| Computer Code: |
SKAS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Paleocene Epoch (GP)
— Paleocene Epoch (GP) |
| Lithological Description: |
The Skadan Sandstone Member consists of fine to medium grained sandstone interbedded with medium to dark grey siltstone and mudstone. |
| Definition of Lower Boundary: |
Where mudstone is present at the base of the Sele Formation (e.g. 16/8-1), the base of the Skadan Sandstone Member is taken at a sharp downward change from sandstone to dark grey mudstone, associated with an increase in gamma-ray values and decrease in velocity. In a few sections the sandstone rests directly on Lista mudstone (e.g. 16/7a-14). |
| Definition of Upper Boundary: |
The top of the Skadan Sandstone Member is taken at a sharp downward change from dark grey laminated mudstone to sandstone, associated with a decrease in gamma-ray values. Low-gamma mudstones of Sele unit 1b commonly overlie the sandstone (e.g. 16/7a-14, 16/8-1). |
| Thickness: |
Less than 30 m thick. |
| Geographical Limits: |
The Skadan Sandstone is restricted to the southern Viking Graben. |
| Parent Unit: |
Sele Formation (SELE)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
North Sea well 16/07a- 14: 2145-2167 m (7038-7110 ft) below KB (Knox and Holloway, 1992). |
| Reference Section |
North Sea well 16/08- 1: 2143-2165.5 m (7030-7104 ft) (Knox and Holloway, 1992). |
| Reference(s): |
| Knox, R W O'B and Holloway, S. 1992. 1. Paleogene of the Central and Northern North Sea. In: Knox, R W O'B and Cordey, W G (eds.) Lithostratigraphic nomenclature of the UK North Sea. British Geological Survey, Nottingham. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
