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:
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. 
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(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