Northern Australia

Northern Australia
Area

The term Northern Australia includes Queensland and the Northern Territory (NT). The part of Western Australia (WA) north of latitude 26° south—a definition widely used in law and State government policy—is also usually included. The 26th Parallel also defines the southern border of the NT, whereas much of the southern border of Queensland is defined by 29° south.

Although it comprises about half of the total area of Australia, Northern Australia includes only about one quarter of the Australian population. However, it includes several sources of Australian exports, being coal from the Great Dividing Range in Queensland/New South Wales and the natural gas and iron ore of the Pilbara region in WA. It also includes major natural tourist attractions, such as Uluru (Ayers Rock), the Great Barrier Reef and the Kakadu National Park.

Almost all of Northern Australia is a huge ancient craton that has not experienced geological upheaval since the end of the Precambrian. The only exception to this generalisation is the Wet Tropics of northern Queensland, where active volcanoes have been present as recently as the .

The vast craton in the north and west contains a number of quite rugged mountain ranges, of which the highest are the MacDonnell and Musgrave Ranges on the southern border of the Northern Territory. These rise to over 1,500 metres (4,900 ft), but the most spectacular features are the deep gorges of rivers such as the Finke. Most of the craton, however, is distinctly flat and generally low-lying with an average elevation of around 400 metres (1,300 ft), whilst in the Lake Eyre Basin most of the land is not far above sea level.

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