On December 26 , 2004 , a large portion of the boundary between the Burma Plate and the Indian Plate slipped , causing the 2004 Indian Ocean earthquake and tsunami . This megathrust earthquake had an estimated moment magnitude of 9.1 – 9.3 . Over 1600 km of the boundary underwent thrust faulting and shifted up to 5 meters vertically and 11 meters horizontally . This rapid rise in the sea floor over such a short time ( seven minutes ) generated a massive tsunami that killed approximately 229,800 people along the coast of the Indian Ocean
2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
Burma Plate