The BGS Lexicon of Named Rock Units — Result Details

Kirkland Wood Sand And Gravel Member

Computer Code: KWSG Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Clast-supported gravel with subrounded to rounded clasts up to cobble grade of Borrowdale Volcanic Group igneous rocks, siltstone, lithic sandstone; some red sandstone, white sandstone, coal and granite. Sparse (reworked) shell fragments and dinoflagellate cysts present in sandier parts of the unit.
Definition of Lower Boundary: At its type section it overlies till of the Seascale Glacigenic Formation; elsewhere its basal contact is not seen, but the unit occurs stratigraphically above possible Winney Hill Coppice Clay Member of the Aikbank Glacigenic Formation in the Kirkton Wood West Section [log NY00SE(S) ME 166; Nirex Science Report SA/97/045 (Issue 2.0) 1997].
Definition of Upper Boundary: Unconformably overlain by the Drigg Beach Till Member of the the Gosforth Glacigenic Formation, with the uppermost c.0.3m (below the contact) pervasively sheared.
Thickness: 6.8m thick at its type section.
Geographical Limits: 1:50k Sheet 37 Gosforth. Drigg to Santon Bridge area, western Cumbria.
Parent Unit: Gosforth Glacigenic Formation (GOGL)
Previous Name(s): Shelly Sands At 50ft Od (-3989)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Between 13.2 - 20.0m depth in Nirex QBH boreholes 2 and 2a (BGS Registered borehole SD09NE 21) at Hall Carleton, c.1km southeast of Drigg village, Cumbria. 
Reference Section  c.3.1m of sand and gravel with shell fragments exposed near the base of a degraded river cliff in Kirkland Wood, eastern side of River Irt, 600m north of Kirklands Farm, c.1km northeast of Holmrook village, west Cumbria. 
Reference(s):
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 
Nirex Science Report SA/97/038 (Issue 2.0). 1997. Logging and interpretation of Quaternary boreholes (QBH) drilled in the Sellafield area during 1996. 
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