| Computer Code: |
INGL |
Preferred Map Code: |
INGV |
| Status Code: |
Index Level |
| Age range: |
Emsian Age (DE)
— Emsian Age (DE) |
| Lithological Description: |
Subvolcanic explosion-breccia vent, with mainly igneous rocks set in a matrix of decomposed lamprophyre. |
| Definition of Lower Boundary: |
The intrusive contacts with the country rock is poorly exposed, which together with diffuse internal structures, makes field relationships difficult to define. |
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
Unit thickness is unknown, but the vent is about 50m in diameter. |
| Geographical Limits: |
Kirkcudbright Sheet 5W (Scotland). |
| Parent Unit: |
Black Stockarton Moor Subvolcanic Complex (BSTM)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Vent, 1km SSW of Twynholm. Rock, Cooper & Gasgarth, 1986. |
| Reference(s): |
| Rock, N M S, Cooper, C and Gaskarth, J W. 1986 Late Caledonian subvolcanic vents and associated dykes in the Kirkcudbright area, Galloway, South-West Scotland. Proceedings of the Yorkshire Geological Society, Vol. 46, 29-37. |
| Leake, R C and Cooper, C. 1983. The Black Stockarton Moor Subvolcanic Complex, Galloway. Journal of the Geological Society, London. Vol. 140, 665-676. |
| Lintern, B C and Floyd, J D. 2000. Geology of the Kirkcudbright-Dalbeattie District. Memoir of the British Geological Survey, Sheets 5W, 5E and part of 6W (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S005
|
