Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite 40
... exhibit marked volatility are nevertheless easily carried away in fine particles when a current of steam is passed over them . As we shall have to point out in the sequel , different volatile substances have a tendency to make their ap ...
... exhibit marked volatility are nevertheless easily carried away in fine particles when a current of steam is passed over them . As we shall have to point out in the sequel , different volatile substances have a tendency to make their ap ...
Seite 59
... exhibit many interesting points of difference from those which separate out in the midst of a mass of the same rock , when it has been artificially melted and slowly cooled . There are other facts which also point to the conclusion that ...
... exhibit many interesting points of difference from those which separate out in the midst of a mass of the same rock , when it has been artificially melted and slowly cooled . There are other facts which also point to the conclusion that ...
Seite 60
... exhibit evidence of having been slowly built up in the midst of a glassy mass , containing crystallites and small crystals . We can frequently detect evidence of the interruptions which have occurred in the growth of these crystals in ...
... exhibit evidence of having been slowly built up in the midst of a glassy mass , containing crystallites and small crystals . We can frequently detect evidence of the interruptions which have occurred in the growth of these crystals in ...
Seite 64
... exhibit clear CAUSE OF MOVEMENT OF BUBBLES . 65 evidence of having. FIG . 9. - CAVITY IN CRYSTAL CONTAINING CARBONIC - ACID GAS AT A TEMPERATURE OF 86 ° F. , AND PASSING FROM THE LIQUID TO THE FIG . 10. - MONTE NUOVO ( 440 FT . 64 ...
... exhibit clear CAUSE OF MOVEMENT OF BUBBLES . 65 evidence of having. FIG . 9. - CAVITY IN CRYSTAL CONTAINING CARBONIC - ACID GAS AT A TEMPERATURE OF 86 ° F. , AND PASSING FROM THE LIQUID TO THE FIG . 10. - MONTE NUOVO ( 440 FT . 64 ...
Seite 94
... exhibit abundant evidence , in their liquid cavities and other peculiarities , that they have not been formed by simple cooling from a state of fusion , but under the combined action of heat , the presence of water and various gases ...
... exhibit abundant evidence , in their liquid cavities and other peculiarities , that they have not been formed by simple cooling from a state of fusion , but under the combined action of heat , the presence of water and various gases ...
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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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