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← GeographyWhich geological consequence directly results from the angle of subduction of oceanic lithosphere under continental lithosphere?
A)Width of the volcanic arc produced✓
B)Depth of the resulting oceanic trench
C)Frequency of transform fault earthquakes
D)Rate of seafloor spreading acceleration
💡 Explanation
When oceanic lithosphere subducts at a shallow angle, the contact area under the overriding plate increases, resulting in a wider volcanic arc because magma is generated over a broader zone. Therefore a wider volcanic arc results, rather than trench depth, earthquake frequency or spreading rate, which are controlled by distinct parameters.
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