| Computer Code: |
DCIG |
Preferred Map Code: |
notEntered |
| Status Code: |
Full, pending ratification |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Pebbly schistose grits, schistose grits, greywackes, black and green slates. Black slates occur with sporadic seams of dark lime and grit. Conglomerate also occurs. (Innellan Group = stratigraphic equivalent of the Dunoon Phyllites). |
| Definition of Lower Boundary: |
Drawn at base of semi-pelitic wacke of the Innellan Group where it rests conformably on psammitic wacke of the Bullrock Greywacke. |
| Definition of Upper Boundary: |
Drawn at unconformable upward change from conglomerate and semi-pelitic wacke of the Innellan Group to probable Upper Old Red Sandstone. |
| Thickness: |
1000m approx. |
| Geographical Limits: |
Strathclyde, Scotland. |
| Parent Unit: |
Not Entered (?)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Innellan, Strathclyde, Scotland. |
| Reference(s): |
| Harris, A L and others, 1973. A correlation of the Pre-Cambrian rocks in the British Isles. Geological Society of London Special Report No 6. |
| Roberts, J L, 1974. The structure of the Dalradian rocks in the south-west Highlands of Scotland. Journal of the Geological Society, Vol.130, p.93-124. |
| Paterson, I B and others. 1990. Geology of the Greenock district. Memoirs of the Geological Survey of Great Britain, Sheet 30W. (Scotland). |
| Roberts, J L, 1966. Sedimentary affiliations and stratigraphic correlation of the Dalradian rocks in the south-west Highlands of Scotland. Scottish Journal of Geology, Vol.2, 200-223. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
