Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite ix
... THE CHAPTER VI . VARIOUS STRUCTURES BUILT UP AROUND VOLCANIC VENTS . CHAPTER VII . THE SUCCESSION OF OPERATIONS TAKING PLACE AT VOL- CANIC CENTRES • 151 186 CHAPTER VIII . THE DISTRIBUTION OF VOLCANOES UPON THE SURFACE.
... THE CHAPTER VI . VARIOUS STRUCTURES BUILT UP AROUND VOLCANIC VENTS . CHAPTER VII . THE SUCCESSION OF OPERATIONS TAKING PLACE AT VOL- CANIC CENTRES • 151 186 CHAPTER VIII . THE DISTRIBUTION OF VOLCANOES UPON THE SURFACE.
Seite 2
... centres of volcanic ac- tivity , they are simply the heaps of materials thrown out of these holes , and must therefore be regarded not as the causes but as the consequences of the volcanic action . Neither does this action always take ...
... centres of volcanic ac- tivity , they are simply the heaps of materials thrown out of these holes , and must therefore be regarded not as the causes but as the consequences of the volcanic action . Neither does this action always take ...
Seite 4
... centres , has had to avail himself of the assistance of guides and attendants from among the common people . Among the great writers of antiquity we find several who had so far emancipated their minds from the popular superstitions as ...
... centres , has had to avail himself of the assistance of guides and attendants from among the common people . Among the great writers of antiquity we find several who had so far emancipated their minds from the popular superstitions as ...
Seite 33
... centres which have been known from a remote antiquity , we have records from which we can determine the intervals separating these outbursts and their relative violence . A critical examination of these records leads to the following ...
... centres which have been known from a remote antiquity , we have records from which we can determine the intervals separating these outbursts and their relative violence . A critical examination of these records leads to the following ...
Seite 54
... centres , and thus build up globu- lar masses to which the name of ' sphærulites ' has been given . No. 3 in the Frontispiece illustrates the forma- tion of these sphærulites . Now , a careful study of the microliths or crystal- lites ...
... centres , and thus build up globu- lar masses to which the name of ' sphærulites ' has been given . No. 3 in the Frontispiece illustrates the forma- tion of these sphærulites . Now , a careful study of the microliths or crystal- lites ...
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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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