Paleodunes at Barwon Heads

Coastal Hazards

The bluffs of Barwon Heads are aeolian calcarnite — solidified sand dunes. As rain fell on the sand dunes, the top surface is cemented as calcrete. More dunes formed on top, and more, and more, with layers of hardened calcrete topping each set of dunes. Now, those hardened layers act as failure planes, leaving hazardous overhangs.

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