Derfel Limestone
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| Derfel Limestone | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | Wales |
| Country | United Kingdom |
The Derfel Limestone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
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