The BGS Lexicon of Named Rock Units — Result Details
Finglack Till Formation
Computer Code: | FINT | Preferred Map Code: | FinT |
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Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
Lithological Description: | Stiff stony sandy clay diamicton (Lodgement Till), predominantly sandstone clasts. | ||
Definition of Lower Boundary: | Sharp, unconformable, glacitectonic contact with Clava Shelly Formation or with bedrock. | ||
Definition of Upper Boundary: | Sharp contact with glaciofluvial sheet deposits, ice contact deposits or moundy glacial deposits. | ||
Thickness: | 8m or more | ||
Geographical Limits: | Sheet 84W (Fortrose) | ||
Parent Unit: | Inverness Glacigenic Subgroup (INVG) | ||
Previous Name(s): | Boulder clay [Obsolete Name and Code: Use TILL]
(BOC)
Boulder clay [Obsolete Name and Code: Use TILL] (BOC) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | River cliff of Finglack Burn. Section NH74SE E1 on 'standard' map. 'Finglack section' of Merritt (1990). | ||
Type Section | 'Main Pit' composite section of Horne and others (1894). River cliff section of Cassie Burn exposure NH74SE E5 on 'standard' map. | ||
Reference(s): | |||
Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). | |||
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, 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. | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S084 |