The Quarterly Journal of the Geological Society of London, Volumen 121

acid age-determinations analyses antiform appear Ardnamurchan Arenicola authors Ballateare basement basic beds belt biotite borehole boulder-clay boundary breccia Caledonian channel chemical clay complex composition conglomerate country-rocks deformation deposits dolerite dome dykes east end-Tertiary Eocene evidence faulting fauna feldspar folds Foraminifera gabbro garnetiferous mica-schists geol Geological glacial Glen Glomfjord gneisses granite gravel greywacke Group Henllan igneous injection intrusion isotopic K-Ar Karagwe-Ankolean Kenya late-glacial layers Lepidocyclina Limestone lithology Lond Lower magma marbles margin material Melinau Gorge Melöy metamorphism miles minerals Miocene Moine Series mud flats muscovite nappe northern Ntungamo Nummulites occur Oligocene Orrisdale pegmatites pelitic plagioclase Pre-Cambrian probably quartz quartzite Rakdasafaka region Rift rocks samples sand flats sand grains sandstone schistosity schists sedimentary sediments slate species specimens stratigraphical structures sub-Miocene suggests surface Surv Svartisen Sweden synform tectonic Teifi valley Tertiary textures thick Upper veins volcanic whole-rock zone