PHOTOGRAPHER: Grant Dixon
A major geological deformation event affecting Tasmania occurred about 520 million years ago. It was the result of a tectonic collision between the continent that this part of Tasmania was then a part, moving east, and a westward-moving volcanic island arc. Scenically-spectacular examples of the folding produced in rocks by this event are well-exposed on the Tarkine coast. The sandstone and conglomerate beds here comprise a turbidite sequence, deposited as density flows in a marine environment some 100 million years before they were folded. It is hard not to be impressed by the convoluted folds in these rocks and the jagged forms into which they have been shaped by eons of relentless westerly storms.