The BGS Lexicon of Named Rock Units — Result Details
Bradgate Formation
| Computer Code: | CMBT | Preferred Map Code: | BT |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Ediacaran Period (AD) — Ediacaran Period (AD) | ||
| Lithological Description: | Thinly-bedded and laminated mudstones, siltstones and sandstones, locally tuffaceous; minor interbeds of vitric tuff and volcanic breccia; generally the sequence fines upwards. | ||
| Definition of Lower Boundary: | Sharp, or gradational over c.1m on underlying sandstones and breccias of the Outwoods Breccia Member to the east, or on lapilli tuffs and volcanic breccias of the Charnwood Lodge Formation to the west. | ||
| Definition of Upper Boundary: | Fines upwards, then overlain sharply and possibly unconformably by Brand Group, consisting of small-pebble conglomerate or volcaniclastic sandstone in the Hanging Rocks Conglomerate Formation (formerly Member). | ||
| Thickness: | At least 175m | ||
| Geographical Limits: | The unit is distributed along the eastern and western flanks of the Charnwood anticline from Outwoods to Bradgate Park and Warren Hills. | ||
| Parent Unit: | Maplewell Group (CMV) | ||
| Previous Name(s): | Woodhouse and Bradgate Tuffs Formation [Obsolete Name and Code: Use CMBT]
(-3948)
Bradgate Tuff Formation [Obsolete Name And Code: Use CMBT] (BRTU) Woodhouse and Bradgate Beds [Obsolete Name and Code: Use CMBT] (-2708) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | (West). Warren Hill. | ||
| Type Section | Bradgate Park. | ||
| Reference Section | Hangingstone Hills. | ||
| Reference(s): | |||
| 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. | |||
| Carney, J N. 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. | |||
| Watts, W W, 1947. Geology of the ancient rocks of Charnwood Forest, Leicestershire. Leicester: Leicester Literary and Philosophical Society. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E155 E141 | |||