Frequency domain electromagnetic (FDEM) surveys collected in Fredericktown, Missouri, June 2018
Dates
Publication Date
2020-06-29
Start Date
2018-06-25
End Date
2018-11-14
Citation
Johnson, C.D., White, E.A., Terry, N.C., Phillips, S.N., Werkema, D.D., Ford, R.G., Pappas, K.L., and Lane, J.W., Jr., 2020, Geophysical Data Collected for an Assessment of a Proposed Landfill Site in Fredericktown, Missouri, June 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P9EL99BD.
Summary
n June 2018, U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected geophysical measurements to help evaluate the suitability of a proposed landfill site for disposing mine-waste materials in Fredericktown, MO. Frequency domain electromagnetic (FDEM) induction data were collected above the land surface along the cleared paths through the proposed disposal cell locations. The data were collected with a hand-held, multi-frequency antenna carried approximately 1 meter (m) above the land surface at walking speeds using a multi-frequency tool. All unprocessed and processed data including the in-phase and quadrature components in parts per million, electrical conductivity (EC) in milliSiemens [...]
Summary
n June 2018, U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected geophysical measurements to help evaluate the suitability of a proposed landfill site for disposing mine-waste materials in Fredericktown, MO. Frequency domain electromagnetic (FDEM) induction data were collected above the land surface along the cleared paths through the proposed disposal cell locations. The data were collected with a hand-held, multi-frequency antenna carried approximately 1 meter (m) above the land surface at walking speeds using a multi-frequency tool. All unprocessed and processed data including the in-phase and quadrature components in parts per million, electrical conductivity (EC) in milliSiemens per meter (mS/m), and magnetic susceptibility in parts per thousand are served in this data release. In addition, the data were inverted to generate depth dependent estimates of conductivity along the profiles. An analysis of the depth of investigation indicated the FDEM reliably estimated conductivity values to depths of about 3 m below land surface. These output data are also served in this data release.
These geophysical data were collected to help characterize either the unconsolidated sediments, regolith, or combination of both above the bedrock and to determine the depth to the bedrock. These data can be used to help evaluate the overall suitability of the site for use as a waste-soil and sediment repository.