| Computer Code: |
KNSF |
Preferred Map Code: |
KnS |
| Status Code: |
Full |
| Age range: |
Early Triassic Epoch (TE)
— Early Triassic Epoch (TE) |
| Lithological Description: |
Sandstone, red-brown to yellow, generally pebble-free, fine- to medium-grained, cross-stratified. Dominantly aeolian. |
| Definition of Lower Boundary: |
Where fluviatile/marine mudstones and siltstones of the Manchester Marl Formation or laterally persistent fluviatile argillaceous sandstones of the Bold Formation (south Cheshire Basin) pass into cross-stratified aeolian sandstones of the Kinnerton Formation. |
| Definition of Upper Boundary: |
Where aeolian sandstones of the Kinnerton Formation pass into fluviatile, commonly pebbly, sandstones of the Chester Pebble Beds Formation. |
| Thickness: |
0 - >150m. |
| Geographical Limits: |
Cheshire Basin. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Lower Mottled Sandstone [Obsolete Name and Code: Use BRI, KNSF, LNS]
(-4496)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Cliff section, behind Heighley Castle Farm. 2km north of Madeley, Staffordshire. 0 - (?)9.5m. |
| Type Area |
Area around Kinnerton Green, Clwyd. |
| Reference Section |
Hodnet Pumping Station (borehole SJ62NW/3) observation well. Between depths 312ft to 135ft 8inch. (Wild, 1987). |
| Reference(s): |
| Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. |
| Wild, E K, 1987. The sedimentology and reservoir quality of the Kinnerton Sandstone Formation, UK, and the Tirrawacca Sandstone, South Australia. Unpublished Ph.D Thesis, University of Bristol. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E123
E109
E137
E151
E107
E096
|
