| Computer Code: |
PLLS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Arundian Substage (CJ)
— Arundian Substage (CJ) |
| Lithological Description: |
The base of the Formation comprises a 6m-thick bed of grey, pebbly sandstone. This is overlain by dolomitic limestones with two thinner sandstones in a 15m thickness of strata. White to buff, crystalline limestones, ooidal in part, occur above the youngest sandstone. |
| Definition of Lower Boundary: |
The unconformable base is taken where dolomitic, locally ooidal limestone of the Belvoir Limestone Formation is overlain by grey , pebbly sandstone of the Plunger Limestone Formation. |
| Definition of Upper Boundary: |
The top is taken where the white to buff, crystalline limestone of the Plunger Limestone Formation is overlain by grey mudstone, siltstone or sandstone of the Millstone Grit Group. |
| Thickness: |
199m at the type locality. |
| Geographical Limits: |
Only proved in the subsurface at the type locality. May be present elsewhere in the subsurface on the Nottingham Shelf of the East Midlands Platform |
| Parent Unit: |
Peak Limestone Group (PKLM)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Plungar 8A Borhole [SK73SE/27] 700m southeast of Poplar Farm, Plungar, Vale of Belvoir [SK7745 3336]: the full thickness of the Formation is proved between 1131 and 932m. |
| Reference(s): |
| Carney, J N, Ambrose, K, Brandon, A, Royles, C P, Lewis, M A, and Sheppard, H. 2004. Geology of the country around Melton Mowbray. Sheet Description of the British Geological Survey, 1:50 000 Series Sheet 142 Melton Mowbray (England and Wales). |
| Riley, N J. 1992. Faunal Biostratigraphy of Plungar 8A Bh. Interval 3280-4615 feet. British Geological Survey Technical Report, WH92/199C. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E142
|
