Freda Sandstone

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	United States

Freda Sandstone (Pcf, grey) on NPS Apostle Islands geological map

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).

• Earth sciences portal
• Michigan portal
• Paleontology portal

References

• 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.