A Description of Active and Extinct Volcanos, of Earthquakes, and of Thermal Springs: With Remarks on the Causes of These Phænomena, the Character of Their Respective Products, and Their Influence on the Past and Present Condition of the GlobeR. & J.E. Taylor, 1848 - 743 ページ |
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active volcanos alluded ancient andesite appear augite Auvergne basalt beds Buch calcareous called canic carbonic acid cause cavity character coast compact composed cone conglomerate consist containing crater crystals deposited district Ditto dykes earth earthquakes ejected elevation emitted eruption Etna existence feet felspar felspathic fissures formation former fragments fumaroles gases Geological geologists granite heat height hills hornblende Humboldt Iceland igneous interior island Journ lake lapilli latter lava leucite lime limestone mass Memoir miles mineral Mont Dor Mount Etna Mount Vultur mountain Naples neighbourhood observed obsidian occur origin period phænomena phænomenon porphyry portion present probably pumice remarkable rise Rocca Monfina scoriæ seems seen side silica soda Solfatara spot stone Strabo strata streams of lava substance sulphur sulphuretted hydrogen summit supposed surface tain temperature tertiary thermal waters tion trachyte trap tuff upheaved valley vapours Vesuvius volcanic action volcanic products volcanic rocks whilst