Guelph Formation
The Guelph Formation is a geologic formation in New York. It preserves fossils dating back to the Silurian period.
| Guelph Formation | |
|---|---|
| Stratigraphic range: Silurian | |
 Stromatolite from the Guelph Formation | |
| Type | Formation |
| Underlies | Vernon, Lockport Group |
| Overlies | Eromosa |
| Lithology | |
| Primary | Dolomite |
| Location | |
| Region |  New York |
| Country |  United States |
| Type section | |
| Named for | City of Guelph |
References
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