| Computer Code: |
PEE |
Preferred Map Code: |
Pee |
| Status Code: |
Full |
| Age range: |
Toarcian Age (JT)
— Toarcian Age (JT) |
| Lithological Description: |
Dark grey/black mudstones of anoxic deposition dominate the succession, which is locally laminated, organic-rich and contains few benthic fossils. Poorly exposed. |
| Definition of Lower Boundary: |
Abrupt lithological change from sandstone of the Scalpay Sandstone Formation to anoxic mudstone. |
| Definition of Upper Boundary: |
Gradational transition to limestone of the Raasay Ironstone Formation. |
| Thickness: |
2 m+ |
| Geographical Limits: |
Sea of the Hebrides Basin. |
| Parent Unit: |
Lias Group (LI)
|
| Previous Name(s): |
Portree Shale [Obsolete Name and Code: Use PEE]
(-2970)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
South of Dun Liath ruins, near Elgol, Strathaird, Skye. Morton and Hudson, 1995. |
| Reference Section |
Coastline east of the Trotternish Ridge, Skye. Morton and Hudson, 1995. |
| Reference(s): |
| Cox, B M, Page, K N, and Morton, N. 2002. The Middle Jurassic stratigraphy of Scotland. In Cox, B M, and Sumbler, M G (editors), British Middle Jurassic Stratigraphy. Geological Conservation Review Series, Vol.26. (Peterborough: Joint Nature Conservation Committee/Chapman and Hall.) |
| Morton, N and Hudson, J D, 1995. Field Guide to the Jurassic of the Isles of Raasay and Skye, Inner Hebrides, north-west Scotland. In: Taylor, P D (editor), Field Geology of the British Jurassic. Geological Society of London, 209-280. |
| Morton, N. 1965. The Bearrenaig Sandstone Series (Middle Jurassic) of Skye and Raasay. Scottish Journal of Geology, Vol.1, 189-216. |
| Fyfe, J A, Long, D and Evans, D, 1993. United Kingdom offshore regional report: the geology of the Malin - Hebrides sea area (London: HMSO for the British Geological Survey). |
| Hesselbo, S P, Oates, M J and Jenkyns, H C. 19998. The Lower Lias Group of the Bebrides Basin. Scottish Journal of Geology, Vol.34, Part 1, 23-60. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S071
S080
S081
S051
S052
|
