Indo-Australian Plate

The Indo-Australian Plate is a major tectonic plate that includes the continent of Australia and surrounding ocean, and extends northwest to include the Indian subcontinent and adjacent waters. It was formed by the fusion of Indian and Australian plates approximately 43 million years ago.[1] The fusion happened when the mid-ocean ridge in the Indian Ocean, which separated the two plates, ceased spreading.[2]

In orange and red is the Indo-Australian plate, shown as divided between the Indian Plate and the Australian Plate

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