The BGS Lexicon of Named Rock Units — Result Details

Rouen Bay Sandstone Member

Computer Code: RBT Preferred Map Code: RBT
Status Code: Full
Age range: Lochkovian Age (DO) — Pragian Age (DP)
Lithological Description: A coarse sand to boulder-sized, massive, angular, very poorly-sorted, conglomerate with clasts of vesicular lava and rare clasts of quartzite and metabasic rock interbedded with a coarse- to very coarse-grained, typically massive, volcaniclastic sandstone. One flow of andesitic lave seen at Whistleberry.
Definition of Lower Boundary: The base of the lowest bed of the poorly-sorted volcaniclastic conglomerate with angular clasts, where this conformably overlies a clast-supported conglomerate with rounded clasts of lava and quartzite, of the undivided Catterline Conglomerate Formation.
Definition of Upper Boundary: The top of the highest bed of very coarse-grained volcaniclastic sandstone with angular clasts, where this is conformably overlain by a clast-supported conglomerate with rounded clasts of lava and quartzite of the undivided Catterline Conglomerate Formation.
Thickness: From 75 m to 115 m thick.
Geographical Limits: Northern Midland Valley, between Braidon Bay [NO 866 773] and Whistleberry [NO 860 753].
Parent Unit: Catterline Conglomerate Formation (CATC)
Previous Name(s): Rouen Formation [Obsolete Name And Code: See WCO] (RNF)
Rouen Bay Tuff Member (-2992)
Alternative Name(s): none recorded or not applicable
Type Section  Foreshore and cliffs from Powdam Head [NO 867 760] to Green Heugh [NO 862 753]. 
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 and Paterson, I B, 1970. The Lower Old Red Sandstone of the Strathmore Region. Report of the Institute of Geological Sciences No.70/12 
Carroll, S. 1994. Geology of the Inverbervie and Catterline district, 1:10 000 sheets NO87NW, NO87NE and NO87SW. British Geological Survey, Technical Report, WA/94/20. 
Haughton, P D W, 1993. Simultaneous dispersal of volcaniclastic and non-volcaniclastic sediment in fluvial basins: examples from the Lower Old Red Sandstone, east-central Scotland. In: Marzo, M and Puigdefabregas, C. (eds) Alluvial Sedimentation. Blackwell Scientific Publications, 451-471. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: