated by the US Geological Survey to provide geologic process and mineral resource information to the Interior Columbia Basin Ecosytem Management Project. The various digital maps and data files are being used in a GIS-based ecosystem assessment including an analysis of diverse questions relating to past, present, and future conditions within the general area of the Columbia River Basin east of the Cascade Mountains.

Data was compiled from published sources by US Geological Survey geoscientists Mark J. Mihalasky, Susan M. Hall and Robert A. Zielinski. This dataset was provided to the U.S. Energy Information Administration in February of 2019 to facilitate updating of national uranium resource distribution maps. The U.S. Department of Energy systematically assessed the uranium resource potential of the United States from 1974 to 1982 as part of the National Uranium Resource Evaluation (NURE) program. This layer shows areas that the NURE methodology considered favorable for uranium. For information about the methodology used to delineate these favorable areas as well as a description of relative favorability see: U.S. Department of Energy, 1980, An assessment report on uranium in the United States of America; U.S. Department of Energy, Grand Junction, Colorado, GJO-111(80), 1980. p. 148.The U.S. Geological Survey analyzed whether the NURE favorable areas identified in Texas accurately predicted the location of discrete uranium deposits. This study is: Review of the NURE assessment of the U.S. Gulf Coast Uranium Province, Natural Resources Research, v.22, issue 3, 18 p. and is available at: https://pubs.er.usgs.gov/publication/70121427

Open-file report detailing concentrations of Stream Sediment, Stream Water, and Groundwater for the Norfolk and Elizabeth City 30x60 - minute quadrangle

No Description Was Provided. Link Function: 375-- download.

No Description Was Provided. Link Function: 375-- download.

LandingPage. Link Function: 375-- download.

Open-file report detailing concentrations of Stream Sediment, Stream Water, and Groundwater for the Danville and Greensboro 30x60 - minute quadrangle. This resource is available through the North Carolina Geological Survey.

description: This report contains geochemical data gathered in the Ashland and Rice Lake 1 degree x 2 degree quadrangles in northern Wisconsin and adjacent parts of northern Michigan and Minnesota. The data, in part, is focused on the Chequamegon National Forest. Nine files are presented which contain more than 2,600 multi-element analyses of soils, stream sediments, and lake-bottom sediments. Data include a mixture of newly acquired data by the USGS and previously reported data from the National Uranium Resource Evaluation (NURE) program. The report thus provides a single-source summary in similar and consistent format of a majority of currently available analyses of surficial materials in this region. Files are presented in DBF format which can be readily imported to GIS programs such as Arcview, and as MS-Excel spreadsheets. The files include: >A_soil 326 analyses of A-horizon soils (new USGS data) >B_soil 44 analyses of B-horizon soils (new USGS data) >C_soil 455 analyses of C-horizon soils (new USGS data) >E_soil 35 analyses of E-horizon soils (new USGS data) >USGS_ls 96 analyses of lake-bottom sediments (new USGS data) >NURE_ls 361 analyses of lake-bottom sediments (NURE data) >NURE_original 913 analyses of stream sediments (NURE data) >NURE_rean 400 reanalyses of NURE stream sediments (new USGS data) >NUREss_adj 913 stream sediment analyses from the NURE data > recalculated based on comparison with NURE_rean results Together, these data serve to describe the complexity of the surficial geochemical landscape of the glaciated terranes of this part of the Lake Superior region. Both graphic displays, as in Arcview, and statistical analyses can be conducted to meet a variety of end-user needs and address a multitude of environmental and resource issues.; abstract: This report contains geochemical data gathered in the Ashland and Rice Lake 1 degree x 2 degree quadrangles in northern Wisconsin and adjacent parts of northern Michigan and Minnesota. The data, in part, is focused on the Chequamegon National Forest. Nine files are presented which contain more than 2,600 multi-element analyses of soils, stream sediments, and lake-bottom sediments. Data include a mixture of newly acquired data by the USGS and previously reported data from the National Uranium Resource Evaluation (NURE) program. The report thus provides a single-source summary in similar and consistent format of a majority of currently available analyses of surficial materials in this region. Files are presented in DBF format which can be readily imported to GIS programs such as Arcview, and as MS-Excel spreadsheets. The files include: >A_soil 326 analyses of A-horizon soils (new USGS data) >B_soil 44 analyses of B-horizon soils (new USGS data) >C_soil 455 analyses of C-horizon soils (new USGS data) >E_soil 35 analyses of E-horizon soils (new USGS data) >USGS_ls 96 analyses of lake-bottom sediments (new USGS data) >NURE_ls 361 analyses of lake-bottom sediments (NURE data) >NURE_original 913 analyses of stream sediments (NURE data) >NURE_rean 400 reanalyses of NURE stream sediments (new USGS data) >NUREss_adj 913 stream sediment analyses from the NURE data > recalculated based on comparison with NURE_rean results Together, these data serve to describe the complexity of the surficial geochemical landscape of the glaciated terranes of this part of the Lake Superior region. Both graphic displays, as in Arcview, and statistical analyses can be conducted to meet a variety of end-user needs and address a multitude of environmental and resource issues.

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Open-file report detailing concentrations of Stream Sediment, Stream Water, and Groundwater for the Wilmington and Cape Fear 30x60 - minute quadrangle

The Alaska Geochemical Database Version 4.0 (AGDB4) contains geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving efficiency of use. The relational database includes historical geochemical data archived in the USGS National Geochemical Database (NGDB), the Atomic Energy Commission National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance databases, and the Alaska Division of Geological and Geophysical Surveys (DGGS) Geochemistry database. Data from the U.S. Bureau of Mines and the U.S. Bureau of Land Management are included as well. The data tables describe historical and new quantitative and qualitative geochemical analyses. The analytical results were determined by 120 laboratory and field analytical methods performed on 416,333 rock, sediment, soil, mineral, heavy-mineral concentrate, and oxalic acid leachate samples. The samples were collected as part of various agency programs and projects from 1938 through 2021. Most samples were collected by agency personnel and analyzed in agency laboratories or under contracts in commercial analytical laboratories. Mineralogical data from 18,138 nonmagnetic heavy-mineral concentrate samples are also included in this database. The data in the AGDB4 supersede data in the AGDB, AGDB2, and AGDB3 databases but the background about the data in these earlier versions is needed to understand what has been done to amend, clean up, correct, and format these data. Data that were not included in previous versions because they predate the earliest agency geochemical databases or were excluded for programmatic reasons are included here in the AGDB4. The AGDB4 data are the most accurate and complete to date and should be useful for a wide variety of geochemical studies. They are provided as a Microsoft Access database, as comma-separated values (CSV), and as an Esri geodatabase consisting of point feature classes and related tables.