GEOLOGY

Detailed explanation-1: -shallow earthquake are earthquake of low magnitude. they occur at the depth of 0-70 km. they occur at the divergent plate boundaries where the two oceanic plates move away from each other and also at the middle of the continent rift zones. these are less deep and occur at the earth’s outer crustal layer.

Detailed explanation-2: -Earthquakes at Divergent and Transform Plate Boundaries. Earthquakes along divergent and transform plate margins are shallow (usually less than 30 km deep) because below those depths, rock is too hot and weak to avoid being permanently deformed by the stresses in those settings.

Detailed explanation-3: -(i) Shallow-focus earthquakes appear to be associated with mid-ocean ridges, with mountain ranges in the interior of the continents of Europe and Asia, and with the mountains and ocean trenches that surround the Pacific Ocean.

Detailed explanation-4: -Shallow earthquakes are between 0 and 70 km deep; intermediate earthquakes, 70-300 km deep; and deep earthquakes, 300-700 km deep. In general, the term “deep-focus earthquakes” is applied to earthquakes deeper than 70 km.

Detailed explanation-5: -Most quakes occur at shallow depths, according to the U.S. Geological Survey.