Which risk increases when an oceanic plate subducts beneath a continental plate with high sediment cover?

💡 Explanation

When an oceanic plate subducts beneath a continental plate with high sediment cover, lubrication of the subduction zone occurs because the sediment reduces friction between plates, allowing greater stress accumulation. Therefore, the risk of megathrust earthquakes increases rather than decreasing magma viscosity, forming ultra deep trenches or a slower rate of convergence each requires distinct geological conditions.

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• Which outcome arises when a major landmass disrupts a subtropical gyre's western boundary current?
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• Which process limits the downcutting rate in cirques during glacial maximum?