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← GeographyWhich outcome occurs when ice-sheet unloading follows deglaciation?
A)Fault reactivation causes enhanced seismicity✓
B)Crustal relaxation reduces earthquake frequency
C)Mantle convection accelerates plate subduction
D)Isostatic rebound diminishes volcanic eruptions
💡 Explanation
Fault reactivation causes enhanced seismicity near previously glaciated regions because the removal of ice sheet mass changes the stress regime on existing faults, therefore triggering earthquakes rather than suppressing them through crustal relaxation alone.
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