This information has been developed from the publications:
856476. 38 kilometres north-east of Benambra.
Exposures of Ordovician sediments.
Tom Groggin Track
Extensive exposures of Ordovician sediments occur on the steep north facing slopes of the Mount Gibbo ridge. The ridge provides a marked change in aspect, which has produced distinctive vegetation differences between the northern and southern slopes.
Local. Extensive outcrops of Ordovician sediments are relatively uncommon.
Because of the area covered by the site, the value of the significant geological features is unlikely to be seriously reduced by localised disturbance.