The BGS Lexicon of Named Rock Units — Result Details
Great Easby Clay Formation
Computer Code: | GECL | Preferred Map Code: | GE |
---|---|---|---|
Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
Lithological Description: | Dark reddish brown clay, silt and very fine-grained sand, generally thinly laminated and locally varved. Sparse dropstones. | ||
Definition of Lower Boundary: | Unconformable boundary with red diamicton of the underlying Gillcambon Till Formation, or on bedrock. | ||
Definition of Upper Boundary: | Generally a sharp, planar, or gradational glacitectonic boundary with red diamicton correlated with the Plumpe Bridge Till Member of the Gretna Till Formation. | ||
Thickness: | 10m or more. | ||
Geographical Limits: | The Solway Lowlands around Carlisle. | ||
Parent Unit: | Irish Sea Coast Glacigenic Subgroup (ISCG) | ||
Previous Name(s): | Glaciolacustrine deposits
(GLLD)
Glaciolacustrine deposits (GLLD) |
||
Alternative Name(s): | Great Easby Member |
||
Stratotypes: | |||
Type Section | River cliff sections in the southern bank of the River Irthing. 3km northeast of Brampton, Cumbria. Huddart (1970), Huddart and Glasser (2002). | ||
Reference(s): | |||
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. | |||
Trotter, F M and Hollingworth, S E. 1932. The geology of the Brampton District. Memoir of the Geological Survey, Sheet 18. | |||
Huddart, D. 1970. Aspects of glacial sedimentation in the Cumberland lowland. Unpublished PhD thesis, University of Reading. | |||
Huddart, D and Glasser, N F (editors). 2002. Quaternary of Northern England. Geological Conservation Review Series, No.25. [Peterborough: Joint Nature Conservation Committee.] 745pp. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
none recorded or not applicable |