The BGS Lexicon of Named Rock Units — Result Details

Underset Chert

Computer Code: UNC Preferred Map Code: UnC
Status Code: Pending Upgrade
Age range: Brigantian Substage (CX) — Brigantian Substage (CX)
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: Alston Formation (AG)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Dunham, K C, and Wilson, A A. 1985. Geology of the Northern Pennine Orefield: Volume 2, Stainmore to Craven. Econ. Mem. Br. Geol. Surv., Sheets 40, 41, 50, and parts of 31, 32, 51, 60 and 61, New Series. 
Wells, A J, 1957. The stratigraphy and structure of the Middleton Tyas-Sleightholme Anticline, North Yorkshire. Proceedings of the Geologists' Association. Vol.68. 231-254. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E040