The BGS Lexicon of Named Rock Units — Result Details
Worcester Sand and Gravel Member
Computer Code: | WORT | Preferred Map Code: | symb |
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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: | Severn Valley Formation (SEVN) | ||
Previous Name(s): | Worcester Terrace [Obsolete Name and Code: Use WORT]
(-3768)
Second Terrace Deposits (River Severn) [Obsolete Name and Code: Use WORT] (-4406) Worcester Terrace Deposits [River Severn] [Obsolete Name and Code: Use WORT] (-4981) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Gravel Pit, Grimley, Worcestershire. | ||
Reference(s): | |||
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. | |||
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). | |||
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.] | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E167 E182 E199 E216 E234 |