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Riding back to El Tovar, with thoughts like these, the visitor imagines himself riding to a City Celestial. He reaches the plateau, studies for a while the unique coloring of the Algonkian strata just above the Granite Gorge, and sees where the faulting has raised them above the Tonto sandstones. Then, steadily looking upward, he rides forward, climbing slowly but surely to the peaks above.
Do not slog the first ball and pat the second, but hit both with average pace. Try for service aces whenever reasonable, but never do so at the risk of double faulting. The first ball is the ball to ace. The second should never be risked. Your aces must at least equal your double faults, or your service is a handicap and not an advantage.
Along one of the faults of this region it is estimated that there has been a movement of at least four hundred feet since the Glacial epoch. More conspicuous are the instances of active faulting by means of sudden slips. The country on one side was depressed in places twenty feet below that on the other, and also shifted as much as thirteen feet horizontally in the direction of the fault line.
When you consider that from north to south, for a hundred or more miles, the whole region has been heaving and tossing, curving and buckling, arching and crumpling its strata, faulting by rising, faulting by sinking, until the geologist who would study the faults finds, in the area of one half-mile, near the mouth of Shinumo Creek, his work for a lifetime cut out for him. No! No! Mr.
This faulting, as is readily seen, would produce cracks, and as the uneven uplift continued; the strata on one side of the crack would be lifted higher than the strata on the other side. Or, the strata on one side of the crack would be uplifted, while the other would subside. Bright Angel Fault. El Tovar rests directly upon the strata affected by the Bright Angel Fault line.
We might have fewer earthquakes although, to be sure, ours are supposed to be caused by faulting in so far as they know anything about it." "Do you think of nothing but earthquakes out here? You have made at least three casual allusions since we met twenty-four hours ago, and in southern California they are a part of every tradition."
This statement holds true for all tennis strokes, but in none so strongly as in service. The average player hits, his first service so hard, and with so little regard for direction, that about nine out of ten first deliveries are faults. Thus, one half your chances are thrown away, and the chance of double faulting increased proportionately.
In other parts of the cordillera great masses of rock have been pushed horizontally upon the tops of others. In Montana, for example, the strata of the plains have been bent down and overridden by those of the mountains. These are only a few of the countless forms of breaking, faulting, and crumpling which have given to the cordillera an almost infinite variety of scenery.
A similar but greater contrast separates the mountains of eastern North America and those of the western cordillera the fourth and last of the main physical divisions of the continent. In both the Laurentian and the Appalachian highlands the eastern mountains show no trace of the original forms produced by the faulting of the crust or by volcanic movements.
Here the visitor should not fail to observe the faulting in the sandstone, there being a difference in the two sides of about two hundred feet. Without this fault there would have been no trail, for to the lifting up, or dropping down of the strata, is due their shattered condition, which alone makes trail-building possible.
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