Computer Code: |
PENS |
Preferred Map Code: |
notEntered |
Status Code: |
Full |
Age range: |
Pliensbachian Age (JE)
— Pliensbachian Age (JE) |
Lithological Description: |
[Obsolete: use DYS] Fine-grained sandy clay, clayey fine-grained sand and thin beds of fine-grained sand. |
Definition of Lower Boundary: |
Upward change from silty clays and silts (Ditcheat Clay) to fine-grained sandy clays and sands. |
Definition of Upper Boundary: |
Upward change to fossiliferous limestone of the Marlstone Rock Bed. |
Thickness: |
25-40m |
Geographical Limits: |
From Pennard Hill (limit of mapping in west) eastwards to Wyke Champflower - Milton Clevedon - Batcombe - north of Stoney Stratton. |
Parent Unit: |
none recorded or not applicable
|
Previous Name(s): |
Pennard Sands [Obsolete Name And Code: See PENS]
(PNS)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
Pennard Hill, Somerset. |
Reference(s): |
Kellaway, G A and Wilson, V. 1941. An outline of the geology of Yeovil, Sherborne and Sparkford Vale. Proceedings of the Geologists' Association, Vol.52, 131-174. |
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: |
none recorded or not applicable |