The BGS Lexicon of Named Rock Units — Result Details
Old Hythe Semipelite Member
| Computer Code: | OLHL | Preferred Map Code: | OlHL |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ) | ||
| Lithological Description: | Finely interbedded semipelite and micaceous psammite with lenses of quartzite and white to cream metalimestone. | ||
| Definition of Lower Boundary: | Sheared boundary with migmatitic semipelite and minor psammite of Cowhythe Psammite Formation. | ||
| Definition of Upper Boundary: | Base of lowest massive metalimestone bed of Boyne Castle Limestone Member. | ||
| Thickness: | c.150m on coastal section; progressively overstepped southwards by Whitehills Grit Formation. Sheared and tightly folded on coast. | ||
| Geographical Limits: | From Moray Firth coast (Old Hythe to Boyne Bay) [NJ 6140 6630 - NJ 6155 6625] to Hill of Chattie [NJ 5900 6250]. | ||
| Parent Unit: | Boyne Limestone Formation (BOYL) | ||
| Previous Name(s): | Old Hythe Limestone Member [Obsolete Name and Code: Use OLHL]
(-1744)
Lower part of Boyne Limestone [Obsolete Name and Code: Use OLHL] (-3596) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Coastal section across Old Hythe Bay. | ||
| 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. | |||
| Stephenson, D and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. | |||
| Harris, A L, Haselock, P J, Kennedy, M J and Mendum, J R, 1994. The Dalradian Supergroup in Scotland, Shetland and Ireland. 33-53 in Gibbons, W E and Harris, A L (editors). A revised correlation of Precambrian rocks in the British Isles. Special Report of the Geological Society, London, No.22. | |||
| 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 | |||