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Author Question: What are the four basic types of magma compositions, and how do they differ in their respective ... (Read 44 times)

waynest

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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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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
YES! Correct, THANKS for helping me on my review


mcarey591

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

 

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