The BGS Lexicon of Named Rock Units — Result Details

Crychan Formation

Computer Code: CRYH Preferred Map Code: CcF
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Llandovery Epoch (SL)
Lithological Description: none recorded or not applicable
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Not Applicable (-)
Previous Name(s): Cwm Crychan Formation [Obsolete Name And Code: Use TRE, and BRNY or CRYH as appropriate to the area] (CWCR)
(Sandstone In) Cwm Crychan Formation (-2727)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable