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Airborne magnetic and radiometric survey, southeast Missouri and western Illinois, 2018-2019 This publication provides digital flight line data for a high-resolution horizontal magnetic gradient and radiometric survey over an area of southeast Missouri and western Illinois. The survey represents the first airborne geophysical survey conducted as part of the U.S. Geological Survey (USGS) Earth Mapping Resource Initiative (Earth MRI) effort (Day, 2019). Earth MRI is a cooperative effort between the USGS, the Association of American State Geologists, and other Federal, State, and private sector organizations to improve our knowledge of the geologic framework of the United States. Data for this survey were collected by Terraquest, Ltd. under contract with the USGS using a fixed wing aircraft with magnetometers... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Earth Mapping Resources Initiative, EarthMRI, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Illinois, All tags... Ironton, MRP, Mineral Resources Program, Missouri, USGS Science Data Catalog (SDC), aeromagnetic surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, horizontal magnetic gradiometry, none, potassium, thorium, uranium, Fewer tags Airborne Electromagnetic (AEM) Survey Inventory The U.S. Geological Survey (USGS) has been engaged in airborne electromagnetics (AEM) since the 1970s, playing a role in the development of early acquisition systems, developing calibration methods, refining standards for data acquisition, improving data processing, modeling, and interpretation methods, and expanding the range of AEM applications. However, USGS AEM survey visibility and data accessibility has not advanced as rapidly as our use of the technique. This data release catalogs AEM surveys in the United States that have contributed to studies under USGS programs including Water, Geologic Mapping, Minerals, Energy, Environmental Health, Ecosystems, Hazards, and Climate. This dataset contains locations for... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alabama, Arizona, Arkansas, California, Colorado, All tags... Connecticut, Delaware, Florida, Geophysics, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, electromagnetic surveying, frequency-domain, geophysics, geoscientificInformation, geospatial datasets, resistivity, time-domain, Fewer tags Directory of Public Repositories of Geological Materials Overview This directory was developed to provide discovery information for anyone looking for publicly accessible repositories that house geological materials in the U.S. and Canada. In addition, this resource is intended to be a tool to facilitate a community of practice. The need for the directory was identified during planning for and follow-up from a drill core repository webinar series in Spring 2020 for public repository curators and staff in the U.S. and Canada hosted by the Minnesota Geological Survey and the Minnesota Department of Natural Resources. Additional supporting sponsors included the U.S. Geological Survey National Geological and Geophysical Data Preservation Program and the Association of American... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Alaska, Alberta, Arkansas, British Columbia, All tags... Canada, Colorado, Connecticut, Delaware, Economic Geology, Energy Resources, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Marine Geology, Maryland, Massachusetts, Michigan, Mineral Resources, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New York, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Ohio, Oklahoma, Ontario, Pennsylvania, Saskatchewan, South Carolina, South Dakota, Texas, USGS Science Data Catalog (SDC), United States, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon, directories, drilling and coring, fossils, geoscientificInformation, igneous rocks, metamorphic rocks, mineral deposits, petroleum, sample repositories, sedimentary rocks, specimen collecting, unconsolidated deposits, Fewer tags Airborne electromagnetic and magnetic survey data in Big Cypress National Preserve and Everglades National Park, 2001 Airborne electromagnetic (AEM) and magnetic survey data, a total of 3065 line-kilometers, were collected during October 2001 in two survey blocks and four repeated lines from an earlier survey. The largest area, Block 1 totaling 2692.2 line-kilometers was flown over Big Cypress Preserve, smaller Block 2 along 277.1 line-kilometers was flown near the town of Homestead, and four lines totaling 95.2 line-kilometers were flown over Everglades National Park. The lines over Everglades National Park repeated the path of four lines from an earlier AEM survey collected in December 1994 (released under USGS Open-File Report 02-101 downloadable at https://pubs.er.usgs.gov/publication/ofr02101). Electromagnetic data were acquired... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Big Cypress National Preserve, City of Homestead, Dade County, Everglades National Park, Florida Bay, All tags... Monroe County, South Florida, USGS Science Data Catalog (SDC), aeromagnetic surveying, aquifer, coastal aquifer, electromagnetic surveying, environment, freshwater/saltwater interface, geophysics, geoscientificInformation, geospatial datasets, groundwater, magnetic surveying, monitoring, resistivity, salinity, saltwater intrusion, water quality, Fewer tags MineralPredominance Mineral predominance data were a derivative product from the Corescan© reflectance data. Corescan Hyperspectral Core Imager Mark III (HCI-III) system data were acquired for hand samples, and subsequent billets made from the hand samples, collected during the U.S. Geological Survey (USGS) 2014, 2015, and 2016 field seasons in the Nabesna area of the eastern Alaska Range. This area contains exposed porphyry deposits and hand samples were collected throughout the region in support of the HyMap imaging spectrometer survey (https://doi.org/10.5066/F7DN435W) (Kokaly and others, 2017a). The HCI-III system consists of three different components. The first is an imaging spectrometer which collects reflectance data with a... Categories: Data; Tags: Alaska, Alaska, Alaska Range, Bond Creek, Canada, All tags... ENVI, Environment for Visualizing Images, MRP, Mineral Resources Program, Nabesna, Nabesna A-2 quadrangle, Nabesna A-4 quadrangle, Nabesna B-4 quadrangle, Nikonda Creek, Nutzotin Mountains, Orange Hill, SWIR, VNIR, Valdez-Cordova County, Wrangell Mountains, Wrangell–Saint Elias National Preserve, Yukon Territory, economy, geoscientificInformation, hyperspectral imaging, imaging spectroscopy, infrared imaging, mineral resources, mineralogy, remote sensing, shortwave infrared, spectroscopy, visible-near infrared, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt02 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Airborne electromagnetic and magnetic survey data, Stillwater Complex, Montana, May 2000 Note: There is an updated version of this data release, available here: https://doi.org/10.5066/P92R4OL2 A helicopter-borne electromagnetic/magnetic survey was flown over the Stillwater area, southwest Montana from May 5 to May 16, 2000. The survey was conducted over the Stillwater Igneous Complex, a Precambrian layered mafic-ultramafic intrusion which is characterized by igneous layering. Electromagnetic data were acquired using DIGHEM helicopter-borne electromagnetic system. Magnetic data were collected with optically pumped Cesium Vapor Geometrics G822 magnetometer. Sensor elevation above ground was measured with Honeywell/Sperry AA220 radar. The nominal elevation of the sensor was 60 meters. Survey coverage... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, Montana, aeromagnetic surveying, electromagnetic surveying, geology, All tags... geophysics, geoscientificInformation, resistivity, Fewer tags Everglades_4Lines_2001 Airborne electromagnetic (AEM) and magnetic survey data along four flight lines were collected in Everglades National Park, Florida as part of a larger survey. Data were collected during October 2001. These lines, totaling 95.2 line-kilometers, repeated the path of four lines from earlier AEM survey collected in December 1994 (released under USGS Open-File Report 02-101 downloadable at https://pubs.er.usgs.gov/publication/ofr02101). Electromagnetic data were acquired with Dighem VRES frequency-domain system. Magnetic data were collected with a Scintrex CS2 cesium-vapor magnetometer. The nominal elevation of the electromagnetic system was 30 m. This data release includes raw and processed AEM data. This release also... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Big Cypress National Preserve, City of Homestead, Dade County, Everglades National Park, Florida Bay, All tags... Monroe County, South Florida, aeromagnetic surveying, aquifer, coastal aquifer, electromagnetic surveying, environment, freshwater/saltwater interface, geophysics, geoscientificInformation, geospatial datasets, groundwater, magnetic surveying, monitoring, resistivity, salinity, saltwater intrusion, water quality, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt03 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt05 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt04 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt06 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Alaska Selected archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program, were reanalyzed by the U.S. Geological Survey (USGS) as part of a NURE-HSSR Reanalysis project (Smith and others, 2018). A small amount (approximately 0.25 grams [g]) of sieved less than 75-micron sample material was retrieved from the USGS National Geochemical Sample Archive for geochemical analysis. These samples were analyzed for 51 elements under a Technical Assistance Agreement with a third party by ALS Global laboratories using their ultra-trace four-acid-digestion dual-mode inductively coupled plasma-optical emission spectrometry/mass spectrometry... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, DOE, Economic Geology, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, Hydrogeochemistry and Stream Sediment Reconnaissance, Iliamna, Lake Clark, Mineral Resources, NURE, NURE-HSSR, National Geochemical Sample Archive, National Uranium Resource Evaluation, Pebble Deposit, U.S. Department of Energy, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, chemical analysis, environmental geochemistry, exploration geochemistry, geochemical data, geochemistry, lake sediment, natural resource exploration, sediment chemistry, sediment geochemistry, stream sediment, unconsolidated deposits, uranium, Fewer tags Corescan© Hyperspectral Core Imager, Mark III system data collected for the characterization of mineral resources near Nabesna, Alaska, 2014-2016 Corescan© Hyperspectral Core Imager Mark III (HCI-III) system data were acquired for hand samples, and subsequent billets made from the hand samples, collected during the U.S. Geological Survey (USGS) 2014, 2015, and 2016 field seasons in the Nabesna area of the eastern Alaska Range. This area contains exposed porphyry deposits and hand samples were collected throughout the region in support of the HyMap imaging spectrometer survey (https://doi.org/10.5066/F7DN435W) (Kokaly and others, 2017a). The HCI-III system consists of three different components. The first is an imaging spectrometer which collects reflectance data with a spatial resolution of approximately 500 nanometers (nm) for 514 spectral channels covering... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Alaska, Alaska, Alaska Range, Bond Creek, Canada, All tags... ENVI, Environment for Visualizing Images, GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resources Program, Nabesna, Nabesna A-2 quadrangle, Nabesna A-4 quadrangle, Nabesna B-4 quadrangle, Nikonda Creek, Nutzotin Mountains, Orange Hill, SWIR, USGS Science Data Catalog (SDC), VNIR, Valdez-Cordova County, Wrangell Mountains, Wrangell–Saint Elias National Preserve, Yukon Territory, economy, geoscientificInformation, hyperspectral imaging, imaging spectroscopy, infrared imaging, mineral resources, mineralogy, remote sensing, shortwave infrared, spectroscopy, visible-near infrared, Fewer tags Calibration Measurements of reference materials were made on the Corescan© HCI-III to evaluate the supplied channel wavelength positions and bandpass values. Wavelength position and bandpass of channels in a spectrometer, referred to as full-width half max (FWHM) in the contractor's documentation (Corescan_Product_MetaData_v3.pdf), are two fundamental spectral characteristics that need to be known in order to spectrally identify minerals by comparison to a spectral library, like the Material Identification and Characterization Algorithm (MICA) analysis used to generate the mineral predominance maps. Spectrometers with finer bandpass can reveal greater spectral detail that can be related to a material’s chemical composition... Categories: Data; Tags: Alaska, Alaska, Alaska Range, Bond Creek, Canada, All tags... ENVI, Environment for Visualizing Images, GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resources Program, Nabesna, Nabesna A-2 quadrangle, Nabesna A-4 quadrangle, Nabesna B-4 quadrangle, Nikonda Creek, Nutzotin Mountains, Orange Hill, SWIR, VNIR, Valdez-Cordova County, Wrangell Mountains, Wrangell–Saint Elias National Preserve, Yukon Territory, economy, geoscientificInformation, hyperspectral imaging, imaging spectroscopy, infrared imaging, mineral resources, mineralogy, remote sensing, shortwave infrared, spectroscopy, visible-near infrared, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt07 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt08 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990; Station mt09 The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. Truck mounted systems of this era output data to 3.5” discs, from which data were recovered... Categories: Data; Tags: California, EDI, Electrical Data Interchange, Fresno County, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Loma Prieta, Map Service, Mineral Resources Program (MRP), Monterey County, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, SPUD, San Andreas Fault, San Andreas Fault System, Searchable Product Depository, electromagnetic surveying, faulting (geologic), geophysics, geoscientificInformation, legacy data, magnetotelluric sounding, magnetotelluric surveying, Fewer tags Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 5.0, April 2024) This data release is a compilation of the locations of airborne geophysical surveys in the United States. The inventory documents public airborne geophysical surveys primarily flown by or contracted by the USGS from 1943 to present. In addition, surveys from the State of Alaska, Department of Natural Resources, Division of Geological and Geophysical Surveys (DGGS): Airborne GeophysWeb, the Bureau of Land Management, the Department of Energy and other state agencies have also been included. The surveys have contributed to studies under USGS programs including Water, Geologic Mapping, Minerals, Energy, Environmental Health, Ecosystems, Hazards, and Climate. This dataset contains locations for known and inventoried... Categories: Data, Data Release - Revised; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alabama, Alaska, Arizona, Arkansas, California, All tags... Colorado, Connecticut, Delaware, District of Columbia, Earth MRI, Florida, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, MRP, Maine, Maryland, Massachusetts, Michigan, Mineral Resources Program, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, aeromagnetic surveying, aeroradiometric surveying, electromagnetic surveying, frequency-domain, geophysical, geophysics, geophysics, geoscientificInformation, geospatial datasets, gravitational field (earth), resistivity, time-domain, Fewer tags Homestead_2001 Airborne electromagnetic (AEM) and magnetic survey data were collected near Homestead, Florida as part of a larger survey. Data were collected during October 2001. The Homestead part of the survey consisted of 277.1 line-kilometers. Electromagnetic data were acquired with Dighem VRES frequency-domain system. Magnetic data were collected with a Scintrex CS2 cesium-vapor magnetometer. The line spacing was 400 m and a single tie line was flown in the middle of the survey area. The nominal elevation of the electromagnetic system was 30 m. This data release includes raw and processed AEM data. This release also includes unprocessed and processed magnetic data that have been drift corrected. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Big Cypress National Preserve, City of Homestead, Dade County, Everglades National Park, Florida Bay, All tags... Monroe County, South Florida, aeromagnetic surveying, aquifer, coastal aquifer, electromagnetic surveying, environment, freshwater/saltwater interface, geophysics, geoscientificInformation, geospatial datasets, groundwater, magnetic surveying, monitoring, resistivity, salinity, saltwater intrusion, water quality, Fewer tags 1 2 »