The BGS Lexicon of Named Rock Units — Result Details

Brown And Grey Sandstone Member

Computer Code: BRGS Preferred Map Code: BRGS
Status Code: Full
Age range: Wenlock Epoch (SW) — Ludlow Epoch (SU)
Lithological Description: Soft brown, grey and green, locally pebbly medium-grained quartzo-feldspathic sandstone. Volcaniclastic detritus makes its first appearance in this member.
Definition of Lower Boundary: The base lies at the top of the highest metre-thick red siltstone bed in the Castle of Cowie Member.
Definition of Upper Boundary: At the base of the lowest exposed bed of pebbly volcaniclastic sandstone in the overlying Cowie Harbour Conglomerate Member.
Thickness: 233m minimum
Geographical Limits: Stonehaven area.
Parent Unit: Cowie Sandstone Formation (CWE)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Coastal section at Cowie Harbour. 
Reference(s):
Armstrong, M, Donovan, R M, and Paterson, I B. 1978. Angus and Kincardine. In A field guide to selected outcrop areas of the Devonian of Scotland, the Welsh Borderland and South Wales. Friend, P F, and Williams, B P J (editors). Palaeontological Association. 
Carroll, S, 1994. Geology of the Stonehaven District. 1:10 000 Sheets NO88NW, NO88NE, NO88SW and NO88SE. British Geological Survey Technical Report WA/94/19. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable