Photo of State Circle Shale

Geoscience Australia

Geoscience Australia
Symonston, Australia

This magnificent exposure clearly shows the unconformable contact between the older State Circle Shale (bottom) and the multilayered Camp Hill Sandstone (top). The State Circle Shale comprises the wavy white band of siltstone running through the middle of the picture and the very fine reddish shale below it. These have been strongly contorted by folding, faulting and slumping. Excellent examples of slump rolls can be seen in the sandstone.


  • Title: Photo of State Circle Shale
  • Rights: Geoscience Australia / CC-BY 4.0
  • Photographer: Steven Petkovski

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