Geographic areas
National and global databases
Additional studies and data
- Time-domain electromagnetic soundings near Antioch, Illinois,and Berrien Springs, Michigan [New Window]
- Study to help constrain 3-dimensional geologic maps of surficial materials in these glacial deposits
- Preliminary integrated geologic map databases for the United States: Digital data for the generalized bedrock geologic map, Yukon Flats region, east-central Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Geophysical surveys of Bear Lake, Utah-Idaho, September, 2002 [New Window]
- Detailed bathymetry, lake-floor acoustic imaging, and sample characteristics to infer bottom sediment characteristics.
- Geology and mineral deposits of the Keweenaw Peninsula and vicinity, Michigan [New Window]
- Geospatial data and tabular data on the geology, structure, mines and mineral deposits, including lithology, age, tectonic setting, and stratigraphy.
- Chemical Composition of Samples Collected from Waste Rock Dumps and Other Mining-Related Features at Selected Phosphate Mines in Southeastern Idaho, Western Wyoming, and Northern Utah [New Window]
- Chemical analyses for 31 samples collected from various phosphate mine sites in southeastern Idaho (25), northern Utah (2), and western Wyoming (4)
- Digital database of mining-related features at selected historic and active phosphate mines, Bannock, Bear Lake, Bingham, and Caribou Counties, Idaho [New Window]
- Spatial database that delineates mining-related features in areas of historic and active phosphate mining.
- Spatial database of mining-related features in 2001 at selected phosphate mines, Bannock, Bear Lake, Bingham, and Caribou Counties, Idaho [New Window]
- Features include mine pit; backfilled mine pit; waste rock dump; adit and waste rock dump; ore stockpile; topsoil stockpile; tailings or tailings pond; sediment catchment; facilities; road; railroad; water reservoir; disturbed land, undifferentiated; and
- Multielement geochemical dataset of surficial materials for the northern Great Basin [New Window]
- Geochemical data generated during mineral and environmental assessments for the Bureau of Land Management in northern Nevada, northeastern California, southeastern Oregon, and southwestern Idaho.
- Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' x 60' quadrangles, Wisconsin and Michigan [New Window]
- Geologic units and structural features, GIS data files
- Aeromagnetic and gravity maps of the central Marysvale volcanic field, southwestern Utah [New Window]
- Maps (no data) depicting aeromagnetic and Bouguer gravity anomaly in the study area. Report discusses rock sample density and magnetic properties, but data are buried in PDF tables.
- Geophysical data from the Spring and Snake Valleys area, Nevada and Utah [New Window]
- Existing and new gravity station data and magnetometer measurements used to infer geologic structure of this area
- Available sand and gravel resources in southern New Hampshire [New Window]
- Estimates thickness of sand and gravel resources available in this broad area using geology, topography, land cover, and ground-water level.
- Aerial magnetic, electromagnetic, and gamma-ray survey, Berrien County, Michigan [New Window]
- CD-ROM containing maps, grids, and flight-line databases of a detailed aerial survey and maps and grids of satellite data
- Description of digital aeromagnetic data collected north and west of Albuquerque, New Mexico [New Window]
- Grids and images depicting the data
- Merged digital aeromagnetic data for the middle Rio Grande and southern Española Basins, New Mexico [New Window]
- Gridded data and images
- Principal facts for gravity data collected in the southern Albuquerque Basin area and a regional compilation, central New Mexico [New Window]
- New data incorporated with existing data complete overall coverage of the basin, one of the largest associated with the Rio Grande rift.
- Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell-Saint Elias National Park and Preserve, Alaska [New Window]
- GIS dataset for 'Geologic map of the Wrangell-Saint Elias National Park and Preserve, Alaska' USGS SIM 2877. The map area includes high mountains, active and ancient volcanoes, expansive ice fields, and alpine and tidewater glaciers.
- Geochemical analysis of soils and sediments, Coeur d'Alene drainage basin, Idaho: Sampling, analytical methods, and results [New Window]
- Chemical composition of sediments and soils are of interest because of the potential for human and wildlife health impacts from high metal contents due to over 100 years of mining activity.
- Puget Sound (Washington) aeromagnetic maps and data [New Window]
- Gridded data and maps for individual quadrangles and for the entire compilation
- Estimated gravel resources of the Soucook River valley, Loudon, New Hampshire, 7.5' Quadrangle using improved techniques for assessing gravel resources in glaciofluvial deposits [New Window]
- Images and text from a poster session (Geological Society of America Northeastern Section) showing methodology and results for an example
- Arkansas geologic map data [New Window]
- A GIS database of geologic units and structural features in Arkansas, with lithology, age, data structure, and format written and arranged just like the other states.
- Arkansas and Louisiana aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Arkansas and Louisiana, merged to form seamless grids across the states. Gravity anomaly data are provided as well.
- Integrated investigations of environmental effects of historical mining in the Animas River watershed, San Juan county, Colorado [New Window]
- Major assessment of the environmental effects of historical mining in the Animas River watershed with GIS data files, tables, and plates.
- Net acid production, acid neutralizing capacity, and associated geophysical, mineralogical, and geochemical characteristics of Animas River watershed rocks near Silverton, Colorado [New Window]
- Geochemical analysis of rock samples focusing on characteristics relevant to mine cleanup discussions
- Chemistry of stream sediments and surface waters in New England [New Window]
- Regional data for pH, alkalinity, and specific conductance for stream waters and a multi-element geochemical dataset for stream sediments collected in the New England.
- Digital data for the geology of the Prince William Sound and Kenai Peninsula region, Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Magnetic susceptibilities measured on rocks of the Upper Cook Inlet, Alaska [New Window]
- Analysis of rock samples, with photos of sample localities
- Principal facts for 408 gravity stations in the vicinity of the Talkeetna Mountains, south-central Alaska [New Window]
- Data collected as part of a geological and geophysical framework study
- Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska [New Window]
- Gridded data from aeromagnetic surveys
- Geologic map of central (interior) Alaska [New Window]
- Geologic map and associated digital databases of central Alaska. Compilation and reinterpretation of previously published and unpublished mapping at 1:250,000 scale, with limited 1:125,000 and 1:63,360 scale mapping.
- Candidate-penetrative-fracture mapping of the Grand Canyon area, Arizona, from spatial correlation of deep geophysical features and surficial lineaments [New Window]
- Includes a wide variety of geological and geophysical data: geologic, aeromagnetic, and gravity maps with SLAR, DEM, TM, and NDVI imagery.
- Mineral resource potential and geology of the Routt National Forest and the Middle Park Ranger district of the Arapaho National Forest, Colorado [New Window]
- Report describing interpretations of geological, geophysical, and mineral resource data, with some maps as figures in the report.
- Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality [New Window]
- Geochemical analysis of mine dumps, mill tailings, mine drainage, and surface waters indicate contamination from these historic mines is generally less than that asserted or suggested by some geochemical models
- Preliminary integrated geologic map databases for the United States: Montana, Wyoming, Colorado, New Mexico, Kansas, Oklahoma, Texas, Missouri, Arkansas, and Louisiana [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Arizona geologic map data [New Window]
- A GIS database of geologic units and structural features in Arizona, with lithology, age, data structure, and format written and arranged just like the other states.
- Reported historic asbestos mines, historic asbestos prospects, and natural asbestos occurrences in the southwestern United States (Arizona, Nevada, and Utah) [New Window]
- Map and data tables show location, mineralogy, geology, and relevant literature for each mine, prospect, or occurrence
- Geophysical terranes of the Great Basin and parts of surrounding provinces [New Window]
- A set of geophysical maps with anomalies that are labeled and keyed to tables containing information on each anomaly and its source.
- Arizona aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Arizona, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Preliminary integrated geologic map databases for the United States: California, Nevada, Arizona, Washington, Oregon, Idaho, and Utah [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Mining claim activity on Federal lands for the period 1976 through 2005 [New Window]
- Number and type of mine claims located on Federal lands and registered with the Bureau of Land Management, by year from 1976 through 2005.
- Alaska resource data file: Arctic quadrangle [New Window]
- Descriptions of mines, prospects, and mineral occurrences in the Arctic quadrangle, Alaska
- Bedrock geologic map of the Port Wing, Solon Springs, and parts of the Duluth and Sandstone 30' x 60' quadrangles, Wisconsin [New Window]
- This Report provides digital data (shapefiles and .e00 files) for the bedrock geology in the Port Wing, Solon Springs, and parts of the Duluth and Sandstone quadrangles in Wisconsin.
- Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island and Vermont [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Digital geologic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California, revision 4 [New Window]
- GIS data for geologic units and structural features, with aeromagnetic and gravity maps in PDF
- Six aeromagnetic surveys in Nevada and California [New Window]
- Gridded data for aeromagnetic surveys with contractors' reports describing the data collection
- Principal facts for gravity stations in the vicinity of Coyote Spring valley, Nevada, with initial gravity modeling results [New Window]
- Gravity study to help define the shapes of young basins filled with Cenozoic rocks and alluvium, and to identify any possible faults within these basins that might influence the movement of groundwater.
- Geochemical analyses of geologic materials from areas of critical environmental concern, Clark and Nye counties, Nevada [New Window]
- Results of analysis in tabular form
- Seven aeromagnetic surveys in California and Nevada [New Window]
- Grid and flight-line data files provided by the geophysical survey contractors.
- Geophysical framework of the southwestern Nevada volcanic field and hydrogeologic implications [New Window]
- Report describing detailed interpretation of geophysical survey data to draw inferences about subsurface geologic features and likely consequences for the hydrogeologic system.
- Principal facts for gravity stations and physical property measurements in the Lake Mead 30'x60' quadrangle, Nevada and Arizona [New Window]
- Gravity data were collected in support of geologic mapping of the quadrangle. In addition, older gravity data were reprocessed for consistency and included, as well as 250 measurements of density and magnetic susceptibility.
- Geologic and geophysical maps of the Death Valley ground-water model area, Nevada and California [New Window]
- Maps and geospatial data for (a) geology; (b) tectonics; (c) isostatic gravity anomaly; (d) aeromagnetic anomaly; (e) depth to pre-Cenozoic basement.
- Results of gravity fieldwork conducted in March 2008 in the Moapa Valley region of Clark County, Nevada [New Window]
- Study aids understanding of local geologic structure and ground-water flow, includes principal facts for 266 gravity stations and physical properties of representative rock samples.
- Spatial digital database for the tectonic map of southeast Arizona [New Window]
- Geologic map GIS which represents the original content of the published geologic map and which can be queried in many ways to produce a variety of geologic maps and derivative products.
- An interpretation of the 1996 aeromagnetic data for the Santa Cruz basin, Tumacacori Mountains, Santa Rita Mountains, and Patagonia Mountains, South-Central Arizona [New Window]
- Measurements of in-situ magnetic properties of several map units to determined whether or not mapped lithologies were responsible for aeromagnetic anomalies observed in a previous high-resolution survey (data of Sweeney, 2000).
- New England states aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of New England, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
- Mercury release from the Rathburn Mine, Petray Mine, and Bear Valley saline springs, Colusa County, California 2004-2006 [New Window]
- Summary of data obtained from field sampling of mine tailings and waste rock and water and sediment in regional springs and tributaries that drain from the mine area into Bear Creek. Ground-water springs are also potential sources of mercury here.
- Colorado geologic map data [New Window]
- A GIS database of geologic units and structural features in Colorado, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary Precambrian basement map of Colorado - A Geologic Interpretation of the Aeromagnetic Anomaly Map [New Window]
- Synopsis of geological processes that formed the basement structure of Colorado, drawing on interpretation of regional aeromagnetic data
- Colorado aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Colorado, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona [New Window]
- Grids and flight-line magnetic and conductivity data
- Spatial Digital Database of the Geologic Map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona [New Window]
- Geologic map information in GIS formats
- Processing and interpretation of aeromagnetic data for the Santa Cruz basin - Patagonia Mountains Area, South-Central Arizona [New Window]
- Description of methods by which high-resolution aeromagnetic data were interpreted for geological studies.
- Isostatic gravity map of the Las Vegas 30'x60' quadrangle, California and Nevada [New Window]
- Includes principal facts (gravity observations) for 2,506 stations.
- A helicopter-borne magnetic survey over Dixie Valley geothermal field, Nevada [New Window]
- Gridded data from helicopter study of shallow geologic structures
- Geophysical interpretations of the Libby Thrust Belt, Northwestern Montana [New Window]
- Report using gravity anomaly data with seismic profile and magnetotelluric data to infer deep geologic structure.
- Stratabound copper-silver deposits of the Mesoproterozoic Revett Formation, Montana and Idaho with a section on databases and spatial-data files for the geology and mineral deposits of the Revett Formation [New Window]
- Includes deposits, occurrences, and prospects; drill core logs and measured sections; and spatial databases for geologic maps, untested exploration areas, and permissive tracts for undiscovered mineral deposits.
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the lower Yukon River region, Alaska [New Window]
- Reconnaissance geologic map of the lower Yukon River region in southwest Alaska includes Quaternary surficial deposits on the delta plain and bedrock exposures in mountains within the delta plain and the uplands that border the delta plain.
- Geologic field notes, geochemical analyses, and field photographs of outcrops and rock samples from the Big Delta B-1 quadrangle, east-central Alaska [New Window]
- Major element oxide and trace element geochemical analyses, including those for gold, silver, and base metals, for representative rock units and for grab samples from quartz veins and mineralized zones within the quadrangle
- Quality of water and sediment in streams affected by historical mining, and quality of mine tailings, in the Rio Grande/Río Bravo basin, Big Bend area of the United States and Mexico, August 2002 [New Window]
- Geochemical data for stream water, sediments, and mine tailings in this area
- Aerial gamma-ray, Landsat TM, and digital elevation data, Big Bend area, Texas [New Window]
- This report presents the results of analyses and interpretation of aerial gamma-ray, Landsat TM, geologic, and digital elevation data of the Big Bend area in Texas.
- Gravity map and data of the eastern half of the Big Bear Lake, 100,000 scale quadrangle, California, and analysis of the depths of several basins [New Window]
- Data on the southern portion of the Marine Corps Air Ground Combat Center (MCAGCC) Twentynine Palms and the Yucca Valley-Joshua Tree-Twentynine Palms area and presents the map and basin analyses.
- Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas [New Window]
- Grids, images, and flight-line paths for magnetic and resistivity surveys
- Isotopic ages of rocks in the northern Front Range, Colorado [New Window]
- Maps, tables, and GIS data for isotopic ages determined in the northern part of the study area.
- Uranium in surface waters and sediments affected by historical mining in the Denver West 1:100,000 quadrangle, Colorado [New Window]
- Geochemical analysis of stream waters and sediments in mountainous areas immediately west of Denver, Colorado, to evaluate the concentration and distribution of uranium-bearing acid drainage originating from historical mines
- Preliminary integrated geologic map databases for the United States: Digital data for the geology of southeast Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Preliminary geologic map of the Chugach National Forest special study area, Alaska [New Window]
- Map at 1:63,360 scale shows the bedrock geology of a special study area within the Chugach National Forest, Alaska. Includes ARC/Info export files and graphics.
- Resource potential and geology of the Grand Mesa, Uncompahgre, and Gunnison (GMUG) National Forests and vicinity, Colorado [New Window]
- Multi-chapter report combining geologic, geochemical, geophysical, and mining activity data. Downloadable data for coal resource information only.
- Helicopter electromagnetic and magnetic geophysical survey data, Oakland, Ashland, and Firth study areas, eastern Nebraska, March 2007 [New Window]
- Electrical resistivity depicted in georeferenced grids and maps, representing different approximate depths of investigation for each area. The range of subsurface investigation is comparable to the depth of shallow aquifers.
- Gravity investigations of the Chickasaw National Recreation Area, south-central Oklahoma [New Window]
- Gravity anomaly with physical property measurements in support of structural geologic investigation
- Aerial gamma-ray survey for parts of Cameron, Hildalgo, and Willacy Counties, Texas [New Window]
- The USGS had an aerial survey flown over parts of Cameron, Hidalgo, and Willacy Counties in Texas. The aerial survey included measurements of the earth's magnetic field and of the radioactivity of the surface rocks and soils.
- California geologic map data [New Window]
- A GIS database of geologic units and structural features in California, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary aeromagnetic anomaly map of California [New Window]
- Map showing magnetic anomaly of California composed by merging and editing data from 123 distinct surveys conducted previously.
- Aeromagnetic survey of Dillingham Area in Southwest Alaska [New Window]
- Gridded survey data with summary map images.
- Preliminary grid data and maps for an aeromagnetic survey of the Taylor Mountains quadrangle and a portion of the Bethel quadrangle, Alaska [New Window]
- Preliminary data (grids and images) and maps for a new aeromagnetic survey
- Principal facts for gravity data along the Hayward fault and vicinity, San Francisco Bay area, northern California [New Window]
- Data and associated physical property measurements were collected as part of on-going studies to help determine the earthquake hazard potential of major faults within the San Francisco Bay region
- Digital data for the geologic framework of the Alaska Peninsula, southwest Alaska, and the Alaska Peninsula Terrane [New Window]
- Geospatial data sets of the geology of the Alaska Peninsula, Alaska, including a geologic map and complete unit descriptions.
- Gamma-ray, magnetic, and topographic data for parts of the Colorado Front Range [New Window]
- Five geospatial grids from the NURE surveys, showing potassium, uranium, and thorium concentration, residual magnetic field, and digital elevation.
- Digital geologic map of the Rosalia 1:100,000 quadrangle, Washington and Idaho: A digital database for the 1990 S.Z. Waggoner map [New Window]
- Geoloic units and structural features
- Guide to geophysical data for the northern Rocky Mountains and adjacent areas, Idaho, Montana, Washington, Oregon, and Wyoming [New Window]
- Mathematical analysis of gravity and aeromagnetic data, with basic and derived grids and vector data and maps.
- Potential mineral resources, Payette National Forest, Idaho; description and probabilistic estimation [New Window]
- Permissive tracts for a variety of types of mineral deposits, with information about deposits that have already been mined.
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the western Aleutian Islands, Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Alaska resource data file: Adak quadrangle [New Window]
- Descriptions of mines, prospects, and mineral occurrences in the Adak quadrangle, Alaska
- Relational database for the geology of the northern Rocky Mountains; Idaho, Montana, and Washington [New Window]
- Geologic map unit and lithologic descriptions used in Open File Report 2005-1235, with extensive bibliographic references to geologic literature that could not be included in the spatial database.
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Kodiak Islands, Alaska [New Window]
- The Kodiak Islands are located on the west side of the Gulf of Alaska and one of the largest areas of exposure of the flysch and melange of the Chugach terrane of southern Alaska.
- Preliminary integrated geologic map databases for the United States: Alabama, Florida, Georgia, Mississippi, North Carolina, and South Carolina [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Data base for undiscovered deposits of base and precious metals [New Window]
- Probabilistic estimates of the amounts of undiscovered gold, silver, copper, lead, and zinc in conventional types of mineral deposits in the United States.
- Alabama geologic map data [New Window]
- A GIS database of geologic units and structural features in Alabama, with lithology, age, data structure, and format written and arranged just like the other states.
- Geological map data [New Window]
- Characteristics of bedrock and surficial geologic terranes and structural features at various levels of detail. The information provided here are intended for use in the synoptic study of large areas, and are likely not suitable for detailed study of geog
- Precambrian basement structure map of the continental United States-an interpretation of geologic and aeromagnetic data [New Window]
- Principal basement structures formed during the Precambrian in the continental United States based on interpretation of regional aeromagnetic anomaly data of North America.
- Element concentrations in soils and other surficial materials of the conterminous United States [New Window]
- Geochemistry of soils and other regoliths collected and analyzed from 1958 until about 1976
- Digitized Aeromagnetic Datasets for the Conterminous United States, Hawaii, and Puerto Rico [New Window]
- Aeromagnetic anomaly values digitized from older surveys
- Pan-American Center for Earth and Environmental Studies (PACES) gravity data portal [New Window]
- Digital Aeromagnetic Datasets for the Conterminous United States and Hawaii - A Companion to the North American Magnetic Anomaly Map [New Window]
- Digital and analog archives comprising more than 1,000 surveys, covering approximately 8,000,000 line-km of data, flown at various flight heights and line spacings
- Spatial databases for the geology of the Northern Rocky Mountains - Idaho, Montana, and Washington [New Window]
- The spatial databases represent the original content of 43 published geologic maps, provide normalized map unit descriptions, and provide additional information and interpretation not in the original reports.
- Online files for acid deposition sensitivity map [New Window]
- GIS data files Acid Deposition Sensitivity of the Southern Appalachian Assessment Area. Susceptibility to acid deposition from air pollution is categorized as low, medium, or high for each area.
- Bouguer gravity anomaly grid for the conterminous US [New Window]
- Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the Bouguer gravity anomaly for the conterminous US.
- Geochemical landscape of the conterminous US: maps of NURE-HSSR data [New Window]
- Maps derived from a subset of the National Uranium Resource Evaluation Hydrogeochemical and Stream Sediment Reconnaissance data. Samples are from streams, lakes, ponds, springs, playas, and soils. Includes Na, Ti, Fe, Cu, Zn, As, Ce, Hf, Pb, Th, and U.
- Value of mineral production by state in the US [New Window]
- The value of mineral production by state in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the U.S. Geological Survey.
- Geology of the conterminous United States [New Window]
- A digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It excludes Alaska and Hawaii.
- Isostatic residual gravity anomaly grid for the conterminous US [New Window]
- Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the isostatic residual gravity anomaly for the conterminous US.
- Bedrock and soil geochemistry from Voyageurs National Park, Minnesota [New Window]
- Analyses to establish the background and baseline geochemistry for bedrock and soil in the region, and to determine terrestrial mercury sources and sinks in the park
- 1998 Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States [New Window]
- Estimates of the tonnages and amounts of contained metal in undiscovered deposits, mineral deposit types.
- National geophysical data grids; gamma-ray, gravity, magnetic, and topographic data for the conterminous United States [New Window]
- Gridded geophysical data in a variety of formats.
- Profiles of gamma-ray and magnetic data from aerial surveys over the conterminous United States [New Window]
- Set of 3 CD-ROMs containing data in custom formats that can be converted or viewed only with the supplied software which was designed only for DOS, Windows 3.1, or Windows 95
- National geochemical survey database [New Window]
- National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.
- Terrestrial radioactivity and gamma-ray exposure in the United States and Canada [New Window]
- Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units. Covers the conterminous United States, southeaste
- Preliminary Integrated Geologic Map Databases for the United States: Digital data for the geology of the southern Brooks Range, Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Geologic map of the Umiat quadrangle, Alaska [New Window]
- Geologic map of the Umiat quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
- Geologic map of the Ikpikpuk River quadrangle, Alaska [New Window]
- Geologic map of the Ikpikpuk quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
- Engineering geologic maps of northern Alaska, Harrison Bay quadrangle [New Window]
- Map and report on the surficial deposits and bedrock of the onshore part of the Harrison Bay quadrangle, Alaska. The map area is located within the Arctic Coastal Plain and in the northeastern part of the National Petroleum Reserve of Alaska (NPRA).
- Geologic and fossil locality maps of the west-central part of the Howard Pass quadrangle and part of the adjacent Misheguk Mountain quadrangle, western Brooks Range, Alaska [New Window]
- This publication includes a bedrock geologic map depicting the complex allochthonous structure of an area along the north flank of the west-central Brooks Range. A compilation of new and previously reported macro- and micro-fossil identifications and a
- Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska [New Window]
- Map, report, and geospatial data on the geology of the northeastern part of the 1:250,000 scale Dillingham quadrangle, Alaska. Includes Ar40/39 radiometric ages, geologic unit descriptions, and correlation of map units.
- Surficial geologic map of parts of the Misheguk Mountain and Baird Mountains quadrangles, Noatak National Preserve, Alaska [New Window]
- Surficial geologic map of part of the Noatak River drainage system in the western Brooks Range, Alaska. Primary surficial units are late Quaternary glacial, glacio-lacustrine, and fluvial deposits. Map and report include radiocarbon dates, geologic unit
- Surficial geologic map of the Hughes quadrangle, Alaska [New Window]
- A 1:250,000 scale surficial geologic map of the Hughes quadrangle, Alaska, which extends into the southern Brooks Range and the uplands and valleys of interior Alaska. The map includes glacial history, geologic unit descriptions, and a correlation of map
- Surficial geologic map of the Bettles quadrangle, Alaska [New Window]
- The Bettles quadrangle includes part of the southern Brooks Range and uplands and valleys of interior Alaska. This map depicts the surficial geology and glacial history, and includes description of map units and a correlation of map units.
- Geologic map of the Lookout Ridge quadrangle, Alaska [New Window]
- Geologic map of the Lookout Ridge quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
- Geologic map of the Utukok River quadrangle, Alaska [New Window]
- Geologic map of the Utukok River quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
- Geologic map of the Point Lay quadrangle, Alaska [New Window]
- Geologic map of the Point Lay quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
- Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes project pilot study [New Window]
- Regional-scale geochemical survey designed to serve as a baseline for further analyses, and to understand effects of historical mining in the area.
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for the Kuskokwim Bay region of southwest Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Compilation of Alaska gravity data and historical reports [New Window]
- Gravity measured from 1958-2005, with standard gravity reduction calculations applied to correct for latitude, elevation, topography, and isostasy.
- Alaska geologic map data [New Window]
- A GIS database of geologic units and structural features in Alaska, with lithology, age, data structure, and format written and arranged just like the other states.
- Geologic map of the Big Delta B-2 quadrangle, east-central Alaska [New Window]
- Geologic map of the Big Delta B-2 quadrangle, including U-Pb geochronology, correlation chart, and description of map units.
- Geologic map of the Big Delta B-1 quadrangle, east-central Alaska [New Window]
- Geologic mapping and U-Pb age dating of the Big Delta B-1 quadrangle provides insights into the geology and gold mineralization of the headwater region of the Goodpaster River.
- Geologic map of the Wrangell-Saint Elias National Park and Preserve, Alaska [New Window]
- Reconnaissance geologic map of the largest National Park in the US. Map area includes high mountains, active and ancient volcanoes, expansive ice fields, and alpine and tidewater glaciers. Kennecott Mine, a world-class copper deposit is located in the p
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Yukon-Koyukuk Basin, Alaska [New Window]
- Reconnaissance geologic map of the Yukon-Koyukuk basin, Alaska, which is a region characterized by isolated hilly areas and low mountain ranges, separated by broad alluviated interior and coastal lowlands.
- GIS coverages of the Castle Mountain fault, south central Alaska [New Window]
- The Castle Mountain fault is a major east-northeast striking fault in southern Alaska with historic seismicity and Holocene surface faulting. This data set is a compilation of fault segments from several publications.
- Geologic map of the Christian quadrangle, Alaska [New Window]
- Geology of the Christian quadrangle in the Porcupine Plateau, southern Brooks Range, and Yukon Flats. Includes geologic map, fossil data, location of oil shale, and geospatial data sets.
- Aeromagnetic data for Alaska [New Window]
- Data from 85 individual aeromagnetic surveys were merged together to produce a single data grid spanning much of Alaska.
- Generalized thermal maturity map of Alaska [New Window]
- Data derived from the 1996 "Generalized Thermal Maturity Map of Alaska" compiled by M.J. Johnsson and D.G. Howell, published in USGS Bulletin 2142. Combines vitrinite reflectance and conodont alteration index in generalized units.
- Sedimentary basins of Alaska [New Window]
- Data derived from the 1994 "Map showing Sedimentary Basins in Alaska" by C.E. Kirschner. This map is Plate 7 in Volume G-1: "The Geology of Alaska", published by GSA.
- Geologic map of Alaska [New Window]
- Data derived from the 1980 Geologic Map of Alaska compiled by H.M. Beikman and published by the USGS. The map is a regional summary of geologic formations and units at 1:2,500,000 scale. Does not include faults, volcanoes, or correlation chart.
- Cretaceous magmatic rocks of Alaska [New Window]
- Data derived from the 1994 map "Latest Cretaceous and Cenozoic magmatic rocks of Alaska" compiled by E.J. Moll-Stalcup, D.A. Brew, and T.L. Vallier, published (at 1:2,500,000 scale) in volume G-1 of "The Geology of Alaska" (GSA)
- Magnetotelluric data, San Luis Valley, Colorado [New Window]
- Data from an electromagnetic survey conducted as part of a larger effort to understand the hydrogeologic character of a rapidly-developing area.
- Magnetotelluric data, southern San Luis valley, Colorado [New Window]
- Data from an electromagnetic survey conducted as part of a larger effort to understand the hydrogeologic character of a rapidly-developing area.
- Digital aeromagnetic data and derivative products from a helicopter survey over the town of Blanca and surrounding areas, Alamosa and Costilla Counties, Colorado [New Window]
- Flight-line data, grids, and images derived from them
- Aeroradiometric data for Alaska [New Window]
- Data generated by aerial sensing of radiation emanating from the earth's surface in Alaska provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units throughout this area.
- Surficial geologic map of the Castle Mountain fault between Houston and Hatcher Pass Road, Alaska [New Window]
- A surficial geologic map showing the location of the Castle Mountain fault and other active or potentially active faults in the Matanuska-Susitna borough.
- Alaska aeromagnetic compilation; digital grids and survey data [New Window]
- Building a magnetic view of Alaska [New Window]
- Presentation materials from a series of talks, reports, and maps created between 1992 and 1999 describing work to edit, document, distribute, and interpret about a million line-kilometers of aeromagnetic data in Alaska
- Whole Rock Geochemical Data For Altered And Mineralized Rocks, Red Dog Zn-Pb-Ag District, Western Brooks Range, Alaska [New Window]
- This report presents geochemical analyses for 220 mostly altered and mineralized rock samples from the Red Dog Zn-Pb-Ag district in the western Brooks Range of northern Alaska.
- Whole Rock Geochemical Data For Paleozoic Sedimentary Rocks of the Western Brooks Range, Alaska [New Window]
- This report presents geochemical analyses for 210 unaltered and unmineralized rock samples of Paleozoic age in the western Brooks Range of northern Alaska.
- Merged aeroradiometric data for Alaska [New Window]
- Gridded data from aeroradiometric surveys of Alaska.
- Alaska digital aeromagnetic database description [New Window]
- Basic aeromagnetic data and other airborne survey information for any region of Alaska. Flight-line point information, not grids.
- Mine claim density for Alaska [New Window]
- Non-surveyed boundaries of active federal mining claims in Alaska. Each mining claim is represented as an individual region, identified by the casefile serial number which can be linked to background data via the Alaska Land Information System
- Digital data and derivative products from a high-resolution aeromagnetic survey of the central San Luis basin, covering parts of Alamosa, Conejos, Costilla, and Rio Grande Counties, Colorado, and Taos County, New Mexico [New Window]
- Digital data, image files, and text files describing data formats and survey procedures for aeromagnetic data collected during a high-resolution aeromagnetic survey in southern Colorado and northern New Mexico during October, 2004
- Connecticut geologic map data [New Window]
- A GIS database of geologic units and structural features in Connecticut, with lithology, age, data structure, and format written and arranged just like the other states.
- Aeromagnetic interpretations for understanding the hydrogeologic framework of the southern Española Basin, New Mexico [New Window]
- Analysis of geophysical data, inferring geologic structure of the study area
- A dataset of magnetic susceptibility, metalization, and alteration for samples from the Stinkingwater mining district, Absaroka Mountains, Wyoming [New Window]
- Magnetic susceptibility measured for 700 samples of drill core from thirteen drill holes in the porphyry copper-molybdenum deposit of the Stinkingwater mining district in the Absaroka Mountains, Wyoming
- Oregon geologic map data [New Window]
- A GIS database of geologic units and structural features in Oregon, with lithology, age, data structure, and format written and arranged just like the other states.
- Oregon magnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Oregon, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Surface-water hydrology and quality at the Pike Hill Superfund Site, Corinth, Vermont, October 2004 to December 2005 [New Window]
- Synoptic water-quality and benthic macroinvertebrate sampling at 14 stream sites to characterize the quality of surface water in the watershed on a seasonal and spatial basis, as well as to assess the effects of wetlands on water quality.
- Geochemical Characterization of Mine Waste, Mine Drainage, and Stream Sediments at the Pike Hill Copper Mine Superfund Site, Orange County, Vermont: U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency [New Window]
- Sampling procedures, analytical methodologies, and results to assess the potential for mine waste and drainage to have an adverse impact on aquatic ecosystems, on drinking- water supplies, and to human health
- Geochemical characterization of mine waste at the Ely Copper Mine superfund site, Orange County, Vermont [New Window]
- An environmental impact study is done for the abandoned Ely copper mine. The extent of contamination is studyed along with the type and chemical composition of the mine waste piles.
- Oklahoma geologic map data [New Window]
- A GIS database of geologic units and structural features in Oklahoma, with lithology, age, data structure, and format written and arranged just like the other states.
- Ohio geologic map data [New Window]
- A GIS database of geologic units and structural features in Ohio, with lithology, age, data structure, and format written and arranged just like the other states.
- Pennsylvania geologic map data [New Window]
- A GIS database of geologic units and structural features in Pennsylvania, with lithology, age, data structure, and format written and arranged just like the other states.
- Geologic interpretation of aeromagnetic maps in the Santa Cruz basin - Patagonia Mountains area, south-central Arizona [New Window]
- Map images of aeromagnetic data, with geological interpretations superimposed. Data provided in a different publication (OFR 00-155)
- Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona [New Window]
- Gravity station data and hand-held magnetometer measurements with analysis and description of methodology
- Thickness of Santa Fe group sediments in the Española Basin south of Santa Fe, New Mexico, as estimated from aeromagnetic data [New Window]
- Interpretation of aeromagnetic data, with geologic structure, to infer thickness and estimate capacity of an aquifer.
- Net acid production, acid neutralizing capacity, and associated mineralogical and geochemical characteristics of Animas River watershed igneous rocks near Silverton, Colorado [New Window]
- Chemical analysis of altered volcanic rocks to determine their potential for neutralization of acid-rock drainage. Includes magnetic susceptibility measurements as well.
- Environmental effects of historical mining in the Animas River watershed, southwestern Colorado [New Window]
- General description, with a few maps, of USGS environmental monitoring in an area affected by abandoned mines
- Principal facts for gravity stations in the vicinity of San Bernardino, southern California [New Window]
- Gravity measurements collected to help define the characteristics of the Rialto-Colton fault, with rock properties such as lithology, magnetic susceptibility and density.
- Rhode Island geologic map data [New Window]
- A GIS database of geologic units and structural features in Rhode Island, with lithology, age, data structure, and format written and arranged just like the other states.
- A ground electromagnetic survey used to map sulfides and acid sulfate ground waters at the Abandoned Cabin Branch Mine, Prince William Forest Park, northern Virginia gold-pyrite belt [New Window]
- A map of the soil conductivity derived from the survey to provide insight into the distribution of the mobilized sulfides present under the ground.
- Results of electrical resistivity data collected near the town of Guernsey, Platte county, Wyoming [New Window]
- A study to investigate subsurface geologic conditions as they relate to ground-water flow in an abandoned landfill.
- Three aeromagnetic surveys in south central Arizona [New Window]
- Grids and flight-line data for the surveys of this area
- Ohio complete bouguer gravity anomaly grid [New Window]
- Ohio magnetic anomaly grid at flight altitude of 1000 feet above ground [New Window]
- Modeling of the Climax Stock and related plutons based on the inversion of magnetic data, southwest Nevada [New Window]
- Mathematical modeling, coupled with new observations of magnetic susceptibility, yield better estimates of the underground configuration of granite plutons.
- A preliminary investigation of the structure of southern Yucca Flat, Massachusetts Mountain, and CP basin, Nevada Test Site, Nevada, based on geophysical modeling [New Window]
- Maps showing aeromagnetic survey results, locations of gravity station data, and discussions of processing within the report
- High-angle faults in the basement of Yucca Flats, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface [New Window]
- A fault map and digital fault dataset were constructed based on offsets of the basement surface. Because these faults are, in large part, not present at the surface, they are interpreted to be inactive faults, older than the alluvial basin fill.
- Nevada geologic map data [New Window]
- A GIS database of geologic units and structural features in Nevada, with lithology, age, data structure, and format written and arranged just like the other states.
- Gravity map of Nevada [New Window]
- Gravity observations throughout Nevada combined to provide a consistent collection of point measurements and generate maps.
- Nevada magnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Nevada, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
- Nebraska geologic map data [New Window]
- A GIS database of geologic units and structural features in Nebraska, with lithology, age, data structure, and format written and arranged just like the other states.
- Basement geophysical interpretation of the National Petroleum Reserve Alaska (NPRA), northern Alaska [New Window]
- Preliminary gravity inversion model of Frenchman Flat Basin, Nevada Test Site, Nevada [New Window]
- Provides data for the depth below the land surface,in meters, of the modeled location of the Pre-Tertiary basement surface.
- New Hampshire geologic map data [New Window]
- A GIS database of geologic units and structural features in New Hampshire, with lithology, age, data structure, and format written and arranged just like the other states.
- New Jersey aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of New Jersey, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Revised digital aeromagnetic data for areas in and adjacent to the National Petroleum Reserve Area (NPRA), North Slope, Alaska [New Window]
- Redigitized and corrected data from a previously published study
- North Dakota geologic map data [New Window]
- A GIS database of geologic units and structural features in North Dakota, with lithology, age, data structure, and format written and arranged just like the other states.
- North Dakota aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of North Dakota, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- North Carolina geologic map data [New Window]
- A GIS database of geologic units and structural features in North Carolina, with lithology, age, data structure, and format written and arranged just like the other states.
- New York geologic map data [New Window]
- A GIS database of geologic units and structural features in New York, with lithology, age, data structure, and format written and arranged just like the other states.
- New Mexico geologic map data [New Window]
- A GIS database of geologic units and structural features in New Mexico, with lithology, age, data structure, and format written and arranged just like the other states.
- New Mexico aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of New Mexico, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- New Jersey geologic map data [New Window]
- A GIS database of geologic units and structural features in New Jersey, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary isostatic gravity map of the Sonoma Volcanic field and vicinity, Sonoma and Napa counties, California [New Window]
- Gravity station data from three separate surveys
- Aeromagnetic surveys in Yukon Flats Alaska [New Window]
- Flight-line data from the aeromagnetic survey
- Geophysical investigations of the Smoke Creek Desert and their geologic implications, northwest Nevada and northeast California [New Window]
- Gravity and aeromagnetic data analysis described in a report, with a few physical property analyses
- Gravity, magnetic, and physical property data in the Smoke Creek Desert area, Northwest Nevada [New Window]
- Aerial, truck-towed, and hand-held magnetometer measurements, gravity station data, and sample density and magnetic susceptibility measures
- Washington geologic map data [New Window]
- A GIS database of geologic units and structural features in Washington, with lithology, age, data structure, and format written and arranged just like the other states.
- Washington aeromagnetic maps and data: [New Window]
- Aeromagnetic surveys of Washington state, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Virginia geologic map data [New Window]
- A GIS database of geologic units and structural features in Virginia, with lithology, age, data structure, and format written and arranged just like the other states.
- Virginia aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Virginia, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
- Vermont geologic map data [New Window]
- A GIS database of geologic units and structural features in Vermont, with lithology, age, data structure, and format written and arranged just like the other states.
- Chemical data for rock, sediment, biological, precipitate, and water samples from abandoned copper mines in Prince William Sound, Alaska [New Window]
- Report containing tables of geochemical data
- Principal facts for gravity stations in the Antelope Valley-Bedell Flat area, west-central Nevada [New Window]
- Physical property data for selected rock samples accompany these gravity observations
- Magnetic and gravity anomaly maps of West Virginia [New Window]
- Aeromagnetic surveys of West Virginia, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- West Virginia geologic map data [New Window]
- A GIS database of geologic units and structural features in West Virginia, with lithology, age, data structure, and format written and arranged just like the other states.
- Wyoming geologic map data [New Window]
- A GIS database of geologic units and structural features in Wyoming, with lithology, age, data structure, and format written and arranged just like the other states.
- Wyoming aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Wyoming, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Reconnaissance geologic map of the Duncan Canal/Zarembo Island area, southeastern Alaska [New Window]
- Updated bedrock geologic mapping of the area incorporating a recent airborne geophysical survey, new field work, fossils, radiometric ages, and geochemical signatures. Includes GIS data.
- Wisconsin geologic map data [New Window]
- A GIS database of geologic units and structural features in Wisconsin, with lithology, age, data structure, and format written and arranged just like the other states.
- Aeromagnetic surveying in Wisconsin 1977-98 [New Window]
- Wisconsin aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Wisconsin, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Principal facts for gravity data collected in Wisconsin [New Window]
- Gravity anomaly surveys of Wisconsin, both separately by survey and combined.
- Gravity data from Newark Valley, White Pine county, Nevada [New Window]
- Gravity station data, isostatic anomaly map, and depth to basement map derived from geophysical inverse modeling.
- Utah geologic map data [New Window]
- A GIS database of geologic units and structural features in Utah, with lithology, age, data structure, and format written and arranged just like the other states.
- Utah aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Utah, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- South Dakota geologic map data [New Window]
- A GIS database of geologic units and structural features in South Dakota, with lithology, age, data structure, and format written and arranged just like the other states.
- Principal facts for gravity data collected in South Dakota [New Window]
- Gravity anomaly measurements throughout the state
- South Dakota aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of South Dakota, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- South Carolina geologic map data [New Window]
- A GIS database of geologic units and structural features in South Carolina, with lithology, age, data structure, and format written and arranged just like the other states.
- A Geochemical Atlas of South Carolina--An Example Using Data from the National Geochemical Survey [New Window]
- National Geochemical Survey data from stream-sediment and soil samples, which have been analyzed using consistent methods, were used to create maps, graphs, and tables that characterizes the distribution of major and trace chemical elements in South Carol
- South Carolina aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of South Carolina, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
- Field demonstrations of five geophysical methods that could be used to characterize deposits of alluvial aggregate [New Window]
- Data from seismic reflection and refraction, electromagnetic sounding, and resistivity profiling in a study area in Indiana. Exact location is not provided.
- Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek area, Shasta County, California; report of investigations, 2001-2003 [New Window]
- Total mercury and methylmercury measured in sediments, tailings, and water in an area where historical gold mining has occurred; proposed habitat restoration work may release some of the mercury that is currently buried there.
- Geochemical data for stream-sediment, surface-water, rock, and vegetation samples from Red Mountain (Dry Creek), an unmined volcanogenic massive sulfide deposit in the Bonnifield district, Alaska Range, east-central Alaska [New Window]
- Geochemical data for stream sediment, surface-water, rock, precipitate, and vegetation samples from Red Mountain
- Geochemical and mineralogical characterization of the abandoned Valzinco (lead-zinc) and Mitchell (gold) mine sites prior to reclamation, Spotsylvania County, Virginia [New Window]
- Geochemical data for all solid sample media, along with mineralogical data, and results of weathering experiments on Valzinco tailings and field experiments on sediment accumulation in Knights Branch.
- Geochemical characterization of drainage prior to reclamation at the abandoned Valzinco mine, Spotsylvania County, Virginia [New Window]
- Geochemical analysis of water samples to provide a pre-reclamation assessment of seasonal variations of acid and metal concentrations in Knight's Branch help evaluate the reclamation project.
- Texas geologic map data [New Window]
- A GIS database of geologic units and structural features in Texas, with lithology, age, data structure, and format written and arranged just like the other states.
- Texas magnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Texas, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
- Tennessee geologic map data [New Window]
- A GIS database of geologic units and structural features in Tennessee, with lithology, age, data structure, and format written and arranged just like the other states.
- Aeromagnetic survey of Taylor Mountains area in southwest Alaska [New Window]
- Map and flight-line data, with documentation of the survey
- Digital aeromagnetic data and derivative products from a helicopter survey over the town of Taos and surrounding areas, Taos County, New Mexico. [New Window]
- Flight-line data, grids, and images derived from them
- Digital data from the Taos West aeromagnetic survey in Taos county, New Mexico [New Window]
- Digital data, image files, and text files describing data formats and survey procedures for an aeromagnetic survey covering the southwestern portion of Taos County west of the Town of Taos, New Mexico, conducted in October, 2006
- Chromite deposits in central part of the Stillwater Complex, Sweet Grass County, Montana: A digital database for the geologic map of the east slope of Iron Mountain [New Window]
- Geologic map digitized from a paper copy of plate 10 from USGS Bulletin 1015-D (Howland, 1955)
- Determination of premining geochemical background and delineation of extent of sediment contamination in Blue Creek downstream from Midnite Mine, Stevens county, Washington [New Window]
- Geochemical and radionuclide analyses of surface samples and cores taken near the outflow of this old uranium mine.
- Geologic and geophysical framework of the Santa Rosa 7.5' quadrangle, Sonoma county, California [New Window]
- Geologic units, structural features, magnetic and gravity anomaly contours and radiometric ages of this area
- Ground geophysical study of the Buckeye Mine Tailings, Boulder watershed, Montana [New Window]
- Electromagnetic, resistivity, and magnetic surveys used to determine the extent of contamination in an abandoned mine area.
- Illinois, Indiana, and Ohio magnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Illinois, Indiana, and Ohio, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Preliminary integrated geologic map databases for the United States; Minnesota, Wisconsin, Michigan, Illinois, and Indiana [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Idaho geologic map data [New Window]
- A GIS database of geologic units and structural features in Idaho, with lithology, age, data structure, and format written and arranged just like the other states.
- Aeromagnetic map for the state of Idaho [New Window]
- Aeromagnetic surveys of Idaho, merged to form seamless grids across the state. Data provided in a variety of formats.
- Principal facts for gravity profiles collected near the Osgood Mountains and the Slumbering Hills, north-central Nevada [New Window]
- Gravity station data for several surveys of this area.
- Gravity and magnetic data along a seismic refraction-reflection line in northwest Nevada and northeast California [New Window]
- Report with gravity station data in a spreadsheet
- Hawai`i geologic map data [New Window]
- A GIS database of geologic units and structural features in Hawai`i, with lithology, age, data structure, and format written and arranged just like the other states.
- Sequential extraction results and mineralogy of mine waste and stream sediments associated with metal mines in Vermont, Maine, and New Zealand [New Window]
- Results from sequential extraction experiments and the quantitative mineralogy for samples of stream sediments and mine wastes collected from metal mines.
- Illinois geologic map data [New Window]
- A GIS database of geologic units and structural features in Illinois, with lithology, age, data structure, and format written and arranged just like the other states.
- Indiana geologic map data [New Window]
- A GIS database of geologic units and structural features in Indiana, with lithology, age, data structure, and format written and arranged just like the other states.
- Gravity and ground magnetic data from selected traverses in the Amargosa desert and vicinity, Nevada and California [New Window]
- Maps of aeromagnetic data and a table of gravity station data now available for download
- Integrated investigations of environmental effects of historical mining in the Basin and Boulder mining districts, Boulder River watershed, Jefferson County, Montana [New Window]
- Bedrock soil and lichen geochemistry from Isle Royale National Park, Michigan [New Window]
- Geochemical analyses conducted as part of a larger study of the Midcontinent Rift in the Lake Superior region.
- The Cottage Lake aeromagnetic lineament: A possible onshore extension of the southern Whidbey Island fault, Washington [New Window]
- Use of aeromagnetic, lidar, and borehole data to infer the deep structure of a potentially active fault near Seattle
- Iowa geologic map data [New Window]
- A GIS database of geologic units and structural features in Iowa, with lithology, age, data structure, and format written and arranged just like the other states.
- Iowa magnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Iowa, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Summary of geophysical investigations of the Death Valley regional water-flow modeling project, Nevada and California [New Window]
- Magnetic and gravity anomaly and structure contour data
- Aeromagnetic expression of buried basaltic volcanoes near Yucca Mountain, Nevada [New Window]
- Mathematical modeling and analysis of aeromagnetic anomaly data (gridded data provide in another report).
- Ground-magnetic studies of the Amargosa desert region, California and Nevada [New Window]
- Hand-held magnetometer and sample magnetic susceptibility measurements used to help interpret complex patterns in the magnetic anomaly of this area.
- Geochronology and geology of late Oligocene through Miocene volcanism and mineralization in the western San Juan mountains, Colorado [New Window]
- New age determinations with descriptions of sample locations and analytical details.
- Hydrogeochemical investigation of the Standard Mine vicinity, upper Elk Creek basin, Colorado [New Window]
- Ground- and surface-water samples were collected in order to characterize the local ground-water flow system, determine metal concentrations in local ground water, and understand factors controlling the discharge of metal-rich waters from the mine.
- Geologic maps and block diagrams of the Barite Hill gold-silver deposit and vicinity, South Carolina and Georgia [New Window]
- The Barite Hill deposit was mined from 1990 to 1994, and, during this time, approximately 1,835,000 grams of gold and 3,390,280 grams of silver were produced.
- Major- and trace-element concentrations in rock samples collected in 2006 from the Taylor mountains 1:250,000-scale quadrangle, Alaska [New Window]
- 138 rock geochemistry samples collected during the 2006 field season were analyzed using the ICP-AES/MS42, ICP-AES10, fire assay, and cold vapor atomic absorption methods
- Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance bedrock geologic map for the northern Alaska peninsula area, southwest Alaska [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Major- and trace-element concentrations in soils from two geochemical surveys (1972 and 2005) of the Denver, Colorado, metropolitan area [New Window]
- Analyses of about 900 samples by ICP-MS, ICP-AES, and hydride generation-atomic absorption spectrometry. The samples collected in 2005 were also analyzed by a cold vapor-atomic absorption method for mercury.
- Delaware geologic map data [New Window]
- A GIS database of geologic units and structural features in Delaware, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary integrated geologic map databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Aeromagnetic survey of the Amargosa desert, Nevada and California [New Window]
- Grid data files along with maps in PDF and PostScript accompany this report
- Case study of the environmental signature of a recently abandoned, carbonate-hosted replacement deposit: The Clayton Mine, Idaho [New Window]
- Multi-element geochemical analysis of host rock, ore, mine waste, flotation-mill tailings, slag, stream sediments, creek and adit waters, and leachates of mine waste and mill tailings.
- Six aeromagnetic surveys in California, Nevada, and Arizona [New Window]
- Grid and flight-line data files provided to USGS by contract geophysical surveyors
- Helicopter electromagnetic data from Everglades National Park and surrounding areas, Florida, collected 9-14 December 1994 [New Window]
- Survey to determine location of the freshwater-saltwater boundary in a coastal area.
- Florida geologic map data [New Window]
- A GIS database of geologic units and structural features in Florida, with lithology, age, data structure, and format written and arranged just like the other states.
- Presentation showing results of a hydrogeochemical investigation of the Standard Mine vicinity, upper Elk Creek Basin, Colorado [New Window]
- Presentation provided to assist EPA with environmental remediation
- Geologic and aeromagnetic maps of the Fossil Ridge area and vicinity, Gunnison County, Colorado [New Window]
- Geologic units, structural features, and aeromagnetic anomaly map of the area
- Density and magnetic susceptibility values for rocks in the Talkeetna mountains and adjacent region, south-central Alaska [New Window]
- A compilation and statistical analysis of 306 density and 706 magnetic susceptibility measurements of rocks from south-central Alaska
- Gravity study of the Guernsey landfill site, Guernsey, Wyoming [New Window]
- Gravity measurements and surveyed topography data
- Georgia geologic map data [New Window]
- A GIS database of geologic units and structural features in Georgia, with lithology, age, data structure, and format written and arranged just like the other states.
- Georgia aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Georgia, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- An aeromagnetic survey in Yellowstone National Park [New Window]
- Grids of total magnetic intensity for the park
- Helicopter electromagnetic and magnetic survey maps and data, East Poplar oil field area, August 2004, Fort Peck Indian Reservation, northeastern Montana [New Window]
- Grids, line data, and imagery derived from them covering the small study area.
- Digital data from the Questa-San Luis and Santa Fe East helicopter magnetic surveys in Santa Fe and Taos Counties, New Mexico, and Costilla County, Colorado [New Window]
- Aeromagnetic data collected during an airborne geophysical survey.
- Montana geologic map data [New Window]
- A GIS database of geologic units and structural features in Montana, with lithology, age, data structure, and format written and arranged just like the other states.
- Isostatic gravity map of the Monterey 30'x60' quadrangle and adjacent areas, California [New Window]
- Gravity measurements to support regional mapping and hydrologic studies
- Three-dimensional geologic model of complex fault structures in the upper Seco Creek area, Medina and Uvalde counties, south-central Texas [New Window]
- Data sets include drill-hole from core and geophysical logs, surface geology and elevation, and helicopter electromagnetic survey data. The model may be explored and .jpg or .tiff images or using specialized software provided.
- Distribution of igneous rocks in Medina and Uvalde counties, Texas, as inferred from aeromagnetic data [New Window]
- High resolution aeromagnetic survey used to infer the locations of igneous rock bodies in the area, which are provided in GIS data files
- Aeromagnetic survey of Medina and Uvalde Counties, Texas [New Window]
- Flight-line data, flight-line and aeromagnetic anomaly map images
- Helicopter electromagnetic and magnetic survey data and maps, Seco Creek area, Medina and Uvalde Counties, Texas [New Window]
- Airborne geophysical data and a summary of the hydrologic application.
- Principal facts for 463 gravity stations in the vicinity of Tangle Lakes, east-central Alaska [New Window]
- New gravity stations combined here with older measurements taken by other USGS survey trips
- Massachusetts geologic map data [New Window]
- A GIS database of geologic units and structural features in Massachusetts, with lithology, age, data structure, and format written and arranged just like the other states.
- Maryland geologic map data [New Window]
- A GIS database of geologic units and structural features in Maryland, with lithology, age, data structure, and format written and arranged just like the other states.
- Application of ground penetrating radar to estimate sand and gravel resources near Bow, southern New Hampshire [New Window]
- Includes application-specific radar data files.
- Potential for new nickel-copper sulfide deposits in the Lake Superior region [New Window]
- Explains what these deposits are, where the occur and why, and why they are likely to be important
- Michigan geologic map data [New Window]
- A GIS database of geologic units and structural features in Michigan, with lithology, age, data structure, and format written and arranged just like the other states.
- Precambrian basement geologic map of Montana--An interpretation of aeromagnetic anomalies [New Window]
- Geologic map showing the structure and history of the basement rocks of Montana. Most of the state is covered by Phanerozoic bedrock units; the underlying basement structure must be inferred from magnetic anomaly data combined with geologic observations.
- Montana aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Montana, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Ground magnetic data from within the Long Valley Caldera, California [New Window]
- Results of a detailed ground magnetic survey
- Gravity and magnetic data in the vicinity of Virgin Valley, southern Nevada [New Window]
- Field measurements: 548 gravity and 6484 magnetic anomaly locations, data in fixed-format text files.
- Missouri geologic map data [New Window]
- A GIS database of geologic units and structural features in Missouri, with lithology, age, data structure, and format written and arranged just like the other states.
- Missouri aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Missouri, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
- Mississippi geologic map data [New Window]
- A GIS database of geologic units and structural features in Mississippi, with lithology, age, data structure, and format written and arranged just like the other states.
- Minnesota geologic map data [New Window]
- A GIS database of geologic units and structural features in Minnesota, with lithology, age, data structure, and format written and arranged just like the other states.
- Lithogeochemical character of near-surface bedrock in the New England coastal basins [New Window]
- Re-classification of geologic units according to their geochemical properties
- Maine geologic map data [New Window]
- A GIS database of geologic units and structural features in Maine, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary gravity and magnetic data of the Lake Pillsbury northern Coast Ranges, California [New Window]
- Report with excel tables showing principal facts (gravity observation data) and ground magnetic data.
- Digital map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene river valley, Idaho [New Window]
- Details of materials and geologic environments in an area where a long history of mining has enriched stream sediments in silver, lead, zinc, arsenic, antimony and mercury, copper, cadmium, manganese, and iron.
- Bedrock geology and mineral resources of the Knoxville 1° x 2° quadrangle, Tennessee, North Carolina, and South Carolina [New Window]
- Digital format for the map plate in Bulletin 1979 (Robinson et al., 1991),Bedrock Geology and Mineral Resources of the Knoxville 1°x2° Quadrangle, Tennessee, North Carolina, and South Carolina.
- Kentucky geologic map data [New Window]
- A GIS database of geologic units and structural features in Kentucky, with lithology, age, data structure, and format written and arranged just like the other states.
- Preliminary integrated geologic map databases for the United States: Kentucky, Ohio, Tennessee, and West Virginia [New Window]
- Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
- Kansas geologic map data [New Window]
- A GIS database of geologic units and structural features in Kansas, with lithology, age, data structure, and format written and arranged just like the other states.
- Nebraska, Kansas, and Oklahoma aeromagnetic and gravity maps and data [New Window]
- Aeromagnetic surveys of Nebraska, Kansas, and Oklahoma, merged to form seamless grids across the states. Gravity anomaly data are provided as well.
- Preliminary isostatic gravity map of Joshua Tree National Park and vicinity, southern California [New Window]
- Map with excel tables showing principal facts (gravity observation data).
- Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975 [New Window]
- Gravity map and data used to infer details of the geologic structure of the area. Surveys were conducted during or prior to 1975.
- Principal facts for gravity stations in the Dry Valley area, West-Central Nevada and east-central California [New Window]
- Gravity measurements used for determining geologic structure to aid in understanding ground-water flow
- High resolution, low altitude aeromagnetic and electromagnetic survey of Mount Rainier [New Window]
- Flight-line and gridded data, with description of methodology and interpretation
- Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins [New Window]
- Geochemical data for groundwater from a variety of geologic settings.
- Louisiana geologic map data [New Window]
- A GIS database of geologic units and structural features in Louisiana, with lithology, age, data structure, and format written and arranged just like the other states.
- Isostatic gravity map with geology of the Santa Ana 30'x60' quadrangle, southern California [New Window]
- Contour map of isostatic gravity anomaly with bedrock geology, and principal facts for the gravity stations as a separate data file.
- Preliminary potential-field constraints on the geometry of the San Fernando basin, southern California [New Window]
- Results of mathematical modeling of gravity and magnetic anomaly data to infer the geologic structure of the area
- Gravity data along LARSE (Los Angeles Regional Seismic Experiment) line 2, southern California [New Window]
- Data taken across the San Fernando Basin and Transverse Ranges to help characterize the structure underlying this area
- Isostatic gravity map with simplified geology of the Los Angeles 30'x60' Quadrangle [New Window]
- Includes detailed point measurements of gravity
- Gravity data from Dry Lake and Delamar Valleys, east-central Nevada [New Window]
- Principal facts (gravity observations) for 185 new stations
- Gravity studies of Cave, Dry Lake, and Delamar Valleys, East-Central Nevada [New Window]
- Gravity surveys and structural interpretation of anomaly data in support of ground-water studies
- Schlumberger DC resistivity soundings in the Boulder watershed, Jefferson and Lewis and Clark counties, Montana [New Window]
- DC resistivity soundings were made to map subsurface lithologic, structural and hydrologic features important in controlling possible ground water contamination from mining activities and for design of remediation efforts.
