| Computer Code: |
TMSH |
Preferred Map Code: |
TmSh |
| Status Code: |
Index Level |
| Age range: |
Tournaisian Age (CT)
— Tournaisian Age (CT) |
| Lithological Description: |
[Obsolete: use TMMU] Olive-green shales and pale grey micaceous shales with Sanguinolites? ellipticus. Locally (eg in the aureole of the Dartmoor Granite) cannot be separated from the Hyner Shale. |
| Definition of Lower Boundary: |
Conformable passage from the dark olive or bluish green shales and mudstones of the Hyner Shale. |
| Definition of Upper Boundary: |
Taken at upward change to bluish black shales of the Combe Shale (probable conformable junction). |
| Thickness: |
Teign Valley 60m (Selwood and others, 1984). |
| Geographical Limits: |
Middle Teign Valley, Devon. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Trusham Formation [Obsolete Name and Code: Use TMMU, TMSH]
(-3728)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Track section north of Leigh, near Trusham (SX 855 822), Devon. 64m of green shales with ostracods. (Selwood and others, 1984, p 67). |
| Reference(s): |
| Chesher, J A, 1968. The succession and structure of the Middle Teign Valley. Proceedings of the Ussher Society, Vol.2, 15-17. |
| Selwood, E B, Edwards, R A, Simpson, S, Chesher, J A, Hamblin, R J O, Henson, M R, Riddolls, B W and Waters, R A. 1984. Geology of the countryside around Newton Abbot. Memoir of the British Geological Survey, Sheet 339 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E339
|
