A Description of Active and Extinct Volcanos: With Remarks on Their Origin, Their Chemical Phaenomena, and the Character of Their Products, as Determined by the Condition of the Earth During the Period of Their Formation. Being the Substance of Some Lectures Delivered Before the University of Oxford, with Much Additional Matter |
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Page ix
... thrown on the nature of Trap and Basaltic Districts , than by the labours of Dr. Macculloch and of other English Geologists ; to some of whom I feel personally indebted , either for much of the information which forms the ground work of ...
... thrown on the nature of Trap and Basaltic Districts , than by the labours of Dr. Macculloch and of other English Geologists ; to some of whom I feel personally indebted , either for much of the information which forms the ground work of ...
Page 12
... thrown across them , the projecting por- tions of which appear like islands in the midst . The stream of lava that has occasioned this impediment appears to have been furnished by one of three mountains , all of which have given out ...
... thrown across them , the projecting por- tions of which appear like islands in the midst . The stream of lava that has occasioned this impediment appears to have been furnished by one of three mountains , all of which have given out ...
Page 18
... thrown up from a great depth by the same agent to which they owe their mineralogical characters . Again it may be asked , whether admitting the latter view of the case to be the correct one , we are to suppose each of the domite hills ...
... thrown up from a great depth by the same agent to which they owe their mineralogical characters . Again it may be asked , whether admitting the latter view of the case to be the correct one , we are to suppose each of the domite hills ...
Page 19
... of hornblende rock , by supposing that it formed beds in the granite which was thrown up , whilst the unequal operation of heat may explain the occurrence of the latter substance B 2 On the Post - diluvial Volcanic Rocks near Clermont . 19.
... of hornblende rock , by supposing that it formed beds in the granite which was thrown up , whilst the unequal operation of heat may explain the occurrence of the latter substance B 2 On the Post - diluvial Volcanic Rocks near Clermont . 19.
Page 28
... thrown out since the existence of the present order of things , would have been found at the bottom of the vallies by which the country is intersected . 2. The trachytic formation is essentially composed of crystals of glassy felspar ...
... thrown out since the existence of the present order of things , would have been found at the bottom of the vallies by which the country is intersected . 2. The trachytic formation is essentially composed of crystals of glassy felspar ...
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Common terms and phrases
alluded analogy antient appear augite Auvergne basalt beds Breislac Buch calcareous carbonic acid cause cavities cellular characters colour compact composed cones conglomerate consider consist contains covered crater deposited dykes earth earthquakes ejected eruption Etna exhalations existence feet felspar fire formation formed former fragments glassy felspar granite heat hills hornblende Humboldt Hungary igneous island lake latter lava leucite likewise limestone Lipari Macaluba mass Memoir mica midst miles minerals Monte Mount Mount Etna Mount Vultur mountain muriatic Naples nature neighbourhood noticed observed obsidian occur origin period phænomenon Phlegrean fields pitchstone porphyry portion present probably pumice remark respect rise scoriæ scoriform seems seen shew shewn Sicily side Solfatara spot stone Strabo strata stream of lava structure substance sulphur sulphuretted hydrogen summit supposed surface tain tertiary thrown tion trachyte tuff valley vapours Vesuvius vitreous volcanic action volcanic matter volcanic products volcanic rocks whilst δε
Popular passages
Page 279 - Behold, I am against thee, O destroying mountain, saith the Lord, which destroyest all the earth: and I will stretch out mine hand upon thee, and roll thee down from the rocks, and will make thee a burnt mountain.
Page 279 - And Abraham gat up early in the morning to the place where he stood before the LORD : and he looked toward Sodom and Gomorrah, and toward all the land of the plain, and beheld, and, lo, the smoke of the country went up as the smoke of a furnace.
Page 325 - The bottom was covered with lava, and the south-west and northern parts of it were one vast flood of burning matter, in a state of terrific ebullition, rolling to and fro its " fiery surge
Page 326 - It was evident, that the large crater had been recently filled with liquid lava up to this black ledge, and had, by some subterranean canal, emptied itself into the sea, or upon the low land on the shore.
Page 278 - Oh that thou wouldest rend the heavens, that thou wouldest come down, that the mountains might flow down at thy presence. As when the melting fire burneth, the fire causeth the waters to boil, to make thy name known to thine adversaries, that the nations may tremble at thy presence...
Page 325 - ... and flaming billows. Fifty-one conical islands, of varied form and size, containing so many craters, rose either round the edge or from the surface of the burning lake. Twentytwo constantly emitted columns of grey smoke, or pyramids of brilliant flame ; and several of these at the same time vomited from their ignited mouths streams of lava, which rolled in blazing torrents down their black indented sides into the boiling mass below.
Page 317 - ... the mountain began to give way, and the greatest part of it actually fell in,, and disappeared in the earth. At the same time a tremendous noise was heard, resembling the discharge of the heaviest cannon. Immense...
Page 278 - Who can stand before His indignation? and who can abide in the fierceness of His anger? His fury is poured out like fire, and the rocks are thrown down by Him.
Page 191 - Wheb a shock is felt, when the earth is shaken on it-s old foundations, which we had deemed so stable, one instant is sufficient to destroy long illusions. It is like awakening from a dream; but a painful awakening.
Page 338 - September every thing seemed to announce the complete re-establishment of tranquillity, when in the night between the 28th and '29th the horrible subterraneous noise recommenced. The affrighted Indians fled to the mountains of Aguasarco. A tract of ground from three to four square miles in extent, which goes by the name of Malpays, rose up in the shape of a bladder.