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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (7) Types Map Service (14) OGC WFS Layer (14) Downloadable (7) OGC WMS Service (7) Shapefile (7) Contacts Jonathan Casey Root U.S. Geological Survey - ScienceBase Geology, Geophysics, and Geochemistry Science Center Energy and Minerals Philip J Brown II More... Categories Data (11) Tag Types Place (14) Theme (14) USGS Scientific Topic Keyword (9) Harvest Set (10) Tag Schemes Geographic Names Information System (GNIS) (9) USGS Thesaurus (14) None (5) USGS Geographic Names Information System (GNIS), https://geonames.usgs.gov (3) none (2) Common geographic areas (6) ISO 19115 Topic Category (6) More... View Results as: JSON ATOM CSV

Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 This dataset includes magnetotelluric (MT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and audiomagnetotellurics, the USGS collected MT data at 24 sites along five profiles ranging from 2 to 5 kilometers in length: across Red Mountain of the Silverton caldera, within the caldera in Eureka Graben, across the south-eastern margin of the caldera along Arrastra Gulch, across the southern margin of the caldera along the western margin of Kendall Mountain, and across the south-western margin of the caldera along South Fork... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Animas River, Arrastra Gulch, Colorado, DOI, Department of the Interior, All tags... Economic Geology, Environmental Health, Eureka Graben, GGGSC, GPS measurement, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Hydrology, Kendall Mountain, MRP, MT, Mineral Resources, Mineral Resources Program, Ouray County, Red Mountain, San Juan County, San Juan County, San Juan-Silverton Caldera Complex, Silverton, South Fork Mineral Creek, Southern Rocky Mountain Volcanic Field, Southern Rocky Mountains, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, Water Quality, abandoned mine lands cleanup, abandoned mines and quarries, apparent resistivity, economy, electric field (earth), geophysics, geoscientificInformation, hydrothermal processes, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, mineral deposits, mineral resources, sounding, tipper, water quality, Fewer tags Part 4 – Photographs of sediment cores collected in 2018 from Lake Powell, Utah This section of the data release includes core images in the format of photos (JPG) that have been compressed into a zipped file (2018LakePowellCoring_CorePhotos.zip). It is Part 4 (of four) in this data release and contains images of the cleaned archival half from split cores as they appeared immediately after splitting (late March and early April 2019). Each photo includes a ruler (in centimeters) and X-Rite ColorChecker Classic color correction card that may be used for corrections. Drillhole information, such as location and total recovery, are outlined in “Part 1 – Drillhole information from the 2018 coring project in Lake Powell, Utah” (2018LakePowellCoring_DrillholeInfo.csv) of this data release. Each drillhole... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bears Ears National Monument, Bullfrog, Bullfrog Bay, All tags... Canyonlands National Park, Capitol Reef National Park, Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Dirty Devil River, Escalante River, Farley Canyon, Fourmile Canyon, Friendship Bay, Garfield County, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Kane County, Lake Powell, Last Chance Bay, Mexican Hat, Monument Valley, Narrow Canyon, Navajo Canyon, Neshkahi Wash, North Wash, Padre Bay, Page, Piuite Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Silverton, State of Arizona, State of Utah, The Horn, Trachyte Canyon, Twomile Canyon, United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, bedforms, bulk density, clay deposits, contaminant transport, contamination and pollution, core analysis, dissolved metals, drilling and coring, field inventory and monitoring, geomorphology, gravel deposits, groundwater and surface-water interaction, hazards, human environmental safety, hydrogeology, hydrologic processes, hydrology, image analysis, industrial pollution, lakebed characteristics, lidar, limnology, magnetic susceptibility analysis, mine drainage, mine waste, national centers, partnerships, photography, piston coring, recreation, remediation, resistivity, rotary coring, sample repositories, sand deposits, sedimentation, sedimentology, sediment transport, soil horizons, spectrophotometry, stratigraphic sections, stratigraphic thickness, stratigraphy, stream-gage measurement, streamflow, surface-water level, surface water (non-marine), surface water quality, suspended material, toxic trace element contamination, turbidity, unconsolidated deposits, water circulation, water resources, water supply and demand, Fewer tags Digital Elevation Model of Glen Canyon Prior to the Flooding of Lake Powell from Historic Topographic Surveys, Utah and Arizona Development of a high-resolution digital elevation model (DEM) of the pre-Glen Canyon Dam topography in Glen Canyon National Recreation Area, Utah and Arizona was initiated to assist the U.S. Geological Survey (USGS) in its Lake Powell coring program in the fall of 2018 (https://www.usgs.gov/centers/ut-water/science/lake-powell-coring). Topographic surveys of Glen Canyon were commissioned by the Bureau of Reclamation during the planning stages for Lake Powell as part of the Colorado River Storage Project (S. 500, 1956). The Colorado River arm was surveyed by Alster and Associates, Inc. in 1958 and 1959 at a contour interval of 10-feet from the river surface at the future dam site through where the 3,750-foot contour... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bullfrog, Bullfrog Bay, Capitol Reef National Park, All tags... Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Escalante River, Fourmile Canyon, Friendship Bay, Garfield County, Geomorphology, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight Bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Information Sciences, Kane County, Lake Powell, Land Use Change, Last Chance Bay, Mexican Hat, Navajo Canyon, Navajo Indian Reservation, Neshkahi Wash, Padre Bay, Page, Piute Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Silverton, State of Arizona, State of Utah, Twomile Canyon, USGS Science Data Catalog (SDC), United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, Water Quality, Water Resources, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, digital elevation model, geomorphology, historical data, reservoir sedimentation, Fewer tags Part 1 – Drillhole information from the 2018 coring project in Lake Powell, Utah This section of the data release includes drillhole information in the format of a comma-separated value (CSV) file (2018LakePowellCoring_DrillholeInfo.csv). It is Part 1 (of four) in this data release and represents the broadest hierarchical information on the dataset including the drillhole name, location, water depth, sediments top and bottom, drillhole depth, and recovery for each coring location. Each drillhole comprises multiple cores which are outlined in “Part 2 – Core and core section information from the 2018 coring project in Lake Powell, Utah” (2018LakePowellCoring_CoreSectionInfo.csv) of this data release. Core logs and spectrophotometry data are available in “Part 3 – Multi-Sensor Core Logger and spectrophotometry... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bears Ears National Monument, Bullfrog, Bullfrog Bay, All tags... Canyonlands National Park, Capitol Reef National Park, Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Dirty Devil River, Escalante River, Farley Canyon, Fourmile Canyon, Friendship Bay, Garfield County, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Kane County, Lake Powell, Last Chance Bay, Mexican Hat, Monument Valley, Narrow Canyon, Navajo Canyon, Neshkahi Wash, North Wash, Padre Bay, Page, Piuite Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Silverton, State of Arizona, State of Utah, The Horn, Trachyte Canyon, Twomile Canyon, United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, bedforms, bulk density, clay deposits, contaminant transport, contamination and pollution, core analysis, dissolved metals, drilling and coring, field inventory and monitoring, geomorphology, gravel deposits, groundwater and surface-water interaction, hazards, human environmental safety, hydrogeology, hydrologic processes, hydrology, image analysis, industrial pollution, lakebed characteristics, lidar, limnology, magnetic susceptibility analysis, mine drainage, mine waste, national centers, partnerships, photography, piston coring, recreation, remediation, resistivity, rotary coring, sample repositories, sand deposits, sedimentation, sedimentology, sediment transport, soil horizons, spectrophotometry, stratigraphic sections, stratigraphic thickness, stratigraphy, stream-gage measurement, streamflow, surface-water level, surface water (non-marine), surface water quality, suspended material, toxic trace element contamination, turbidity, unconsolidated deposits, water circulation, water resources, water supply and demand, Fewer tags Hydrologic reconnaissance to identify areas of emergent groundwater, Mineral Creek, near Silverton, Colorado, June 2020 Hydrologic reconnaissance of Mineral Creek near Silverton, Colo., was conducted from June 25-27, 2020. Both banks of Mineral Creek and the adjacent hillsides were walked, starting near the ghost town of Chattanooga and proceeding downstream to the confluence of Mineral Creek with the Middle Fork of Mineral Creek. The purpose of this reconnaissance was to identify areas of emergent groundwater on the right (EGR) and left (EGL) banks, a task that was accomplished by following observed surface flows (seeps and springs) upgradient to the point at which they emanated from the subsurface. Coordinates, using a handheld global positioning system (GPS) device, and photographs were obtained at these locations of emergent... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bonita Peak Mining District, CWSC, Colorado, Colorado Water Science Center, GGGSC, All tags... Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Hydrology, MRP, Mineral Creek, Mineral Creek, Mineral Resources, Mineral Resources Program, San Juan County, San Juan Mountains, Silverton, Silverton Caldera, Southern Rocky Mountains Volcanic Field, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Quality, Water Resources, environment, geoscientificInformation, groundwater, hydrogeology, hydrology, water chemistry, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018 This data release includes audiomagnetotelluric (AMT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 24 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "San Juan" County, AMT, Colorado, Environmental Health, GGGSC, All tags... GPS measurement, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Hydrogeology, MRP, MT, Mineral Resources Program, Mineralogy, Silverton, USGS Science Data Catalog (SDC), Volcanology, Water Quality, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, sounding, tipper, Fewer tags Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018 This data release includes magnetotelluric (MT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and audiomagnetotellurics, the USGS collected MT data at 22 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09). Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Animas River, Arrastra Gulch, Colorado, Eureka Graben, GGGSC, All tags... Geology, Geophysics, and Geochemistry Science Center, GeoscientificInformation, Kendall Mountain, MRP, MT, Mineral Resources Program, Ouray County, Red Mountain, San Juan County, Silverton, South Fork Mineral Creek, Southern Rocky Mountains, Southern Rocky Mountains Volcanic Field, USGS Science Data Catalog (SDC), USGS:6019ca77d34edf5c66f0d786, abandoned mines and quarries, apparent resistivity, electric field (earth), electromagnetic surveying, electromagnetic surveying, geophysics, hydrothermal processes, impedance, magnetic field (earth), magnetic field (earth), magnetotelluric surveying, magnetotellurics, mineral resources, phase, time series, water quality, Fewer tags Initial core data of 2018 sediment cores from Lake Powell, Utah The Lake Powell Coring Project was a USGS research effort, in cooperation with the Utah Department of Environmental Quality, U.S. Bureau of Reclamation, and U.S. National Park Service. In the fall of 2018, hydraulic piston cores targeted sediment that had been deposited in Lake Powell. This large reservoir on the Colorado River in Utah and Arizona was created after the completion of Glen Canyon Dam in 1963. Retrieval and analysis of cores was undertaken in response to the Gold King mine release from the Bonita Peak Mining District in Colorado on August 5, 2015. This event resulted in the containment loss of three-million gallons of mine-impacted waters which flowed from the Animas River into the San Juan River,... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bears Ears National Monument, Bullfrog, Bullfrog Bay, All tags... Canyonlands National Park, Capitol Reef National Park, Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Dirty Devil River, Environmental Health, Escalante River, Farley Canyon, Fourmile Canyon, Friendship Bay, Garfield County, Geomorphology, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Kane County, Lake Powell, Last Chance Bay, Mexican Hat, Monument Valley, Narrow Canyon, Navajo Canyon, Neshkahi Wash, North Wash, Padre Bay, Page, Piuite Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Sedimentology, Silverton, State of Arizona, State of Utah, The Horn, Trachyte Canyon, Twomile Canyon, USGS Science Data Catalog (SDC), United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, Water Quality, Water Resources, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, bedforms, bulk density, clay deposits, contaminant transport, contamination and pollution, core analysis, dissolved metals, drilling and coring, field inventory and monitoring, geomorphology, gravel deposits, groundwater and surface-water interaction, hazards, human environmental safety, hydrogeology, hydrologic processes, hydrology, image analysis, industrial pollution, lakebed characteristics, lidar, limnology, magnetic susceptibility analysis, mine drainage, mine waste, national centers, partnerships, photography, piston coring, recreation, remediation, resistivity, rotary coring, sample repositories, sand deposits, sedimentation, sedimentology, sediment transport, soil horizons, spectrophotometry, stratigraphic sections, stratigraphic thickness, stratigraphy, stream-gage measurement, streamflow, surface-water level, surface water (non-marine), surface water quality, suspended material, toxic trace element contamination, turbidity, unconsolidated deposits, water circulation, water resources, water supply and demand, Fewer tags Part 3 – Multi-Sensor Core Logger and spectrophotometry logs of sediment cores collected in 2018 from Lake Powell, Utah This section of the data release includes core log and spectrophotometry data in the format of a comma-separated value (CSV) file (2018LakePowellCoring_CoreLogData.csv). It is Part 3 (of four) in this data release and provides geophysical core logs at 0.5-cm intervals from a Multi-Sensor Core Logger and Konica Minolta spectrophotometer. This CSV includes the depth in section and hole for each logged point, p-wave amplitude and velocity, gamma density, loop- and point-sensor magnetic susceptibility, electrical resistivity, colorspace data, and measured reflectance wavelengths. Drillhole information, such as location and total recovery, are outlined in “Part 1 – Drillhole information from the 2018 coring project in... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bears Ears National Monument, Bullfrog, Bullfrog Bay, All tags... Canyonlands National Park, Capitol Reef National Park, Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Dirty Devil River, Escalante River, Farley Canyon, Fourmile Canyon, Friendship Bay, Garfield County, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Kane County, Lake Powell, Last Chance Bay, Mexican Hat, Monument Valley, Narrow Canyon, Navajo Canyon, Neshkahi Wash, North Wash, Padre Bay, Page, Piuite Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Silverton, State of Arizona, State of Utah, The Horn, Trachyte Canyon, Twomile Canyon, United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, bedforms, bulk density, clay deposits, contaminant transport, contamination and pollution, core analysis, dissolved metals, drilling and coring, field inventory and monitoring, geomorphology, gravel deposits, groundwater and surface-water interaction, hazards, human environmental safety, hydrogeology, hydrologic processes, hydrology, image analysis, industrial pollution, lakebed characteristics, lidar, limnology, magnetic susceptibility analysis, mine drainage, mine waste, national centers, partnerships, photography, piston coring, recreation, remediation, resistivity, rotary coring, sample repositories, sand deposits, sedimentation, sedimentology, sediment transport, soil horizons, spectrophotometry, stratigraphic sections, stratigraphic thickness, stratigraphy, stream-gage measurement, streamflow, surface-water level, surface water (non-marine), surface water quality, suspended material, toxic trace element contamination, turbidity, unconsolidated deposits, water circulation, water resources, water supply and demand, Fewer tags Part 2 – Core and core section information from the 2018 coring project in Lake Powell, Utah This section of the data release includes core and core section information in the format of a comma-separated value (CSV) file (2018LakePowellCoring_CoreSectionInfo.csv). It is Part 2 (of four) in this data release and provides detailed core information. Complete recovery of a core resulted in approximately 3 m of sediment, which was sectioned into lengths not exceeding 1.5 m shipboard. Thus, all cores with >50% recovery contain multiple sections. This CSV includes drillhole, core, and core section identifiers, section lengths, section tops and bottoms, scaled section tops and bottoms, filenames for corresponding core images, and drilling comments. Drillhole information, such as location and total recovery, are... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Animas River, Antelope Canyon, Bears Ears National Monument, Bullfrog, Bullfrog Bay, All tags... Canyonlands National Park, Capitol Reef National Park, Castle Butte, Cataract Canyon, Cha Bay, Cha Canyon, Coconino County, Colorado River, Dangling Rope, Deep Canyon, Dirty Devil River, Escalante River, Farley Canyon, Fourmile Canyon, Friendship Bay, Garfield County, Glen Canyon Dam, Glen Canyon National Recreation Area, Gold King Mine, Good Hope Bay, Grand Staircase-Escalante National Monument, Great Bend, Gunsight bay, Halls Bay, Halls Crossing, Hite, Hole in the Rock, Kane County, Lake Powell, Last Chance Bay, Mexican Hat, Monument Valley, Narrow Canyon, Navajo Canyon, Neshkahi Wash, North Wash, Padre Bay, Page, Piuite Canyon, Piute Farms Wash, Piute Mesa, Piute Wash, Rainbow Bridge National Monument, Reflection Canyon, Rincon, Rock Creek Bay, San Juan County, San Juan River, Silverton, State of Arizona, State of Utah, The Horn, Trachyte Canyon, Twomile Canyon, United States of America, Wahweap, Wahweap Bay, Warm Creek Bay, White Canyon, Wilson Mesa, Zahn Bay, bathymetry, bedforms, bulk density, clay deposits, contaminant transport, contamination and pollution, core analysis, dissolved metals, drilling and coring, field inventory and monitoring, geomorphology, gravel deposits, groundwater and surface-water interaction, hazards, human environmental safety, hydrogeology, hydrologic processes, hydrology, image analysis, industrial pollution, lakebed characteristics, lidar, limnology, magnetic susceptibility analysis, mine drainage, mine waste, national centers, partnerships, photography, piston coring, recreation, remediation, resistivity, rotary coring, sample repositories, sand deposits, sedimentation, sedimentology, sediment transport, soil horizons, spectrophotometry, stratigraphic sections, stratigraphic thickness, stratigraphy, stream-gage measurement, streamflow, surface-water level, surface water (non-marine), surface water quality, suspended material, toxic trace element contamination, turbidity, unconsolidated deposits, water circulation, water resources, water supply and demand, Fewer tags High resolution helicopter-borne magnetic and electromagnetic survey Eureka Graben area, Colorado September 1999 On September 25, 1998, SIAL Géosciences Inc. (SIAL) was awarded Department of Interior, contract 98CRCN1018, by the U.S. Geological Survey. This contract required SIAL to carry out a high-sensitivity magnetic and electromagnetic helicopter survey over one block located in the Eureka Graben Area near Silverton, Colorado. The primary goal of this project was to provide digitally recorded and processed magnetic and electromagnetic data in order to evaluate geologic and hydrologic resources of the Eureka Graben Area. The base of on-site field operations was Silverton, Colorado. The survey was carried out by SIAL between May 27th and June 9th, 1999. This report describes the survey parameters, data acquisition and processing... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Animas, Colorado, Energy Resources, Environmental Health, Geophysics, All tags... MRP, Mineral Resources Program, Remote Sensing, Silverton, Structural Geology, USGS Science Data Catalog (SDC), Water Resources, aeromagnetic surveying, electrical resistivity measurements, electromagnetic conductivity measurements, geoscientificInformation, magnetic field (earth), magnetic field observations, resistivity, Fewer tags Airborne electromagnetic and magnetic survey data, Silverton, Colorado, 2019 Airborne electromagnetic (AEM) and magnetic survey data were collected during April and May 2019 along 1,467 line-kilometers in the San Juan-Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field. Data were acquired by Geotech, Ltd. with the versatile time-domain electromagnetic (VTEM-ET) system together with a Geometrics optically pumped cesium vapor magnetometer. The survey was flown at a mean flight height of 140 meters (m) above terrain in various line directions and line spacings ranging from 150 m to 600 m. Multiple variable-spaced lines were flown along rivers and streams in the survey area. USGS provided the contractor with the San Juan National Forest Lidar Point Cloud elevation... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "Mineral Resources", "San Juan" County, "Structural Geology"], Animas River, Bonita Peak Mining District, All tags... Cement Creek, Colorado, Geology, Geophysics, and Geochemistry Science Center (GGGSC), Mineral Creek, Mineral Resources Program (MRP), San Juan Mountains, Silverton, Silverton Caldera, Southern Rocky Mountains Volcanic Field, USGS Science Data Catalog (SDC), ["Geophysics", aeromagnetic surveying, electromagnetic surveying, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, magnetic anomaly maps, magnetic field, resistivity, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 26 sites along five profiles ranging from 2 to 5 kilometers in length: across Red Mountain of the Silverton caldera, within the caldera in Eureka Graben, across the south-eastern margin of the caldera along Arrastra Gulch, across the southern margin of the caldera along the western margin of Kendall Mountain, and across the south-western margin of the caldera along South Fork... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AMT, Animas River, Arrastra Gulch, Colorado, DOI, All tags... Department of the Interior, Environmental Health, Eureka Graben, GGGSC, GPS measurement, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Kendall Mountain, MRP, MT, Mineral Resources, Mineral Resources Program, Ouray County, Red Mountain, San Juan County, San Juan County, San Juan-Silverton Caldera Complex, Silverton, South Fork Mineral Creek, Southern Rocky Mountain Volcanic Field, Southern Rocky Mountains, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, Water Quality, abandoned mine lands cleanup, abandoned mines and quarries, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, geoscientificInformation, hydrothermal processes, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, mineral deposits, mineral resources, sounding, tipper, water quality, Fewer tags Water quality and discharge data from draining mine tunnels near Silverton, Colorado 1988-2015 The American Tunnel, the Black Hawk mine, the Gold King mine, the Mogul mine, and the Red and Bonita mine are located in the Cement Creek watershed, tributary to the upper Animas River near Silverton, Colorado. All five sites have tunnels that drain groundwater from abandoned underground mine workings to the surface. This draining water has elevated concentrations of metals and degrades water quality in Cement Creek. Water quality (pH, and dissolved copper, manganese, and zinc concentrations) and discharge data were compiled from multiple sources to examine changes in these parameters through time. Copper, manganese, and zinc loads calculated from these data are included in the data files. Data are reported for... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Colorado, Environmental Health, Geochemistry, Gladstone, San Juan, All tags... Silverton, USGS Science Data Catalog (SDC), Water Quality, Water Resources, abandoned mines and quarries, chemical analysis, environment, mine drainage, remediation, Fewer tags