The BGS Lexicon of Named Rock Units — Result Details
Old Hythe Till Formation
| Computer Code: | OHT | Preferred Map Code: | oht |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Dimlington Stadial (QDD) — Dimlington Stadial (QDD) | ||
| Lithological Description: | Diamicton, silty, clayey, stony, dark yellowish brown to dark grey, angular to well rounded clasts of psammite, quartzite, pink granite, Devonian and Triassic sandstone, amphibolite and (importantly) fresh gabbro and troctolite. | ||
| Definition of Lower Boundary: | Gradational contact with underlying diamictons (including rafts) of the Whitehills Glacigenic Formation, or unconformable contact with Boyne Craig Till Formation, or on bedrock. | ||
| Definition of Upper Boundary: | Generally the land surface or overlain conformably by glaciofluvial or glaciolacustrine deposits. | ||
| Thickness: | Over 10 m. | ||
| Geographical Limits: | Scotland Sheets S95 (Elgin) and 96W (Portsoy). | ||
| Parent Unit: | Central Grampian Glacigenic Subgroup (CGDR) | ||
| Previous Name(s): | Old Hythe Till Formation [Obsolete Name and Code: Use OHT]
(-3595)
Upper Till (Unit 4) [Obsolete Name and Code: Use OHT] (-4235) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Sections in the western side of Boyne Limestone Quarry. Peacock and Merritt, 2000. | ||
| Reference(s): | |||
| 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. | |||
| Peacock, J D, 1966. Note on the drift sequence near Portsoy, Banffshire. Scottish Journal of Geology, Vol.2, 35-37. | |||
| Peacock, J D and Merritt, J W. 2000. Glacial deposits at the Boyne Bay Limestone Quarry, Portsoy and their place in the late Pleistocene history of northeast Scotland. Journal of Quaternary Science. Vol.15, 543-555. | |||
| 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) | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S095 S096 | |||