The BGS Lexicon of Named Rock Units — Result Details

Plenus Marl [Obsolete: use PLMA]

Computer Code: PLNM Preferred Map Code: notEntered
Status Code: Index Level
Age range: Cenomanian Age (KE) — Cenomanian Age (KE)
Lithological Description: [Obsolete: use PLMA]
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: 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:
none recorded or not applicable
Reference(s):
Jefferies, R P S. 1963. The stratigraphy of the Actinocamax plenus Subzone (Turonian) in the Anglo-Paris Basin. Proceedings of the Geologists' Association, Vol.74, 1-33. 
Witham, F. 1991. The stratigraphy of the Upper Cretaceous Ferriby, Welton and Burnham formations north of the Humber, north-east England. Proceedings of the Yorkshire Geological Society, Vol. 48, 227-254. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable