What is cleavage refraction and how can we explain it?

What will be an ideal response?


Answer: Cleavage refraction is the symmetric fanning of cleavage associated with folds in layers with contrasting competence. A way of explaining this is that incompetent layers experience (more) flexural slip that rotates the cleavage in these layers during folding.

Environmental & Atmospheric Sciences

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What is particularly troublesome about the practice of mountaintop removal for mining coal in the mountains of West Virginia?

A. Dumping of waste rock in the surrounding valleys B. Land subsidence C. Cave-ins D. Gas explosions

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Evidence supporting the hypothesis of continental drift

What will be an ideal response?

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Which item is not considered to have a basic pH?

a. baking soda b. household ammonia c. black coffee d. seawater e. bleach

Environmental & Atmospheric Sciences

List the major bodies of water for the Latin American region:

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