Petrology of the igneous rocks of the Moffat District, Southern Uplands, Scotland

This report describes the mineralogy and petrology of the various igneous rocks exposed in the Moffat District (Sheet 16) of the Southern Uplands of Scotland as part of a British Geological Survey’s research programme. These include Ordovician metabasalts and metagabbroic rocks, Silurian to Lower Devonian andesitic to rhyolitic high level intrusions as well as the Carboniferous tholeiitic quartz-dolerite and basalt dykes. A total of 23 thin sections of volcanic and intrusive igneous rock were examined during this study with the work forming part of the Integrated Geological Survey (North), Southern Uplands Regional Mapping Programme.