The BGS Lexicon of Named Rock Units — Result Details

Culvennan Intrusion

Computer Code: CULV Preferred Map Code: CULV
Status Code: Full
Age range: Pridoli Epoch (SO) — Early Devonian Epoch (DL)
Lithological Description: Minor pluton of pyroxene diorite, with two small subsidiary outcrops (each c. 200m diameter) to the south of the main body. An associated breccia-filled vent lies about 0.5km to the west of the main body.
Definition of Lower Boundary: Intrusive contact.
Definition of Upper Boundary: Intrusive contact.
Thickness: Elongated body c. 2km x 0.7km, with long axis orientated c. 075 degrees
Geographical Limits: Kirkcowan area, southwest Scotland.
Parent Unit: Galloway Granitic Suite (GALGR)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Culvennan Fell, 4kmnorth of Kirkcowan, southwest Scotland. 
Reference(s):
Barnes, R P, 1995. Geology of the Kirkcowan, Wigtown and Whithorn districts. Sheets 4W, 4E and 2, Scotland. Memoir of the British Geological Survey. 
Parker, M E, Cooper, D C, Bide, P J and Allen, P M. 1981. Mineral exploration in the area around Culvennan Fell, Kirkcowan, south-western Scotland. Mineral Reconnaissance Programme Report, Institute of Geological Sciences, No. 42. 
Stephens, W E and Halliday, A H. 1984. Geochemical contrasts between Late Caledonian granitoid plutons of northern, central and southern Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol. 75, p. 259 - 273. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S004