Easter Fracture Zone

Easter Fracture Zone

       submarine fracture zone in the southeastern Pacific Ocean, defined by one of the major transform faults traversing the northern part of the East Pacific Rise. The Easter Fracture Zone is 3,700 miles (5,900 km) long, extending east-southeastward from east of the Tuamotu archipelago, at 20° S latitude and 131° W longitude, to the Peru-Chile Trench at the 26° S latitude. The fracture zone is associated with several volcanic islands, including Easter Island, for which it was named. Maximum relief of the fracture zone's ridges and troughs is about 9,800 feet (3,000 metres). The Peru Basin north of the lineament is about 13,000 feet (4,000 metres) deep, several thousand feet deeper than the seafloor to the south.

      Seismic activity along the fracture zone is limited to the point of intersection of the transform fault with the East Pacific Rise. Seafloor spreading is believed responsible for the formation of the fracture zone, a scar produced by transform faulting.

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