The BGS Lexicon of Named Rock Units — Result Details
Main Algal Member
| Computer Code: | MAN | Preferred Map Code: | MALG |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Arundian Substage (CJ) — Arundian Substage (CJ) | ||
| Lithological Description: | Rhythmic alternations of limestone and mudstone with 14 well developed nodular algal horizons. | ||
| Definition of Lower Boundary: | Main Algal One is conformable on Bewcastle Member (Lyne Formation) of Bewcastle. | ||
| Definition of Upper Boundary: | Top of Main Algal Fourteen is conformable with overlying Lower Antiquatonia Bed of the Cambeck Member (Lyne Formation) of Bewcastle. | ||
| Thickness: | 87 m (Bewcastle). | ||
| Geographical Limits: | Northumberland - Solway Basin. Bewcastle District (England Sheet 12). | ||
| Parent Unit: | Lyne Formation (LYNE) | ||
| Previous Name(s): | Main Algal Limestone Beds [Obsolete Name and Code: Use MAN]
(-2933)
Main Algal [Obsolete Name and Code: Use MAN] (-2932) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Main Algal Member, Birky Cleuch, a tributary of the Kirk Beck, Bewcastle (Day, 1970). | ||
| Reference(s): | |||
| Dean, M T, Browne, M A E, Waters, C N and Powell, J H. 2011. A lithostratigraphical framework for the Carboniferous successions of northern Great Britain (onshore). British Geological Survey Research Report, RR/10/007. 165pp. | |||
| Day, J B W and others, 1970. Geology of the neighbourhood around Bewcastle. Memoir of the British Geological Survey, Sheet 12. (England and Wales). | |||
| Leeder, M R. 1974. Lower Border Group (Tournaisian) fluvio-deltaic sedimentation and palaeogeography of the Northumberland Basin. Proceedings of the Yorkshire Geological Society, Vol.40, 129 - 180. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E012 | |||