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← GeographyWhich volcanic outcome from Iceland's glaciers melting occurs from isostatic rebound?
A)Increase in eruption frequency✓
B)Increase in lava viscosity
C)Decrease in stratovolcano formation
D)Decrease in overall magma production
💡 Explanation
Increased eruption frequency occurs due to decreased pressure on the mantle; therefore, isostatic rebound triggers decompression melting, because the removal of ice mass reduces lithostatic pressure rather than altering magma properties during fractional crystallization.
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