The Freda Sandstone is a geologic formation in Michigan. It dates back to the Proterozoic. Lithologically, the Freda Sandstone is a lithic, red-brown, cyclic sequence of sandstones, mudstones and shales (conglomerates are rare).
Freda Sandstone | |
---|---|
Stratigraphic range: Proterozoic | |
Type | Formation |
Underlies | Jacobsville Sandstone |
Overlies | Nonesuch Shale |
Lithology | |
Primary | sandstone |
Other | mudstone, shale |
Location | |
Region | Michigan and Wisconsin |
Country | ![]() |
![](http://up.wiki.x.io/wikipedia/commons/thumb/9/98/NPS_apostle-islands-geologic-map.jpg/350px-NPS_apostle-islands-geologic-map.jpg)
References
edit- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.
- Catacosinos, Paul (1991). "Early Sedimentary Evolution of the Michigan Basin". Geological Society of America Special Paper. 256 (1): 248. ISBN 978-0-8137-2256-6.