Near the Chilean coast, increased deep-sea trench formation indicates expansion?

💡 Explanation

Andean mountain building arises from subduction because compression at the plate boundary causes crustal thickening and uplift via orogeny within the continental crust; therefore mountain formation accelerates, rather than oceanic crust generation, sedimentation, or plate density changes.

• Which outcome commonly results following extensive groin construction inhibiting longshore sediment transport near barrier islands?
• Which outcome occurs when rapid snowmelt overwhelms levees?
• Which landform results through seasonal thaw in permafrost?
• Which mechanism initiates the creation of a cirque on a mountainside subject to glaciation?
• Which outcome is directly caused when aseismic creep along a transform fault stalls completely?
• Which outcome is most immediate during intense pyroclastic surge?