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Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020 Gravity data were collected during three separate campaigns during July of 2013, August and September of 2014, and September and October of 2020 at 168 sites on and around the Stillwater layered mafic complex in southern Montana. Measurements were taken with Lacoste & Romberg G-64, G-550, and G-161 gravimeters and reduced to obtain the complete Bouguer anomaly, with reference ties to absolute base stations at U.S. Post Offices in Spokane, Washington (2014), Billings (2013-2014) and Livingston (2020), Montana. This data release includes principal facts for 168 new gravity stations and shapefiles with field locations. Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Absaroka-Beartooth Wilderness, Beartooth Mountains, Billings Post Office, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags... Livingston Post Office, MRP, Mineral Resources Program, Montana, Spokane, Stillwater, Sweet Grass, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Washington, bouguer anomaly, free-air anomaly, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), isostatic anomaly, Fewer tags Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of Yellowstone's myriad thermal features by constraining the geometry of the major hydrostratigraphic contacts and mapping regional-scale geologic structures. Data were acquired by SkyTEM ApS with the SkyTEM 312M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Grand Canyon of the Yellowstone River, Hot Spring Basin Group, All tags... Lower Falls of the Yellowstone River, Lower Geyser Basin, MRP, Mammoth Hot Springs, Midway Geyser Basin, Mineral Resources, Mineral Resources Program, Mud Volcano, Norris Geyser Basin, Old Faithful, Park County, Pelican Valley, State of Wyoming, Teton County, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States of America, Upper Falls of the Yellowstone River, Upper Geyser Basin, Volcanology, Wyoming, Yellowstone Lake, Yellowstone National Park, Yellowstone National Park, Yellowstone River, aeromagnetic surveying, electromagnetic surveying, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, geothermic, groundwater, hydrogeology, resistivity, Fewer tags Airborne electromagnetic and magnetic survey data, Iliamna Volcano, Alaska, June 2012 Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 system with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Alaska, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Iliamna Volcano, Kenai Peninsula, All tags... MRP, Mineral Resources Program, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), USGS Volcano Hazards Program, aeromagnetic surveying, electromagnetic surveying, geophysics, geoscientificInformation, geospatial datasets, hazards, landslides, resistivity, volcanology, Fewer tags Processed airborne electromagnetic data Iliamna Volcano, Alaska June 2012 Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 system with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey... Categories: Data; Tags: Alaska, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Iliamna Volcano, Kenai Peninsula, All tags... MRP, Mineral Resources Program, U.S. Geological Survey, USGS, USGS Volcano Hazards Program, aeromagnetic surveying, electromagnetic surveying, geophysics, geoscientificInformation, geospatial datasets, hazards, landslides, resistivity, volcanology, Fewer tags Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016 Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of Yellowstone's myriad thermal features by constraining the geometry of the major hydrostratigraphic contacts and mapping regional-scale geologic structures. Data were acquired by SkyTEM ApS with the SkyTEM 312M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was... Categories: Data; Tags: GGGSC, Geology, Geophysics, and Geochemistry Science Center, Grand Canyon of the Yellowstone, Hot Spring Basin Group, Lower Falls of the Yellowstone River, All tags... Lower Geyser Basin, MRP, Mammoth Hot Springs, Midway Geyser Basin, Mineral Resources Program, Mud Volcano, Norris Geyser Basin, Old Faithful, Park County, Pelican Valley, Teton County, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States of America, Upper Falls of the Yellowstone River, Upper Geyser Basin, Wyoming, Yellowstone Lake, Yellowstone National Park, Yellowstone River, aeromagnetic surveying, electromagnetic surveying, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, geothermics, groundwater, hydrogeology, resistivity, Fewer tags Inversion models, Iliamna Volcano, Alaska June 2012 Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the USGS Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 system with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 m above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed to cover the summit and... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Alaska, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Iliamna Volcano, Kenai Peninsula, All tags... MRP, Mineral Resources Program, U.S. Geological Survey, USGS, USGS Volcano Hazards Program, aeromagnetic surveying, electromagnetic surveying, geophysics, geoscientificInformation, geospatial datasets, hazards, landslides, resistivity, volcanology, Fewer tags Raw survey data Iliamna Volcano, Alaska June 2012 Airborne electromagnetic (AEM) and magnetic survey data were collected during June 2012 along 556 line-kilometers over Iliamna Volcano, Alaska. These data were collected in support of alteration and volcano flank instability mapping as part of the U.S. Geological Survey (USGS) Volcano Hazards Program. Data were acquired by SkyTEM Survey ApS SkyTEM304 with the Soloy Helicopters Eurocopter Astar 350 B3 and Bell 407 dual-moment, time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer with Kroum KMAG4 counter. The survey was flown at a nominal flight height of 30 meters (m) above terrain along block-style lines with a nominal spacing of 250 m. The survey was designed... Categories: Data; Tags: Alaska, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Iliamna Volcano, Kenai Peninsula, All tags... MRP, Mineral Resources Program, U.S. Geological Survey, USGS, USGS Volcano Hazards Program, aeromagnetic surveying, electromagnetic surveying, geophysics, geoscientificInformation, geospatial datasets, hazards, landslides, resistivity, volcanology, Fewer tags