Geology and Fossils of Cape Enrage
The fossils at Cape Enrage are contained in the layers of sedimentary rock approximately 320 million years old.
They have all been transported from elsewhere, with an abundance of plant trunk fossils washed downstream and trapped along the the river channels in 'log jam-ups' along the sides of large river channels.
A diverse flora exists exists at the Cape Enrage site, with lowland plants, including beautifully preserved giant horsetail-like trees called Calamites, and classic lycopsid bark and roots. An abundance of frond stems with ropey bark textures and large branch knots are also well preserved at the site. Small invertebrate trackways are also present. These trackways have classically been assigned to millepedes, however horseshoe crabs may also produce similar traces.
The cliff section displays predominantly river dominated sediments. Multiple sandstone and mudstone infilled river channels can be seen in cross section, and where exposed, spectacular rippled surfaces can be found.