| Computer Code: |
WHYL |
Preferred Map Code: |
WhyL |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Calc-silicate rock, calcareous semipelite or thin impure metalimestone, laminated and striped, passing upward into mainly calcareous semipelite with minor thin metalimestone and lenses of reworked carbonate material. |
| Definition of Lower Boundary: |
Top of highest massive metalimestone bed at the top of the Boyne Castle Limestone Member. |
| Definition of Upper Boundary: |
Local unconformity at incoming of first major psammite bed (locally gritty) at base of Whitehills Grit Formation. |
| Thickness: |
c.500m on coastal section; progressively overstepped southwards by Whitehills Grit Formation. |
| Geographical Limits: |
From Moray Firth coast (Old Hythe to Boyne Bay) [NJ 6165 6608 - NJ 6300 6580] to Auchmillie [NJ 5900 6370]. |
| Parent Unit: |
Boyne Limestone Formation (BOYL)
|
| Previous Name(s): |
Basal Part Of Whitehills Group [Obsolete Name and Code: Use WHYL]
(-4976)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Coastal section from mouth of Burn of Boyne (Boyne Bay) to Whyntie Head. |
| Reference(s): |
| Stephenson, D and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. |
| 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). |
| 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. |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S096
|
