| Computer Code: |
CUTI |
Preferred Map Code: |
CULT |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Pebbly silty clay diamicton containing shell fragments of high-boreal to low-arctic aspect, clasts typically well rounded, high sphericity. |
| Definition of Lower Boundary: |
Sharp, unconformable or glacitectonic boundary with either bedrock or the Cassie Till Formation. |
| Definition of Upper Boundary: |
Sharp, unconformable, glacitectonic boundary with the Dalroy Sand Member. |
| Thickness: |
2.5m at type section. |
| Geographical Limits: |
Sheet NH74SE. |
| Parent Unit: |
Clava Shelly Formation (CLSH)
|
| Previous Name(s): |
Clava Shelly Till Member [Obsolete Name And Code: Use CUTI]
(CLST)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Lectostratotype (after Peacock, 1975, section III). River cliff section of Cassie Burn. Section NH74SE/E9 on 'standard' map. |
| Reference(s): |
| Merritt, J W, 1990. The lithostratigraphy at Clava, Inverness-shire and a new model for the origin of its shell-bearing deposits as glacially-transported allochthons. "In" Auton, C A, Firth, C R and Merritt, J W. (Editors). Beauly to Nairn: Field Guide. Quaternary Research Association, Cambridge. |
| Horne, J and others, 1894. The character of the high-level shell-bearing deposits at Clava, Chapelhall and other localities. Report of the British Association for the Advancement of Science for 1883, p.483-514. |
| Peacock, J D, 1975. Depositional environment of glacial deposits at Clava, north-east Scotland. Bulletin of the Geological Survey of Great Britain, No.49. 31-37. |
| Merritt, J W 1992. The high-level marine shell-bearing deposits of Clava, Inverness-shire, and their origin as glacial rafts. Quaternary Science Reviews, Vol.11, 759-777. |
| Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S084
|
