| Computer Code: |
BLTI |
Preferred Map Code: |
BLT |
| Status Code: |
Full |
| Age range: |
Anglian Stage (QA)
— Wolstonian Stage (QO) |
| Lithological Description: |
Diamicton, stony, sandy, strong brown or yellowish brown. Mostly rock types derived short distance to the northwest. Locally containing flint and quartzite from the Buchan Ridge Gravels. |
| Definition of Lower Boundary: |
Unconformable on bedrock. |
| Definition of Upper Boundary: |
Unconformable with Pitlurg Till Formation or other, younger glacial or glaciofluvial deposits. |
| Thickness: |
2m or more |
| Geographical Limits: |
Probably widespread over central Buchan and as pockets to the south and east (beneath Logie-Buchan Glacigenic Subgroup). |
| Parent Unit: |
East Grampian (Albion) Glacigenic Subgroup (EGAG)
|
| Previous Name(s): |
Inland Series Till
(-67)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Tillybrex gravel pit (now filled in) Section NK03SW1 of Merritt, (1981). 6km northeast of Ellon. |
| Type Section |
Railway cutting at Bellscamphie (abandoned). Trial pits in Hall and Jarvis, 1995. 7km eastnortheast of Ellon. |
| Reference(s): |
| Merritt, J W. 1981. The sand and gravel resources of the country around Ellon, Grampian Region. Description of 1:25 000 resource sheet NJ93 with parts of NJ82, NJ83 and NJ92, NK03 and parts of NK02 and NK13. Mineral assessment Report of the Institute of Geological Sciences, No. 76. |
| Merritt, J W, Auton, C A, Connell, E R, Hall, A M and Peacock, J D. 2003. The Cainozoic geology and landscape evolution of north-east Scotland. Memoir of the British Geological Survey, Sheets 66E, 67, 76E, 77, 86E, 87W, 87E, 95, 96W, 96E and 97 (Scotland) |
| Hall, A M and Jarvis, J. 1995. A multiple till sequence near Ellon, Grampian Region: T F Jamieson's "indigo boulder clay" re-examined. Scottish Journal of Geology, Vol.31, 53-59. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S087
S087
|
