Class-book of GeologyMacmillan, 1896 - 404 páginas |
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Página vi
... gradually grown into what it now is . With few exceptions , the woodcuts have been drawn and engraved expressly for this volume . Mr. Sharman has kindly made for me most of the drawings of the fossils . The landscape sketches are ...
... gradually grown into what it now is . With few exceptions , the woodcuts have been drawn and engraved expressly for this volume . Mr. Sharman has kindly made for me most of the drawings of the fossils . The landscape sketches are ...
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... gradually changed into a morass . The upper layer of oyster - shells would prove that the ground was then submerged beneath the sea . The present condition of the ground shows that subsequently the sea retired and the locality passed ...
... gradually changed into a morass . The upper layer of oyster - shells would prove that the ground was then submerged beneath the sea . The present condition of the ground shows that subsequently the sea retired and the locality passed ...
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... gradually crack up or peel off . The face of a cliff is thus worn slowly backward , and the prostrate blocks that fall from it are reduced to smaller fragments and finally to dust . Where , as in Europe and the settled parts of North ...
... gradually crack up or peel off . The face of a cliff is thus worn slowly backward , and the prostrate blocks that fall from it are reduced to smaller fragments and finally to dust . Where , as in Europe and the settled parts of North ...
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... gradually disintegrated and removed . ( 4 ) Rain . One further cause of decay may be sought in the re- markable power possessed by Rain of chemically corroding stones . In falling through the atmosphere , rain absorbs the gases of the ...
... gradually disintegrated and removed . ( 4 ) Rain . One further cause of decay may be sought in the re- markable power possessed by Rain of chemically corroding stones . In falling through the atmosphere , rain absorbs the gases of the ...
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... gradually darken the uppermost decom- posed layer . Worms , insects , and larger animals that may dic on the surface , likewise add their mouldering remains to this uppermost deposit . And thus from animals and plants there is furnished ...
... gradually darken the uppermost decom- posed layer . Worms , insects , and larger animals that may dic on the surface , likewise add their mouldering remains to this uppermost deposit . And thus from animals and plants there is furnished ...
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Términos y frases comunes
abundant abundantly accumulated acid Ammonites basin beds bones bottom Brachiopods calcareous calcite Cambrian carbonate of lime Carboniferous Chapter characteristic chiefly clay containing corals Cretaceous crinoids crystalline crystals decay deposits detritus Devonian earth earth's crust Eocene eruptive rocks Europe evidence extinct fauna feet thick felspar fishes fissures formations fossils genera geological history geologist glacier globe gneiss gradually granite gravel ground iron Jurassic kinds known lakes land lava layers limestone living lower marine marls mass materials Mesozoic miles Miocene molten mountains natural North occur Old Red Sandstone organic remains original Palæozoic period Permian plants and animals Pliocene present preserved probably quartz rain regions represented rivers sand schists sea-floor sediment sedimentary rocks shales sheets shells siliceous Silurian slopes soil solid sometimes species stone strata stratified stream structure substance surface terrestrial Tertiary trace Triassic Trilobites upper valley various vegetation vent volcanic