The BGS Lexicon of Named Rock Units — Result Details

Woolridge Member

Computer Code: WDGE Preferred Map Code: notEntered
Status Code: Full
Age range: Pleistocene Epoch (QP) — Pleistocene Epoch (QP)
Lithological Description: Sandy, clayey coarse-grained gravel, predominantly 'bunter' quartzite pebbles with 5-10% flints and rare Malvernian, Lower Palaeozoic and igneous clasts. Inferred to be glaciofluvial outwash.
Definition of Lower Boundary: Gravel overlying till correlated with the Thrussington Member, or bedrock.
Definition of Upper Boundary: Present day ground level.
Thickness: Variable, up to 2 m.
Geographical Limits: Isolated outliers on high ground, 80-85 m above OD, near the River Severn, 10-13 km west of Cheltenham.
Parent Unit: Wolston Formation (WOLS)
Previous Name(s): Woolridge Gravels (-603)
Woolridge Terrace (-4394)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Woolridge Inferred to be glaciofluvial outwash. 
Reference(s):
Maddy, D. 1999. English Midlands Chapter 3 in Bowen, D Q (Editor), A revised correlation of the Quaternary deposits in the British Isles. Geological Society Special Report, No.23. 
Barclay, W J, Brandon, A, Ellison, R A and Moorlock, B S P. 1992. A Middle Pleistocene palaeovalley-fill west of the Malvern Hills. Journal of the Geological Society of London, Vol. 149, 75-92. 
Wills, L J, 1938. The Pleistocene development of the Severn from Bridgnorth to the Sea. Quarterly Journal of the Geological Society, 94, 161-242. 
Worssam, B C, Ellison, R A and Moorlock, B S P. 1989. Geology of the country around Tewkesbury. Memoir of the British Geological Survey, Sheet 216 (England and Wales). 
Hey, R W. 1958. High-level gravels in and near the lower Severn Valley. Geological Magazine, Vol. 95, 161-168. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216