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Updated: June 20, 2025
When discussing the ages of the Plutonic rocks, we have seen that examples occur of various primary, secondary, and tertiary deposits converted into metamorphic strata near their contact with granite.
Then without further ado Siegfried departs on his expedition, taking Gunther with him to the foot of the mountain, and leaving Hagen to guard the hall and sing a very fine solo which has often figured in the programs of the Richter concerts, explaining that his interest in the affair is that Siegfried will bring back the Ring, and that he, Hagen, will presently contrive to possess himself of that Ring and become Plutonic master of the world.
Aqueous, Plutonic, volcanic, and metamorphic Rocks considered chronologically. Terms Primary, Secondary, and Tertiary; Palaeozoic, Mesozoic, and Cainozoic explained. On the different Ages of the aqueous Rocks. Three principal Tests of relative Age: Superposition, Mineral Character, and Fossils. Change of Mineral Character and Fossils in the same continuous Formation.
Hutton, or the plutonic theory of geology, and having been exceedingly struck both by its simplicity and beauty, its harmony with existing facts, and the proofs afforded to it by some beautiful chemical experiments, I do not feel disposed immediately to renounce it for the views which I have just heard explained; for the principal facts which our new acquaintance has stated are, I think, not inconsistent with the refined philosophical systems of Professor Playfair and Sir James Hall.
R. B. N. Walker, 1873, was found to bear a lake upon the summit which, in plutonic formations, would suggest an extinct crater. East of the Yalimbongo they came upon the Apingis, whom M. du Chaillu, after two visits, also placed upon the southern fork of the Ogobe.
Geology defined. Successive Formation of the Earth's Crust. Classification of Rocks according to their Origin and Age. Aqueous Rocks. Their Stratification and imbedded Fossils. Volcanic Rocks, with and without Cones and Craters. Plutonic Rocks, and their Relation to the Volcanic. Metamorphic Rocks, and their probable Origin.
I expected a corresponding formation upon the opposite eastern versant: we found only a huge crest, a spine of black plutonic rock, intensely ugly and repulsive. As we rode back down the "Valley of the Perpendiculars," the aspect of the Jebel el-Maru was epatant to use another favourite camp-word.
Also, he learned that Gluck had just sailed on the Green Star liner Plutonic for the United States. The case was complete in Bannerman's mind, though in the interval of waiting he worked up the details. In this he was ably assisted by George Brown, an operator employed by the Wood's System of Wireless Telegraphy.
Its basin was mined by subterranean fires that were always seeking extraordinary outlets through Vesuvius and Aetna and breathed continually through the mouth of Stromboli. Sometimes these Plutonic ebullitions would come to the surface, making new islands rise up upon the waters like tumors of lava.
"But in the lapse of ten thousand changing centuries, the lower deeps, acted on by some Plutonic agency, began to grow shallow; and the imprisoned tides began to foam and roar as they struggled to follow the moon, their leader, angry to find that the stillness of their ancient domain was year by year invaded by the ever-rising land.
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