Plate Burmese

The Burmese plate or plate of Andaman is a microplaque tectonics of the Lithosphère of the Planet Ground. Its surface is of 0,012  70 Stéradian S. It is generally associated with the Eurasian Plaque.

It is more precisely located in the North-East of the Indian Ocean at the East of the Bay of Bengal and at the West of the Mer of Andaman. It covers is sea of Andaman, the islands Andaman and Nicobar and the West of the Northern point of the island of Sumatra.

The Burmese plate is in contact with the plates Indian, Eurasian, of the Australian Sonde and .

Its borders with the other plates are in particular formed of the Fosse of the arc of the Probe on the west coast of the islands Andaman and Nicobar. The Subduction of the Indian plate under the Burmese plate is at the origin of the formation of the ic Archipel S Volcan of Andaman and Nicobar. The dorsal present in the sea of Andaman is at the origin of the formation of this sea and the distance of the Andaman islands and Nicobar of the Malayan Péninsule since four million years.

The displacement of the Burmese plate is done towards North at a number of revolutions of 2,667° per million years according to a pole eulérien located at 08°89' of Northern Latitude and 75°51' of Longitude Western (référentiel : peaceful Plate).

Geological history

The creation of the Burmese plate results from the progression towards the North of the Indian Plaque at a constant speed (approximately sixteen centimetres per annum), progression accompanied by a dextral rotary movement. The combination of these two movements created a system of Faille S behind of the pit of subduction of the Probe by which the Indian plate disappears by Subduction under the Eurasian Plaque. The fault system thus disunited the Burmese plate of the remainder of the Eurasian plate and in particular of the Plaque of the Probe.

The December 26th 2004, a portion of fault of 1  200 kilometers along the border between the Burmese plate and the Indian plate caused a Séisme magnitude 9,0, one of most powerful than the man knew. On the 1  200 kilometers of rupture, a unevenness of fifteen meters occurred between the two edges of the fault (the Western part passing above the part Is), generating a tsunami which made approximately 220  000 dead (see: Earthquake of December 26th, 2004). The area remains active sismiquement since the March 28th 2005, a new seism magnitude 8,7 occurred (see: Earthquake of March 28th, 2005).

Related article

Sources

  • Curray, JR, 2002, Unintermitting Chapman Conference one - Ocean Interactions within the East Asian Marginal Seas , Tectonics and History off the Andaman Sea Area summarized
  • Paul, J., Burgmann, R., Gaur, V.K., Bilham, R. Larson, K. Mr., Ananda, Mr. B., Jade, S., Mukal, Mr., Anupama, T.S. Satyal, G., KUMAR, D. 2001 The motion and activates deformation India off. Geophys. Abstr. Lett. Vol. 28, No 04, 647-651 2001.

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