The BGS Lexicon of Named Rock Units — Result Details

Caban Conglomerate Formation

Computer Code: CBN Preferred Map Code: Cbn
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Llandovery Epoch (SL)
Lithological Description: Massive to thick-bedded conglomerates with subordinate beds of pebbly coarse sandstone.
Definition of Lower Boundary: Not defined.
Definition of Upper Boundary: Not defined.
Thickness: Not defined.
Geographical Limits: Central Wales.
Parent Unit: Not Available (!)
Previous Name(s): Caban Conglomerate Formation (formerly Facies) [Obsolete Name and Code: Use CBN] (-2670)
Drygarn Conglomerate [Obsolete Name and Code: Use CBN] (-2671)
[Obsolete Code: Use CBN] (*46)
Caban Conglomerates [Obsolete Name and Code: Use CBN] (-2059)
Drygarn Conglomerate [Obsolete Name And Code: Use CBN] (DNC)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Quarry at north-east end of Caban-coch Reservoir, Rhayader. 
Reference(s):
Lapworth, H, 1900. The Silurian sequence at Rhayader. Quarterly Journal of the Geological Society, Vol.56, p.67-137. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E179 E195