The BGS Lexicon of Named Rock Units — Result Details

Strathclyde Group

Computer Code: SYG Preferred Map Code: SYG
Status Code: Full
Age range: Chadian Substage (CI) — Brigantian Substage (CX)
Lithological Description: Sandstone, siltstone, mudstone and seatrock, with some coal seams, ironstones and limestones; non-marine faunas common; marine faunal bands rare except in top part.
Definition of Lower Boundary: In west at base of Clyde Plateau Volcanic Formation; in east at base of Gullane Formation or Arthur's Seat Volcanic Formation. Conformable or (locally) unconformable.
Definition of Upper Boundary: Conformable at base of Lower Limestone Formation.
Thickness: To c.1500m
Geographical Limits: Midland Valley of Scotland.
Parent Unit: Not Applicable (-)
Previous Name(s): Lower Oil Shale Group [Obsolete Name And Code: See SYG] (LRO)
Upper Oil Shale Group [Obsolete Name And Code: See SYG] (URO)
Oil-Shale Group (-2468)
Calciferous Sandstone Measures [Obsolete Name And Code: See SYG] (CSM)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Glasgow area, Strathclyde, Scotland. (Ref Sections: See Type Sections of components: Clyde Plateau Volcanic, Kirkwood, Lawmuir, Gullane, Aberlady, West Lothian Oil-Shale, Arthurs' Seat Volcanic and Garleton Hills Volcanic formations). 
Reference Section  Coastal sections, east Fife: Pathhead Beds, Sandy Craig Beds, Pittenweem Beds, Anstruther Beds, Fife Ness Beds. 
Reference(s):
MacGregor, A G, 1960. Division of the Carboniferous on Geological Survey Scottish Maps. Bulletin of the Geological Survey of Great Britain, No.16, 127-130. 
Paterson, I B and Hall, I H S, 1986. Lithostratigraphy of the late Devonian and early Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Report, 18/3. 
Chisholm, J I, MacAdam, A D, Brand, P J. 1989. Lithostratigraphical classification of Upper Devonian and Lower Carboniferous rocks in the Lothians. British Geological Survey Technical Report, WA/89/26. 
Forsyth, I H and Chisholm, J I, 1977. The geology of east Fife. Memoirs of the Geological Survey of Great Britain. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S008 S015 S025 S024 S023 S024 S033 S021 S049 S030 S030 S039 S040 S041