A Manual of Elementary Geology: Or, The Ancient Changes of the Earth and Its Inhabitants, as Illustrated by Geological MonumentsMurray, 1851 - 512 Seiten |
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alluded alluvium Alps ancient animals aqueous argillaceous Auvergne basin beds belong bones bottom boulders breccia calcareous called carbonate of lime chalk CHAPTER clay cliffs coast consist containing corals crag cretaceous crystalline denudation deposits depth drift earth England Eocene Europe extinct faluns fauna feet thick flint fluviatile formations formed fossil fossil shells fossiliferous fragments freshwater genera genus Geol geologists Geology glaciers gneiss granite gravel greensand groups height hills horizontal hyæna imbedded inhabiting lakes land lava layers limestone living loess London clay lower mammalia marine shells marl mass matter metamorphic metamorphic rocks miles mineral character Miocene mountains newer observed occur ocean Oolite organic remains origin pebbles period Pliocene plutonic portion quadrupeds recent species red sandstone region rivers rocks sand sediment seen siliceous Silurian solid sometimes stone strata stratified surface tertiary testacea upper valley vertical volcanic Wealden white chalk zoophytes
Beliebte Passagen
Seite 67 - 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.
Seite 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.
Seite 34 - 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.
Seite 222 - 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 from a quarter of a mile to three miles, and following the sinuosities of the chalk escarpment.* Fig.
Seite 109 - 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...
Seite xvi - 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.
Seite 208 - The regular and uniform preservation of this thin bed of black earth over a distance of many miles, shows that the change from dry land to the state of a freshwater lake or estuary, was not accompanied by any violent denudation, or rush of water, since the loose black earth, together with the trees which lay prostrate on its surface, must inevitably have been swept away had any such violent catastrophe then taken place.
Seite 27 - ... the direction of the strata. Thus, in the above instance of strata dipping to the north, their strike must necessarily be east and west. We have borrowed the word from the 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.
Seite 34 - An epoch still more remote presented itself, when even the most ancient of these rocks, instead of standing upright in vertical beds, lay in horizontal planes at the bottom of the sea, and was not yet disturbed by that immeasurable force which has burst asunder the solid pavement of the globe. Revolutions still more remote appeared in the distance of this extraordinary perspective. The mind seemed to grow giddy by looking so far into the abyss of...