SEAFARER Site Survey, Upper Michigan Region. Book 10. Bedrock Geologic Data.
GTE SYLVANIA INC NEEDHAM HEIGHTS MASS COMMUNICATIONS SYSTEMS DIV
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Most of the rocks within the Study Area are of Precambrian Age more than 600 million years old. Since at least the mid-Paleozoic time, the area has been tectonically stable. Hard bare rock is exposed at the surface in relatively small areas, but a soil and glacial mantle ranging from a few to a few hundred feet thick overlies the bedrock throughout most of the area. A Bedrock Geologic Data Map has been compiled which gives the areal distribution of bedrock in the Study Area. Author
- Geology, Geochemistry and Mineralogy
- Civil Engineering
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