Computer Code: |
OBTV |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
Neoproterozoic Era (AZ)
— Comley Series (EC) |
Lithological Description: |
Formation not assigned to a group. Not exposed, but seen in the Bryn-teg Borehole. Underlies the Harlech Grits Group. |
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: |
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): |
Allen, P M, and Jackson, A A. 1978. Bryn-teg Borehole, North Wales. Bulletin of the Geological Survey of Great Britain, No. 61. |
Rushton, A W A and Howells, M F. 1998. Stratigraphical framework for the Ordovician of Snowdonia and the Lleyn Peninsula. British Geological Survey Research Report, RR/99/08. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |