A Manual of Elementary Geology; Or, The Ancient Changes of the Earth and Its Inhabitants: As Illustrated by Geological Monuments

alluvium Alps alternate ancient animals aqueous argillaceous augite Auvergne basalt beds bottom breccia calcareous called carbonate carboniferous character clay cliffs coal composed cone conglomerate consist containing corals crag crater Cretaceous crystalline crystals denudation deposits dikes earth England Eocene eruptions extinct feet thick felspar fish fissures flint formations fossil fossiliferous fragments freshwater genera genus Geol geological geologists gneiss granite gravel greensand greenstone height hills horizontal hornblende hypogene igneous island lakes land lava layers Lias lime limestone lower marl mass matter metamorphic mica miles mineral Miocene mountain newer observed occur Oolite organic remains origin pebbles period places plants Pliocene plutonic rocks portion quadrupeds quartz red sandstone region resembling river sand schist scoriæ seen shale siliceous Silurian slate sometimes species stone strata stratified supposed surface tertiary testacea trachyte trap tuff upper valley veins vertical volcanic rocks Wealden white chalk