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Author Question: What are the four basic types of magma compositions, and how do they differ in their respective ... (Read 22 times)

waynest

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on: Jul 16, 2018
What are the four basic types of magma compositions, and how do they differ in their respective abundance of silica, iron, and magnesium?
 
  What will be an ideal response?

Question 2

How are pyroclastic deposits classified?
 
  What will be an ideal response?


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Hikerman221

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

Felsic: highest silica content, lowest Fe-Mg content
Intermediate; medium silica content; medium Fe-Mg content
Mafic: low silica content; high in Fe-Mg content
Ultramafic: lowest silica content; highest Fe-Mg content

Answer to Question 2

The size of the fragments is used to classify pyroclastic material.


waynest

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Reply 2 on: Jul 16, 2018
Wow, this really help

hollysheppard095

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Reply 3 on: Yesterday
Excellent

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