Class-book of GeologyMacmillan and Company, 1886 - 516 páginas |
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Página 10
... solid framework of the land . This then will be the next subject for consideration . But in a great historical edifice , like one of the minsters of Europe , for example , there are often several different styles . A student of ...
... solid framework of the land . This then will be the next subject for consideration . But in a great historical edifice , like one of the minsters of Europe , for example , there are often several different styles . A student of ...
Página 18
... solid mass that rings like stone under our feet ; but , as soon as a thaw sets in , the ice that formed the binding cement passes into water which converts the soil into soft earth or mud . This process , repeated winter after winter ...
... solid mass that rings like stone under our feet ; but , as soon as a thaw sets in , the ice that formed the binding cement passes into water which converts the soil into soft earth or mud . This process , repeated winter after winter ...
Página 20
... solid sandstone ( a ) under- neath up into broken - up sandstone ( b ) , and thence into the earthy layer ( c ) that supports the vegetation of the surface . Traced from below up- wards , the rock is found to become more and more broken ...
... solid sandstone ( a ) under- neath up into broken - up sandstone ( b ) , and thence into the earthy layer ( c ) that supports the vegetation of the surface . Traced from below up- wards , the rock is found to become more and more broken ...
Página 21
... solid granite can be recognised running through the decayed and fresh parts alike . But besides being broken into pieces , the granite rots away and loses its cohesion . Some of the smaller pieces can be crumbled down between the ...
... solid granite can be recognised running through the decayed and fresh parts alike . But besides being broken into pieces , the granite rots away and loses its cohesion . Some of the smaller pieces can be crumbled down between the ...
Página 23
... solid rock below . Influences are at work also , whereby there is an imperceptible removal of material from the surface of the soil . Notable among these influences are rain , wind , and earth - worms . Wherever soil is bare of ...
... solid rock below . Influences are at work also , whereby there is an imperceptible removal of material from the surface of the soil . Notable among these influences are rain , wind , and earth - worms . Wherever soil is bare of ...
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Términos y frases comunes
abundant accumulated acid augite basin beds bones bottom Brachiopods calcareous calcite carbonate of lime Carboniferous chapter characteristic chiefly clay containing corals Cretaceous crinoids crystalline crystals cycads decay deposits detritus Devonian earth earth's crust Eocene Europe evidence example extinct fauna feet thick fishes fissures fossils genera geological history geologist glacier globe gradually granite gravel ground iron Jurassic kinds known lakes land lava layers limestone living lower marine marked marls masses materials Mesozoic miles mineral matter Miocene molten mountains natural North occur Old Red Sandstone organic remains original Paleozoic period Permian plants and animals Pliocene present preserved probably quartz rain records regions rivers salt 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 tion trace Triassic upper valley various vegetation veins vent volcanic