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This data release presents raw (.csv) and processed (.csv) data files from land-based, frequency-domain electromagnetic induction (EMI) data collected at Bicycle Basin, U.S. Army Fort Irwin National Training Center, California. Data were collected during three distinct time periods: March 19, 2008 (1 survey), December 1 to December 5, 2014 (46 surveys) and December 4 to December 8, 2015 (62 surveys). Data were collected by walking along survey lines throughout the airstrip region of the basin with the Geophex GEM-2 instrument at a height of approximately 1 meter above land surface in horizontal coplanar (ski flat) mode. The EMI data were used to map variations in subsurface electrical conductivity to investigate...
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This is the collection of original paper gamma-ray logs, copies and other items that are associated with the gamma-ray logs housed at the Indiana Geological Survey. They are stored in 12 file cabinets. This represents all of the original paper copies since 1978 when the collection began. Each log can be found filed in the original file, used mainly as a master file, as well as by county, the working file. The paper logs have been digitized made available to the public at https://igws.indiana.edu/borehole-logs in .las and .pdf format.
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Dataset consists of individual rasters, each describing a separate geochemical or geophysical attribute. See "Child Items" to browse and select desired rasters, download associated service definition file, and unzip to access rasters formatted as geoTiffs.


    map background search result map search result map Indiana Water Well Gamma-Ray Logs and Accompanying Records Geochemical and Geophysical Characteristics of the Conterminous United States Electromagnetic induction (EMI) geophysical data collected at the Bicycle Basin, U.S. Army Fort Irwin National Training Center, California Electromagnetic induction (EMI) geophysical data collected at the Bicycle Basin, U.S. Army Fort Irwin National Training Center, California Indiana Water Well Gamma-Ray Logs and Accompanying Records Geochemical and Geophysical Characteristics of the Conterminous United States