Computer Code: |
CGO |
Preferred Map Code: |
notEntered |
Status Code: |
Index Level |
Age range: |
Cambrian Period (E)
— Cambrian Period (E) |
Lithological Description: |
[Obsolete: use OCO] Interbedded pebbly, micaceous greywacke sandstones and cleaved green silty and sandy mudstones. |
Definition of Lower Boundary: |
Rests unconformably on chlorite schists of the Precambrian Mona Complex. |
Definition of Upper Boundary: |
Overlain unconformably by cleaved dark grey Ordovician mudstones. |
Thickness: |
Not defined. |
Geographical Limits: |
Not defined. |
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 Area |
Llandudno, Sheet 94. |
Reference(s): |
Greenly, E. 1919. Geology of Anglesey. Memoir of the Geological Survey, UK. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E094
|