| 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. 430 m (Bewcastle). |
| Geographical Limits: |
Northumberland - Solway Basin. Bewcastle District (England Sheet 12). |
| Parent Unit: |
Lyne Formation (LYNE)
|
| Previous Name(s): |
Lynebank Beds [Obsolete Name and Code: Use LYN]
(-1677)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Lynebank Member (lower part), Ellery Sike to Nixontown on the River White Lyne (Day, 1970). |
| Partial Type Section |
Lynebank Member (upper part), River Black Lyne, SE of Holmehead Farm (Day, 1970). |
| Reference(s): |
| 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). |
| 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. 165 pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E012
|
