Outline of Historical Geology

ammonites anticline Arenig Armorican bands basal base Basin beds belt boulder brachiopods calcareous Caledonian Cambrian Caradocian Carboniferous rocks Chalk Clay Coal Measures coalfield coast conglomerates consists contain corals Crag Cretaceous Dalradian denudation deposited Devonian Dinantian east England Eocene erosion evidence facies faults fauna feet folding formation fossils Gault Geol geological glaciation goniatites granite graptolitic Greensand greywackes Group Highlands Hills horizons ice-sheets igneous inliers Ireland Isle Jurassic Lake District lamellibranchs lavas Lias limestones lithology Llandoverian locally London Lower Carboniferous Lower Palaeozoic marine marls metamorphism Middle Midland Valley Millstone Grit mudstones Namurian North Wales North-West occur Old Red Sandstone Oolite Ordovician outcrop overlying Palaeozoic pebbles Pennines period Permian Pleistocene Precambrian proved Purbeck quartzite sands Scotland sediment Series shales Shropshire Silurian slates South Wales Southern Uplands strata stratigraphical structures succession surface Tertiary thickness thin Trias trilobites unconformity Upper Viséan volcanic Weald Wenlockian Yorkshire zones