The BGS Lexicon of Named Rock Units — Result Details
Cademan Volcanic Breccia Member
Computer Code: | CVB | Preferred Map Code: | CVB |
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Status Code: | Full | ||
Age range: | Ediacaran Period (AD) — Ediacaran Period (AD) | ||
Lithological Description: | Massive volcanic block-breccia comprising angular to sub-rounded andesitic to dacitic blocks in a crystal-lapilli matrix. | ||
Definition of Lower Boundary: | Not seen, but mapping shows unit to be spatially associated with the Grimley Andesite, with which it may in part be gradational. | ||
Definition of Upper Boundary: | Not seen, but mapping shows unit to be spatially associated with the Grimley Andesite, with which it may in part be gradational. | ||
Thickness: | 0-450m | ||
Geographical Limits: | North-western Charnwood Forest, between High Cademan and Grace Dieu Wood. | ||
Parent Unit: | Charnwood Lodge Volcanic Formation (CMCL) | ||
Previous Name(s): | Whitwick Volcanic Complex
(WVO)
Whitwick Volcanic Complex (WVO) |
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Alternative Name(s): | Whitwick Volcanic Complex |
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Stratotypes: | |||
Type Area | Grace Dieu Wood to High Cademan. | ||
Reference(s): | |||
Carney, J N. 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. | |||
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: | |||
E141 |