Explain why earthquakes occur at greater depths at convergent boundaries than at divergent ...

At convergent boundaries the compressional forces that occur as a result of two plates
pushing together produces violent geological activity. One plate is subducted underneath the
other plate, the leading edge pulled downward by gravity into the mantle. Lithospheric crust
will melt as the plate plunges downward and its temperature rises. Volatile components, such
as water and carbon dioxide, are driven off and rise toward the overriding plate. Magma rises
to the surface and causes volcanic eruptions and earthquakes. Earthquakes that form in these
regions may occur at greater depth along the sliding edge of the subducting plate as it
descends into the mantle.