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← GeographyWhich geological outcome results when mantle plume weakening occurs under Iceland?
A)Reduced seafloor spreading rate✓
B)Increased glacial isostatic rebound
C)Strengthened transform fault activity
D)Enhanced stratovolcano formation
💡 Explanation
A smaller mantle plume leads to decreased magma production and spreading at the Mid-Atlantic Ridge due to thermal buoyancy reduction weakening the upwelling; therefore, lower spreading, rather than increased glacial rebound after volcanic loading changes, is the observed effect rather than transform ruptures.
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