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For here we have an immense area east of the main divide, extending from the middle of Montana up to the Yellowhead Pass in Alberta, or over 350 miles long, where the tops of the mountains consist of jointed limestones or argillites of Algonkian or pre-Cambrian "age," resting on soft Cretaceous shales.
Slowly or rapidly, they yielded to this disintegrating process, and as the rocky masses broke up, they were washed by the rills and streams into the bed of the sea, where they soon rested upon the tilted ends of the Algonkian strata and exposed surfaces of the Archaean masses, waiting for them. The Deposition of the Tonto Sandstones.
The noun Algonkin, meaning an Indian, is also spelled Algonquin. But the adjective from this noun is spelled Algonquian when applied to Indians, and Algonkian when applied to a time or period in geology. Piskaret was a hero.
Then push on west to the Greenland Spring, over Walhalla Plateau to Naji Point, whence you can look down into Chuar Creek, where Dr. Walcott, with three Mormons, spent a snowy winter studying the Algonkian strata. An Adventurous Trip. Or, better still, if you are ready for whatever adventure may befall on a seldom used trail, descend Dr.
The tilted rocks on whose upturned edges the Cambrian sandstone rests are far older, for the physical break which separates them from it records a time interval during which they were upheaved to mountainous ridges and worn down to a low plain. They are therefore classified as Algonkian. They comprise two immense series.
Eleven thousand five hundred feet of Algonkian gone; a small amount of erosion in the Cambrian epoch, the depth of which is unknown; and then the great denudation of the Eocene period sweeping away upwards of fifteen thousand feet of strata, give us a total of twenty-six thousand five hundred feet that have totally disappeared from the Canyon region.
One may approximately estimate the various strata of the wall of the Kaibab as follows: Colorado River, say. . . 2400 feet above sea level Archaean . . . . . . . . 1000 " thick Algonkian . . . . . . . 1100 " " Cambrian . . . . . . . . 1000 " " Carboniferous . . . . . 2750 " " Total level above sea. . 8250 Bass Tomb or Holy Grail Temple. The great north wall is not featureless.
These diverse forms indicate that before the Algonkian had closed, life was abundant and had widely differentiated. We may expect that other forms will be discovered as the rocks are closely searched. PRE-CAMBRIAN GEOGRAPHY. Our knowledge is far too meager to warrant an attempt to draw the varying outlines of sea and land during the Archean and Algonkian eras.
At the mouth of Bright Angel, they rest upon the archaean, with the Tonto sandstones above them, but just in front of the Battleship a break in the gneiss occurs, and on the portion nearest us the Algonkian strata totally disappear, for the Tonto strata rest directly upon the gneiss. Zoroaster, Brahma and Deva Temples.
No Algonkian or Iroquois Indian ever built a stone wall in his life; there is no record of any and no signs of any throughout the United States east of the Mississippi; there was never a stone wall built by a native tribe that really amounted to anything more than a stone pile; but we do find that in the southwest, among the cliff dwellers, and in various parts of Central America and South America, the stone wall was not only known, but it was constructed with a great deal of durability and skill.
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