Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página 5
... surface . Only in so far as he makes himself acquainted with these modern changes , can he hope to follow intelligently and successfully the story of earlier phases in the earth's progress . It will be seen that this truth has already ...
... surface . Only in so far as he makes himself acquainted with these modern changes , can he hope to follow intelligently and successfully the story of earlier phases in the earth's progress . It will be seen that this truth has already ...
Página 6
... surface , -how sea and land have changed places , how rivers have altered their courses , how lakes have been filled up , how valleys have been excavated , how mountains , peaks , and precipices have been carved , how plains have been ...
... surface , -how sea and land have changed places , how rivers have altered their courses , how lakes have been filled up , how valleys have been excavated , how mountains , peaks , and precipices have been carved , how plains have been ...
Página 7
... surface , we should necessarily gain a most imperfect view of the general history of the Earth . Beneath that surface , as volcanoes show , there lies a hot interior , which must have pro- foundly influenced the changes of the outer ...
... surface , we should necessarily gain a most imperfect view of the general history of the Earth . Beneath that surface , as volcanoes show , there lies a hot interior , which must have pro- foundly influenced the changes of the outer ...
Página 10
... SURFACE IN the history of mankind no sharp line can be drawn between the events that are happening now or have happened within the last few generations , and those that took place long ago , and which are sometimes , though inaccurately ...
... SURFACE IN the history of mankind no sharp line can be drawn between the events that are happening now or have happened within the last few generations , and those that took place long ago , and which are sometimes , though inaccurately ...
Página 11
... surface . Every day and hour witness the enacting of some geological event , trifling and transient or stupendous and durable . Sometimes the event leaves behind it only an imperceptible trace of its passage , at other times it graves ...
... surface . Every day and hour witness the enacting of some geological event , trifling and transient or stupendous and durable . Sometimes the event leaves behind it only an imperceptible trace of its passage , at other times it graves ...
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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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