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 12
... feet in depth . Its structure is simple enough , consisting wholly of loose masses of slaggy This is very well laid down in Desmarest's Map of Auvergne , Paris 1823 . lava , sufficiently decomposed to allow of the growth of 12 On the ...
... feet in depth . Its structure is simple enough , consisting wholly of loose masses of slaggy This is very well laid down in Desmarest's Map of Auvergne , Paris 1823 . lava , sufficiently decomposed to allow of the growth of 12 On the ...
Page 15
... feet . The Puy de Dôme , the hill to which I allude , is of a conical form , and remark able for the distinctness of its outline , rising abruptly from the midst of a sort of amphitheatre of volcanic rocks , which it considerably ...
... feet . The Puy de Dôme , the hill to which I allude , is of a conical form , and remark able for the distinctness of its outline , rising abruptly from the midst of a sort of amphitheatre of volcanic rocks , which it considerably ...
Page 25
... feet above the level of the sea . Though its shape at a distance corresponds more to what we observe in many transition districts , yet it appears to be entirely of volcanic origin , and two distinct classes of rocks , both referable to ...
... feet above the level of the sea . Though its shape at a distance corresponds more to what we observe in many transition districts , yet it appears to be entirely of volcanic origin , and two distinct classes of rocks , both referable to ...
Page 28
... feet , which , from its conical form , and the analogy which the substances composing it bear to the pro- ducts of recent volcanos , seem to be more modern than the surrounding country . This fact however does not affect the question ...
... feet , which , from its conical form , and the analogy which the substances composing it bear to the pro- ducts of recent volcanos , seem to be more modern than the surrounding country . This fact however does not affect the question ...
Page 36
... feet . * It is curious that the same tapering figure which we view with surprise in the Alps , and consider as characteristic of rocks of the most compact texture , should in this instance be found belonging to a stratum consisting of ...
... feet . * It is curious that the same tapering figure which we view with surprise in the Alps , and consider as characteristic of rocks of the most compact texture , should in this instance be found belonging to a stratum consisting of ...
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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.