The BGS Lexicon of Named Rock Units — Result Details
Pitlurg Farm Till Formation
Computer Code: | PGTI | Preferred Map Code: | PIT |
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Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
Lithological Description: | A very dark to dark grey clayey, silty, pebbly, slightly calcareous, diamicton. Besides local rock types, it includes red (Devonian) sandstone, white, probably Mesozoic, sandstone, and shell fragments. | ||
Definition of Lower Boundary: | Generally unconformable on bedrock or older tills, such as the Bellscamphie Till Formation. | ||
Definition of Upper Boundary: | Generally unconformable with the Hatton Till Formation. | ||
Thickness: | At least 7m | ||
Geographical Limits: | Coastal lowland north of Aberdeen, east of Ellon and south of Peterhead. | ||
Parent Unit: | Banffshire Coast and Caithness Glacigenic Subgroup (BCD) | ||
Previous Name(s): | Pitlurg Farm Till [Obsolete Name and Code: Use PGTI]
(-4256)
Indigo boulder clay [Obsolete Name and Code: Use PGTI] (-3611) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Abandoned railway cutting at Bellscamphie, 7km eastnortheast of Ellon. Trial pits in Hall and Jarvis, 1995; boreholes in Merritt, 1981. | ||
Reference(s): | |||
Jamieson, T F. 1906. The glacial period in Aberdeenshire and the southern border of the Moray Firth. Quarterly Journal of the Geological Society of London, Vol.62, 13-39. | |||
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. | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S097 |