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Geological formation in New York and in Ontario, Canada From Wikipedia, the free encyclopedia
The Guelph Formation is a geologic formation in New York and in Ontario, Canada. It preserves fossils dating back to the Silurian period.[2]
| Guelph Formation | |
|---|---|
| Stratigraphic range: Silurian | |
Stromatolite from the Guelph Formation | |
| Type | Sedimentary |
| Underlies | Vernon, Lockport Group |
| Overlies | Eramosa Member |
| Thickness | 160 feet[1] |
| Lithology | |
| Primary | Dolomite |
| Location | |
| Region |  New York |
| Country |  United States |
| Type section | |
| Named for | Guelph, Ontario |
| Named by | William Edmond Logan[1] |
Fossils within the formation include:[1]
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