The BGS Lexicon of Named Rock Units — Result Details

Cowie Harbour Siltstone Member

Computer Code: CHSI Preferred Map Code: CHSI
Status Code: Full
Age range: Homerian Age (SH) — Gorstian Age (SG)
Lithological Description: A fine- to medium-grained lithic sandstone interbedded with minor amounts of conglomerate and siltstone.
Definition of Lower Boundary: Grey, cross-laminated sandy siltstones of the Cowie Harbour Siltstone Member overlying red, trough cross-bedded medium-grained sandstone of the Red Sandstone Member
Definition of Upper Boundary: Grey, laminated sandy siltstones overlain by red, trough, cross-bedded and horizontally-laminated, medium-grained sandstone of the Carron Sandstone Formation.
Thickness: From 36 m to 90 m thick.
Geographical Limits: Stonehaven area.
Parent Unit: Cowie Sandstone Formation (CWE)
Previous Name(s): Dictyocaris Member (Obsolete Name And Code: Use CHSI) (-128)
Replaced By Cowie Harbour Siltstone Member (*142)
Cowie Harbour Fish-Bed [Obsolete Name And Code: Use CHSI] (CWFB)
Dictyocaris Member [Obsolete Name And Code: Use CHSI] (DICT)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Foreshore at Cowie Harbour. 
Reference(s):
Campbell, R, 1913. The geology of south-eastern Kincardineshire. Transactions of the Royal Society of Edinburgh, Vol.48, pp.923-960. 
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. 
Hickling, G, 1908. The Old Red Sandstone of Forfarshire Geological Magazine, Vol.5 (new series) p.396-408. 
Westoll, T S, 1945. A new cephalaspid fish from the Downtonian of Scotland.Transactions of the Royal Society of Edinburgh, Vol.61, p.341-357. 
Campbell, R, 1912. Cambrian, Downtonian and Lower Old Red Sandstone rocks near Stonehaven. Proceedings of the Geologists' Association, Vol.23, 296. 
Marshall, J E A, 1991. Palynology of the Stonehaven Group, Scotland: Evidence for a mid-Silurian age and its geological implications. Geological Magazine, Vol.128 (3), p.283-286. 
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
Armstrong, M, Donovan, R M and Paterson, I B, 1978. Angus and Kincardine. In Friend, P F and Williams, B P J (editors), A field guide to selected outcrop areas of the Devonian of Scotland, the Welsh Borderland and South Wales. Palaeontological Association. 
Wellman, C, 1993. A land plant microfossil assemblage of Mid Silurian age from the Stonehaven Group, Scotland. Journal of Micropalaeontology, Vol.12, 47-66. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S067 S066