The BGS Lexicon of Named Rock Units — Result Details

Passage Formation

Computer Code: PGP Preferred Map Code: PGP
Status Code: Full
Age range: Arnsbergian Substage (CG) — Langsettian Substage (CA)
Lithological Description: Cyclic: including coarse sandstones and seatearths. See NOTE relating to lithological description of Lower Limestone Formation [LLGS].
Definition of Lower Boundary: Top of Castlecary Limestone.
Definition of Upper Boundary: Base of Coal Measures (base of Lowstone Marine Band in type section).
Thickness: 357.1m in type section.
Geographical Limits: Central Scotland.
Parent Unit: Clackmannan Group (CKN)
Previous Name(s): Passage Group (-4194)
Happendon Limestones [Obsolete Name And Code: Subsumed Within PGP] (HALG)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Airth Borehole (NS88NE/148) from 96.8 to 453.9m. 
Reference(s):
North American Commission on Stratigraphic Nomenclature, 1983. North American Stratigraphic Code. American Association of Petroleum Geologists, Bulletin 67, No. 5, p. 841-875. 
Ramsbottom, W H C, Calver, M A, Eagar, R M C, Hodson, F, Holliday, D W, Stubblefield, C J and Wilson, R B. 1978. A correlation of the Silesian rocks in the British Isles. Geological Society of London, Special Report No.10. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S012 S015 S023 S013 S031 S031 S015 S338 S014 S023 S033 S032 S040 S030 S039 S040 S041