Studies of the Chemistry of Rocks from Arc Volcanos Indicate

Multiple Choice

Studies of the chemistry of rocks from arc volcanos indicate the main source of the magma is ________.

A) melting of subducted oceanic crust
B) melting of the subducted mantle lithosphere
C) melting of the asthenosphere above the subducting oceanic plate by frictional heating on the subduction interface
D) melting of the asthenosphere above the subducting oceanic plate by fluids acting as a flux to enhance melting