The BGS Lexicon of Named Rock Units — Result Details
Jackie Parr Limestone Formation
| Computer Code: | JPLS | Preferred Map Code: | JKP |
|---|---|---|---|
| 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) |
||
| 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): | |||
| 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). | |||
| 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. | |||
| 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. | |||
| Bridge, D M, and Hough E. 2002. Geology of the Wolverhampton and Telford district. Sheet Description of the BGS Sheet 153 (England and Wales). | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||