| Computer Code: |
QH |
Preferred Map Code: |
SYMB |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Mixed psammite, semipelite and pelite, with rare beds of calc-silicate rock.In the Balnagowan Hill - Queen's Hill area, discrete units of psammite and pelite can be mapped out. |
| Definition of Lower Boundary: |
On Sheet 65E, top of Balnacraig Metabasite Formation (Easdale Subgroup); not seen on sheets 66W, 66E, 76W and 76E. |
| Definition of Upper Boundary: |
Incoming of dominantly calcareous material at the base of the Deeside Limestone Formation (Sheet 66W) / Water of Tanar Limestone Formation (Sheet 65E) (Tayvallich Subgroup). |
| Thickness: |
Approximately 1700m in northern Sheet 65E, but this may be an overestimate, due to tectonic thickening. |
| Geographical Limits: |
Forms a 4-6km wide strip on Sheet 65E from Gallows Hillock (NO295 797) to Pannanich Hill (NO390 950), and a belt up to 6km wide on Mid-Deeside (Sheets 66W, 66E, 76W, 76E) from near Tombae (NO425 970) at least as far as Banchory (NO695 953). |
| Parent Unit: |
Crinan Subgroup (DBCN)
|
| Previous Name(s): |
Queen's Hill Quartzite and Mica-Schist Group [Obsolete Name and Code: Use QH]
(-4854)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
(For pelites and semipelites) upper slopes of Balnagowan Hill. |
| Type Area |
(For psammites) upper part of Queen's Hill, Aboyne. |
| Reference(s): |
| Gould, D. 1997. Geology of the area around Alford and Inverurie. Memoir of the British Geological Survey, Sheets 76E and 76W (Scotland). |
| Read, H H, 1928. The Highland Schists of Middle Deeside and Upper Glen Muick. Transactions of the Royal Society of Edinburgh, Vol.55, p.755-772. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S065
S066
S076
S076
S066
|
