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← GeographyWhich mechanism causes localized crustal uplift when fluids are released during subduction?
A)Mantle convection drag at surface
B)Isostatic rebound from glacial unloading
C)Serpentinization-induced volume increase✓
D)Eustatic sea level rising inland
💡 Explanation
When fluids are released from the subducting slab, serpentinization occurs because water reacts with ultramafic rock in the overriding plate, increasing its volume and thus inducing uplift. Therefore uplift via serpentinization is correct, rather than convection, isostatic rebound, or sea level rise which rely on other mechanisms.
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