Which outcome arises as oceanic crust subducts at a deep-sea trench off the coast of Chile?

💡 Explanation

When oceanic crust subducts under continental crust, compressional forces lead to shortening and thickening of the continental crust as material is accreted because the descending plate is scraped. Therefore continental thickening results, rather island arcs or spreading which involves rising magma, and trasform faults result from lateral motion.

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• Which outcome occurs when groundwater depletion lowers the potentiometric surface in soluble bedrock?