The BGS Lexicon of Named Rock Units — Result Details

South Quarry Breccia Member

Computer Code: SQBR Preferred Map Code: SQB
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Volcaniclastic slump-breccia, composed of folded and contorted fine-grained laminated siltstone rafts in a coarse, grey, crystal-rich volcaniclastic matrix.
Definition of Lower Boundary: Member locally developed at the top of the Ives Head Formation; planar and probable conformable base on grey, laminated, volcaniclastic siltstones and sandstones of the Ives Head Formation (undivided).
Definition of Upper Boundary: Overlain by the Blackbrook Reservoir Formation, consisting in its lower part of greenish grey, laminated volcaniclastic siltstone.
Thickness: About 31m
Geographical Limits: Charnwood Forest area, Central England.
Parent Unit: Ives Head Formation (IVH)
Previous Name(s): One Barrow Breccia (-3692)
One Barrow Breccia Member [Obsolete Name And Code: Use SQBR] (CLOB)
South Quarry Slump Breccia Member (-2444)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  One Barrow Plantation. 
Reference Section  Moult Hill. 
Reference(s):
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. 
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) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable