The BGS Lexicon of Named Rock Units — Result Details

Wellington Crag Sandstone [Obsolete Name And Code: Use ACHS]

Computer Code: WCR Preferred Map Code: WCr
Status Code: Index Level
Age range: Chokierian Substage (CH) — Alportian Substage (CO)
Lithological Description: Sandstone, medium to coarse-grained, cross-bedded; seatearth at top.
Definition of Lower Boundary: Abrupt change from siltstones of Crossdale Mudstone to sandstone.
Definition of Upper Boundary: Top of seatearth sandstone; dark grey mudsone of the Dolphinholme Mudstone above.
Thickness: 35m-60m.
Geographical Limits: Ellel and Forton, Lancashire.
Parent Unit: Samlesbury Formation (SAML)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  50m north of Wellington Crag Farm. 
Reference(s):
Aitkenhead, N, Bridge, D M, Riley, N J and Kimbell, S F. 1992. Geology of the country around Garstang. Memoir of the British Geological Survey, Sheet 67 (England and Wales) 
Wilson, A A, Brandon, A and Johnson, E W, 1989. Abbeystead: Geological context of the Wyresdale Tunnel methane explosion. Technical Report of the British Geological Survey WA/89/30. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E067 E059