The BGS Lexicon of Named Rock Units — Result Details

Lynebank Member

Computer Code: LYN Preferred Map Code: LYBA
Status Code: Full
Age range: Chadian Substage (CI) — Chadian Substage (CI)
Lithological Description: Alternations of thin limestones, dolomitic limestones (cementstones) and mudstones with sandstone beds towards top of sequence.
Definition of Lower Boundary: Base not seen.
Definition of Upper Boundary: Conformable upper boundary at base of the Bogside Limestone (Bewcastle Member).
Thickness: c.430m (Bewcastle)
Geographical Limits: Northumberland - Solway Basin. Bewcastle District (England Sheet 12).
Parent Unit: Lyne Formation (LYNE)
Previous Name(s): Lynebank Beds (-1677)
Alternative Name(s): none recorded or not applicable
Partial Type Section  Lynebank Member (upper part), River Black Lyne, SE of Holmehead Farm. Day, 1970. 
Partial Type Section  Lynebank Member (lower part), Ellery Sike to Nixontown on the River White Lyne. Day, 1970. 
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. 
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: