| Computer Code: |
KHUV |
Preferred Map Code: |
SYMB |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Fine-grained pale green ultramafic rocks with abundant tremolitic amphibole, commonly fragmented/brecciated; and some metabasalts, aphyric but rarely pyroxene-phyric. Interbanded with greywacke grits and slaty to phyllitic pelites. |
| Definition of Lower Boundary: |
Base of lowest recognisable ultramafic sheet in the Blackwater Formation. |
| Definition of Upper Boundary: |
Top of highest recognisable ultramafic sheet in the Blackwater Formation. |
| Thickness: |
c. 400 to 500m (based on outcrop width with no allowance for probable folding). |
| Geographical Limits: |
500m-wide outcrop extending from Meikle Firbriggs [NJ 355 293], across the Black Water and along the Deveron Valley to Burn of Succoth [NJ 428 358], Cabrach area, Moray District. 1:50 000 sheets 75E and 85E. |
| Parent Unit: |
Blackwater Formation (BLWR)
|
| Previous Name(s): |
Part of Ardwell Bridge Lavas (Informal) [Obsolete Name and Code: Use KHUV]
(-4119)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Black Water, King's Haugh. |
| Type Area |
Kelman Hill, southeast flanks, from Bridgend to Bridge of Forleath. |
| Reference(s): |
| Fettes, D J, Lesley, A G, Stephenson, D, and Kimbell, S F. 1991. Disruption of Dalradian stratigarphy along the Portsey Lineament from new geological and magnetic surveys. Scottish Journal of Geology, Vol. 27, 57-73. |
| MacGregor, S M A and Roberts, J L, 1963. Dalradian pillow lavas, Ardwell Bridge, Banffshire, Geological Magazine, Vol. 100, 17-23. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S075
|
