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← GeographyWhich geological change results when thermal convection weathers a subducting oceanic plate?
A)Formation of a volcanic island arc✓
B)Increased rate of seafloor spreading
C)Development of a transform fault system
D)Accelerated rate of glacial retreat
💡 Explanation
When a subducting plate undergoes weathering via thermal convection, volatiles are released. This decreases the melting temp of the above asthenosphere leading to flux melting and magma formation feeding a volcanic island arc formation because of this process rather than increased ocean ridges or faults.
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