| Computer Code: |
PLMN |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Cenomanian Age (KE)
— Cenomanian Age (KE) |
| Lithological Description: |
[Obsolete: use PLMA]
Thinly bedded dark-coloured calcareous mudstone (marl) overlain by rubbly limestone and calcareous silty beds followed by a higher calcareous mudstone/siltstone (marl). |
| Definition of Lower Boundary: |
Underlain by the Ferriby Chalk Formation at an uneven erosional boundary at the base of thinly bedded dark-coloured calcareous mudstones (marls). |
| Definition of Upper Boundary: |
The upper boundary is conformable at the base of the Black Band (the "Main" Black Band of Wood et al. 1997). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Melton Ross Quarry. Temporary sections visible during extraction operations or by excavation |
| Reference(s): |
| Wood, C J, Batten, D J, Mortimore, R N and Wray, D S. 1997. The stratigraphy and correlation of the Cenomanian-Turonian boundary interval succession in Lincolnshire, northern England. Freiberger Forschungsheft, Reihe C, Vol. 468, 333-346. |
| Wood, C J and Mortimore, R N. 1995. An anomalous Black Band succession (Cenomanian-Turonian boundary interval) at Melton Ross, Lincolnshire, eastern England and its international significance. Berliner Geowissenschaftliche Abhandlungen, Reihe E, Vol.16, 277-287. |
| Dodsworth, P. 1996. Stratigraphy, microfossils and depositional environments of the lowermost part of the Welton Chalk Formation (late Cenomanian to early Turonian, Cretaceous) in eastern England. Proceedings of the Yorkshire Geological Society, Vol.51, 45-64. |
| Sumbler, M G. 1999. The stratigraphy of the Chalk Group in Yorkshire and Lincolnshire. British Geological Survey Technical Report WA/99/02. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
