Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite xiii
... materials 38. Natural section of a tuff - cone , forming the Cape of Misenum , and exhibiting the peculiar internal arrange- ment , characteristic of volcanoes composed of frag- mentary materials . ( After Scrope ) . 120 39. Section of ...
... materials 38. Natural section of a tuff - cone , forming the Cape of Misenum , and exhibiting the peculiar internal arrange- ment , characteristic of volcanoes composed of frag- mentary materials . ( After Scrope ) . 120 39. Section of ...
Seite 2
... materials thrown out of these holes , and must therefore be regarded not as the causes but as the consequences of ... material reflected from these vapour clouds . It is not difficult to understand how these false notions on the subject ...
... materials thrown out of these holes , and must therefore be regarded not as the causes but as the consequences of ... material reflected from these vapour clouds . It is not difficult to understand how these false notions on the subject ...
Seite 12
... materials at some points , and left the hard , slaggy masses standing up prominently at others . This great heap of cindery and slaggy materials rises , as we have said , to a height of more than 3,000 feet above the sea - level , but ...
... materials at some points , and left the hard , slaggy masses standing up prominently at others . This great heap of cindery and slaggy materials rises , as we have said , to a height of more than 3,000 feet above the sea - level , but ...
Seite 21
... materials at a higher temperature , containing water entangled in its mass . As this water passes into the state of steam it tends to escape , and in so doing puts the whole mass into violent movement . When the steam rises to the ...
... materials at a higher temperature , containing water entangled in its mass . As this water passes into the state of steam it tends to escape , and in so doing puts the whole mass into violent movement . When the steam rises to the ...
Seite 42
... materials ejected by volcanoes . Spectroscopic obser- vations of this kind have already been commenced by Janssen , at Stromboli and Santorin . Some of the volatile substances issuing from volcanic vents , are at once deposited when ...
... materials ejected by volcanoes . Spectroscopic obser- vations of this kind have already been commenced by Janssen , at Stromboli and Santorin . Some of the volatile substances issuing from volcanic vents , are at once deposited when ...
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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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