The BGS Lexicon of Named Rock Units — Result Details

Birchwood Semipelite Formation

Computer Code: BIWS Preferred Map Code: symb
Status Code: Pending Upgrade
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Pelite and semipelite with subsidiary calcsilicate-rock and quartzite.
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: Ballachulish Subgroup (DABH)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Smith, C G, Goodman, S and Robertson S. 2003. Geology of the Ballater district. Memoir of the British Geological Survey, Sheet 65E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S065 S065