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Was formed by layers of sand piling up over millions of years. Weather beat the sand into a tough rock
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Wilson's promontory was formed about 12 000 years ago when the sea level was 6 metres higher. This sea level then dropped letting sand dunes form on a Basalt Base creating a land bridge to Tasmania. The sea level then rose again creating Wilson's promontory.
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The Blue Mountains were formed by the immense pressure from the land to the East which caused the ground to buckle and fold forming an elevation of 3000ft in total.
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Mt warning was formed 23 million years ago when a volcano erupted. The central hole of the volcano then cooled forming a mountain.
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Mt Koscuiosco was formed when two continental boundaries pushed into eachother and buckled, causing the ground to rise upwards, forming Mt Koscuiosco.
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Mt Bartle Frere was formed when a volcano eroded leaving a granite core behind
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The Nullabor Plains were once a shallow sea bed. The water then lowered creating a plain. The limestone seabed has a reputation as good quality limestone.
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The Glasshouse Mountains were formed when the lava in a lava from a volcano hardened and cooled forming a range of mountains
