Which crustal response results from the ongoing subduction along megathrust boundaries?

💡 Explanation

Forearc basins accumulate sediment because the subducting plate scrapes material off the overriding plate in a process called accretionary wedge formation; therefore, sedimentation substantially expands there, rather than reducing volcanism via melt reduction.

• Which hazard results because unconfined pyroclastic density currents from a collapsed eruption column encounter topographic constraints?
• Which outcome commonly occurs near continents within anticyclonic oceanic gyres?
• Which mechanism explains shield volcano formation associated with mantle plumes?
• Which primary effect follows the artificial lengthening or heightening of river levees to manage flood risk?
• Which outcome occurs when a substantial section of a naturally formed levee is removed along a major river?
• Which outcome is associated with cyclical elastic strain accumulation within a fault zone?