The BGS Lexicon of Named Rock Units — Result Details

Holt Heath Sand and Gravel Member

Computer Code: HHSG Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Wolstonian Stage (QO) — Wolstonian Stage (QO)
Lithological Description: Gravel overlain by sand; a high proportion of the gravel includes exotic clasts from Scotland, Lake District and Malvern Hills; third terrace of the River Severn, also known as the 'Main Terrace'; part of the Severn Valley Formation. [Generic description: academic papers and BGS Memoirs].
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Severn Valley Formation (SEVN)
Previous Name(s): Holt Heath Sand And Gravel [Obsolete Name And Code: Use HHSG] (HOHE)
Holt Heath Member [Obsolete Name And Code: Use HHSG] (HHTD)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Holt Heath. 
Reference(s):
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. 
Wills, L J, 1938. The Pleistocene development of the Severn from Bridgnorth to the Sea. Quarterly Journal of the Geological Society, 94, 161-242. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E167 E182 E199 E216 E234