Circum-Pacific Belt. About 68% of world’s earthquakes are observed along the coasts of vast Pacific Ocean. This is known as the ‘ring of fire’. This is the area of intense volcanic activity also. This areas is closely linked with the region of crustal dislocations and volcanic phenomenon. Chile, California, Alaska, Japan, Philippines, New Zealand and the mid-ocean areas have had many minor and major earthquakes in this belt. Mountains here run along the border of continents and nearly parallel to the depressions in oceans. It causes sharpest break in relief which becomes a cause for the earthquakes.