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A Manual of Elementary Geology: Or, The Ancient Changes of the Earth and Its ...
Sir Charles Lyell
Volledige weergave - 1853
A Manual of Elementary Geology: Or, the Ancient Changes of the Earth and Its ...
Charles Sir Lyell
Geen voorbeeld beschikbaar - 2006
alternate ancient animals appear become beds belong bottom calcareous called causes chalk changes character clay cliffs coal common composed consist containing continuous corals covered crystalline denudation deposits described dikes distinct earth England entire Eocene example existing fact feet felspar fish formations fossil fossiliferous fragments freshwater genera Geol geological geologists gneiss granite height hills horizontal island Italy lakes land lava layers less limestone living lower manner marine marl mass matter miles mineral mountain nature nearly observed occur older once Oolite organic origin pass period plants plutonic portion position present quartz recent referred region remains resembling river rocks rounded sand sandstone seen shale shells side Silurian similar sometimes species stone strata structure successive supposed surface tertiary thickness trap upper usually valley veins volcanic whole
Pagina 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.
Pagina 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.
Pagina 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...
Pagina 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...
Pagina 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.
Pagina 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.
Pagina 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.
Pagina 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.