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Which outcome occurs following magma convection decline within a lava dome?

A)Increased surface crustal instability
B)Accelerated fractional crystallization trend
C)Decreased volatile gas emission rate
D)Heightened effusive eruption potential

💡 Explanation

Increased surface crustal instability will result because magma convection decline leads to reduced heat flux causing the lava dome's surface to cool rapidly. This promotes brittle fracturing, leading to gravitational collapse rather than continued stable volatile emission.

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