How Does Rhyolite Magma Form in the Line of Arc

question 17

Multiple Choice

How does rhyolite magma form in the line of arc volcanoes like the Cascades?

• A) Rhyolite is not found in the Cascades volcanoes.
• B) Basalt magma rising from above the subducted slab rises to melt continental crust to form the rhyolite.
• C) The subducted slab gets hot enough at depth that it melts to form rhyolite.
• D) Friction at the top of the subducted slab heats the mantle to form rhyolite.
• E) Water rising from the subducted slab causes melting of the Earth's mantle to form rhyolite.

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