Sunday 8 September 2013

Magnitude 5.0 Earthquake on Mindanao Island, the Philippines.

The United States Geological Survey recorded a Magnitude 5.0 Earthquake at a depth of 96.1 km on Mindanao Island in the Philippines, close to the city of Tandag in Surigao del Sur Province, slightly before 5.30 pm local time (slightly before 9.30 am GMT) on Sunday 8 September 2013. This is a strong Earthquake, but rather deep, and there are no reports of any damage or injuries.

The approximate location of the 8 September 2013 Mindanao Earthquake. Google Maps.

The geology of the central Philippines is Complex. The west of Mindanao Island is located on the Banda (or Sunda) Microplate, and the east on the Philippine Plate, which is being subducted beneath the Sunda (or Banda) Microplate along the central part of the island. Immediately to the east of the Island the Pacific Plate is being subducted along the Philippine Trench, and passes beneath eastern Mindanao as it sinks into the Earth. This is not a smooth process, an the plates constantly stcik together then break apart again as the pressure builds up, resulting in Earthquakes.

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