The Indian plate is a minor tectonic plate straddling the equator in the Indian Ocean. Originally a part of the ancient continent of Gondwana, the Indian plate broke away from the other fragments of Gondwana 100 million years ago and began moving north, carrying Insular India (Now called South Asia) with it. It was once fused with the adjacent Australian plate to form a single Indo-Australian plate, but recent studies suggest that India and Australia may have been separate plates for at least 3 million years. The Indian plate includes most of modern South Asia (the Indian subcontinent) and a portion of the basin under the Indian Ocean, including parts of Tibet, Sumatra, and extending up to but not including Ladakh, Kohistan, and Balochistan in Pakistan.