| Computer Code: |
MRWB |
Preferred Map Code: |
notEntered |
| Status Code: |
Pending Upgrade |
| Age range: |
Pliensbachian Age (JE)
— Toarcian Age (JT) |
| Lithological Description: |
Ferruginous limestone. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Mendips and Bristol-Radstock Shelf. |
| Parent Unit: |
Beacon Limestone Formation (BNLS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Marlstone Rock Formation
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Cox, B M, Sumbler, M G, and Ivimey-Cook, H C. 1999. A Formational framework for the Lower Jurassic of England and Wales (Onshore Area). British Geological Survey Research Report RR/99/01. |
| Gaunt, G D, Fletcher, T P, and Wood, C J. 1992. Geology of the country around Kingston upon Hull and Brigg. Memoir of the British Geological Survey, sheets 80 and 89 (England and Wales). 172pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
