Wortupa Quartzite ripple rocks and mud cracks: Arkaroola

Ripple marks, mud cracks and rain drop imprints indicate a shallow aquatic environment when the sediments of the Wortupa Quartzite formation were deposited around 790 million years ago.

Large amplitude ripple marks embedded into a 1x2m platform
Mudcracks (approximately 5mm thick) with sand infilling, in the Wortupa Quartzite formation

For more information on how to locate this site, see Geological Field Excursion Guides.