The Western Part of the Criffell–Dalbeattie Igneous Complex

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Abstract
The Criffell—Dalbeatbie complex, which is the largest of the Galloway “granites”, was first described by Peach and Horne (Horne and others 1896, pp. 22–8, 41–57). A general description of these “granites” was incorporated in the memoir on “The Silurian Rocks of Great Britain” (Peach and Horne 1899, pp. 607–31 ). Three of these masses have received further study in recent years : Loch Doon, by Gardiner and Reynolds (1932); Cairnsmore of Carsphairn, by Deer (1935); and Cairnsmore of Fleet, by Gardiner and Reynolds (1936). The western part of the Griffell—Dalbeattie mass is re-examined in the present paper. The rocks of this district are fairly well exposed on the hill-sides and along the shores, but extensive areas are covered by raised-beach deposits, alluvium, glacial drift, and by the sand and mud of the Solway. Much of the low ground is under cultivation, but bare rock surfaces are common on the high ground culminating in Bengairn (1275 feet), and on the rocky peninsulas of Torr and Almorness. The metamorphosed sedimentary rocks of the aureole and associated intrusions of porphyrite form high ground to the north and west of the plutonic outcrop. On the southern side they form the sea-cliffs which have been breached by the Bay of Auchencairn and the estuary of the river Urr. The distribution of the various rocks is shown on the accompanying map (Pl. XXX). The plutonic rocks comprise three granodiorites and a quartz-diorite. The granodiorites are either in direct contact with the quartz-diorite, however,is variable and near

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