American Museum of Natural History
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The student discusses rocks and how they are read by observing their color, their grain (smooth, coarse, or fine), hardness, and the location in which they are found. The student then describes how the Grand Canyon contains rock layers that range in age from 1,800 million years old to about 270 million years old and explains how the Canyon was formed by flooding of inland seas and windy desert conditions that eroded and sculpted the Canyon over the last 5 to 6 million years. The writer shows how the Grand Canyon is a living example of erosion and construction over time.
From the Paper:"Journal Rocks are read by observing their color, their grain (smooth, coarse, or fine), hardness, and the location in which they are found. The Grand..."
Cite this Term Paper:
American Museum of Natural History (2007, December 01) Retrieved September 15, 2019, from https://www.academon.com/term-paper/american-museum-of-natural-history-134613/
"American Museum of Natural History" 01 December 2007. Web. 15 September. 2019. <https://www.academon.com/term-paper/american-museum-of-natural-history-134613/>