The BGS Lexicon of Named Rock Units — Result Details

Glenmard Mudstone Member

Computer Code: GMD Preferred Map Code: GMD
Status Code: Full
Age range: Ashgill Series (OA) — Ashgill Series (OA)
Lithological Description: At least four discrete mudflows, with olistoliths of green mudstones, rottenstone and shelly debris, separated by bedded mudstone and thinly bedded sandstone.
Definition of Lower Boundary: Base of lowest mudflow unit with olistoliths.
Definition of Upper Boundary: Succeeded by normal bedded mudstones of the Quarrel Hill Formation.
Thickness: c.20m
Geographical Limits: Girvan area, southwest Scotland.
Parent Unit: Quarrel Hill Formation (QHF)
Previous Name(s): Lower Mudstones (-936)
Alternative Name(s): none recorded or not applicable
Type Section  Glenmard Quarry, Craighead Inlier, Girvan. Harper, 1982. 
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
Harper, D A T, 1982. The stratigraphy of the Drummock Group (Ashgill), Girvan. Geological Journal, Vol.17, p.251-277.l. 17 251-277 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable