What type of rock is the vishnu schist?
- how old is vishnu schist
- how old is the vishnu schist in the grand canyon
- how old is the vishnu schist at the base of the grand canyon
- how is vishnu schist formed
How was the vishnu schist formed!
Were the protoliths of the rocks in the vishnu schist sedimentary or igneous?
Basement Rocks of Grand Canyon
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Layers Overview Introduction
Kaibab Formation Toroweap Formation Coconino Sandstone Hermit Formation Supai Group
Redwall Limestone Tonto Group Muav Limestone Bright Angel Shale Tapeats Sandstone Vishnu Complex
Proterozoic Era, 1700 Million Years Old, Unknown Thickness
Black rugged Inner Gorge with pink and white granite plutons
The rocks at the bottom of the Canyon are the roots of a major mountain range.
Grain by grain, creek by creek, landslide by landslide, the mountains eroded down until at last the land was at sea level. These are among the basement rocks of Arizona--the oldest rocks, upon which all other rocks are deposited.
Prior to this time, Arizona and much of the Southwest did not exist.
For many years, this Inner Gorge complex of rocks has been known as the Vishnu Schist, and popular literature still calls it that.
The Vishnu Complex is schist, gneiss, and granite.
The Vishnu mountains resulted fr
- what is vishnu schist
- vishnu schist age