Computer Code: |
ANTMB |
Preferred Map Code: |
notEntered |
Status Code: |
Index Level |
Age range: |
Marsdenian Substage (CZ)
— Marsdenian Substage (CZ) |
Lithological Description: |
A Marsdenian marine band. |
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: |
Confirmed as present in several areas along the Namurian outcrop of southern Wales, between Druidston in the west and the Twrch Valley in the east (see Ramsbottom et al., 1978, fig. 4). |
Parent Unit: |
Bishopston Mudstone Formation (BISHM)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
none recorded or not applicable |
Reference(s): |
Ramsbottom, W H C, Calver, M A, Eagar, R M C, Hodson, F, Holliday, D W, Stubblefield, C J and Wilson, R B. 1978. A correlation of the Silesian rocks in the British Isles. Geological Society of London, Special Report No.10. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |