The Cambrian System

Paper Summary:

This paper researches and examines the relevant information available in relation to the Cambrian System of the Grand Canyon. The paper explains that the lower middle and upper series in the stratigraphic scale of the Cambrian is a duration of over 50 million years but the three faces of the Tonto group deposited simultaneously appear super and juxtaposed which could be explained due to a varying velocity of the water flow in the different zones while sedimentation was still in its formation process.

Outline
Objective
Introduction
The Cambrian System
Stratigraphy of the Grand Canyon
The Tonto Group Formations and Layers
Zones in the Tonto Group Strata
Summary

From the Paper:

" 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 the Vishnu and the Zoroaster rocks. (Grand Canyon, 1989) "

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