The BGS Lexicon of Named Rock Units — Result Details

Laggan Cottage Mudstone Formation

Computer Code: LNT Preferred Map Code: LNT
Status Code: Full
Age range: Visean Stage (CV) — Visean Stage (CV)
Lithological Description: Grey mudstones and sandstones with fossil plant material.
Definition of Lower Boundary: Overlies white sandstones of the Millstone Point Sandstones (member of the Clyde Sandstone Formation).
Definition of Upper Boundary: Contact with overlying lavas and tuffs of the Clyde Plateau Volcanic Formation.
Thickness: 7.1m
Geographical Limits: Northeast Arran (Arran Special Sheet).
Parent Unit: Strathclyde Group (SYG)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Neighbourhood of Laggan Cottage, north-east Arran. 
Reference(s):
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S338 S013