The BGS Lexicon of Named Rock Units — Result Details

Upper Long Sands Sandstone Member

Computer Code: ULSA Preferred Map Code: ULSM
Status Code: Full
Age range: Pragian Age (DP) — Emsian Age (DE)
Lithological Description: Sandstone of variable type, thin to thick beds, fine- to coarse-grained, fossiliferous with siltstone interbeds. Limestone beds up to 0.5m are present through the upper part of the member.
Definition of Lower Boundary: Not exposed in type section or elsewhere. (Type section chosen because it is the only place where the lithology can be fully seen).
Definition of Upper Boundary: Faulted out.
Thickness: c.100m
Geographical Limits: Mapped on geological sheet 348 (Plymouth). May also occur on sheets 349, 350, 355 and 356.
Parent Unit: Bovisand Formation (BOV)
Previous Name(s): Meadfoot Beds (-76)
Alternative Name(s): none recorded or not applicable
Type Section  Cliff section. 180m of cliff at south-eastern end of Londsands Beach. 
Leveridge B E, Holder, M T, Goode, A J J, Scrivener R C, Jones N S and Merriman, R J. 2002. Geology of the Plymouth and south-east Cornwall area. Memoir of the British Geological Survey, Sheet 348 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: