Computer Code: |
CUF |
Preferred Map Code: |
CUF |
Status Code: |
Pending Upgrade |
Age range: |
Abereiddian Stage (O2)
— Caradoc Series (O4) |
Lithological Description: |
Heterogeneous association of red silicious mudstone locally with cherty bands, containing in places, slumped blocks of pillow lava. Also lava breccia, greenish grey mudstone, grey-green cherts. |
Definition of Lower Boundary: |
Lowest occurrence of slumped heterogenous association of the same or all the above lithologies. |
Definition of Upper Boundary: |
The upper limit is the apparent occurrence of the same. |
Thickness: |
100m+ |
Geographical Limits: |
Not defined. |
Parent Unit: |
Tappins Group (TAP)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
Sheet S007. |
Reference(s): |
Floyd, J D, 1996. Lithostratigraphy of the Ordovician rocks in the Southern Uplands: Crawford Group, Moffat Shale Group, Leadhills Supergroup. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.86, 153-165. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S007
|