Freda Sandstone

{{Infobox rockunit

| name = Freda Sandstone

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| type = Formation

| age = Proterozoic

| period = Proterozoic

| prilithology = sandstone

| otherlithology = mudstone, shale

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| region = Michigan and Wisconsin

| country = {{Flag|United States}}

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| underlies = Jacobsville Sandstone

| overlies = Nonesuch Shale

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File:NPS apostle-islands-geologic-map.jpg 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).

References

{{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021|df= dmy-all|archive-date= 25 March 2022|archive-url= https://web.archive.org/web/20220325060448/http://www.fossilworks.org/cgi-bin/bridge.pl?action=home|url-status= live}}

{{cite journal |last1= Catacosinos |first1= Paul |date= 1991 |title= Early Sedimentary Evolution of the Michigan Basin |url= https://books.google.com/books?id=bk1KWLyxmdcC|journal= Geological Society of America Special Paper|volume= 256|issue= 1|pages= 248|isbn=978-0-8137-2256-6}}

Category:Stratigraphy of Michigan