| 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 (editors). (London: The Institute of Petroleum.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E329
|
