The BGS Lexicon of Named Rock Units — Result Details

Drigg Beach Till Member

Computer Code: DBTI Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Dusky red stiff plastic silty and clayey diamicton with well dispersed sand grains and angular clasts (up to 30mm) of Borrowdale Volcanic Group rocks, Skiddaw Group siltstones and sandstones; some granite, red and white sandstone; sparse shell fragments. Rip-up clasts of underlying units common.
Definition of Lower Boundary: Generally planar subhorizontal unconformity generally on the Kirkland Wood Sand and Gravel Member of the Gosforth Glacigenic Formation.
Definition of Upper Boundary: Overlain by the erosional base of the Drigg Holm Sand Member of the Gosforth Glacigenic Formation and by Holocene peat in a hollow on the foreshore at Barn Scar.
Thickness: 1.07m thick at its type section.
Geographical Limits: 1:50k Sheet 37 Gosforth, Drigg area, Western Cumbria.
Parent Unit: Gosforth Glacigenic Formation (GOGL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  BNFL Drigg Offsite Borehole E, from 9.31 to 10.38m depth, sited at back of sea cliff behind Drigg beach, c.1.5km westsouthwest of Drigg village, Cumbria. Nirex Science Report SA/97/045 (Issue 2.0) 1997. 
Partial Type Section  BNFL Drigg Offsite Borehole C from 2.0-10.6m depth, 1.2km southwest of Drigg village, Cumbria. Nirex Science Report SA/97/045 (Issue 2.0) 1997. 
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. 
Merritt, J W and Auton, C A. 1997. Quaternary lithostratigraphy of the Sellafield district. Nirex Science Report SA/97/045 (Issue 2.0). [Report prepared for UK Nirex Ltd. 69pp, 5 tables, 20 figures, 14 enclosures and one appendix.] 
Merrit, J W and Auton, C A. 2000. An outline of the lithostratigraphy and depositional history of Quaternary deposits in the Sellafield district, west Cumbria. Proceedings of the Yorkshire Geological Society, Vol.53, 129-154 
Auton, C A and Merritt, J W. 2004. Geological summary report: A review of onshore evidence of Lateglacial and Holocene sea level change in the St Bees-Sellafield area. British Geological Survey Report EE03_0870 for Halcrow H and S Limited. 49pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable