The BGS Lexicon of Named Rock Units — Result Details

Catterline Conglomerate Formation

Computer Code: CATC Preferred Map Code: CATC
Status Code: Full
Age range: Lochkovian Age (DO) — Pragian Age (DP)
Lithological Description: A bimodal, clast-supported conglomerate with clasts mainly of lava, but also containing psammite, quartzite, vein-quartz and feldspar porphyry in a medium-grained lithic sandstone matrix, with single flows of andesite and three sandstone members.
Definition of Lower Boundary: Conformable upon the eroded top of the highest lava flow of the Crawton Volcanic Formation.
Definition of Upper Boundary: Conformable and diachronous, north and south of the Bervie Bay Fault. The formation passes laterally westwards and northwards into the lavas of the Montrose Volcanic Formation.
Thickness: From 870 m to 1080 m thick, Carroll 1995a.
Geographical Limits: From Gourdon to Stonehaven.
Parent Unit: Arbuthnott-Garvock Group (ATGK)
Previous Name(s): Johnshaven and Rouen Formations [Obsolete Name and Code: Use CATC] (-3903)
Chapel Den Conglomerate Formation [Obsolete Name And Code: See CATC] (CDC)
Johnshaven Formation [Obsolete Name And Code: See CATC] (JNF)
Braidon Bay Conglomerate Member [Obsolete Name And Code: See CATC] (BBCO)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Foreshore and cliffs form Crawton Bay[NO 8775 7962] to Whistleberry. 
Reference(s):
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. 
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 
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. 
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:
S067 S066