Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página 56
... animals which have long been extinct . The solvent action of underground water has thus been of the utmost service in geological history , first , in forming caverns that could be used as 56 CHAP . RECORDS LEFT BY SPRINGS.
... animals which have long been extinct . The solvent action of underground water has thus been of the utmost service in geological history , first , in forming caverns that could be used as 56 CHAP . RECORDS LEFT BY SPRINGS.
Página 83
... extinct since before the beginning of the authentic history of the country . Mangrove - swamps . - Along the flat shores of tropical lands , the mangrove trees grow out into the salt water , forming a belt of jungle which runs up or ...
... extinct since before the beginning of the authentic history of the country . Mangrove - swamps . - Along the flat shores of tropical lands , the mangrove trees grow out into the salt water , forming a belt of jungle which runs up or ...
Página 96
... extinct vol- canic action . The earthquakes and tremors that accompany volcanic outbursts , the constant and prodigious out - rushing of steam , the abundant discharge of gases and acid vapours , though singularly impressive at the time ...
... extinct vol- canic action . The earthquakes and tremors that accompany volcanic outbursts , the constant and prodigious out - rushing of steam , the abundant discharge of gases and acid vapours , though singularly impressive at the time ...
Página 104
... extinct , this lava column would cool and solidify , and even after the entire destruction and removal of the cone and crater , would remain as a stump to tell where the site of the volcano had been . Layer after layer might be stripped ...
... extinct , this lava column would cool and solidify , and even after the entire destruction and removal of the cone and crater , would remain as a stump to tell where the site of the volcano had been . Layer after layer might be stripped ...
Página 105
... extinct , still retains its cone of erupted materials , we cannot , of course , learn much regarding the shape and size of the funnel , for only the crater , and at most merely the upper part of the vent , are accessible . But among ...
... extinct , still retains its cone of erupted materials , we cannot , of course , learn much regarding the shape and size of the funnel , for only the crater , and at most merely the upper part of the vent , are accessible . But among ...
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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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