A Correlation of Precambrian Rocks in the British Isles

amphibolite Anglesey Argyll Group Arvonian Badcallian Ballachulish basal base basement basic beds Brioverian Cadomian Caledonian Caledonides Cambrian Charnian coarse conglomerate Connemara correlation craton Crinan Dalradian Dalradian rocks Dearnley deposition diorite Donegal Downie Easdale emplaced episodes evidence facies folded Formation Geological Glen gneisses granite granulite Grit hornblende igneous inlier intrusions Ireland Islay Islay Subgroup isochron date Jl geol K-Ar late Precambrian Laxfordian Lewisian Complex Limestone lithological Loch Lond Longmyndian Lower Cambrian m.y. ago Malvernian Mayo metamorphic rocks metasediments migmatitic Moine Monian Moorbath Morar north-west Ordovician orogenic outcrop Outer Hebrides Palaeozoic pegmatites pelitic Phyllite Pitcher Precambrian Precambrian rocks Proc psammitic quartz Quartzite rhyolitic Rosslare Complex sandstone schists Scotland Scourian Scourie dyke sedimentary sediments sequence Shackleton shales Southern Highland Group Stoer stratigraphic Stretton structure succession suggests Supergroup supracrustal Sutton & Watson Tayvallich Tayvallich Subgroup tectonic thickness Tillite Torridon Group Torridonian tuffs turbidites unconformably Upper Uriconian volcanic rocks western