The BGS Lexicon of Named Rock Units — Result Details
Jackie Parr Limestone Formation
Computer Code: | JPLS | Preferred Map Code: | JKP |
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Status Code: | Full | ||
Age range: | Late Devonian Epoch (DU) — Tournaisian Age (CT) | ||
Lithological Description: | Interbedded limestone and sandstone sequence with subordinate dolomite, pebbly sandstone and claystone. Heavily pedogenic. Sandstone variable composition; limestone typically packstone or grainstone. | ||
Definition of Lower Boundary: | Proved in boreholes only. Thought to be possibly unconformable or transitional. The boundary is taken at the top of the lowermost limestone above a sandstone-dominated sequence of the Village Farm Formation. | ||
Definition of Upper Boundary: | Proved in boreholes only. Thought to be possibly unconformable. The boundary is taken at the top of the uppermost limestone below a sandstone-dominated sequence of the Lydbrook Sandstone Formation. | ||
Thickness: | 30.5m maximum proved (from Lilleshall L6 borehole). | ||
Geographical Limits: | Lilleshall (North Shropshire) [SJ73 15]. | ||
Parent Unit: | Avon Group (AVO) | ||
Previous Name(s): | Carboniferous Limestone [Obsolete Name and Code: Use CL]
(-4550)
Red and Grey Limestones [Obsolete Name and Code: Use JPLS] (-2869) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Lilleshall Borehole L6 (SJ71NW/33), 8.5 - 39.0m depth (datum = ground level). | ||
Reference(s): | |||
Riley, N, 1998. Lilleshall Borehole L18 Lithology Log. British Geological Survey Technical Report WH/98/90R. | |||
Prestwich, J, 1840. On the Geology of Coalbrookdale. Transactions of the Geological Society of London, Series 2, Vol.5, 413-495. | |||
Murchison, R I, 1839. 'Silurian System'. [London: John Murray.] | |||
Whitehead, T H, Robertson, T, Pocock, R W and Dixon, E E L. 1928. Geology of the country between Wolverhampton and Oakengates. Memoir of the Geological Survey of Great Britain, Sheet 153 (England and Wales). | |||
Bridge, D M and Hough E, 2002. Geology of the Wolverhampton and Telford district. Sheet Description of the BGS Sheet 153 (England and Wales). | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
none recorded or not applicable |