Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite x
... SURFACE OF THE GLOBE CHAPTER IX . VOLCANIC ACTION AT DIFFERENT PERIODS OF THE EARTH'S HISTORY · CHAPTER X. THE PART PLAYED BY VOLCANOES IN THE ECONOMY OF NATURE · CHAPTER XI . WHAT VOLCANOES TEACH US CONCERNING THE NATURE OF THE EARTH'S ...
... SURFACE OF THE GLOBE CHAPTER IX . VOLCANIC ACTION AT DIFFERENT PERIODS OF THE EARTH'S HISTORY · CHAPTER X. THE PART PLAYED BY VOLCANOES IN THE ECONOMY OF NATURE · CHAPTER XI . WHAT VOLCANOES TEACH US CONCERNING THE NATURE OF THE EARTH'S ...
Seite 2
... earth's crust , or outer portion , by means of which a communication is kept up between the surface and the interior of our globe . When mountains do exist at centres of volcanic ac- tivity , they are simply the heaps of materials ...
... earth's crust , or outer portion , by means of which a communication is kept up between the surface and the interior of our globe . When mountains do exist at centres of volcanic ac- tivity , they are simply the heaps of materials ...
Seite 17
... surface of the earth ; secondly , the presence of matter in a highly heated condition beneath the surface ; and thirdly , the existence of great quantities of water imprisoned in the subterranean regions - which water , escaping as ...
... surface of the earth ; secondly , the presence of matter in a highly heated condition beneath the surface ; and thirdly , the existence of great quantities of water imprisoned in the subterranean regions - which water , escaping as ...
Seite 22
... earth's surface , and under the pressure of many hundreds or thousands of feet of solid rock , water still retaining its liquid condition may become intensely heated . When the pressure is relieved by the forma- tion of a crack or ...
... earth's surface , and under the pressure of many hundreds or thousands of feet of solid rock , water still retaining its liquid condition may become intensely heated . When the pressure is relieved by the forma- tion of a crack or ...
Seite 27
... earth's surface , the escape of steam with ex- plosive violence from these openings , often propelling rock - fragments into the atmosphere , and the out - well- ing , under the influence of this compressed steam , of masses of molten ...
... earth's surface , the escape of steam with ex- plosive violence from these openings , often propelling rock - fragments into the atmosphere , and the out - well- ing , under the influence of this compressed steam , of masses of molten ...
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Häufige Begriffe und Wortgruppen
active volcanoes andesites appear atmosphere augite Auvergne basaltic basic lavas canic carbonic acid cavities centre character Cheaper Edition chemical Cloth composed composition condition crater crater-rings crystalline crystals Demy 8vo denuding forces depth dykes earth's crust earth's surface enormous eruption Etna exhibit exist fact Fcap feet formation formed fragments Frontispiece gases geological periods geologists glassy globe granitic igneous Illustrations incandescent interior Island lapilli Large post 8vo lava-currents lava-streams line of fissure Lipari liquid mass melaphyres metallic meteorites microliths miles minerals Monte Nuovo ocean origin parasitic cones Poems portions present pressure price 35 produced pumice quantities rhyolites rock-masses scoria-cones scoriæ Second Edition seen sides silica slope Small crown 8vo solid steam Stromboli structure substances subterranean summit take place temperature Third Edition tion trachytic tuffs vapour vast Vesuvius volcanic action volcanic cones volcanic districts volcanic forces volcanic mountains volcanic outbursts volcanic phenomena volcanic vents vols
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