Subduction occurs as a result of
A)slab pull-gravity pulls older and denser lithosphere downward.
B)horizontal plate accommodation.
C)upwelling of hot mantle material along the trench.
D)lubrication from the generation of andesitic magma.

Question

Quizplus · Accepted Answer

Subduction occurs due to slab pull forces, which are caused by the gravity of the denser oceanic plate pulling it down into the mantle underneath the less dense continental plate. As the oceanic plate moves downward, it can cause melting in the overlying mantle, leading to the formation of volcanoes and associated igneous rock formations. In contrast, B, C, and D are not correct because horizontal plate accommodation, upwelling of hot mantle material, and lubrication from andesitic magma are not key factors in subduction.

Subduction Occurs as a Result of