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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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Groundwater withdrawal estimates from 1913-2010 for the Death Valley regional groundwater flow system (DVRFS) are compiled in a Microsoft® Access database. This database updates two previously published databases (Moreo and others, 2003; Moreo and Justet, 2008). A total of about 38,000 acre-feet of groundwater was withdrawn from the DVRFS in 2010, of which 47 percent was used for irrigation, 22 percent for domestic, and 31 percent for public supply, commercial, and mining activities. The updated database was compiled to support ongoing efforts to model groundwater flow in the DVRFS. References cited: Moreo, M.T., Halford, K.J., La Camera, R.J., and Laczniak, R.J., 2003, Estimated ground-water withdrawals from the...
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View from Amphitheater Canyon across South Death Valley, showing characteristic outcrop of salt caliche marking bed of rock salt. San Bernardino County, California. n.d. Published as plate 6-B in U.S. Geoligical Survey. Bulletin 724. 1922.
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These geotiffs represent the raster GIS outputs of Linear Deconvolution (Linear Spectral Unmixing) analysis of ASTER image pixels covering various sand dune and sand sheet fields throughout the Western United States and Alaska. This particular dune field (DS-2) represents Big Dune, Nevada and the surrounding areas of alluvial fan sediments along the Amargosa River valley. The accompanying zip file contains linear deconvolution-derived mineral fractional abundance maps for a three-component mixture model of Quartz, Potassic Feldspars and "Andesitic Volcanic Glass", as well as RMS and residual errors. Each geotiff layer has an associated metadata file with further details.
Summary Carroll et al. (2009) state that the United States Geological Survey (USGS) Death Valley Regional Flow System (DVRFS) model, which is based on MODFLOW, is “conceptually inaccurate in that it models an unconfined aquifer as a confined system and does not simulate unconfined drawdown in transient pumping simulations.” Carroll et al. (2009) claim that “more realistic estimates of water availability” can be produced by a SURFACT-based model of the DVRFS that simulates unconfined groundwater flow and limits withdrawals from wells to avoid excessive drawdown. Differences in results from the original MODFLOW-based model and the SURFACT-based model stem primarily from application by Carroll et al. (2009) of head...
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These geotiffs represent the raster GIS outputs of Linear Deconvolution (Linear Spectral Unmixing) analysis of ASTER image pixels covering various sand dune and sand sheet fields throughout the Western United States and Alaska. This particular dune field (DS-2) represents Big Dune, Nevada and the surrounding areas of alluvial fan sediments along the Amargosa River valley. The accompanying zip file contains linear deconvolution-derived mineral fractional abundance maps for a two-component mixture model of Quartz, Potassic and Plagioclase Feldspars, as well as RMS and residual errors. Each geotiff layer has an associated metadata file with further details.
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The locations of principal faults and structural zones that may influence ground-water flow were compiled in support of a three-dimensional ground-water model for the Death Valley regional flow system (DVRFS), which covers 80,000 square km in southwestern Nevada and southeastern California. Faults include Neogene extensional and strike-slip faults and pre-Tertiary thrust faults. Emphasis was given to characteristics of faults and deformed zones that may have a high potential for influencing hydraulic conductivity. These include: (1) faulting that results in the juxtaposition of stratigraphic units with contrasting hydrologic properties, which may cause ground-water discharge and other perturbations in the flow system;...
Tags: 06027 = Inyo, 06029 = Kern, 06071 = San Bernardino, 32003 = Clark, 32009 = Esmeralda, All tags...
Aim A small fauna of amphibious snails (genus Assiminea Fleming, 1828) living in association with highly mineralized springs in the Death Valley?lower Colorado River region (DVLCR) is thought to be a relict of the Bouse Embayment, a putative late Miocene?early Pliocene transgression of the ancestral Gulf of California along the lower Colorado River valley. We analysed the phylogenetic relationships of this fauna using mtDNA sequence data (1171 bp) to determine whether, as would be consistent with this hypothesis, it forms a substantially divergent unit sister to marine coastal congeners. Location South-western Great Basin and lower Colorado River region, USA. Methods Two genes [mitochondrial cytochrome c oxidase...
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These geotiffs represent the raster GIS outputs of Linear Deconvolution (Linear Spectral Unmixing) analysis of ASTER image pixels covering various sand dune and sand sheet fields throughout the Western United States and Alaska. This particular dune field (DS-2) represents Big Dune, Nevada and the surrounding areas of alluvial fan sediments along the Amargosa River valley. The accompanying zip file contains linear deconvolution-derived mineral fractional abundance maps for a four-component mixture model of Quartz, Potassic Feldspar, Plagioclase Feldspar and Calcite, as well as RMS and residual errors. Each geotiff layer has an associated metadata file with further details.


    map background search result map search result map Aeromagnetic data for Amargosa-Death Valley, California Hydrostructural Maps of the Death Valley Regional Flow System, Nevada and California--Map A: Structural Framework, Neogene Basins, and Potentiometric Surface; Map B: Structural Framework, Earthquake Epicenters, and Potential Zones of Enhanced Hydraulic Conductivity Linear Deconvolution Results For Site DS-2 (3-component-model-1) Linear Deconvolution Results For Site DS-2 (3-component-model-2) Linear Deconvolution Results For Site DS-2 (4-component-model) Update to the groundwater withdrawals database for the Death Valley regional groundwater flow system, Nevada and California, 1913-2010 USGS 1:250000-scale Quadrangle for Death Valley, CA 1948 USGS 1:250000-scale Quadrangle for Death Valley, CA 1956 USGS 1:250000-scale Quadrangle for Death Valley, CA 1958 USGS 1:250000-scale Quadrangle for Death Valley, CA 1961 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1964 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1948 Linear Deconvolution Results For Site DS-2 (3-component-model-1) Linear Deconvolution Results For Site DS-2 (3-component-model-2) Linear Deconvolution Results For Site DS-2 (4-component-model) Aeromagnetic data for Amargosa-Death Valley, California USGS 1:250000-scale Quadrangle for Death Valley, CA 1948 USGS 1:250000-scale Quadrangle for Death Valley, CA 1956 USGS 1:250000-scale Quadrangle for Death Valley, CA 1958 USGS 1:250000-scale Quadrangle for Death Valley, CA 1961 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1964 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1954 USGS 1:250000-scale Quadrangle for Death Valley, CA 1948 Update to the groundwater withdrawals database for the Death Valley regional groundwater flow system, Nevada and California, 1913-2010 Hydrostructural Maps of the Death Valley Regional Flow System, Nevada and California--Map A: Structural Framework, Neogene Basins, and Potentiometric Surface; Map B: Structural Framework, Earthquake Epicenters, and Potential Zones of Enhanced Hydraulic Conductivity