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Which outcome occurs when oceanic plate subduction stalls?

A)Decreased buoyant magma upwelling.
B)Increased transform fault slipping.
C)Enhanced forearc basin sedimentation.
D)Reduced metamorphic rock exhumation.

💡 Explanation

A stalled subducting slab reduces asthenosphere convection; therefore buoyant magma upwelling decreases because slab-pull is absent and mantle flow weakens. Transform slippage will not systematically increase, rather than sedimentation changes. Metamorphic exhumation requires active collision.

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