The BGS Lexicon of Named Rock Units — Result Details

Cumbrian Esk Valley Formation

Computer Code: CEVY Preferred Map Code: notEntered
Status Code: Full
Age range: Holocene Epoch (QH) — Holocene Epoch (QH)
Lithological Description: Sands, gravels, silts and clays forming river terraces and underlying floodplains of the Cumbrian Esk catchment.
Definition of Lower Boundary: Sharply erosional, unconformable on all older Quaternary deposits (particularly till) and bedrock.
Definition of Upper Boundary: The ground surface, or overlain by peat of the Blelhem Peat Formation, or overlain by blown sand of the Drigg Point Sand Formation.
Thickness: 11.58m thick at Partial Type Section, but probably typically 5-10m thick in the type area.
Geographical Limits: 1:50k Sheet 37 Gosforth, south of Muncaster Fell.
Parent Unit: Cumbria-Lancashire Catchments Subgroup (CLCA)
Previous Name(s): Alluvium And River Terrace Deposits (-2681)
Alluvial Fan Deposits (ALF)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Muncaster Bridge Borehole 1 (BGS Registered Borehole SD19NW/1), from 0.0 to 11.58m depth, southern side of River Esk, c 1km east of Muncaster Castle, west Cumbria. 
Type Area  Alluvium and river terraces within the valley of the Cumbrian River Esk, between Muncaster Castle and Lindbeck farm, west Cumbria. 
Reference(s):
Trotter, F M, Hollingworth, S E, Eastwood T and Rose, W C C. 1937. Gosforth District. Geological Survey Memoir, England and Wales, Sheet 37. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable