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Author Question: Why do metamorphic rocks exist at the surface? What will be an ideal ... (Read 30 times)

lb_gilbert

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on: Jul 16, 2018
Why do metamorphic rocks exist at the surface?
 
  What will be an ideal response?

Question 2

How do geologists know how to determine the stability of minerals?
 
  What will be an ideal response?


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bobsmith

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Reply #1 on: Jul 16, 2018
Answer to Question 1

You just saved me a lot of time. ;)

Answer to Question 2

Answer: Many minerals are stable over limited ranges in temperature and pressure. Changes in these two variables cause reactions that result in the formation of new mineral or minerals. Laboratory experiments conducted with different minerals at measured temperatures and pressures reveal the specific conditions under which common metamorphic minerals are stable.


lb_gilbert

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

pangili4

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Reply 3 on: Yesterday
Excellent

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