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The views of Mr. R. Mallet, briefly stated, are somewhat as follows: Owing to the secular cooling of the earth, and the consequent lateral crushing of the surface, this crushing from time to time overcomes the resistance; in which case shocks are experienced along the lines of fracture and faulting by which the crust is intersected.
In brief, it is that, during a process of " faulting," the north wall was thrust up above the level of the south wall. Features above Bright Angel Creek. In any other region but here, this Bright Angel Gorge and the massive figures of rock that sentinel and guard it would be regarded as a scenic marvel, but here it is a mere trivial incident in the greater scenery of the greater Canyon.
You mean I never saw those white women, uncle Phaeton?" "No, no, I am not so seriously faulting your eyesight, my dear boy," came the swift assurance. "But even the best of us are open to errors, and there were in olden times not a few Aztecs with fair skins; not exactly white, yet comparatively fair when their race was considered. And, no doubt, Waldo, you saw just such another a bit ago."
In Phocylides, probably through "faulting," one portion of the interior suddenly sinks to a considerable depth below the remainder; while the very abnormal Wargentin has such an elevated floor, that, when viewed under favourable conditions, it reminds one of a shallow oval tray or dish filled with fluid to the point of overflowing.
Where, however, the beds have been subjected to mountain-building, and have been thrown into very varied attitudes by folding and faulting, the stream now here and now there encounters beds which either restrain its flow or give it freedom. The stream is then forced to cut its way according to the positions of the various underlying strata.
The third woman to be examined by the bishop was a widow of sixty, who had not been numbered among the original seventeen witches. She acknowledged that she was a witch, but was, wrote the bishop, "more often faulting in the particulars of her actions as one having a strong imagination of the former, but of too weak a memory to retain or relate the latter."
Leaving El Tovar promptly at 8:30 A. M., fortified with a good breakfast, and suitably clothed, the trail party in a few minutes reaches the head of Bright Angel Trail near Bright Angel Camp. For three-quarters of a mile this trail descends, zigzagging back and forth until the top of the cross-bedded sandstone is reached. Faulting in the Sandstones.
I suggest that an uneven bottom to such a berg giving unequal buoyancy to parts causes this faulting. The second berg was domed, having a twin peak. These bergs are still a puzzle. I rather cling to my original idea that they become domed when stranded and isolated. These two bergs had left long tracks of open water in the pack.
In the Aspen mining district in Colorado faulting is now going on at a comparatively rapid rate. Although no sudden slips take place, the creep of the rock along certain planes of faulting gradually bends out of shape the square-set timbers in horizontal drifts and has closed some vertical shafts by shifting the upper portion across the lower.
Should you expect the lateral valleys of a rift valley at the time of its formation to enter it as hanging valleys or at a common level? BLOCK MOUNTAINS. Dislocations take place on so grand a scale that by the upheaval of blocks of the earth's crust or the down- faulting of the blocks about one which is relatively stationary, mountains known as block mountains are produced.
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