Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página 3
... deposits from which the evidence is derived . The upper layer is that which contains the foundations and rubbish of ... deposit is necessarily the newest , for it could not be laid down until after the accumulation of those below it ...
... deposits from which the evidence is derived . The upper layer is that which contains the foundations and rubbish of ... deposit is necessarily the newest , for it could not be laid down until after the accumulation of those below it ...
Página 6
... deposits of different ages , and can be compared and con- trasted with those of the modern world . To realise how such preservation has been possible , and how far the forms so retained afford an adequate picture of the life of the time ...
... deposits of different ages , and can be compared and con- trasted with those of the modern world . To realise how such preservation has been possible , and how far the forms so retained afford an adequate picture of the life of the time ...
Página 11
... deposits left by the operations of these agents , the scars or other features made by them upon the earth's surface , and all other memorials of geological change . Having learnt how modern deposits are pro- duced , and how they ...
... deposits left by the operations of these agents , the scars or other features made by them upon the earth's surface , and all other memorials of geological change . Having learnt how modern deposits are pro- duced , and how they ...
Página 20
... Deposits of this nature are still gathering now , though their lower portions may be of great antiquity . In the south - east of England , for instance , the brick - earths contain the bones of animals that have long since passed away ...
... Deposits of this nature are still gathering now , though their lower portions may be of great antiquity . In the south - east of England , for instance , the brick - earths contain the bones of animals that have long since passed away ...
Página 24
... deposits it again on the land or carries it out to sea . Rivers are thus at once agents that themselves directly degrade the land , and that sweep the loosened detritus towards the ocean . An acquaintance with each of these kinds of ...
... deposits it again on the land or carries it out to sea . Rivers are thus at once agents that themselves directly degrade the land , and that sweep the loosened detritus towards the ocean . An acquaintance with each of these kinds of ...
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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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