The BGS Lexicon of Named Rock Units — Result Details

Redheugh Mudstone Formation

Computer Code: REMU Preferred Map Code: REMU
Status Code: Full
Age range: Famennian Age (DA) — Famennian Age (DA)
Lithological Description: Mainly reddish sandy mudstones intercalated with sandstones and subsidiary siltstones. The local basal breccia of conglomerate is exposed at Siccar Point.
Definition of Lower Boundary: Unconformable upon folded Llandovery rocks, well exposed at Siccar Point [NT 812 710].
Definition of Upper Boundary: The base of a predominantly sandstone succession belonging to the Greeenheugh Fomration.
Thickness: Estimated to be about 200 m thick.
Geographical Limits: Southern Uplamnds Terrane of Scotland.
Parent Unit: Stratheden Group (SAG)
Previous Name(s): Upper Old Red Sandstone (Part Of) (-4068)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Redheugh Shore, from Hirst Rocks [NT 8267 7026] to Meikle Poo Craig [NT 822 708] to the east of Cockburnspath. 
Reference(s):
Balin, D F. 1993. Upper Old Red Sandstone sedimentation in the eastern Midland Valley area, Scotland. Unpublished PhD thesis, University of Cambridge. 
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. 
Greig, D C. 1988. Geology of the Eyemouth district. Memoir of the British Geological Survey, Sheet 34 (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S034