The BGS Lexicon of Named Rock Units — Result Details

Greystoke Till Formation

Computer Code: GYTI Preferred Map Code: GY
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Grey stony sandy clay diamicton with clasts of Lake District volcanoclistic rocks and Carboniferous Limestone. Contains rip-up clasts of underlying Gillcambon Till at Type Section. Elsewhere in Edenside the unit contains relatively more Permo-Triassic red sandstone and Carboniferous sandstones.
Definition of Lower Boundary: Planar or uneven unconformable boundary with red diamicton of the Gillcambon Till Formation below, or unconformable on bedrock.
Definition of Upper Boundary: At land surface or overlain unconformably by glaciofluvial/glaciolacustrine or Flandrian sediments.
Thickness: 10m
Geographical Limits: The Vale of Eden and southern Solway Lowlands north of the "Scottish Readvance" limit.
Parent Unit: Central Cumbria Glacigenic Subgroup (CCGL)
Previous Name(s): Main Late Devensian Till Of The Vale Of Eden (-1581)
Alternative Name(s): Eden Member
Stratotypes:
Type Section  West Bank of Gillcambon Beckm 275, above the road bridge. Eastwood et al (1968). 
Reference(s):
Eastwood,T, Hollingworth, S E, Rose, W C C and Trotter, F M. 1968. Geology of the country around Cockermouth and Caldbeck. Memoir of the Geological Survey of Great Britain, England and Wales, Sheet 23. 
Trotter, F M and Hollingworth, S E, 1932. The glacial sequence in the North of England. Geological Magazine, Vol.69, 374-380. 
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. 
Trotter, F M. 1929. The glaciation of the Eastern Edenside, the Alston Block, and the Carlisle Plain. Quarterly Journal of the Geological Society of London, Vol.85, 549-612. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable