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Author Question: Plutonic rocks subjected to high temperature and pressure transform by A) recrystallization of ... (Read 86 times)

fasfsadfdsfa

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on: Jul 29, 2018
Plutonic rocks subjected to high temperature and pressure transform by
 
  A) recrystallization of existing mineral grains.
  B) deformation of mineral grains.
  C) melting down of existing minerals.
  D) any of these

Question 2

Does the fact that the mantle is beneath the crust necessarily mean that the mantle is denser than the crust? Explain.
 
  What will be an ideal response?


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mochi09

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: The differential separation of elements during Earth's formation resulted in heavier elements migrating toward the center of the planet and lighter elements floating to the surface. So yes, the greater density of the mantle contributes to its position beneath the crust.


fasfsadfdsfa

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Reply 2 on: Jul 29, 2018
Wow, this really help

frankwu0507

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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