The BGS Lexicon of Named Rock Units — Result Details

Gafallt Shales Facies (Caban Conglomerate Formation)

Computer Code: GA Preferred Map Code: Ga
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Llandovery Epoch (SL)
Lithological Description: Thinly interbedded turbidite mudstones and burrowed hemipelagites with scattered thin turbidite sandstones.
Definition of Lower Boundary: N/A.
Definition of Upper Boundary: N/A.
Thickness: N/A.
Geographical Limits: Central Wales.
Parent Unit: Caban Conglomerate Formation (CBN)
Previous Name(s): Gafallt Shales (-2810)
Gafallt Shales Facies Formation (-269)
Alternative Name(s): none recorded or not applicable
Type Section  Cutting at rear of Water Treatment Works, Elan Valley, Rhayader. 
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: