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Author Question: Foliation in metamorphic rocks is due to directed stress, which causes elongated minerals to orient ... (Read 94 times)

arivle123

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on: Jul 29, 2018
Foliation in metamorphic rocks is due to directed stress, which causes elongated minerals to orient themselves
 
  A) in parallel planes with the face of each plane parallel to the direction of maximum stress.
  B) in alignment.
  C) so that smaller crystals precede larger crystals.
  D) in parallel planes perpendicular to the direction of maximum stress.

Question 2

The metamorphism of coal to anthracite occurs due to
 
  A) high pressure and high temperature.
  B) high temperatures.
  C) contact metamorphism.
  D) crystallization of organic matter.


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jxjsniuniu

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

Answer: D

Answer to Question 2

Answer: A


arivle123

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Reply #2 on: Jul 29, 2018
Thank you!


jxjsniuniu

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Reply #3 on: Jul 29, 2018
Always glad to help...


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