| Computer Code: |
COPE |
Preferred Map Code: |
SYMB |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Pelites, dark-grey, graphitic in parts, commonly andalusite-bearing, phyllitic to slaty. Bands of metabasalt and ultramafic rock, particularly in lower part. |
| Definition of Lower Boundary: |
Top of thick persistent unit of greywacke grit at the top of interbedded grits and metavolcanic rocks characteristic of the lower part of the Blackwater Formation. |
| Definition of Upper Boundary: |
Base of overlying thick quartzite (the Grumack Hill Quartzite Member). |
| Thickness: |
900m (based on outcrop width of 1km, with no allowance for probable folding). |
| Geographical Limits: |
SE flank of River Deveron Valley between Hill of Bank [NJ 3829] and Succoth [NJ 43 35] Cabrach area, Moray District, 1:50 000 sheets 75E (just), 85E and 86W. |
| Parent Unit: |
Blackwater Formation (BLWR)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Burn of Hillock from 200m above Hillock of Echt Farm to 100m below junction with Garnel Burn tributary. |
| Reference Section |
Burn of Glentilt from Little Gouls to end of outcrop. |
| Reference Section |
Allt Deveron between Sauchen Pot and Burn of Sliach. |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S075
S086
|
