Filters: Tags: bedrock (X) > Types: Downloadable (X)

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Geophysical Characteristics of the Conterminous United States: Hydraulic Conductivity (µm/s) This raster depicts the percentage of lithological the hydraulic conductivity (in micrometers per second) of surface or near surface geology. We derived these rasters by calculating the average conductivity for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: Bedrock, Conterminous U.S., Geology, Geophysical, hydraulic conductivity Denali Fault Zone Field, Microvein, and Microbeam Data, Kluane Ranges, Yukon, Canada Detailed geologic mapping and sample collection was conducted in rare bedrock exposures of the Denali fault zone during the summer months of 2013, 2014, and 2015 by the U.S. Geological Survey. Data include measurements of structural geologic orientations and documentation of fault zone and host rock characteristics. Representative samples were selected for measurements of fault vein attributes and electron backscatter diffraction studies to characterize deformation mechanisms. All station locations, pertinent sample information, and associated data are included in this data release. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bedrock, Canada, Denali fault, Fault rock, Faulting (geologic), All tags... Geologic structure, Geology, Geophysics, and Geochemistry Science Center (GGGSC), Mineral Resources Program (MRP), Structural Geology, Structural geology, USGS Science Data Catalog (SDC), Yukon Territory, geoscientificInformation, Fewer tags Bedrock contours underlying the alluvium of the Lower Arkansas River Valley, Southeast Colorado Contours (20-foot interval) showing altitude of the bedrock surface in feet above NGVD 29 underlying the alluvium in the Lower Arkansas River Valley, Southeast Colorado. Source contours scale was 1:62,500. All digitizing and geoprocessing was done using ArcGIS Desktop v10 (Environmental Systems Research Institute, 2011) Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas River, Bent County, Crowley County, Otero County, Prowers County, All tags... Pueblo County, bedrock, hydrogeology, Fewer tags Geochemical Characteristics of the Conterminous United States: % MgO This raster depicts the percentage of lithological magnesium oxide (MgO) content in surface or near surface geology. We derived these rasters by calculating the average percent MgO content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, Magnesium, All tags... MgO, Fewer tags Geophysical Characteristics of the Conterminous United States: Uniaxial Compressive Strength (MPa) This raster depicts the percentage of lithological the compressive strength, measured as uniaxial compressive strength (in megaPascals, MPa) of surface or near surface geology. We derived these rasters by calculating the average strength for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: Bedrock, Conterminous U.S., Geology, Geophysical, Rock Strength, All tags... UCS, Uniaxial Compressive Strength, Fewer tags Geochemical Characteristics of the Conterminous United States: % Al2O3 This raster depicts the percentage of lithological aluminum oxide (Al2O3) content in surface or near surface geology. We derived these rasters by calculating the average percent Al2O3 content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Al2O3, Aluminium, Bedrock, Conterminous U.S., Geochemistry, All tags... Geology, Fewer tags Sediment Volume and Bedrock of the Similkameen River Above Enloe Dam Near Oroville, Washington This data release contains 3-meter gridded rasters of depth to bedrock below bathymetric surface, the thickness of unconsolidated sediment, and the volume of unconsolidated sediment within a 2.6-km reach of the Similkameen River, Okanogan County, Washington, impounded by Enloe Dam. These rasters were calculated from continuous resistivity profiles (CRP) surveyed using a SuperSting R8 8-channel resistivity meter with a CRP streamer containing a 100-m long array of 11 electrodes was towed behind a boat spaced at 10 m. After collection, the raw CRP files were georeferenced to coordinates concurrently by a global positioning system. Output files were merged and linearized. This was converted to a data file compatible... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Enloe Dam, Hydrology, Similkameen River, USGS Science Data Catalog (SDC), bedrock Maine Geological Survey Field Photos Collection Collection of field photos taken by MGS geologists. Categories: Data, Image; Types: Collection, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bedrock, Field photos, Image, Maine, Mapping, All tags... Surficial, final, ndc_collection, Fewer tags Continuous Marine Seismic-Reflection Surveys and Derived Depth-to-Bedrock Point Data from the East River, New York City, New York This data release contains data from five seismic-reflection surveys in New York’s East River between Governors Island and the Queensboro Bridge. Data are provided in the original proprietary data format, a SEGy data exchange format, and as a shape file of locations and depths to bedrock. Depths to bedrock were derived from the seismic signal travel time and an assumed speed of sound of 5,000 feet/second. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Bedrock, East River, Geophysics, Kings County, All tags... New York, New York County, Seismic reflection methods, Surface Geophysics, USGS Science Data Catalog (SDC), USGS:636bfbe2d34ed907bf6abaa9, Fewer tags Geochemical Characteristics of the Conterminous United States: % Sulfur This raster depicts the percentage of lithological sulfur (S) content in surface or near surface geology. We derived these rasters by calculating the average percent S content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from Soller et al.... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, sulfur Geochemical Characteristics of the Conterminous United States: % Nitrogen This raster depicts the percentage of lithological nitrogen (N) content in surface or near surface geology. We derived these rasters by calculating the average percent N content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from Soller et... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, nitrogen Geospatial datasets of regolith thickness, bedrock altitude, depth to water, potentiometric-surface altitude, and saturated thickness for the shallow groundwater system in the Lower Gunnison River Basin, Delta, Montrose, Ouray, and Gunnison Counties, Colorado Thirteen geospatial datasets were developed to characterize the shallow groundwater system in the Lower Gunnison River Basin, Colorado. These geospatial datasets provide information about regolith thickness and altitude of the bedrock surface underlying regolith and display, in vector and raster formats, the generalized extent and thickness of regolith sediments that comprise the shallow groundwater system in the Lower Gunnison River Basin; display, in raster and vector format, the generalized altitude and configuration of the bedrock surface that comprises the base of the shallow groundwater system in the Lower Gunnison River Basin; provide information about depth to water, altitude of the potentiometric surface,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Delta, Gunnison, Hydrogeology, Montrose, Colo., All tags... Ouray, Structural Geology, USGS Science Data Catalog (SDC), Uncompahgre, Water Resources, aquifer, bedrock, boundary, depth to water, extent, geology, geoscientificInformation, groundwater, hydrogeology, hydrology, inlandWaters, potentiometric surface, regolith, saturated thickness, sediments, water level, water table, Fewer tags Selected geologic data for the shallow groundwater system in the Lower Gunnison River Basin, Colorado This point dataset contains geologic information concerning regolith thickness and top-of-bedrock altitude at selected well and test-hole locations in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Regolith-thickness data were compiled from lithologic logs of wells and boreholes reported by the Colorado Division of Water Resources, U.S. Geological Survey, and Bureau of Reclamation. Bedrock-altitude values were computed from the bedrock altitude raster dataset (bralt). The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Delta, Gunnison, Montrose, Ouray, All tags... Uncompahgre, aquifer, bedrock, geology, groundwater, hydrogeology, inlandWaters, regolith, sediments, Fewer tags Geochemical Characteristics of the Conterminous United States: % P2O5 This raster depicts the percentage of lithological phosphorus pentoxide (P2O5) content in surface or near surface geology. We derived these rasters by calculating the average percent P2O5 content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, P2O5, All tags... Phosphorus, Fewer tags Geochemical Characteristics of the Conterminous United States: % SiO2 This raster depicts the percentage of lithological silicon dioxide (SiO2) content in surface or near surface geology. We derived these rasters by calculating the average percent SiO2 content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, SiO2, All tags... Silica, Fewer tags Geochemical Characteristics of the Conterminous United States: % CaO This raster depicts the percentage of lithological calcium oxide (CaO) content in surface or near surface geology. We derived these rasters by calculating the average percent CaO content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, CaO, Calcium, Conterminous U.S., Geochemistry, All tags... Geology, Fewer tags Geochemical Characteristics of the Conterminous United States: % Na2O This raster depicts the percentage of lithological sodium oxide (Na2O) content in surface or near surface geology. We derived these rasters by calculating the average percent Na2O content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from... Categories: Data, Map; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, GeoTIFF, Map Service; Tags: Bedrock, Conterminous U.S., Geochemistry, Geology, Na2O, All tags... Sodium, Fewer tags Horizontal-to-Vertical Spectral Ratio Soundings and Depth-to-Bedrock Data for New York City and Long Island, NY From March 2019 to September 2020, the U.S. Geological Survey, in cooperation with the New York City Department of Design and Construction and the New York State Department of Environmental Conservation, collected horizontal-to-vertical seismic (HVSR) surveys at 140 locations in New York, Bronx, Queens, Nassau, and Suffolk counties to estimate the thickness of unconsolidated sediments and the depth to bedrock (Lane and others, 2008). The passive-seismic method uses a single, broad-band three-component (two horizontal and one vertical) seismometer to record ambient seismic noise. In areas that have a strong acoustic contrast between the bedrock and overlying sediments, the seismic noise induces resonance at frequencies... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquifer Mapping, Basin & Hydrogeologic Characterization, Bedrock, Bronx County, Nassau County, All tags... New York, New York City, New York County, Queens County, Seismology, Suffolk County, USGS Science Data Catalog (SDC), United States, Water Use and Availability Science, Fewer tags Exposed Precambrian Bedrock in Part of Dickinson County, Michigan, and Marinette and Florence Counties, Wisconsin The U.S. Geological Survey conducted a program of bedrock geologic mapping in much of the central and western upper peninsula of Michigan and parts of Wisconsin from the 1940’s until the late 1990’s. Geologic studies in this region are hampered by a scarcity of bedrock exposures because of a nearly continuous blanket of unconsolidated sediments resulting from glaciation of the region during the Pleistocene ice ages. The USGS mapping, done largely at a scale of 1:24,000, routinely recorded the location and extent of exposed bedrock to provide both an indication of where direct observations were made, and as a guide for future investigations to expedite location of observable rock exposures. The locations of outcrops... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Dickinson County, Michigan, Florence County, Wisconsin, Marinette County, Wisconsin, Mineralogy, North America, All tags... USGS Science Data Catalog (SDC), United States of America, bedrock, geology, outcrops, Fewer tags Bedrock-altitude contours for the base of the shallow groundwater system in the Lower Gunnison River Basin, Colorado This dataset consists of contours showing the altitude of the top surface of well-consolidated bedrock at the base of the shallow groundwater system in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Bedrock altitude was contoured from values in the raster dataset bralt. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Delta, Gunnison, Montrose, Ouray, All tags... Uncompahgre, aquifer, bedrock, geology, geoscientificInformation, groundwater, hydrogeology, inlandWaters, inlandWaters, Fewer tags 1 2 »