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Basic geological regions of Australia, by age. The geology of Australia includes virtually all known rock types, spanning a geological time period of over 3.8 billion years, including some of the oldest rocks on earth. Australia is a continent situated on the Indo-Australian plate.
Western Australia is the largest state, covering just under one third of the Australian landmass, followed by Queensland, South Australia, and New South Wales. Australia also has several minor territories; the federal government administers a separate area within New South Wales, the Jervis Bay Territory , as a naval base and seaport for the ...
Lists of landforms of Australia (6 C, 8 P) A. Archipelagoes of Australia (5 C, 7 P) B. Bodies of water of Australia (19 C, 4 P) C. Canyons and gorges of Australia (3 ...
Landforms of the Australian Capital Territory (6 C, 6 P) C. Landforms of the Cocos (Keeling) Islands (1 C, 2 P) H. Landforms of Heard Island and McDonald Islands (4 C ...
The Commonwealth of Australia comprises the mainland of the Australian continent, the major island of Tasmania, other nearby islands, and various external territories. [1] Neighbouring countries are Indonesia , East Timor , and Papua New Guinea to the north, the Solomon Islands , Vanuatu , and New Caledonia to the north-east, and New Zealand to ...
A 7-kilometre (4.3 mi) diameter circular topographic feature is clearly visible on satellite images of the Bungle Bungle Range. [3] It is believed that this feature is the eroded remnant of a very ancient meteorite impact crater and is known as the Piccaninny crater .
Instead, the Australian Alps consist of a high plateau, with significantly softer rolling hills spread across a long, wide plateau that was lifted thousands of feet up by the movement of magma when Gondwana began to break up between 130 and 160 million years ago. The highest peak in the Australian Alps is Mount Kosciuszko (2,228 metres (7,310 ft)).
Australia separated from Gondwana 99 Ma, and initially remained warm and humid with rainforest vegetation. Inland Australia had systems of rivers and lakes with abundant wildlife. Fossil birds, platypus, frogs and snakes are present from this period. From 30 Ma there was a period of global cooling, and from 15 Ma the Antarctic ice sheet formed.