The BGS Lexicon of Named Rock Units — Result Details
Fordyce Limestone Formation
| Computer Code: | FORD | Preferred Map Code: | SYMB |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ) | ||
| Lithological Description: | Mostly semipelite and pelite with beds of metalimestone, some thick and massive. Minor beds of calc-silicate rock and quartzite. | ||
| Definition of Lower Boundary: | Base of dark pelites and semipelites overlying paler calcareous, banded phyllitic semipelites and psammites of the Tarnash Phyllite and Limestone Formation. (Base not seen in type section.) | ||
| Definition of Upper Boundary: | Top of dark pelites and semipelites beneath Durn Hill Quartzite Formation. (Top not seen in type or reference sections.) | ||
| Thickness: | 700m maximum (based on outcrop width and average dip), >160m on coast at Sandend Bay. | ||
| Geographical Limits: | Sandend Bay to Mill of Wood Burn, Keith (Sheets 86W, 96W) | ||
| Parent Unit: | Blair Atholl Subgroup (DABA) | ||
| Previous Name(s): | Sandend Formation [Obsolete Name And Code: See SNDL, TNPL And FORD]
(DASG)
Sandend Group (Upper Part) [Obsolete Name and Code: Use FORD] (-4048) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Burn of Fordyce from Sandend Bay to Newpark, Fordyce. | ||
| Reference(s): | |||
| Stephenson, D, et al. 1993. Stratigraphy and correlation of the Dalradian rocks of the East Grampian Project area. British Geological Survey Technical Report WA/93/91. | |||
| Read, H H, 1923. Geology of the country around Banff, Huntly and Turriff, Lower Banffshire and north-west Aberdeenshire. Memoir of the Geological Survey, Scotland Sheets 86 and 96 (Scotland). | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S096 S086 | |||