The BGS Lexicon of Named Rock Units — Result Details
West Lothian Oil-Shale Formation
| Computer Code: | WLO | Preferred Map Code: | WLO |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Asbian Substage (CR) — Brigantian Substage (CX) | ||
| Lithological Description: | Pale sandstones, interbedded with grey siltstones and mudstones, seams of oil-shale and of coal with beds of seatrock, ostracod-rich limestone/dolomite and sideritic ironstone. | ||
| Definition of Lower Boundary: | Base of the Humbie Marine Band (= lowest of the Macgregor Marine Bands). | ||
| Definition of Upper Boundary: | Base of the Hurlet Limestone. | ||
| Thickness: | 1120m | ||
| Geographical Limits: | Lothians, Fife, eastern Strathclyde. | ||
| Parent Unit: | Strathclyde Group (SYG) | ||
| Previous Name(s): | Queensferry Beds [Obsolete Name And Code: Part Of WLO]
(QB)
Upper Oil-Shale Group and part of Lower Oil-Shale Group [Obsolete Name and Code: Use WLO] (-3136) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Composite section based on numerous boreholes in the West Lothian Oil-Shale field. | ||
| Reference Section | Coastal section from South Queensferry to Blackness. | ||
| Reference Section | Stream section, Water of Leith, near Redhall. (Chisholm and Brand, 1994, p.100: Redhall Marine Band). | ||
| Reference(s): | |||
| Chisholm, J I, MacAdam, A D, Brand, P J. 1989. Lithostratigraphical classification of Upper Devonian and Lower Carboniferous rocks in the Lothians. British Geological Survey Technical Report, WA/89/26. | |||
| Chisholm, J I and Brand, P J. 1994. Revision of the late Dinantian sequence in Edinburgh and West Lothian. Scottish Journal of Geology, Vol.30, 97-104. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S031 S024 S032 | |||