The BGS Lexicon of Named Rock Units — Result Details
Purple Sandstone Member
| Computer Code: | PRS | Preferred Map Code: | PRS |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Wenlock Epoch (SW) — Ludlow Epoch (SU) | ||
| Lithological Description: | Medium-grained, purple, quartzo-feldspathic sandstone, pebbly in places in lower part. | ||
| Definition of Lower Boundary: | Unconformity. Lowest occurrence of purple sandstone, locally conglomeratic, resting on rocks of the Highland Border Complex. | ||
| Definition of Upper Boundary: | At the base of the lowest metre-thick red siltstone bed in the overlying Castle of Cowie Member. | ||
| Thickness: | 93m | ||
| Geographical Limits: | Stonehaven area. | ||
| Parent Unit: | Cowie Sandstone Formation (CWE) | ||
| Previous Name(s): | Purple Sandstone Member
(PRS)
Purple Sandstone Member (PRS) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Coastal section at Ruthery Head. | ||
| Reference(s): | |||
| Carroll, S, 1994. Geology of the Stonehaven District. 1:10 000 Sheets NO88NW, NO88NE, NO88SW and NO88SE. British Geological Survey Technical Report WA/94/19. | |||
| Armstrong, M, Donovan, R M, and Paterson, I B. 1978. Angus and Kincardine. In A field guide to selected outcrop areas of the Devonian of Scotland, the Welsh Borderland and South Wales. Friend, P F, and Williams, B P J (editors). Palaeontological Association. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||