Australian Shield
Quick Summary
The Australian Shield, also known as the Western Shield or Craton, is a vast geological area covering the western half of the Australian continent. It is composed of some of the oldest rocks on Earth, dating back billions of years. This ancient shield has been significantly eroded over time, resulting in a landscape of low relief.1
The shield is characterized by a network of fractures called lineaments, which divide the area into large blocks. These blocks can be uplifted into highlands or depressed into lowlands and basins. The nature of the land surface within these blocks varies depending on the type of rock outcrops, leading to diverse landforms such as plateaus, mesas, buttes, and rugged hills.2
While much of the Western Plateau is arid and desert-like, it also contains significant mineral wealth, including iron ore, nickel, and bauxite. The geological history of the Australian Shield is a key part of understanding the continent's overall tectonic framework.2341
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