The BGS Lexicon of Named Rock Units — Result Details
Cadder Sand and Gravel Formation
| Computer Code: | CADR | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
| Lithological Description: | The typical lithological assemblages consist of mainly framework-supported bouldery gravel and sand, and coarse- to fine-grained, locally pebbly, sand with silt. In a geotechnical sense, the deposits are usually dense to very dense. Much of the gravel is thickly bedded and trough cross-bedded in sets up to 3m thick. These interfinger with sands. The sands are trough cross-bedded, ripple-laminated and horizontally laminated. | ||
| Definition of Lower Boundary: | Unconformity on bedrock or on older unnamed Quaternary strata or the Baillieston Till Formation. | ||
| Definition of Upper Boundary: | Unconformity or glacial deformation boundary below younger Quaternary till. | ||
| Thickness: | From a veneer to more than 45m. | ||
| Geographical Limits: | Central Scotland, related to ice streams sourced in the Highlands (in contrast to the Southern Uplands) during the Dimlington Stadial; currently identified in the Glasgow area. | ||
| Parent Unit: | Midland Valley Glacigenic Subgroup (MVG) | ||
| Previous Name(s): | Cadder Formation [Obsolete Name and Code: Use CADR]
(-3894)
Cadder Sand Formation [Obsolete Name and Code: Use CADR] (-102) Cadder Clay Member [Obsolete Name and Code: Use CADR] (-2042) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Degraded temporary section at Wilderness Plantation, north of Bishopsbriggs. Browne and McMillan, 1989a. | ||
| Reference(s): | |||
| Browne, M A E, and McMillan, A A. 1989b. Geology for land use planning: drift deposits of the Clyde valley Volume 1: Planning Report. British Geological Survey Technical Report WA/89/78. | |||
| McMillan, A A, Hamblin, R J O and Merritt, J W. 2005. An overview of the lithostratigraphical framework for the Quarternary and Neogene deposits of Great Britain (onshore). British Geological Survey Research Report RR/04/04. | |||
| Forsyth, I H, Hall, I H S and McMillan, A A. 1996. Geology of the Airdrie district. Memoir of the British Geological Survey, Sheet 31W (Scotland). | |||
| Hall, I H S, Browne, M A E and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E (Scotland). | |||
| Rolfe, W D I. 1966. Wooly rhinoceros from the Scottish Pleistocene. Scottish Journal of Geology, Vol.2, 253-258. | |||
| Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. | |||
| Browne, M A E, and McMillan, A A. 1989a. Quaternary geology of the Clyde valley. British Geological Survey Research Report, SA/89/1. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S030 | |||