Utah Fracture Zone

Below southern Utah the sedimentary rock is shattered. The great layers of red sandstone that were deposited by the Cretaceous Sea were cracked and crushed by the northward thrust of the Mexican land mass. The irregular erosion of the red rocks throughout this region owe their existence to this tectonic action. There had to be a significant compression into this area to achieve today's alignments.



Utah Fracture Zone Active faults in Southern Utah and Northern Arizona The fault zone map shows active faults in the area just north of the east-west compression zone predicted by the Mexican Disconnection Theory.

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