Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página 3
... bottom lies the layer that preserves the scanty traces of the early flint - folk . The upper deposit is necessarily the newest , for it could not be laid down until after the accumulation of those below it , which must , of course , be ...
... bottom lies the layer that preserves the scanty traces of the early flint - folk . The upper deposit is necessarily the newest , for it could not be laid down until after the accumulation of those below it , which must , of course , be ...
Página 4
... bottoms of many lakes at the present time ( compare Fig . 30 ) . These three layers — oyster- bed , peat , and ... bottom layer of white marl with its peculiar shells would show that at one time the place was occupied by a lake ...
... bottoms of many lakes at the present time ( compare Fig . 30 ) . These three layers — oyster- bed , peat , and ... bottom layer of white marl with its peculiar shells would show that at one time the place was occupied by a lake ...
Página 6
... bottoms , from the depths of peat - mosses , from the floors of subterranean caverns , from the incrustations left by springs , we might recover traces of some at least of the living things that people the land . And from these ...
... bottoms , from the depths of peat - mosses , from the floors of subterranean caverns , from the incrustations left by springs , we might recover traces of some at least of the living things that people the land . And from these ...
Página 16
... bottom lies the rock , either undecayed or at least still fresh enough to show its true nature . Next comes the broken - up crumbling layer through which stray roots descend , and which is known as the subsoil . At the top lies the dark ...
... bottom lies the rock , either undecayed or at least still fresh enough to show its true nature . Next comes the broken - up crumbling layer through which stray roots descend , and which is known as the subsoil . At the top lies the dark ...
Página 26
... bottom of the sea , it is evident that if there be no compensating influences at work to repair the constant loss , the land must in the end be all worn away . Some of the most instructive lessons regarding the work of running water on ...
... bottom of the sea , it is evident that if there be no compensating influences at work to repair the constant loss , the land must in the end be all worn away . Some of the most instructive lessons regarding the work of running water on ...
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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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