Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página xv
... Sand - dunes 7. Erosion of limestone by the solvent action of a peaty stream , Dur- ness , Sutherlandshire . 8. Pot - holes worn out by the gyration of stones in the bed of a stream 9. Grand Cañon of the Colorado 10. Gullies torn out of ...
... Sand - dunes 7. Erosion of limestone by the solvent action of a peaty stream , Dur- ness , Sutherlandshire . 8. Pot - holes worn out by the gyration of stones in the bed of a stream 9. Grand Cañon of the Colorado 10. Gullies torn out of ...
Página 1
... , and spreading over fields and meadows , will bury many acres of fertile land under a covering of barren sand and shingle . A long - continued , heavy rain , by loosening masses A of earth or rock on steep slopes , causes 20 B.
... , and spreading over fields and meadows , will bury many acres of fertile land under a covering of barren sand and shingle . A long - continued , heavy rain , by loosening masses A of earth or rock on steep slopes , causes 20 B.
Página 4
... sand and gravel , full of smooth well - rounded stones . .Such materials are to be seen in the course of formation where water keeps them moving to and fro , as on the beds of rivers , the margins of lakes , or the shores of the sea ...
... sand and gravel , full of smooth well - rounded stones . .Such materials are to be seen in the course of formation where water keeps them moving to and fro , as on the beds of rivers , the margins of lakes , or the shores of the sea ...
Página 13
... sand and earth are separated from each other by the ice that shoots between them . They are all frozen into a solid mass that rings like stone under our feet ; but , as soon as a thaw sets in , the ice that formed the binding cement ...
... sand and earth are separated from each other by the ice that shoots between them . They are all frozen into a solid mass that rings like stone under our feet ; but , as soon as a thaw sets in , the ice that formed the binding cement ...
Página 14
... sand . Everywhere the weather- eaten surfaces , the crumbling crust of decayed stone , and the scattered blocks and trains of rubbish , tell their tale of universal waste . It is well to take numerous opportunities of observing the pro ...
... sand . Everywhere the weather- eaten surfaces , the crumbling crust of decayed stone , and the scattered blocks and trains of rubbish , tell their tale of universal waste . It is well to take numerous opportunities of observing the pro ...
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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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