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Geography

Which outcome occurs when plate motion stalls following subduction?

A)Isostatic rebound causes crustal uplift
B)Widespread effusive flood basalt eruption
C)Rapid lithification of mantle material
D)Increase in Wilson cycle periodicity

💡 Explanation

Isostatic rebound results because the removal of the downgoing slab lightens the crust; therefore, the buoyant lithosphere rises rather than continue subducting. Slab pull ceases rather than promoting volcanism commonly seen with active oceanic subduction.

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