The BGS Lexicon of Named Rock Units — Result Details

Outwoods Breccia Member

Computer Code: OTB Preferred Map Code: OtB
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Grey volcaniclastic sandstones and sediment-clast breccias interbedded with subordinate volcaniclastic mudstone and siltstone.
Definition of Lower Boundary: Probably sharp upon Buck Hills Member, latter comprising blue-grey, thinly bedded volcaniclastic mudstones and siltstones.
Definition of Upper Boundary: Sharply overlain by Bradgate Formation, of blue-grey, laminated volcaniclastic rocks and tuffites.
Thickness: About 115m in Type Area, thinning to south.
Geographical Limits: Mainly occurs in the Outwoods Nature Area and possibly feathers out southwards, on the Charnwood Forest Golf Course.
Parent Unit: Beacon Hill Formation (CMBH)
Previous Name(s): Outwoods Member (-1747)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Outwoods, near Nanpantan. 
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