Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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Seite xiii
... composed of fragmental 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 ) ...
... composed of fragmental 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 ) ...
Seite xiv
... composed of very viscid lava ( Island of Bourbon ) . ( After Bory de St. Vincent ) 46. Another Mamelon in the Island of Bourbon , with a crater at its summit . ( After Bory de St. Vincent ) . PAGE 127 · · 127 47. Cliff - section in the ...
... composed of very viscid lava ( Island of Bourbon ) . ( After Bory de St. Vincent ) 46. Another Mamelon in the Island of Bourbon , with a crater at its summit . ( After Bory de St. Vincent ) . PAGE 127 · · 127 47. Cliff - section in the ...
Seite 41
... composed of almost pure silica . There are certain cases in which travellers have visited volcanic islands where chemical action of this kind has gone on to such an extent , that they have been led to describe the islands as composed ...
... composed of almost pure silica . There are certain cases in which travellers have visited volcanic islands where chemical action of this kind has gone on to such an extent , that they have been led to describe the islands as composed ...
Seite 47
... composed of a number of different silicates the silicates of aluminium , magnesium , cal- cium , iron , potassium , and sodium . The above statements will perhaps be made clearer by the accompanying table from which it will be seen ...
... composed of a number of different silicates the silicates of aluminium , magnesium , cal- cium , iron , potassium , and sodium . The above statements will perhaps be made clearer by the accompanying table from which it will be seen ...
Seite 54
... composed of icy particles . In other cases , again , the crystallites scattered through the glassy portions of lavas unite in radial groups about certain centres , and thus build up globu- lar masses to which the name of ' sphærulites ...
... composed of icy particles . In other cases , again , the crystallites scattered through the glassy portions of lavas unite in radial groups about certain centres , and thus build up globu- lar masses to which the name of ' sphærulites ...
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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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