The BGS Lexicon of Named Rock Units — Result Details

Lyne Formation

Computer Code: LYNE Preferred Map Code: LYNE
Status Code: Full
Age range: Chadian Substage (CI) — Holkerian Substage (CQ)
Lithological Description: Cyclical sequences of sandstone, siltstone, mudstone and thin limestones, with localised dolomitic cementstones and distinctive algal beds.
Definition of Lower Boundary: Comformable on the Ballagan Formation (Kirkbean, Annandale). At Bewcastle the base is not seen; elsewhere it may be unconformable on Devonian or older strata.
Definition of Upper Boundary: A diachronous upper boundary with the Fell Sandstone Formation, locally defined as the base of the Whitberry Marine Bed at Bewcastle.
Thickness: At least 900m thick, measured in the Bewcastle area.
Geographical Limits: The Solway Basin, Northumberland. Mapped from Kirkbean Sheet S5E/6, to Roxburghshire Sheet S11/17, and Bewcastle Sheet E12.
Parent Unit: Border Group (BDR)
Previous Name(s): Lower Border Group [Obsolete Name And Code: Use BGN or LYNE] (LBO)
Border Group, Lower [Obsolete Name And Code: Use BGN Or LYNE] (LBG)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Cambeck Member (Lower Antiquatonia Band to base of Whitberry Band), River White Lyne, Bewcastle. [Day, 1970]. 
Type Section  Main Algal Member, Birky Cleuch, a tributary of the Kirk Beck, Bewcastle. [Day, 1970]. 
Type Section  Lynebank Member (upper part), River Black Lyne, SE of Holmhead Farm. [Day, 1970]. 
Type Section  Lynebank Member (lower part), Ellery Sike to Nixontown on the River White Lyne. [Day, 1970]. 
Type Section  Bewcastle Member (Bogside Limestone to base of Main Algal Member), Ashy Cleuch upstream from Stockastead Quarry. [Day, 1970]. 
Type Section  Cambeck Member (Barrow's Pike Sandstone to base of Whitberry Band), Whitberry Burn, Bewcastle. [Day, 1970]. 
Type Section  Southerness Limestone Formation, now Southerness Member (see existing Lexicon entry), shore section south of Southerness, Kirkcudbrightshire. [Craig, 1956;McMillan, A A. 2000. Upper Palaeozoic in Lintern, B C and Floyd, J D. 2000]. 
Reference(s):
Day, J B W and others, 1970. Geology of the neighbourhood around Bewcastle. Memoir of the British Geological Survey, Sheet 12. (England and Wales). 
Craig, G Y. 1956. The Lower Carboniferous outlier of Kirkbean, Kirkcudbrightshire. Transactions of the Geological Society of Glasgow, Vol. 22, 113 - 132. 
Deegan, C E. 1973. Tectonic control of sedimentation at the margin of a Carboniferous depositional basin in Kirkcudbrightshire. Scottish Journal of Geology, Vol. 9, p. 1 - 28. 
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. 
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. 
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). 
McMillan, A A. 2000. Upper Palaeozoic in Lintern, B C and Floyd, J D. 2000. Geology of the Kirkcudbright-Dalbeattie District. Memoir of the British Geological Survey, Sheets 5W, 5E and part of 6W (Scotland). 
Nairn, A E M. 1958. Petrology of the Whita Sandstone, southern Scotland. Journal of Sedimentary Petrology. Vol. 28, p. 57 - 64. 
Smith, R and McMillan, A A. 1996. Mineral investigations in the Northumberland Trough: part 3, Ecclefechan - Waterbeck area. BGS Mineral Recconnaisance Programme Open File Report No. 21. 
Nairn, A E M. 1956. The lower Carboniferous rocks between the rivers Esk and Annan Dumfriesshire. Transactions of the Geological Society of Glasgow, 22, p.80-93. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S010 S011 S017 E012 S006 S005 S010