Which geological feature results primarily from sediment accretion within an oceanic trench in a subduction zone?

💡 Explanation

When sediments accumulate within an oceanic trench during subduction, an accretionary wedge forms because the sediments are scraped off the downgoing plate. Therefore accretionary wedge formation results, rather than ridge development, rift expansion or hotspot volcanism which require different tectonic settings.

• Which process contributes significantly to the formation of freshwater lakes in tectonically active rift valleys?
• Which effect occurs due to overriding plate deformation?
• Which outcome limits island widening due to sediment deposition?
• Which consequence results when increased trade wind intensity enhances coastal upwelling?
• Which process limits alluvial fan deposition at a tectonic basin's distal edges?
• Which landform results from variations in stream deposition rates?