Volcanoes: What They are and what They TeachC. K. Paul, 1881 - 381 Seiten |
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... with Sphærulites . 4. Rock with Cryptocrystalline Base . 5. Rock with Microcrystalline Base . 6. Rock of Granitic Structure built up entirely of Crystals . [ See pp . 53-58 . VOLCANOES 、,, " VOLCANOES WHAT THEY ARE AND WHAT THEY.
... with Sphærulites . 4. Rock with Cryptocrystalline Base . 5. Rock with Microcrystalline Base . 6. Rock of Granitic Structure built up entirely of Crystals . [ See pp . 53-58 . VOLCANOES 、,, " VOLCANOES WHAT THEY ARE AND WHAT THEY.
Seite vii
... the liquids enclosed in the crystals of igneous rocks ; the relations of minerals occurring in some volcanic products to those found in meteorites ; the nature and origin of the remarkable iron - masses found at Ovifak in Green.
... the liquids enclosed in the crystals of igneous rocks ; the relations of minerals occurring in some volcanic products to those found in meteorites ; the nature and origin of the remarkable iron - masses found at Ovifak in Green.
Seite xi
... crystals of rocks . ( After Zirkel ) . • 43 • to face p . 60 62 8. Minute liquid - cavity in a crystal , with a moving bubble . ( After Hartley ) · • 9. Cavity in crystal , containing carbonic - acid gas at a tempe- rature of 86 ° F ...
... crystals of rocks . ( After Zirkel ) . • 43 • to face p . 60 62 8. Minute liquid - cavity in a crystal , with a moving bubble . ( After Hartley ) · • 9. Cavity in crystal , containing carbonic - acid gas at a tempe- rature of 86 ° F ...
Seite 47
... crystal and flint . Silica is present in all lavas in proportions which vary from one - half to four - fifths of the whole mass . Now , this substance , silica , has the property of forming more complex compounds by uniting with the ...
... crystal and flint . Silica is present in all lavas in proportions which vary from one - half to four - fifths of the whole mass . Now , this substance , silica , has the property of forming more complex compounds by uniting with the ...
Seite 51
... crystals ; in some cases these crystals are so small as to be scarcely visible to the naked eye , in others they may be an inch or more in length . Most lavas are thus seen to be largely made up of crystals of different minerals . The ...
... crystals ; in some cases these crystals are so small as to be scarcely visible to the naked eye , in others they may be an inch or more in length . Most lavas are thus seen to be largely made up of crystals of different minerals . 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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