Airborne electromagnetic and magnetotelluric geophysical surveys were conducted from 2018 to 2019 in Arrastra Gulch along the southern margins of the San Juan and Silverton calderas. This scene provides 3-D data integration combining electromagnetic data, geologic and historical mine mapping, and high-resolution drone imagery.
Data References:
Hoogenboom, B.E., Deszcz-Pan, M., Anderson, E.D., Rodriguez, B.D., Smith, B.D., and Yager, D.B., 2022, Airborne electromagnetic and magnetic survey data, Silverton, Colorado, 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P92IADBP.
Reitman, J., Rodriguez, B.D., Brown, P.J., and Yager, D.B., 2021, Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9F68AQP.
Varnes, D.J., 1963, Geology and ore deposits of the South Silverton mining area, San Juan County, Colorado: U.S. Geological Survey Professional Paper, https://doi.org/10.3133/pp378A.
Basemap imagery service:
Esri, 2022, USGSTopo: Esri map service, accessed September 1, 2022, at https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer.
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Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019
Airborne electromagnetic and magnetic survey data of the San Juan-Silverton Caldera complex, Silverton, Colorado, 2019
Data Reference
Geology and ore deposits of the South Silverton mining area, San Juan County, Colorado
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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 kilometAirborne electromagnetic and magnetic survey data of the San Juan-Silverton Caldera complex, Silverton, Colorado, 2019
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Data Reference
Geology and ore deposits of the South Silverton mining area, San Juan County, Colorado
The South Silverton mining area is immediately southeast of the town of Silverton, San Juan County, in southwestern Colorado (fig. 1). The town of Silverton itself lies in a relatively flat and open reach of the Animas Valley, called Bakers Park, in the western part of the San Juan Mountains. (See figs. 2 and 8.) The roughly circular area of the geologic map map (pl. 1) includes about 18½ square mAuthorsDavid J. Varnes