| Computer Code: |
TUT |
Preferred Map Code: |
T |
| Status Code: |
Index Level |
| Age range: |
Norian Age (TN)
— Norian Age (TN) |
| Lithological Description: |
Gypsum-stone and mudstone. Norian age. |
| 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: |
East Midlands Shelf South. |
| Parent Unit: |
Branscombe Mudstone Formation (BCMU)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Howard, A S, Warrington, G, Ambrose, K, and Rees, J G. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. British Geological Survey Research Report, RR/08/04. |
| Sherlock, R L, and Hollingworth, S E. 1938. Gypsum and anhydrite, celestine and strontianite. Geological Survey of Great Britain, Special Reports on Mineral Resources, Vol. 3. |
| Taylor, S R. 1983. A stable isotope study of the Mercia Mudstones (Keuper Marl) and associated sulphate horizons in the English Midlands. Sedimentology, Vol. 30, 11-31. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E142
E141
|
