The BGS Lexicon of Named Rock Units — Result Details
Village Farm Formation
| Computer Code: | VIFM | Preferred Map Code: | Vlg |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Late Devonian Epoch (DU) — Tournaisian Age (CT) | ||
| Lithological Description: | Polymictic conglomerate, sandstone and breccia. | ||
| Definition of Lower Boundary: | The lower boundary is taken at a sharp, well-defined unconformity. The base of the unit is taken at the lowermost pebbly sandstone unit overlying a pebble-free sandstone sequence. Rests on Lower Palaeozoic strata of the Lower Comley Sandstone or "Dolgelly Beds". | ||
| Definition of Upper Boundary: | The upper boundary is assumed to be unconformable or transitional. It is taken at the uppermost sandstone below a sandstone and limestone-dominated sequence of the Jackie Parr Limestone Formation. | ||
| Thickness: | 40.35m maximum proved (incomplete thickness, top not present) from Lilleshall L8 Borehole (SJ71NW/34). | ||
| Geographical Limits: | Lilleshall Inlier, Lilleshall, North Shropshire. | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Basal Sandstone Unit [Obsolete Name and Code: Use VIFM]
(-3112)
Carboniferous Limestone [Obsolete Name and Code: Use CL] (-4550) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Lilleshall Borehole L8 (SJ71NW/34) from 0 - 40.35m below ground level Incomplete sequence - top not proved | ||
| Reference Section | Lilleshall Borehole L17 (SJ71NW/63) from 37.9m - 48.94m below ground level. Incomplete sequence - base not proved. | ||
| Reference(s): | |||
| Waters, C N, Smith, K, Hopson, P M, Wilson, D, Bridge, D M, Carney, J N, Cooper, A H, Crofts, R G, Ellison, R A, Mathers, S J, Moorlock, B S P, Scrivener, R C, McMillan, A A, Ambrose, K, Barclay, W J, and Barron, A J M. 2007. Stratigraphical Chart of the United Kingdom: Southern Britain. British Geological Survey, 1 poster. | |||
| Riley, N, 1998. Lilleshall Borehole L18 Lithology Log. British Geological Survey Technical Report WH/98/90R. | |||
| 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). | |||
| Riley, N, 1998. Correlation of selected Ove Arup Boreholes. (Lilleshall). British Geological Survey Technical Report WH/98/91R. | |||
| Prestwich, J, 1840. On the Geology of Coalbrookdale. Transactions of the Geological Society of London, Series 2, Vol.5, 413-495. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E153 | |||