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Author Question: A ________ texture includes coarse phenocrysts surrounded by a phaneritic groundmass. A) ... (Read 74 times)

jparksx

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on: Jul 16, 2018
A ________ texture includes coarse phenocrysts surrounded by a phaneritic groundmass.
 
  A) pegmatitic
  B) porphyritic
  C) glassy
  D) aphanitic

Question 2

Where do ultramafic rocks form?
 
  A) At convergent boundaries
  B) In volcanoes
  C) At the Earth's surface
  D) At the upper mantle


kusterl

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

Answer: B

Answer to Question 2

Answer: D


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