The BGS Lexicon of Named Rock Units — Result Details
Stotfield Cherty Rock Formation
| Computer Code: | STOT | Preferred Map Code: | Stot |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Late Triassic Epoch (TU) — Late Triassic Epoch (TU) | ||
| Lithological Description: | Sedimentary rock comprising massive pale grey chert, sandy limestone, calcareous sandstone and silicified sandstone of pedogenic origin. Includes red and green mudstones with carbonate concretions in Sutherland. | ||
| Definition of Lower Boundary: | Base of the pedogenic sedimentary rock (after calcrete) above the Lossiemouth Sandstone Formation or, where the latter is absent, the Burghead Sandstone Formation. | ||
| Definition of Upper Boundary: | The unconformity with the Jurassic conglomerate, mudstones, siltstones and sandstones above. | ||
| Thickness: | To 30m | ||
| Geographical Limits: | Moray Firth Basin, Scotland. | ||
| Parent Unit: | New Red Sandstone Supergroup (NRS) | ||
| Previous Name(s): | Cherty Rock of Stotfield [Obsolete Name and Code: Use STOT]
(-3699)
Marls and Cherty Rock [Obsolete Name and Code: Use STOT] (-4348) The Cherty Rock [Obsolete Name and Code: Use STOT] (-3057) |
||
| Alternative Name(s): | Stotfield Calcareous Formation |
||
| Stratotypes: | |||
| Partial Type Section | Coastal section 100 m. north of Lossiemouth harbour. Peacock, et al., 1968. | ||
| Partial Type Section | 70 m. WSW of Dunrobin pier near Golspie, Sutherland. Batten, et al., 1986. | ||
| Reference(s): | |||
| Naylor, H, Turner, P, Vaughan, D J and Fallick, A E. 1989. The Cherty Rock, Elgin: A petrographic and isotopic study of a Permo-Triassic calcrete. Geological journal, Vol. 24, p. 205 - 221. | |||
| Peacock, J D, Berridge, N G, Harris, A L, May, F. 1968. The geology of the Elgin District. Memoir of the Geological Survey of Scotland. Sheets 86 and 96 (Scotland). (Edinburgh: HMSO). | |||
| Judd, J W. 1873. The secondary rocks of Scotland. Quarterly Journal of the Geological Society, London, Vol.29, 97-195. | |||
| Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. | |||
| Frostick, L, Reid, I, Jarvis, J and Eardley, H. 1988. Triassic sediments of the Inner Moray Firth, Scotland: early rift deposits. Journal of the Geological Society (London), Vol. 145, 235-248. | |||
| British Geological Survey. 1999. Golspie. Scotland Provisional Sheet 103W. Solid and Drift. 1:50 000. | |||
| Batten, D J, Trewin, N H, and Tudhope, A W. 1986. The Triassic-Jurassic junction at Golspie, Inner Moray Firth Basin. Scottish Journal of Geology, Vol. 22, Pt. 1, 85-98. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S095 S103 | |||