Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página 1
... appear to stand , and so strong a contrast do they offer to the shortness and changeableness of human life , that they have become typical in our minds of all that is ancient and durable . We speak of the firm earth , of the everlasting ...
... appear to stand , and so strong a contrast do they offer to the shortness and changeableness of human life , that they have become typical in our minds of all that is ancient and durable . We speak of the firm earth , of the everlasting ...
Página 7
... appear to throw light . I have compared the soils and rocks with which geology deals to the records out of which the historian writes the chronicles of a nation . We might vary the simile by likening them to the materials employed in ...
... appear to throw light . I have compared the soils and rocks with which geology deals to the records out of which the historian writes the chronicles of a nation . We might vary the simile by likening them to the materials employed in ...
Página 18
... appears to be a permanent protection , it does not really prevent a large amount of material from being removed even from grassy ground . It forms the record of the slow and almost imperceptible geological changes that affect the ...
... appears to be a permanent protection , it does not really prevent a large amount of material from being removed even from grassy ground . It forms the record of the slow and almost imperceptible geological changes that affect the ...
Página 22
... appear to be securely protected by a covering of vegetation , the common earth- worm brings the finer parts of them up to the surface , where they come within reach of rain and wind , so that on tracts permanently grassed over , there ...
... appear to be securely protected by a covering of vegetation , the common earth- worm brings the finer parts of them up to the surface , where they come within reach of rain and wind , so that on tracts permanently grassed over , there ...
Página 23
... appears , then , that from various causes all over the globe , there is a continual decay of the surface of the land ; that the decom- posed material partly accumulates as soil , subsoil , and sheets or heaps of loose earth or sand ...
... appears , then , that from various causes all over the globe , there is a continual decay of the surface of the land ; that the decom- posed material partly accumulates as soil , subsoil , and sheets or heaps of loose earth or sand ...
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Términos y frases comunes
abundant accumulated acid Ammonites ancient Assistant Master beds BOOK bottom Brachiopods calcareous calcite Cambrian Cambridge carbonate of lime Carboniferous Chapter chiefly clay College containing corals Cretaceous crinoids crystalline crystals decay deposits detritus Devonian earth earth's crust Edited ELEMENTARY Eocene eruptive Europe evidence example extinct fauna Fcap feet fissures fossils genera GEOGRAPHY geological history glacier globe gradually granite gravel GREEK ground Illustrated Jurassic kinds known lakes land lava layers limestone living lower marine marls mass materials Mesozoic mineral Miocene mountains natural occur Old Red Sandstone organic remains original Palæozoic Paleozoic period Permian plants and animals Pliocene present preserved Prof Professor quartz Red Sandstone regions revised rivers rocks sand schists sediment sedimentary sedimentary rocks shales sheets shells siliceous Silurian soil solid sometimes species stone strata structure substance surface terrestrial Tertiary thick trace Triassic upper various vegetation volcanic
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