In the lower right part of the map, what is the relative age of the bright red rock layer compared with the pale green layer? Note that the thin blue line running through the red layer represents the Colorado River, which flows through the bottom of the Grand Canyon.

Question

Geography

Cobweb

27 December, 22:14

In the lower right part of the map, what is the relative age of the bright red rock layer compared with the pale green layer? Note that the thin blue line running through the red layer represents the Colorado River, which flows through the bottom of the Grand Canyon.

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Answers (1)

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Gabriel Sherman · Answer 1

515 million years.

Explanation:

The grand canyon is one of the most complex rocks structures on earth with about 40 main sedimentary rocks layers combined and is 200 million to 2 billion years old. The canyon is formed by the three sets of rocks as Vishnu basement rocks that includes the shists, granite. The grand canyon superimposed rocks like the chuar group, under group. The pale green rocks are relatively 515 years old in the Cambrian rock formations. And the red rocks are the Permian rocks formation of 340 million years. Thus the younger rocks are at the top and older green at the bottom.