Geography, 13.07.2021 20:00 bighoneypadrick
Melting above the subducted slab produces mafic magma, as described above, yet intermediate rocks (andesite, diorite) between oceanic and continental lithosphere, explain how this intermediate magma forms.
(a) A relatively small amount of intermediate magma occurs in volcanic island arcs. Remembering that melting above the subducting slab produces mafic magma, explain the origin of the intermediate magma.
(b) Much more intermediate magma erupts in continental arcs. Why?
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Melting above the subducted slab produces mafic magma, as described above, yet intermediate rocks (a...
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