The Quarterly Journal of the Geological Society of London, Volumen 109

analysed aperture Assynt band basaltic beds biotite biserial boulder-bed brachiopods caledonoid Cambrian camptonite Canisp Carboniferous chambers charnoid faults composition compression crystals Cushman d'Orbigny deposits described Devonian Dinas fault direction of movement dolerites downthrow Duncorn Hill dykes Dyrham east eruptions evidence fauna feet felspar Flaggy Series folds Foraminifera forms fossils Fuller's Earth gabbro Gaudryina genus Geol geological gneiss granitic gneiss Grit Gumba Highlands horizon hornblende igneous rocks intrusions Kiahera Kiakanga lamprophyres lapilli later lava layer limestone linear structures lineation localities Loch magma margin metamorphism metasomatism migmatite miles minerals Moine north-west occur ocean oligoclase oligoclase-biotite-quartz-gneiss oligoclase-dolerites Ornithella outcrop parallel pelitic Penderyn plagioclase potash-felspar Pre-Cambrian pyroxene quartz quartzite red earths Reuss Rugitela Rusinga Sandstone schists sediments Shales shells shown sills similar Slieve species specimens suggested surface tectonic thickness thin thrust thrust-plane tillite trend tuff-with-blocks tuffs Upper variation volcanic whorl zone