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Electrical resistivity tomography (ERT) and horizontal-to-vertical spectral ratio (HVSR) data collected east of Box Elder, South Dakota, in 2021
- Organization: Department of the Interior
- Dataset Last Updated: December 19, 2022 at 12:00 AM
The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, used surface geophysical methods to delineate the top of the Cretaceous Pierre Shale along survey...
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Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 05:45 AM

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