All of the Following Processes Contribute Felsic Material to Rising

question 43

Multiple Choice

All of the following processes contribute felsic material to rising basaltic magmas EXCEPT:

• A) melting of accumulated biogenic silica from marine microorganisms.
• B) subduction zone magmas assimilate overlying crustal rocks.
• C) melting of accumulated detrital continental sediments.
• D) partial melting of the warm mantle above a subducting oceanic slab.

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