| Computer Code: |
LINK |
Preferred Map Code: |
Link |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Metalimestone, white to grey, thin-bedded, with thin interbeds of calc-silicate rock. |
| Definition of Lower Boundary: |
Not seen in outcrop (blown sand), but observed in Sandend Bay borehole; sharp transition from psammite and semipelite, muscovite-rich, banded pale grey and greenish with some calc-silicate beds. |
| Definition of Upper Boundary: |
Not seen (blown sand); probably sharp transition to muscovite-rich semipelite. |
| Thickness: |
Over 35m |
| Geographical Limits: |
Extends southsouthwest from coast section in Sandend Bay [NJ 558 664] for c.400m. A limestone bed at Cairnton [NJ 544 635] may belong to this unit. |
| Parent Unit: |
Tarnash Phyllite And Limestone Formation (TNPL)
|
| Previous Name(s): |
Middle part of Sandend Group [Obsolete Name and Code: Use LINK, TNPL]
(-3525)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Disused, flooded quarry in middle of raised beach, Sandend 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
|
