Computer Code: |
SPLI |
Preferred Map Code: |
notEntered |
Status Code: |
Full |
Age range: |
Pliensbachian Age (JE)
— Pliensbachian Age (JE) |
Lithological Description: |
Interbedded muddy limestones and thin silty mudstones. |
Definition of Lower Boundary: |
Upward change from thick mudstone sequence to a dominantly limestone sequence. |
Definition of Upper Boundary: |
Upward change from a dominantly limestone sequence to silty and fine-grained sandy clays. |
Thickness: |
0-2.5m |
Geographical Limits: |
From just southwest of Ditcheat [ST 620 361] in an arc northeastward through Spargrove to just north of Stoney Stratton (limit of current mapping on 1:50 000 sheets 296 and 297). |
Parent Unit: |
Charmouth Mudstone Formation (CHAM)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
Small exposures around the hamlet of Spargrove, Somerset, 2km ESE of Evercreech. |
Reference(s): |
Bristow, C R, and Westhead R K. 1993. Geology of the Evercreech-Batcombe area (Somerset). British Geological Survey Technical Report WA/93/89. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E296
E297
|