C. Gaina, R. D. Müller, B. Brown and T. Ishihara: Microcontinent formation around Australia in Geological Society of Australia Special Publication 22, 2001 page 400 405 The East Tasman Plateau is separated from the island of Tasmania by 100 kilometers of deeper water, and the East Tasman Saddle is a higher ridge connecting the plateau to the Freycinet Peninsula region of the Tasmanian East Coast.