| Computer Code: |
BENL |
Preferred Map Code: |
BLS |
| Status Code: |
Full |
| Age range: |
Aalenian Age (JA)
— Aalenian Age (JA) |
| Lithological Description: |
Soft silty sandstones, harder calcareous sandstones becoming coarser upwards over the first 10m or so. The topmost part of the unit is thickly-bedded to massive sandstone with silty partings. Poorly fossiliferous, with rare bivalves, belemnites and ammonites. |
| Definition of Lower Boundary: |
First limestone bed above Dun Caan Shale Member. |
| Definition of Upper Boundary: |
Overlain by cross-bedded sandstone of the Rasasay Sandstone Member. |
| Thickness: |
21m |
| Geographical Limits: |
Sea of the Hebrides Basin. |
| Parent Unit: |
Bearreraig Sandstone Formation (BEAS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Beinn Na Leac, near Halaig village, Raasay. Cox and Sumbler, 2002. |
| Reference(s): |
| Cox, B M, Page, K N, and Morton, N. 2002. The Middle Jurassic stratigraphy of Scotland. In British Middle Jurassic Stratigraphy. Cox, B M, and Sumbler, M G (editors). Geological Conservation Review Series, Vol. 26. (Peterborough: Joint Nature Conservation Committee/Chapman and Hall.) |
| Morton, N. 1965. The Bearrenaig Sandstone Series (Middle Jurassic) of Skye and Raasay. Scottish Journal of Geology, Vol.1, 189-216. |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S081
|
