Which geological change results when thermal convection weathers a subducting oceanic plate?

💡 Explanation

When a subducting plate undergoes weathering via thermal convection, volatiles are released. This decreases the melting temp of the above asthenosphere leading to flux melting and magma formation feeding a volcanic island arc formation because of this process rather than increased ocean ridges or faults.

• Which outcome exacerbates coastal flooding during an El Niño event due to altered atmospheric circulation?
• Which outcome results from the Coriolis effect on large-scale ocean currents moving away from the equator?
• Which geomorphic outcome preferentially develops along a strike-slip transform plate boundary?
• Which outcome results when tectonic uplift overcomes weathering in badland regions?
• Along strike-slip faults, which mechanism causes formation of sag ponds in arid environments?
• Which outcome arises when a gyre's density gradient weakens?