Cambrian System of the Grand Canyon
The purpose of this work is to research and examine the relevant information available in relation to the Cambrian System of the Grand Canyon.
Just above the break in the historical record of rocks which is referred to as "the unconformity" in the Grand Canyon noticed in 1869 by John Wesley Powell while on his pioneer voyage, are the Cambrian Tapeats Sandstone. The Great Uncomformity is stated to represent about 1/2 billion years of missing time! According to some the answer is stated as follows:
"During Grand Canyon Supergroup time, a hypothesized supercontinent called Rodinia assembled at about 1.1 Ga, and then broke apart around 0.75 Ga. The first life forms with a nucleus, single-celled creatures called Eukaryotes, were becoming more diverse, testing the waters for their future evolutionary extravaganza known as the 3 Cambrian Explosion.2 Changes in global seawater composition reflects complex changes in climate, tectonics, atmosphere, and biosphere."
Whatever the answer may be, the Cambrian System itself is an amazing system to study in relation to its' formation.
I. The Cambrian System
The stratigraphy of the Grand Canyon is illustrated in the chart below: Precambrian sedimentological layer is a "complex group of highly metamorphic and intensively folded rock of the "Vishnu Group," inclusive of chlorite-mica schist, with minor amount of amphibolites, gneiss and calc-silicate rocks. Occurrences of Zoroaster pink feldspars granite is noted with intrusion of Vishnu rocks vertically and pegmatic veins that are as thick as multiples of ten meters. The Zoroaster and Vishnu rocks the compositional materials of the Lower Proterozoic. These rocks are laid over by tilted Upper Proterozoic volcanic0sedimentary Grand Canyon Supergroup in some tectonic depressions with the Tonto Group of the Cambrian System overlaying...
Besides these two cavern systems, there is another system of caves located in Mexico known as the Cave of Crystals which lies far beneath the Chihuahuan Desert and currently produces large amounts of lead and silver. This cavern system is also made up of limestone; however, the crystals found in this system are unlike any found in the world, for they were formed by the action of super-heated magma which
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