Dolhir Formation
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TypeFormation
UnderliesMudstones of the Fron Frys Formation.
OverliesUnconformable on various Caradoc Formations.
Thickness490 metres. Lateral variations, 320 - 490 metres.
| Dolhir Formation | |
|---|---|
| Stratigraphic range: Ashgill Series | |
| Type | Formation |
| Underlies | Mudstones of the Fron Frys Formation. |
| Overlies | Unconformable on various Caradoc Formations. |
| Thickness | 490 metres. Lateral variations, 320 - 490 metres. |
| Location | |
| Region | Wales |
| Country | United Kingdom |
| Extent | Not defined |
The Dolhir Formation is a geologic formation in Wales. It preserves fossils dated to the Ordovician period.
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