The BGS Lexicon of Named Rock Units — Result Details
Gourdon Sandstone Formation
| Computer Code: | GNF | Preferred Map Code: | GOU |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Silurian Period (S) — Early Devonian Epoch (DL) | ||
| Lithological Description: | A dull red, coarse-grained, pebbly, angular, lithic sandstone with clasts predominantly of fragments of volcanic rocks, and conglomerate. | ||
| Definition of Lower Boundary: | Not exposed, but stratigraphically above the Tremuda Bay Volcanic Formation. | ||
| Definition of Upper Boundary: | At the base of the lowest conglomerate bed within the Whitehouse Conglomerate Formation or at the base of the Crawton Volcanic Formation where the Whitehouse Conglomerate Formation is absent. | ||
| Thickness: | Up to 300 m thick. | ||
| Geographical Limits: | Gourdon to Inverbervie and Whistleberry (NO 860 753). | ||
| Parent Unit: | Dunnottar-Crawton Group (DRCR) | ||
| Previous Name(s): | Castle Hill Formation [Obsolete Name And Code: See GNF]
(CAH)
Gourdon Harbour Sandstone Member [Obsolete Name And Code: See GNF] (GHS) Gourdon Formation [Obsolete Name and Code: Use GNF, RCC] (-1568) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Coastal section at Gourdon. | ||
| Reference(s): | |||
| Browne, M A E, Smith, R A, and Aitken, A M. 2002. Stratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. British Geological Survey Research Report RR/01/04. 67 pp. | |||
| Carroll, S. 1994. Geology of the Inverbervie and Catterline district, 1:10 000 sheets NO87NW, NO87NE and NO87SW. British Geological Survey, Technical Report, WA/94/20. | |||
| Armstrong, M, and Paterson, I B. 1970. The Lower Old Red Sandstone of the Strathmore Region. Report of the Institute of Geological Sciences No. 70/12 | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S067 | |||