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Geosource>BobMcIntosh at 10:35, 27 June 2015

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== Burcot Member [http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=BRCT (BRCT)]==
'''Burcot Member '''(Old et al. 1991)

=== Previous nomenclature ===
Basement Beds (Hull, 1869)

=== Parent unit ===
[[Helsby Sandstone Formation]]

=== Derivation of name ===
From the Burcot area (SO 98 71), Worcestershire

=== Type section ===
Road cutting, Burcot (SO 972 716) (Benton et al. 2002)

=== Reference section ===
SO 9619 6816: Sugarbrook No. 3 Borehole BGS Registered No. SO96NE/30, 206.8 to 398.4 m (Old et al., 1991); the base of the member was not proved.

=== Extant exposures/sections ===
Scattered exposures south of Kidderminster, Worcestershire.

=== Lithology ===
The dominant lithology is planar and trough cross-bedded, irregularly bedded and structureless red-brown sandstones. Subordinate lithologies are conglomerates composed of subrounded to angular clasts. Extraformational clasts include quartz, quartzite, limestone, chert and tuff; intraformational clasts include mudstone, siltstone and sandstone. There are subordinate beds of grey-green mudstone and siltstone. The sequence shows repeated fining-upward cycles, from conglomerate to mudstone; the siltstone and mudstone components of these are commonly absent. Sedimentary structures include ripple marks, flute casts, slump structures and convolute bedding. Micaceous bedding planes are common. A solitary fish spine was recorded from the member (Wills, 1970).

=== Lower boundary ===
The lower boundary is taken at the lowest conglomerate resting on soft red sandstones of the Wildmoor Sandstone Member of the Wilmslow Sandstone Formation.

=== Upper boundary ===
The upper boundary is taken at the top of the highest bed of extraformational conglomerate, above which are sandstones and mudstones of the overlying Finstall Member.

=== Thickness ===
The thickest known sequence is 192.4 m, in the Sugarbrook No. 3 Borehole, but the base has not been proved.

=== Age ===
Anisian (early Mid Triassic)

=== Equivalent units ===
None

=== Geographical extent ===
The member has only been mapped in the Bromsgrove area of Worcestershire but is likely to extend westwards to Little Witley [SO 78 63], Worcestershire.

=== Subdivisions ===
None

== References ==
<references/>
[[Category:Triassic lithostratigraphical nomenclature]]

Burcot Member - Revision history

Dbk: 1 revision imported

Geosource>BobMcIntosh at 10:35, 27 June 2015