Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
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Página xviii
... rocks PAGE 193 • 194 99. Curved and cleaved rocks . Coast of Wigtonshire 195 106. Ground - plan of Granite - boss with ring of Contact - Metamorphism 107. Intrusive Sheet 100. Examples of normal Faults IOI . Sections to show the ...
... rocks PAGE 193 • 194 99. Curved and cleaved rocks . Coast of Wigtonshire 195 106. Ground - plan of Granite - boss with ring of Contact - Metamorphism 107. Intrusive Sheet 100. Examples of normal Faults IOI . Sections to show the ...
Página 7
... rocks will be described , on the origin of which they appear to throw light . I have compared the soils and rocks with which geology deals to the records out of which the historian writes the chronicles of a nation . We might vary the ...
... rocks will be described , on the origin of which they appear to throw light . I have compared the soils and rocks with which geology deals to the records out of which the historian writes the chronicles of a nation . We might vary the ...
Página 13
... rocks heated sometimes , as in parts of Africa , up to more than 130 ° Fahr . by a tropical sun , undergo considerable expansion in consequence of this increase of temperature . At night , on the other hand , the rapid radiation quickly ...
... rocks heated sometimes , as in parts of Africa , up to more than 130 ° Fahr . by a tropical sun , undergo considerable expansion in consequence of this increase of temperature . At night , on the other hand , the rapid radiation quickly ...
Página 16
... rock , for it supplies various organic acids ready to be absorbed by percolating rain - water , the power of which to decompose rocks is thereby increased ( p . 24 ) . It is obvious , then , that in answer to the question , What becomes ...
... rock , for it supplies various organic acids ready to be absorbed by percolating rain - water , the power of which to decompose rocks is thereby increased ( p . 24 ) . It is obvious , then , that in answer to the question , What becomes ...
Página 24
... rocks or loose stones which the stream may encounter in its descent . No kind of rock is more liable than limestone to corrosion under such circumstances . Peaty water flowing over it eats it away with comparative rapidity , while those ...
... rocks or loose stones which the stream may encounter in its descent . No kind of rock is more liable than limestone to corrosion under such circumstances . Peaty water flowing over it eats it away with comparative rapidity , while those ...
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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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