Which crustal deformation occurs due to hydrated mineral formation during oceanic plate subduction?

💡 Explanation

When oceanic lithosphere subducts, hydration of mantle wedge rocks through water released from the subducting slab promotes serpentinization, which decreases density and causes uplift and thrust faulting in the corresponding forearc region. Therefore forearc basin subsidence coupled with compressional features results, not rifts, strike-slip, or shield volcanoes which form via extension or mantle plumes.

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