The April 6th, 2013 M 7.0 earthquake beneath Irian Jaya, Indonesia, occurred as a result of oblique-normal faulting, at the depth of approximately 70 km. At the location of this earthquake, the Pacific and Australia plates converged at a rate of approximately 110 mm/yr in an east-northeast- west-southwest direction, resulting in the southward subduction of the Pacific plate beneath New Guinea at the New Guinea trench,north of the island.
The depth and faulting mechanism of the April 6th earthquake indicate that it likely ruptured a fault within the subducting Pacific lithosphere rather than on the shallower thrust interface between the two plates.
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