The BGS Lexicon of Named Rock Units — Result Details

Drummore Gravel Formation

Computer Code: DRGR Preferred Map Code: DrGr
Status Code: Full
Age range: Anglian Stage (QA) — Wolstonian Stage (QO)
Lithological Description: Clayey, sandy, gravelly diamicton containing abundant clasts of sandstone. Distinctly weathered.
Definition of Lower Boundary: Sharp, with Cassie Till Formation.
Definition of Upper Boundary: Unconformable, glacitectonic, with Clava Lodge Clay Member of the Clava Shelly Formation.
Thickness: 4.6m
Geographical Limits: Sheet NH 74SE.
Parent Unit: Inverness (Albion) Glacigenic Subgroup (IAG)
Previous Name(s): Drummore Gravel Member (-1515)
Coarse Gravel And Sand (-3372)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  River cliff of Finglack Burn. Section NH74SE E1 on "standard" map."Finglack Section" of Merritt (1990). 
Partial Type Section  "Main Pit" composite section of Horne and others, (1894), including their Boreholes 1 and 3. Section in former clay pit by Cassie Burn, excavated by Horne, and others (1894). Section NH74SE E5 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. 
Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). 
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S084