The BGS Lexicon of Named Rock Units — Result Details
Cheviot Volcanic Formation
| Computer Code: | CHEV | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Early Devonian Epoch (DL) — Early Devonian Epoch (DL) | ||
| Lithological Description: | A thick pile of andesitic lava with associated pyroclastic and reworked volcanic rocks, subordinate biotite-phyric rhyolite and tuff. | ||
| Definition of Lower Boundary: | The base of the volcanic rocks resting unconformably on Wenlock strata or, locally the White Hill Sandstone Formation. | ||
| Definition of Upper Boundary: | The top of the volcanic pile, uncomnformably overlain by the upper Devonian to lower Carboniferous rocks. | ||
| Thickness: | At least 1000 m thick. | ||
| Geographical Limits: | The Cheviot Hills in Northumberland and the Scottish borders. | ||
| Parent Unit: | Reston Group (REST) | ||
| Previous Name(s): | Cheviot Volcanic Series [Obsolete Name and Code: Use CHEV]
(-125)
Cheviot Lavas [Obsolete Name And Code: Use CHEV] (CHV) Cheviot Volcanic Group [Obsolete Name and Code: Use CHEV] (-2692) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | The valley of the River Alwin, Cheviot Hills, Northumberland. Carruthers et., 1932. | ||
| 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.) | |||
| Mykura, W. 1991. Old Red Sandstone. 297-346 in Geology of Scotland (3rd edition, revised). Craig, G Y (editor). Geological Society of London. | |||
| Browne, M A E, Smith, R A, and Aitken, A M. 2002. Stratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. British Geological Survey Research Report RR/01/04. 67 pp. | |||
| Carruthers, R G, Burnett, G A and Anderson, W. 1932. The geology of the Cheviot Hills. Memoir of the Geological Survey of Great Britain, Sheets 3 and 5 (England and Wales). | |||
| House, M R, Richardson, J B, Chaloner, W G, Allen, J R L, Holland, C H and Westoll, T S. 1977. A Correlation of Devonian rocks of the British Isles. Geological Society of London, Special Report No.8, Scottish Academic Press, Edinburgh. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E003 S025 S017 S018 S026 E005 E006 E008 | |||