The Quarterly Journal of the Geological Society of London, Volumen 114

albite amygdales anomalies appears Arabia axial bands basalt basin beds belt biotite block Carboniferous chlorite composition conglomerate core Creag crystals Dalradian Dead Sea deformation deposition direction Donegal dykes east eastern evidence facies fault feet feldspar Fetlar flow folds formation Friesland Geol geological gneisses Gondwana Gondwanaland granite Granodiorite greenstone greywacke Grits Hecla Hoek horizontal indicated intrusion Knucklas lavas Lewisian Limestone lineation Llanbadoc Loch lower Ludlovian magma Main Granite margin metamorphism metasomatized mica miles minerals Moine movement mudstone nappe north-east Norwick occur Older Granodiorite olivine outcrop parallel pegmatite pelitic Permian phase phyllites plagioclase pulchella Quarry quartz Quartzite rafts Red Sea region Rift rocks Sandstone Saxa Vord Schichallion schists schuppen zone sediments seen Series serpentine shales shear south-west spilites stratigraphical structures suggested surface tectonic teschenite thickness thin tillite Trawenagh Bay Triulzi Unst Upper Valley vertical volcanic Wadi western