The BGS Lexicon of Named Rock Units — Result Details

Grange-Over-Sands Formation

Computer Code: GROS Preferred Map Code: notEntered
Status Code: Full
Age range: Holocene Epoch (QH) — Holocene Epoch (QH)
Lithological Description: Probably silt, clay and sand, with gravel and peat.
Definition of Lower Boundary: Probably overlies bedrock or sediments of the Irish Sea Coastal Glacigenic Subgroup.
Definition of Upper Boundary: Ground surface.
Thickness: At least 12m
Geographical Limits: Estuarine and alluvial deposits in the Cumbrian part of Morecambe Bay.
Parent Unit: British Coastal Deposits Group (COAS)
Previous Name(s): Grange Formation (-4073)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Grange-over-Sands, Morecambe Bay. Huddart et al. 1977 
Reference(s):
Thomas, G S P. 1999. Northern England. 91-98 in Bowen, D Q (Editor), A revised correlation of Quaternary and Neogene deposits in the British Isles. Geological Society Special Report No.23. 
Huddart, D, Tooley, M J and Carter, P A. 1977. The coasts of northwest England. 119-154 in Kidson, C and Tooley, M J (editors), The Quaternary History of the Irish Sea. Geological Journal Special Issue No.7. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable