The BGS Lexicon of Named Rock Units — Result Details
Burford Coal Member
| Computer Code: | BRFC | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Asturian Substage (CAS) — Stephanian Stage (CS) | ||
| Lithological Description: | Grey mudstone, sandstone, seatearth and coal. In the upper part of the member there are several thin Spirorbis limestone beds and the secondary reddening of the succession. | ||
| Definition of Lower Boundary: | In the type section, dark grey, carbonaceous mudstone with basal coal of the Burford Coal Member, overlies conformably grey to red mudstone-dominated succession of the Crawley Member. | ||
| Definition of Upper Boundary: | In the type section, reddish brown, blue mottled mudstone with calcareous nodules of the Windrush Member, overlies conformably grey mudstone of the Burford Coal Member. In the Steeple Aston Borehole, the upper boundary is an unconformity, overlain by fine-to-medium-grained sandstones of the Mercia Mudstone Group. | ||
| Thickness: | 138 m thick in the type section. | ||
| Geographical Limits: | Oxfordshire Coalfield; proved in the subsurface only. | ||
| Parent Unit: | Grovesend Formation (GDB) | ||
| Previous Name(s): | Burford Coal Group
(-79)
Burford Coal Formation [Obsolete Name and Code: Use BRFC] (-2636) Burford Coal Group (-79) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Apley Barn Borehole, SP31SW3, complete thickness of the member from 587.8 m to 449.6 m. Poole, 1969. | ||
| Reference Section | Steeple Aston Borehole, SP42NE12, base of the member at 322.44 m and unconformable top at 228.98 m. Poole, 1977. | ||
| Reference(s): | |||
| Poole, E G. 1969. The stratigraphy of the Geological Survey Apley Barn Borehole, Witney, Oxfordshire. Bulletin of the Geological Survey of Great Britain, Vol. 29, 1-66. | |||
| Poole, E G. 1977. Stratigraphy of the Steeple Aston Borehole, Oxfordshire. Bulletin of the Geological Survey of Great Britain, Vol. 57, 1-85. | |||
| Waters, C N, Waters, R A, Barclay, W J, and Davies, J R. 2009. Lithostratigraphical framework for Carboniferous successions of Southern Great Britain (Onshore). British Geological Survey Research Report, RR/09/01. 184pp. | |||
| Waters, C N, Barclay, W J, Davies, J R and Waters, R A. In press. Stratigraphical framework for Carboniferous successions of Southern Great Britain (Onshore). British Geological Survey Research Report, RR/05/06. | |||
| Worssam B C. 1963. The stratigraphy of the Geological Survey Upton Borehole, Oxfordshire. Bulletin of the Geological Survey of Great Britain, Vol. 20, 107-162. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E236 | |||