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Showing posts with the label geography notes

South California-Landscape description

 South California The region called southern California slowly assembled over billion years recycled through lithosphere (Earth, Crust and Mantle) or accumulated from precipitation and biological activity in the oceans. Majority of the continental crust that is now considered to be of California was accumulated from the crust that formed beneath the Pacific Ocean region. The phase of deposition occurs in many geological time scales (Allen, C. R., Amand, P. S., Richter, C. F., & Nordquist, J, 1965). Precambrian History Archean - The oldest rocks in North America are of Late Archean age and are generally exist in the Canadian Shield region and also in the Rocky Mountain region. In California, none of these rocks of age is found. Early to Middle Proterozoic -   The oldest rocks exist in California region belongs to metamorphic rocks in the region of Mojave Desert ranging from 1600 to 1800 million years old. Late Proterozoic – The region of Mojave Desert experiences