Computer Code: |
WHD |
Preferred Map Code: |
notEntered |
Status Code: |
Full, pending ratification |
Age range: |
Wenlock Epoch (SW)
— Wenlock Epoch (SW) |
Lithological Description: |
Sandstones, mudstones, with fish beds. (Correlative of Waterhead Group - Glenbuck Group). |
Definition of Lower Boundary: |
Drawn at base of sandstones of the Passage Formation where they rest conformably on sandstones of the Dunside Formation of the Priesthill Group. |
Definition of Upper Boundary: |
Drawn at conformable upward passage from sandstones of the Logan Formation to conglomerate of the Middlefield Conglomerate of the Dungavel Group. |
Thickness: |
720m approx. |
Geographical Limits: |
Strathclyde, Scotland. |
Parent Unit: |
Not Applicable (-)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
Waterhead, Strathclyde, Scotland. |
Reference(s): |
Geikie, A, 1873. Lanarkshire: Central Districts. Memoirs of the Geological Survey of Scotland. |
Walton, E K. 1983. Lower Palaeozoic - Stratigraphy. In Craig, G Y (editor), Geology of Scotland (2nd edition)(Edinburgh: Scottish Academic Press.) |
Cameron, I B and Stephenson, D, 1985. British Regional Geology: The Midland Valley of Scotland (3rd Edition). (London: HMSO for British Geological Survey). |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S023
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