The BGS Lexicon of Named Rock Units — Result Details

Worcester Member

Computer Code: WORT Preferred Map Code: symb
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Cross bedded gravels and sands; pebbles mostly Triassic quartzites, together with flints 'Irish Sea erratics' and others, including Jurassic and "Malvernian" clasts.
Definition of Lower Boundary: Where river deposits overlie bedrock.
Definition of Upper Boundary: The present day terrace surface.
Thickness: Up to 10m+
Geographical Limits: River Severn Basin - Bridgnorth To Chepstow.
Parent Unit: Not Entered (?)
Previous Name(s): Worcester Terrace Deposits [River Severn] (-4981)
Worcester Terrace (-3768)
Second Terrace Deposits (River Severn) (-4406)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Gravel Pit, Grimley, Worcestershire. 
Reference(s):
Dawson, M R. 1989. The Severn valley south of Bridgnorth. 78-100 in Keen, D H (Editor), The Pleistocene of the West Midlands. Field Guide. [Cambridge: Quaternary Research Association.] 
Wills, L J, 1938. The Pleistocene development of the Severn from Bridgnorth to the Sea. Quarterly Journal of the Geological Society, 94, 161-242. 
Barclay, W J, Ambrose K, Chadwick, R A and Pharaoh, T C. 1997. Geology of the country around Worcester. Memoir of the British Geological Survey, Sheet 199 (England and Wales). 
Maddy, D, Green, C P, Lewis, S G and Bowen, D Q. 1995. Pleistocene Geology of the lower Severn Valley, UK. Quaternary Science Reviews, Vol 14, 209 - 222. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E167 E182 E199 E216 E234