Computer Code: |
HRHC |
Preferred Map Code: |
HRh |
Status Code: |
Index Level |
Age range: |
Duckmantian Substage (CB)
— Duckmantian Substage (CB) |
Lithological Description: |
Coal. |
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: |
Pennine Middle Coal Measures Formation (PMCM)
|
Previous Name(s): |
Ravenhead Higher Delf [Obsolete Name and Code: Use HRHC]
(*166)
|
Alternative Name(s): |
Ravenhead Higher Delf [Obsolete: use HRHC]
|
Stratotypes: |
none recorded or not applicable |
Reference(s): |
none recorded or not applicable |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |