Indo-Australian Plate
In models of the reconstructed tectonic history of the area, the generally northwards movement of the Indo-Australian Plate resulted in its substantive collision with the Eurasian continent, which began during the Eocene epoch, approximately 50–55 million years ago (Ma). This collision with Asia began the orogenic uplift which has formed the Himalaya mountains, as well as the fracturing of the Indo-Australian plate into the modern Indian Plate, Australian Plate, and possibly Capricorn Plate.