| Computer Code: |
BVG |
Preferred Map Code: |
BVG |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Medium to high-k, continental margin calc-alkaline basalt-andesite-rhyolite volcanic association of lavas, sills, pyroclastic and reworked pyroclastic deposits. NOTE: See definitions of component formations and members. |
| Definition of Lower Boundary: |
Unconformably overlies the Skiddaw Group; the base is taken at this unconformity where there is a profound change from a marine mudrock sequence to a volcanic one. |
| Definition of Upper Boundary: |
Unconformably overlain by Windermere Supergroup. |
| Thickness: |
Variable, but probably up to 6000m. |
| Geographical Limits: |
Central Lake District, also in Cross Fell Inlier and possibly Teesdale Inlier. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Borrowdale Volcanic Series [Obsolete Name and Code: Use BVG]
(-3883)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Central Lake District, but see stratotypes for component formations and members. |
| Reference(s): |
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) |
| Millward, D, Johnson, E W, Beddoe-Stephens, B, Young, B, Kneller, B C, Lee, M K, Fortey, N J, Allen, P M, Branney, M J, Cooper, D C, Hirons, S, Kokelaar, B P, Marks, R J, McConnell, B J, Merritt, J W, Molyneux, S G, Petterson, M G, Roberts, B, Rundle, C C, Rushton, A W A, Scott, R W, Soper, N J, and Stone, P. 2000. Geology of the Ambleside district. Memoir of the British Geological Survey, England and Wales, Sheet 38. |
| Millward, D. 2003. A stratigraphical framework for the Lower Palaeozoic igneous rocks of the Lake District and adjacent areas. British Geological Survey Research Report, RR/03/?? |
| Moseley F. 1984. Lower Palaeozoic lithostratigraphical classification in the English Lake District. Geological Journal, Vol. 19, p. 239-247. |
| Burgess, I C, and Holliday, D W. 1979. Geology of the country around Brough-under-Stainmore. Memoir for 1:50 000 geological sheet 31 and parts of sheets 25 and 30. Geological Survey of Great Britain (England and Wales). (London: HMSO.) 131 pp. |
| Akhurst, M C, Chadwick, R A, Holliday, D W, McCormac, M, McMillan, A A, Millward, D, Young, B, Ambrose, K, Auton, C A, Barclay, W J, Barnes, R P, Beddoe-Stephens, B, James, J C W, Johnson, H, Jones, N S, Glover, B W, Hawkins, M P, Kimbell, G S, MacPherson, K A T, Merritt, J W, Milodowski, A E, Riley, N J, Robins, N S, Stone, P, and Wingfield, R T R. 1997. The geology of the west Cumbria district. Memoir of the British Geological Survey, Sheets 28, 37 and 47 (England and Wales). 138pp. |
| Johnson, E W, Soper, N J, Burgess, I C, Ball, D F, Beddoe-Stephens, B, Carruthers, R M, Fortey, N J, Hirons, S, Merritt, J W, Millward, D, Roberts, B, Walker, A B and Young, B. 2001. Geology of the country around Ulverston. Memoir of the British Geological Survey, England and Wales, Sheet 48. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E038
E047
E037
E029
E024
E048
E025
E031
E039
E028
E030
|
