Ames Limestone
The Ames Limestone is a geologic formation in Ohio, Kentucky, Pennsylvania and West Virginia. It is part of the Conemaugh Group. Formerly know at "Crinoidal Limestone" and "Green Fossiliferous Lime" it was renamed to Ames.[1]
| Ames Limestone | |
|---|---|
| Stratigraphic range: Carboniferous ~ | |
.jpg.webp) Fossiliferous Ames Limestone (Morgan County, Ohio) | |
| Type | Member |
| Unit of | Conewango Group |
| Sub-units | None |
| Thickness | 1 - 4' |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region |  Ohio,  Pennsylvania,  West Virginia |
| Country |  United States |
| Type section | |
| Named for | Amesville, Ohio |
Fossils of Echinoderm, Brachiopod, and Gastropoda are commonly found in the Ames.[2]
Description
The Ames is a thin Marker bed of Limestone and/or Fossiliferous limestone. It marks a transition from a predominantly marine environment to predominantly alluvial environment. The Ames serves as a marker for the boundary for the Casselman Formation and the Glenshaw Formation. [2]
References
- "Geolex — Ames publications". ngmdb.usgs.gov. Retrieved 2023-09-07.
- "Sedimentation in Western Pennsylvania". University of Pittsburgh. September 2023.
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