The Grand Canyon of Arizona [13]
was Formed," will explain how this side gorge came into existence, and also account for the great upthrust of the granitic rock at its mouth, for the most casual observer cannot fail to note the presence of this rock much higher than it is seen elsewhere.
The North Wall. Before paying particular attention to the vast forms that crowd the interior of the Canyon, let us follow the "build" of the massive wall on the north side. This is part of the great Kaibab Plateau, the highest wall of the whole Canyon system. Its elevation is eight thousand three hundred, as against six thousand eight hundred and sixty-six feet at El Tovar, and it is thirteen miles in an air line from the south rim, where the hotel is located, to the north rim.
The reason for this difference in elevation is explained in the chapter "How the Canyon was Formed." 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. Yet it is well to note the massive red sandstone points that are lined up on either side on the plateau, above the darkest recesses of the gorge, reminding one of the rows of sphinxes that guard the entrances of some of the Egyptian temples.
Up Bright Angel Creek. Occasionally parties cross the river (either by boat or in an iron cage suspended by a cable), and ascend to the north rim by means of a rude trail up Bright Angel Creek. As the trail for a part of the way ascends the floor of the gorge, down which the stream flows, and as it is exceedingly narrow and without any way of escape in case of severe rain or flood, it is not always safe. To one, however, who loves a rough and adventurous trip, the ascent of this gorge will probably give great satisfaction. A little more than a third of the way up, a waterfall is passed, called "Ribbon Falls." The trail winds and twists with the course of the stream, and finally reaches the summit at an elevation of eight thousand five hundred feet, not far from Greenland Spring. From here one may go east over the Walhalla Plateau to Niji Point, and overlook the Chuar Valley at the mouth of Marble Canyon, where Dr. Walcott spent a winter studying the Algonkian strata of that region. To the west is Point Sublime, Powell Plateau, and other scenery of an unusually majestic character.
Features of the North Wall. But let us now return to the main north wall before us. The green tufts, that at this distance appear as grass or shrubs, partially covering the top of the wall and descending the slopes into the Canyon, are in reality great trees, mainly pines and black birches, from twenty-five to over one hundred and one hundred and fifty feet in height. The forest that covers the Kaibab Plateau contains many majestic trees, and some of these have wandered over the rim to peep into the depths of the abyss below. The cherty limestone strata are thus largely covered, but the next stratum is the clear band of cross-bedded sandstone, which corresponds to the second member of the geological series seen in the arm of the amphitheatre at Maricopa Point, and is from five hundred to six hundred feet wide.
Then the eye rests upon slopes of talus, which reach down to the red strata of varying thicknesses, which are deposited above the red-wall limestone, the widest member of the whole Canyon group. These walls are cut and recessed into all kinds of shapes and forms, angles, promontories and recesses, which, especially in the early morning and late afternoon, cast shadows of inexpressible beauty.
The Red-Wall Limestone. We now come to the red-wall limestone nearly six hundred feet in thickness. What a striking, massive wall it is, and how impressive, when seen even at this immense distance. This wall is red only because it is stained by the color washed down by the rain from the
The North Wall. Before paying particular attention to the vast forms that crowd the interior of the Canyon, let us follow the "build" of the massive wall on the north side. This is part of the great Kaibab Plateau, the highest wall of the whole Canyon system. Its elevation is eight thousand three hundred, as against six thousand eight hundred and sixty-six feet at El Tovar, and it is thirteen miles in an air line from the south rim, where the hotel is located, to the north rim.
The reason for this difference in elevation is explained in the chapter "How the Canyon was Formed." 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. Yet it is well to note the massive red sandstone points that are lined up on either side on the plateau, above the darkest recesses of the gorge, reminding one of the rows of sphinxes that guard the entrances of some of the Egyptian temples.
Up Bright Angel Creek. Occasionally parties cross the river (either by boat or in an iron cage suspended by a cable), and ascend to the north rim by means of a rude trail up Bright Angel Creek. As the trail for a part of the way ascends the floor of the gorge, down which the stream flows, and as it is exceedingly narrow and without any way of escape in case of severe rain or flood, it is not always safe. To one, however, who loves a rough and adventurous trip, the ascent of this gorge will probably give great satisfaction. A little more than a third of the way up, a waterfall is passed, called "Ribbon Falls." The trail winds and twists with the course of the stream, and finally reaches the summit at an elevation of eight thousand five hundred feet, not far from Greenland Spring. From here one may go east over the Walhalla Plateau to Niji Point, and overlook the Chuar Valley at the mouth of Marble Canyon, where Dr. Walcott spent a winter studying the Algonkian strata of that region. To the west is Point Sublime, Powell Plateau, and other scenery of an unusually majestic character.
Features of the North Wall. But let us now return to the main north wall before us. The green tufts, that at this distance appear as grass or shrubs, partially covering the top of the wall and descending the slopes into the Canyon, are in reality great trees, mainly pines and black birches, from twenty-five to over one hundred and one hundred and fifty feet in height. The forest that covers the Kaibab Plateau contains many majestic trees, and some of these have wandered over the rim to peep into the depths of the abyss below. The cherty limestone strata are thus largely covered, but the next stratum is the clear band of cross-bedded sandstone, which corresponds to the second member of the geological series seen in the arm of the amphitheatre at Maricopa Point, and is from five hundred to six hundred feet wide.
Then the eye rests upon slopes of talus, which reach down to the red strata of varying thicknesses, which are deposited above the red-wall limestone, the widest member of the whole Canyon group. These walls are cut and recessed into all kinds of shapes and forms, angles, promontories and recesses, which, especially in the early morning and late afternoon, cast shadows of inexpressible beauty.
The Red-Wall Limestone. We now come to the red-wall limestone nearly six hundred feet in thickness. What a striking, massive wall it is, and how impressive, when seen even at this immense distance. This wall is red only because it is stained by the color washed down by the rain from the