| Computer Code: |
CBT |
Preferred Map Code: |
CBT |
| Status Code: |
Full |
| Age range: |
Lochkovian Age (DO)
— Pragian Age (DP) |
| Lithological Description: |
Conglomerate, with rounded quartzite cobbles, reddened on the outside, set in a silty, or in places calcareous, matrix. |
| Definition of Lower Boundary: |
Unconformity on Dalradian metasediments and Caledonian plutonic rocks. |
| Definition of Upper Boundary: |
Transition from conglomerate to shale. |
| Thickness: |
Approx. 10 metres in type section, probably increasing southwards to 15 - 20 metres on Glaschul Hill (NJ 458 149). |
| Geographical Limits: |
Rhynie Outlier, Grampian Highlands, Scotland. |
| Parent Unit: |
Rhynie Group (RHN)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Corbie's Tongue, Sheet 76W, Scotland. |
| Reference(s): |
| Wilson, J S G. 1890. Explanation of Sheet 76 Central Aberdeenshire. Memoir of the Geological Survey (Scotland). |
| Stephenson, D and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey.) |
| 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.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S076
|
