The BGS Lexicon of Named Rock Units — Result Details
Southacre Clay And Lignite Member
| Computer Code: | SO | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Oligocene Epoch (GO) — Oligocene Epoch (GO) | ||
| Lithological Description: | Lignites and brown and black carbonaceous clays, with subordinate grey to greyish brown silty clays and rare sands. | ||
| Definition of Lower Boundary: | Conformable upon the Abbrook Clay and Sand Member, from which lignites and brown carbonaceous clays are absent. | ||
| Definition of Upper Boundary: | Passes upwards into the undifferentiated upper parts of the Bovey Formation, marked by the absence of lignite beds and a considerable increase in fine sand and stiff, silty clay beds. | ||
| Thickness: | 30 to 67m | ||
| Geographical Limits: | Bovey Basin, Devon. | ||
| Parent Unit: | Bovey Formation (BOF) | ||
| Previous Name(s): | Southacre Clay and Lignite [Obsolete Name and Code: Use SO]
(-4892)
Southacre Clay-and-Lignite Member [Obsolete Name and Code: Use SO] (-4893) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Exposed in unnamed working clay pits between New Bridge Claypit and Pinsent Claypit, where the sequence is exposed from time to time. Access is limited, and strictly by appointment with the operators. Sections rapidly degrade due to the oxidation of lignite.Selwood et al., 1984. | ||
| Type Area | The Southacre area of the Bovey Basin, Devon. Selwood et al., 1984. | ||
| Reference(s): | |||
| 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). | |||
| Edwards, R A. 1970. The geology of the Bovey Basin. Unpublished PhD thesis, University of Exeter. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E339 | |||