| Computer Code: |
TCN |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Callovian Age (JC)
— Callovian Age (JC) |
| Lithological Description: |
Silty mudstone. |
| Definition of Lower Boundary: |
A sharply-defined and significant upward facies change from the medium- to coarse-grained sandstone of the Carn Mor Sandstone Member (CMSA) of the Staffin Bay Formation (STBA) to the silty mudstone of the Tobar Ceann Siltstone Member (Sykes, 1975, fig. 6). |
| Definition of Upper Boundary: |
Overlain by the Scaladal Sandstone Member (SCSA). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Strathaird district, Skye, north-west Scotland. |
| Parent Unit: |
Staffin Shale Formation (SFSH)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Tobar Ceann [NG 506 195], Druim an Fhuarain, Strathaird, southern Skye (Sykes, 1975). |
| Reference(s): |
| Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. |
| Riding, J B. 1984. The palynology of the Tobar Ceann Siltstone Member, Staffin Shale Formation (Jurassic: Callovian/Oxfordian), Strathaird, southern Skye. British Geological Survey Short Communications, 16/10, 1-5. |
| Sykes, R M. 1975. The stratigraphy of the Callovian and Oxfordian stages (Middle-Upper Jurassic) in northern Scotland. Scottish Journal of Geology, Vol.11, 51-78. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
