| Nant Ffrancon Formation Stratigraphic range: Ordovician | |
|---|---|
| Type | Formation |
| Location | |
| Coordinates | 53°13′45″N4°05′02″W / 53.2292°N 4.0839°W Coordinates: 53°13′45″N4°05′02″W / 53.2292°N 4.0839°W |
| Region | Wales |
| Country |  United Kingdom |
The Nant Ffrancon Fermation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Llanfallteg Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. It predominantly consists of ash containing siltstones, as wells as ash fall deposits and tuffs. It likely dates to the Darriwilian based on graptolites. The local graptolite fauna includes Didymograptus artus and Glossograptus armatus. The local trilobite fauna includes agnostids, phacopids and asaphids.
The Trefawr Formation is a geologic formation in Wales. It preserves fossils dating back to the Silurian period.
The Hughley Shale is a geologic formation in Wales. It preserves fossils dating back to the Silurian period.
The Derfel Limestone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Llanfawr Mudstone is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Glyn Gower Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Builth Volcanic is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Rhiwlas Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Llyn y Gafr Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Blaencediw Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period.
The Senni Beds is the former name of the Senni Formation in Wales. It preserves fossils dating back to the Devonian period.
The St. Maughan's Formation is a geologic formation in Wales. It preserves fossils dating back to the Devonian period.
The Ffestiniog Flags is a geologic formation in Wales. It preserves fossils dating back to the Cambrian period.
The Llanelly Formation is a geologic formation in Wales. It preserves fossils dating back to the Carboniferous period.
The Spring Quarry Limestone is a geologic formation in Wales. It preserves fossils dating back to the Carboniferous period.
The Foel Formation is a geologic formation in Wales. It preserves fossils dating back to the Carboniferous period.
The Gronant Formation is a geologic formation in Wales. It preserves fossils dating back to the Carboniferous period.
The High Tor Limestone is a geologic formation in Wales. It preserves fossils dating back to the Carboniferous period.
The Nant Hir Group is a geologic group in Wales. It preserves fossils dating back to the Ordovician period.
The Aran Volcanic Group is a geologic group in Wales. It preserves fossils dating back to the Ordovician period.
 | This article about a specific stratigraphic formation in the United Kingdom is a stub. You can help Wikipedia by expanding it. |
 | This Wales-related article is a stub. You can help Wikipedia by expanding it. |
