The BGS Lexicon of Named Rock Units — Result Details
Upper Border Group [Obsolete: use TYLS]
| Computer Code: | UBO | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Index Level | ||
| Age range: | Holkerian Substage (CQ) — Asbian Substage (CR) | ||
| Lithological Description: | [Obsolete: use TYLS] Interbedded mudstones, siltstones and sandstones, with marine limestones and a few coals; local volcanic rocks. | ||
| Definition of Lower Boundary: | At base of Glencartholm Volcanic Beds (Langholm) or base of Clattering Band (Bewcastle). | ||
| Definition of Upper Boundary: | Conformable upward passage to Lower Liddesdale Group: at base of Dinwoodie Beds. | ||
| Thickness: | 670m | ||
| Geographical Limits: | Langholm and Bewcastle areas of Northumberland Trough. | ||
| Parent Unit: | none recorded or not applicable | ||
| Previous Name(s): | Border Group, Upper [Obsolete Name and Code: Use UBO]
(-3741)
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| Alternative Name(s): | Border Group Scremerston Coal Group [Obsolete: use SCG] |
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| Stratotypes: | |||
| Reference Section | Archerbeck Borehole. 2528' to bottom of bore. (Lumsden and Wilson, 1961). | ||
| Type Area | Langholm area. (Lumsden and others, 1967). | ||
| Reference(s): | |||
| Lumsden G I and Wilson R B. 1961. The stratigraphy of the Archerbeck Borehole, Canonbie Dumfriesshire. Bulletin of the Geological Survey of Great Britain, No.18, 1-89. | |||
| George, T N, Johnson, G A L, Mitchell, M, Prentice, J E, Ramsbottam, W H C, Sevastopulo, G D and Wilson, R B. 1976. A correlation of the Dinantian rocks of the British Isles. Special Report of the Geological Society of London, No 7. | |||
| Lumsden G I, Tulloch W, Howells M F and Davies A. 1967. The geology of the neighbourhood of Langholm. Memoir of the Geological Survey, Sheet 11 (Scotland). | |||
| Day, J B W and others, 1970. Geology of the neighbourhood around Bewcastle. Memoir of the British Geological Survey, Sheet 12. (England and Wales). | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||