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Author Question: Compare and contrast the formation of a primary magma to that of a secondary magma. How does each ... (Read 78 times)

faduma

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on: Jul 15, 2018
Compare and contrast the formation of a primary magma to that of a secondary magma. How does each form?
 
  What will be an ideal response?

Question 2

Match the geologic location with the type of mountain building. Please note that your choices may be used more than once.
 
  A) Fault-block mountain building
  B) Andean-type mountain building
  C) Alpine-type mountain building
  D) Cordilleran-type mountain building
  E) Island arc-type mountain building
 
  1) Sierra Nevada Mountains
  2) Himalayan Mountains
  3) North American Cordillera
  4) Basin and Range Province
  9) The Alps
  5) Teton Range
  6) Japanese Archipelago


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phuda

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

Answer: Primary magmas are generated through the partial melting of ultramafic rock. This makes a mafic magma. As this magma rises due to lower density, the ferromagnesian crystals will settle out, resulting in a more silica-rich, felsic, or intermediate magma. This would be the secondary magma.

Answer to Question 2

Answers: 1) B 2) C 3) D 4) A 5) C 6) A 7) E


faduma

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

essyface1

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

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