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Western Plateau

geography Maturity 5-7 Next article →

The Western Plateau is a massive geographic region in Australia. It is the largest drainage division on the continent. This means it is a vast area where water flows into specific basins. The plateau is made of ancient geological structures. It consists mostly of the remains of the Gondwana rock shield. This shield is a very old part of the Earth's crust. The plateau covers almost two-thirds of the total land surface of Australia.

This region spans a huge area across several territories. It includes large parts of Western Australia and South Australia. It also covers much of the Northern Territory. The plateau stretches from the Gulf of Carpentaria in the north to Onslow in the west. It also encompasses the coastal cities of Perth and Albany. To understand its scale, consider its size relative to other continents. The Western Plateau is roughly the same size as continental Europe. This comparison spans from Western Poland to Portugal.

The physical landscape of the plateau is quite distinct. Most of the territory is characterized by flat terrain. You will find vast stretches of sandy desert. There are also many areas of stony desert. Because the land is so dry, the plant life is limited. You will see a sparse covering of vegetation. This includes various shrubs and tussock grasses. These plants must survive in a very harsh environment.

Water is a very scarce resource in this drainage division. Rainfall in the Western Plateau is highly unpredictable. While the average rainfall is quoted at 250 mm per year, it varies by area. Surface water is almost always absent from the landscape. You will only see surface water after periods of heavy rain. There are only a handful of permanent waterholes in the region. These waterholes are vital because they are the only reliable sources of water.

The climate of the plateau creates difficult living conditions. This is a primary reason why few people live there. The region experiences a very dry climate. Interestingly, the weather patterns include cold Antarctic winds. These winds blow through the area during the summer months. In contrast, the region experiences steady rainfall during the winter. These shifting weather patterns make the environment quite tough for human habitation.

Geologically, the plateau is tied to significant ancient structures. It is part of the broader Australian Shield. The area contains important geological features like the Pilbara Craton. It also includes the Yilgarn Craton. A craton is an old and stable part of the continental lithosphere. These ancient rock formations define the foundation of the plateau. They are remnants of the massive Gondwana landmass.

The Western Plateau is also home to the Great Victoria Desert. This desert is part of the arid land that defines the region. The relationship between the dry climate and the desert landscape is very strong. The plateau serves as a major component of Australia's physical geography. It connects various states and territories through its vast, ancient terrain. Understanding this plateau helps us understand the scale of the Australian continent.

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