The BGS Lexicon of Named Rock Units — Result Details
Todber Freestone Member
Computer Code: | TOF | Preferred Map Code: | TF |
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Status Code: | Full | ||
Age range: | Oxfordian Age (JO) — Oxfordian Age (JO) | ||
Lithological Description: | Oolitic limestone, fine- to medium-grained, well sorted, commonly cross bedded, sparingly fossiliferous. | ||
Definition of Lower Boundary: | At the base of the lowest ooidal limestone. | ||
Definition of Upper Boundary: | At the top of the non-bioclastic, or evenly bedded, ooidal limestone. | ||
Thickness: | 0 - 5m | ||
Geographical Limits: | Across the northern half of the Shaftesbury Sheet (313). | ||
Parent Unit: | Stour Formation (STOU) | ||
Previous Name(s): | Marnhull and Todber Freestone [Obsolete Name and Code: Use TOF]
(-3085)
False Bedded Limestone (-575) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Old quarries, 300m northeast of Gannetts, Todber. | ||
Reference(s): | |||
Blake, J F, and Huddleston, W H. 1877. On the Corallian rocks of England. Quarterly Journal of the Geological Society of London, Vol. 33, 260-405. | |||
Bristow, C R, 1989. Geology of Sheets 71NE and 71SE. (Marnhull-Sturminster Newton, Dorset) Part of 1:10,000 Sheet 313 (Shaftesbury). British Geological Survey Technical Report WA/89/59. | |||
Wright, J K, 1980. Oxfordian Correlation Chart. "In" Cope, C J W, (Editor). A correlation of Jurassic rocks in the British Isles, Part two: Middle and Upper Jurassic. Geological Society of London Special Report No.15. (p.61-76 in Correlation Chart). | |||
Wright, J K, 1981. The Corallian rocks of north Dorset. Proceedings of the Geologists' Association, Vol.92, 17-32. | |||
Arkell, W J. 1933. The Jurassic System in Great Britain [Oxford: Clarendon Press.] | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E313 E281 |