Computer Code: |
WFB |
Preferred Map Code: |
WFB |
Status Code: |
Full |
Age range: |
Permian Period (P)
— Permian Period (P) |
Lithological Description: |
Conglomerate composed of angular clasts of mudstone and well-foliated phyllite with quartz pebbles and very little matrix. |
Definition of Lower Boundary: |
Rests unconformably (in the type area) on Devonian rocks. |
Definition of Upper Boundary: |
Change from conglomerates to mudstone with minor siltstones and sandstones. |
Thickness: |
Up to about 50 m thick, 48 m in type section. |
Geographical Limits: |
Probably confined to south Dorset. |
Parent Unit: |
Not Entered (?)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
Wytch Farm oil well x14 (2625-2673m) |
Reference(s): |
Bristow, C R, Freshney, E C, and Penn, I E. 1991. Geology of the country around Bournemouth. Memoir for 1:50 000 geological sheet 329 (England and Wales). HMSO, London. |
Colter, V S and Howard, D S, 1981. The Wytch Farm Oilfield, Dorset. In: Petroleum geology of the continental shelf of north-west Europe. Illing, L V and Hobson, G D (eds.) London: The Institute of Petroleum. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E329
|