The BGS Lexicon of Named Rock Units — Result Details
Holt Heath Sand and Gravel Member
| Computer Code: | HHSG | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| 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 Member [Obsolete Name And Code: Use HHSG]
(HHTD)
Holt Heath Sand And Gravel [Obsolete Name And Code: Use HHSG] (HOHE) |
||
| 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). | |||
| 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). | |||
| 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 | |||