| Computer Code: |
DBTV |
Preferred Map Code: |
Tayv |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Dominated by calcitic limestone, in part slumped, resedimented; however, east of mid-Deeside the limestone is replaced by psammite and quartzite with thin beds of calcsilicate rock; lavas, hyaloclastites and graphitic pelites present in Tayvallich area; Banffshire Coast - thick semipelite and calc sequence in upper part. |
| Definition of Lower Boundary: |
Bottom of lowest limestone bed in Loch Tay Limestone Formation where present; from Glen Clova to Deeside change from dominant semipelite to psammite or quartzite with calcareous beds. |
| Definition of Upper Boundary: |
Top of highest limestone bed in Loch Tay Limestone Formation where present; in Glen Clova and Glen Esk below unit with beds of strongly magnetic semipelite, Banffshire Coast - incoming of dominantly turbiditic psammite and semipelite. |
| Thickness: |
Generally 100-250m, but in Aberdeenshire and Banffshire where semipelitic and psammitic lithologies come in, it may reach 2.5km |
| Geographical Limits: |
Connemara; North Mayo; Donegal; Newtown Stewart to east of Strabane; Armoy to Torr Head; Kintyre, Tayvallich Peninsula; Loch Awe; from Loch Fyne, via Tyndrum, Loch Tay, Loch Tummel, Glen Shee, Deeside, Donside and Moray Firth coast at Boyne Bay - Whitehills. |
| Parent Unit: |
Argyll Group (ARGY)
|
| Previous Name(s): |
Tayvallich Lavas [Obsolete Name and Code: Use DBTV]
(-202)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Tayvallich peninsula. (Gower, P J, 1977). |
| Reference(s): |
| Gower, P J, 1977. The Dalradian rocks of the west coast of the Tayvallich peninsula. Scottish Journal of Geology, Volume 13, 125-133. |
| Treagus, J E. 2001. Solid geology of the Schiehallion district. Memoir of the British Geological Survey, Sheet 55W (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 and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. |
| Harris, A L and Pitcher, W S, 1975. The Dalradian Supergroup. "In" Harris, A L, Shackleton, R M, Watson, J, Downie, C, Harland, W B and Moorbath, S. A correlation of the Precambrian rocks in the British Isles. Geological Society Special Report, No.6. p.52-75. Scottish Academic Press, Edinburgh. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S012
S020
S028
S029
S037
S037
S045
S045
S046
S047
S055
S055
S056
S065
S065
S066
S066
S075
S076
S085
S086
S087
S087
S096
N08
S029
S038
S096
S097
S054
S047
S047
S046
|
