Travel and Enjoy the " Wonderfull Grand Canyon"
Thursday, June 27, 2013
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Grand Canyon was first seen by Europeans in 1540, García López de Cárdenas from Spain. The first scientific expedition to the canyon was led by U.S. Major John Wesley Powell in the late 1870s. Powell pointed to the sedimentary rocks exposed in the canyon as "leaves in a great story book". However, long before that time, the region has been inhabited by Native Americans who built the residence in the canyon walls.
The canyon, created by the Colorado River cutting a channel over millions of years, the length of approximately 446 km, with a width ranging from 6 to 29 km and a depth of more than 1,600 m. Nearly 2000 million years of Earth history have been cut by the Colorado River and its tributaries layer after layer of sediment as the Colorado Plateau began to rise.
Nature require 1.7 billion years to form the Grand Canyon located in Northern Arizona, United States. Formation process through various critical periods of the earth. Climate change, arising sinking continents, forming mountains, and others. Each period of change, contributing one layer at the Grand Canyon. By examining the layers upon layers of the Grand Canyon, we can see what is happening on our planet for 1.7 billion years.
Here you can enjoy the pictures.
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Judul: Travel and Enjoy the " Wonderfull Grand Canyon"
Ditulis oleh Unknown
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