Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite 12
... depth of nearly 600 fathoms , so that Stromboli is a great conical mass of cinders and slaggy materials , having a height of over 6,000 feet , and a base whose diameter exceeds four miles . The general form and proportions of this mass ...
... depth of nearly 600 fathoms , so that Stromboli is a great conical mass of cinders and slaggy materials , having a height of over 6,000 feet , and a base whose diameter exceeds four miles . The general form and proportions of this mass ...
Seite 22
... depths beneath the 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 ...
... depths beneath the 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 ...
Seite 57
... ( a ' crypto - crystalline base ' ) , through which distinct crystals are distributed . Nos . 5 and 6 illustrate the characters presented by lavas which have consoli- dated at considerable depths beneath the surface ; in the.
... ( a ' crypto - crystalline base ' ) , through which distinct crystals are distributed . Nos . 5 and 6 illustrate the characters presented by lavas which have consoli- dated at considerable depths beneath the surface ; in the.
Seite 58
What They are and what They Teach John Wesley Judd. dated at considerable depths beneath the surface ; in the former we ... depths . The names of these two con- ditions of the five great classes into which we have divided lavas are as ...
What They are and what They Teach John Wesley Judd. dated at considerable depths beneath the surface ; in the former we ... depths . The names of these two con- ditions of the five great classes into which we have divided lavas are as ...
Seite 78
... depth that its bottom is but little above the sea - level . This cup - shaped depression is the crater ' of the volcano , and it has evidently been formed by the explosive action which has thrown out the materials immediately above the ...
... depth that its bottom is but little above the sea - level . This cup - shaped depression is the crater ' of the volcano , and it has evidently been formed by the explosive action which has thrown out the materials immediately above the ...
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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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