Computer Code: |
GWNM |
Preferred Map Code: |
GwM |
Status Code: |
Index Level |
Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
Lithological Description: |
[Obsolete: use NGW] |
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): |
Gibbons W and McCarroll D. 1993. Geology of the country around Aberdaron, including Bardsey Island. Memoir of the British Geological Survey, Sheet 133 (England and Wales). (London: H.M.S.O.). 88pp. |
Gibbons, W and Harris, A L. 1994. A revised correlation of Precambrian rocks in the British Isles. Geological Society of London Special Report, No.22. |
Horak, J M and Gibbons, W. 2000. Anglesey and the Lleyn Peninsula (Llyn). 145-179 in Carney, J (editor), Precambrian rocks of England and Wales. Geological Consrvation Review Series, 20. [Peterborough: Joint Nature Conservation Committee.] |
Shackleton, R M. 1975. Precambrian rocks of Wales. 76-83 in A correlation of Precambrian rocks in the British Isles. Harris, A L, and others (editors). Geological Society of London Special Report No. 6. |
Gibbons, W and Ball, M J. 1991. Discussion on Monian Supergroup srtatigraphy in north-west Wales. Journal of the Geological Society, London, Vol. 148, 5-8. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E133
E094
E134
|