Geology

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Volcanoes in Australia : lava tubes

Volcanoes in Australia Active volcanoes generally occur close to the major tectonic plate boundaries. They are rare in Australia because there are no plate boundaries on this continent. However, there are two active volcanoes located 4000 kilometres south west of Perth in the Australian Antarctic Territory: Heard Island and the nearby McDonald Islands. The other active volcanoes nearest Australia are in Papua New Guinea, New Zealand, Indonesia and the Philippines. Gas-rich sticky magmas dominate the Asia Pacific, making composite volcanoes...