The Grand Canyon Of Arizona: How To See It By George Wharton James

 -  There are a great number
of these faults in the plateau country, most of them crossing the Canyon
from north - Page 137
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There Are A Great Number Of These Faults In The Plateau Country, Most Of Them Crossing The Canyon From North To South.

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. On going down the Bright Angel Trail, one cannot fail to see, as he passes the tap of the cross-bedded sandstone, the break in the strata. To the left it is fully one hundred and fifty to two hundred feet higher than it is on the right. The same depression may be observed in driving out to Hopi, Point, or returning. The stratum on which the road is made should be at the same level as the stratum on which El Tovar rests.

Fault at Bass Camp. This fault is but one of a score or more on the plateau. At Bass Camp there was a fault which displaced the strata on each side of the "break" to the extent of four thousand feet. Later, another fault occurred, which readjusted the displacement somewhat, and reduced the difference to two thousand feet, yet left the evidences of the former wide divergence. It was also during these uplift periods that the volcanic mountains of the region came into existence, as the San Francisco Range, Mounts Kendricks, Sitgreaves, Williams and Floyd on the south, and the Uinkarets - Mounts Trumbull, Logan, Emma - on the north.

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