The BGS Lexicon of Named Rock Units — Result Details
Swithland Formation
| Computer Code: | SWSL | Preferred Map Code: | SG |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Comley Series (EC) — Comley Series (EC) | ||
| Lithological Description: | Purple to grey slaty meta-mudstones and greywackes with thin conglomeratic sandstones. | ||
| Definition of Lower Boundary: | Passes down to coarse-grained greywackes interbedded with silty mudrocks, of the Brand Hills Formation. | ||
| Definition of Upper Boundary: | Not seen or proved in this area. | ||
| Thickness: | 400m+ | ||
| Geographical Limits: | From The Brand/Swithland Wood area, north to Charnwood Forest Golf Course; last seen at Nanpantan. | ||
| Parent Unit: | Brand Group (CBA) | ||
| Previous Name(s): | Swithland Slates [Obsolete Name and Code: Use SWSL]
(-1214)
Swithland Greywacke Formation [Obsolete Name And Code: Use SWSL] (CBSG) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Brand Estate and Swithland Woods. | ||
| Reference Section | Little John area. | ||
| Reference Section | Groby Upper Park. | ||
| Reference(s): | |||
| McIlroy, D, Brasier, M D and Moseley J. 1998. The Proterozoic - Cambrian transition within the 'Charnian Supergroup' of central England and the antiquity of the Ediacara fauna. Journal of the Geological Society of London, Vol. 155, 401 - 413. | |||
| Watts, W W, 1947. Geology of the ancient rocks of Charnwood Forest, Leicestershire. Leicester: Leicester Literary and Philosophical Society. | |||
| Carney, J N. 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. | |||
| Worssam, B C and Old, R A, 1988. Geology of the country around Coalville. Memoir of the British Geological Survey, Sheet 155 (England and Wales) | |||
| Moseley, J and Ford, T D, 1985. A stratigraphic revision of the Late Precambrian rocks of Charnwood Forest, Leicestershire. Mercian Geologist, Vol.10(I), 1-18. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E155 E141 | |||