Geophysical surveys help explore the subsurface geology (seismic reflection).
By National Cooperative Geologic Mapping Program
2020 (approx.)
Detailed Description
Geophysical surveys at the land surface help scientists explore the subsurface geology. Here geologists collect geophysical data using geophones. In the resulting geophysical profile, colors highlight key horizons.
Sources/Usage
Public Domain.
Image and graph from Indiana Geological and Water Survey.