Outlines of Geology ...

abundance accumulations ammonite ancient animals appear aqueous rocks basaltic belonging bones carboniferous carboniferous strata cavern chalk marl cliffs coal colour consist chiefly contain coral coralline cretaceous cretaceous group deposits Devonian dirt bed discovered earth's crust earth's surface elephant embedded England eocene extinct species feet felspar ferns fish fissures fluviatile formed fossil fossil shells freshwater genera genus GEOLOGY Give some account globe granite greater number greensand ichthyosaurus igneous rocks iguanodon included inhabitants latter layers lias formation Lias group limestone London clay mammalia mass metamorphic rocks miocene occupy occur ocean old red sandstone oolite oolite group organic remains Palæotherium Pecten period Permian plants plesiosaurus pliocene portion Purbeck beds quartz recent red crag remarkable reptiles resembling river rock called sand shales silurian silurian group silurian rocks skeletons sometimes stone strata stratified rocks stratum teeth terebratula tertiary testacea tracts trees trias turrilites usually various kinds volcanic wealden group