| Ames Limestone | |
|---|---|
| Stratigraphic range: Carboniferous ~303.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
.jpg) 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 |
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.
Fossils of Echinoderm, Brachiopod, and Gastropoda are commonly found in the Ames.
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.
References
- "Geolex — Ames publications". ngmdb.usgs.gov. Retrieved 2023-09-07.
- ^ "Sedimentation in Western Pennsylvania". University of Pittsburgh. September 2023.