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Author Question: What is an accretionary wedge? A) Deformed and thrust-faulted continental lithosphere B) A fan ... (Read 36 times)

ahriuashd

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on: Jul 15, 2018
What is an accretionary wedge?
 
  A) Deformed and thrust-faulted continental lithosphere
  B) A fan of sediments at the bottom of a deep-ocean trench
  C) Sediments and ocean crust fragments being scraped off of a subducting plate
  D) Fault blocks that are slipping down due to extension in a back-arc basin

Question 2

How can subduction result in the emplacement of batholiths?
 
  A) Partial melting of the mantle overlying the subducting plate creates magma.
  B) Decompression melting of the plate creates magma.
  C) Friction of descending plate creates magma.
  D) Pillow basalts get subducted with plate and forced into overriding plate.


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aloop

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: A


ahriuashd

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Reply 2 on: Jul 15, 2018
Great answer, keep it coming :)

olderstudent

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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