The BGS Lexicon of Named Rock Units — Result Details
Ogof Hen Formation
| Computer Code: | OGH | Preferred Map Code: | OgH |
|---|---|---|---|
| Status Code: | Pending Upgrade | ||
| Age range: | Arenig Series (OR) — Arenig Series (OR) | ||
| Lithological Description: | Sandstones and sandy mudstones; basal conglomerate locally. | ||
| Definition of Lower Boundary: | Unconformable. | ||
| Definition of Upper Boundary: | Not defined. | ||
| Thickness: | Up to 400 metres. | ||
| Geographical Limits: | 1:50,000 Sheet 209 (St.David's) and adjacent Sheet 210. | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Brunel Beds
(BRU)
Porth Gain Beds [Obsolete Name and Code: Use OGH] (-4233) Abercastle Beds [Obsolete Name And Code: Use OGH] (ACA) Brunel Beds (BRU) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| none recorded or not applicable | |||
| Reference(s): | |||
| Kokelaar, B P, Bevins, R E and Roach, R A. 1985. Submarine silicic volcanism and associated sedimentary and tectonic processes, Ramsey Island, south west Wales. Journal of the Geological Society of London, Vol.142 (4-6), 591-617. | |||
| Jenkins, C J. 1979. Not published. Ph.D. Thesis, University of Cambridge. | |||
| Hughes C P, and others. 1982. Abereiddi Bay and the adjacent coast. "In" Bassett, M G. (Editor). Geological excursions in Dyfed, south-west Wales. p.51-63. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E209 E210 | |||