A Manual of Elementary Geology: Or, The Ancient Changes of the Earth and Its Inhabitants as Illustrated by Geological MonumentsJ. Murray, 1852 - 512 páginas |
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A Manual of Elementary Geology; Or, the Ancient Changes of the Earth and Its ... Charles Lyell Sin vista previa disponible - 2015 |
Términos y frases comunes
alluvium Alps alternate ancient animals aqueous argillaceous augite Auvergne basalt beds bones calcareous called carbonate carboniferous clay cliffs coal 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 mammalia marine marl mass metamorphic mica miles mineral Miocene mountain newer observed occur Old Red Old Red Sandstone Oolite organic remains origin pebbles period plants Pliocene plutonic rocks portion quadrupeds quartz Red Sandstone region reptiles river sand schist scoriæ seen shale shells siliceous Silurian sometimes species stone strata stratified supposed surface tertiary trachyte trap tuff upper valley veins vertical volcanic rocks Wealden white chalk
Pasajes populares
Página 93 - Poets that lasting marble seek Must carve in Latin or in Greek; We write in sand, our language grows, And, like the tide, our work o'erflows.
Página 217 - Kotzebue, stating that the inhabitants of the Radack Archipelago, a group of lagoon islands in the midst of the Pacific, obtained stones for sharpening their instruments by searching the roots of trees which are cast upon the beach.
Página 60 - We often said to ourselves, What clearer evidence could we have had of the different formation of these rocks, and of the long interval . which separated their formation, had we actually seen them emerging from the bosom of the deep ? We felt ourselves necessarily carried back to the time when the schistus on which we stood was yet at the bottom of out.
Página 248 - In some places the upper greensand is in a loose and incoherent state, and there it has been as much denuded as the gault ; as, for example, near Beachy Head ; but farther to the westward it is of great thickness, and contains hard beds of blue chert and calcareous sandstone or firestone. Here, accordingly, we find that it produces a corresponding influence on the scenery of the country ; for it runs out like a step beyond the foot of the chalk-hills, and constitutes a lower terrace, varying in breadth...
Página 135 - Secondly; a gradual submergence then took place, bringing down each part of the land successively to the level of the waters, and then to a moderate depth below them. Large islands and bergs of floating ice came from the north, which, as they grounded on the coast and on shoals, pushed along all loose materials of sand and pebbles, broke off...
Página xxxii - Principles of Geology; or, the Modern Changes of the Earth and its Inhabitants considered as illustrative of Geology. Ninth Edition. Woodcuts. 8vo. 18s. - Manual of Elementary Geology ; or, the Ancient Changes of the Earth and its Inhabitants illustrated by its Geological Monuments.
Página iii - For it is a philosophy which never rests, which has never attained, which is never perfect. Its law is progress. A point which yesterday was invisible is its goal to-day, and will be its starting-post to-morrow.
Página 53 - German geologists, streichen signifying to extend, to have a certain direction. Dip and strike may be aptly illustrated by a row of houses running east and west, the long ridge of the roof representing the strike of the stratum of slates, which dip on one side to the north, and on the other to the south.
Página 280 - ... was quite active. Their limbs and strong claws are admirably adapted for crawling over the rugged and fissured masses of lava which everywhere form the coast. In such situations, a group of six or seven of these hideous reptiles may oftentimes be seen on the black rocks, a few feet above the surf, basking in the sun with outstretched legs.