Which topographic consequence results from the subduction of an oceanic plate beneath a continental plate lacking sufficient sediment?

💡 Explanation

When a sediment-starved oceanic plate subducts under a continental plate, the lack of sediment to fill the depression leads to the formation of a deep ocean trench, directly related to the angle of subduction. A deep ocean trench results, rather than volcanic activity or coastal plain formation which require significantly different geological settings and sediment accumulation profiles.

• Which phenomenon enhances coastal upwelling along the western margins of continents due to Ekman transport effect?
• Which atmospheric phenomenon results when Coriolis force deflects geostrophic winds around a high-pressure system at altitude?
• Which mechanism is most dominant immediately inland from an oceanic-continental subduction zone?
• Which process maximizes the formation of fine-grained sediment deposits within an oxbow lake?
• Which outcome occurs when intense rainfall follows logging?
• What outcome arises as meltwater discharge decreases at glacial alluvial fans?