The BGS Lexicon of Named Rock Units — Result Details

Criffel-Dalbeattie Pluton

Computer Code: CDPL Preferred Map Code: CDPL
Status Code: Full
Age range: Emsian Age (DE) — Emsian Age (DE)
Lithological Description: An asymmetrically zoned intrusive body with an inner zone of medium- to coarse-grained porphyritic granite and an outer zone of foliated granodiorite. Both zones are intruded by thin aplite veins. A series of microdiorite dykes are linked genetically to the intrusion of the pluton.
Definition of Lower Boundary: Intrusive margin of the pluton against surrounding contact metamorphosed rock.
Definition of Upper Boundary: Not applicable.
Thickness: Modelling of gravity data indicates that it extends to a depth of 9km. (Lintern, B C and Floyd, J D. 2000; Bott and Masson Smith, 1960).
Geographical Limits: The pluton is exposed in south-west Scotland. It extends from Auchencairn Bay [NX 83 52] in the south-west to Mabie Forest [NX 94 71] in the north-east.
Parent Unit: Galloway Granitic Suite (GALGR)
Previous Name(s): CRIFFEL GRANITE, CRIFFEL AND DALBEATTIE (GRANITE) MASS
Alternative Name(s): CRIFFEL-DALBEATTIE GRANODIORITE COMPLEX.
Stratotypes:
Type Area  Porphyritic granite exposed in many disused quarries in the vicinity of Dalbeattie, eg. near Craignair Bridge. 
Reference Section  Foliated granodiorite crops out in the vicinity of Meikle Richorn. 
Reference(s):
Phillips, W J. 1956. The Criffel-Dalbeattie granodiorite complex. Quarterly Journal of the Geological Society of London, Vol. 112, p. 221 - 239. 
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). 
Horne, J, Peach, B N and Teall, J J H, 1896. Explanation of Sheet 5, Kirkcudbrightshire. Memoir of the Geological Survey, Scotland. 
Bott, M P H and Masson Smith, D. 1960. A gravity survey of the Criffel granodiorite and the New Red Sandstone deposits around Dumfries. Proceedings of the Yorkshire Geological Society, Vol. 32, p. 317 - 332. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S005 S006 S009