The BGS Lexicon of Named Rock Units — Result Details
Caesar's Camp Gravel Formation
| Computer Code: | CCGR | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Early Pleistocene (QPE) — Early Pleistocene (QPE) | ||
| Lithological Description: | Unbedded and thickly bedded cobble gravel with interbedded coarse sands. Gravels are dominantly nodular flint to 0.2m diameter, with subordinate quartz and Greensand chert. The sand is subangular, dominantly quartz with some flint, and occurs as horizontal planar-bedded units, cross-bedded lenses, and channel-fill sands and silts. Fluvial and periglacial in origin, deposited by rivers draining to the northwest. Well-defined palaeosol in upper part of gravelly deposits, overlain by silty fine sand of aeolian origin. | ||
| Definition of Lower Boundary: | Sharp, highly irregular contact with Palaeogene sands, obscured by a veneer of solifluction deposits. | ||
| Definition of Upper Boundary: | Land surface; no overlying deposits. | ||
| Thickness: | To 6m | ||
| Geographical Limits: | Restricted to plateau remnants between Aldershot and Farnham, Surrey. | ||
| Parent Unit: | Dunwich Group (DUNW) | ||
| Previous Name(s): | Caesar's Camp Gravel (A) [Obsolete Code: Use CCGR]
(CCGA)
Caesar's Camp Gravel [Obsolete Name and Code: Use CCGR] (-2062) Caesar's Camp Gravel (B) [Obsolete Code: Use CCGR] (CGCA) Caesar's Camp Formation [Obsolete Name and Code: Use CCGR] (-2673) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Plateau remnant 3km north of Farnham, at 175-187m OD. Clark and Fisher, 1983. | ||
| Reference(s): | |||
| Dines, H G and Edmunds, F H. 1929. The Geology of the country around Aldershot and Guildford. Memoir of the Geological Survey of Great Britain, Sheet 285. [London: HMSO.] | |||
| Bury, H. 1922. Some high-level gravels of North-East Hampshire. Proceedings of the Geologist's Association, Vol. 33, 81-103. | |||
| Ellison, R A, Williamson, I T and Humpage, A J. 2002. Geology of the Guildford district - a brief explanation of the geological map. Sheet explanation of the British Geological Survey. 1:50 000 Sheet 285 Guildford (England and Wales). | |||
| Gibbard, P L. 1999. The Thames Valley, its tributaries and their former courses. 45-58 in Bowen, D Q (Editor), A revised correlation of Quaternary deposits in the British Isles. [London: The Geological Society.] | |||
| Clarke, M R, and Fisher, P F, 1983. The Caesar's Camp Gravel - an early Pleistocene fluvial periglacial deposit in Southern England. Proceedings of the Geologist's Association, Vol.94, 345-355. | |||
| Clarke, M R, and Dixon, A J. 1981. The Pleistocene braided river deposits in the Blackwater area of Berkshire and Hampshire, England. Proceedings of the Geologist's Association, Vol.92, 139-157. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E285 | |||