APPENDIX I OF GEOLOGICAL AND GEOMORPHOLOGICAL SIGNIFICANCE SITE SIGNIFICANCE FEATURES One of the best exposures of the Mitchell River Gorge upper units of the Avon River group of between Cobbannah Creek sediments, and contains several fossil sites. & Raymond Creek The gorge is a prominent feature which displays the characteristic incised nature of the major south-flowing river of Victoria. Sandy Creek State Representative section displaying the lithology of the upper members of the Tabberabbera Formation exposed in Sandy Creek and its tributaries. Includes rich fossil sites. Part of a site displaying varying lithology Tabberabbera and often complex structure, including (part) representative sedimentary sequences of the Tabberabbera Formation and Wentworth Group, intrusive dykes and features of geomorphological interest. The Wellington rhyolites are also well exposed in the bed of the Mitchell River at the slalom rapids. Den of Nargun Local The Den of Nargun, in the gorge of Woolshed was created by erosion of mudstone beneath more resistant sandstone. Small caves commonly occur in the Upper Devonian Lower Carboniferous – sediments of the Mitchell River Area. The Den is the largest known example and is of particular significance for its decoration. Source: - Williams et al. (1981).
APPENDIX I OF GEOLOGICAL AND GEOMORPHOLOGICAL SIGNIFICANCE SITE SIGNIFICANCE FEATURES Mitchell River Gorge between Cobbannah Creek & Raymond Creek One of the best exposures of the upper units of the Avon River group of sediments, and contains several fossil sites. The gorge is a prominent feature which displays the characteristic incised nature of the major south-flowing river of Victoria. Sandy Creek State Representative section displaying the lithology of the upper members of the Tabberabbera Formation exposed in Sandy Creek and its tributaries. Includes rich fossil sites. Tabberabbera (part) Part of a site displaying varying lithology and often complex structure, including representative sedimentary sequences of the Tabberabbera Formation and Wentworth Group, intrusive dykes and features of geomorphological interest. The Wellington rhyolites are also well exposed in the bed of the Mitchell River at the slalom rapids. Den of Nargun Local The Den of Nargun, in the gorge of Woolshed was created by erosion of mudstone beneath more resistant sandstone. Small caves commonly occur in the Upper Devonian – Lower Carboniferous sediments of the Mitchell River Area. The Den is the largest known example and is of particular significance for its decoration. Source: - Williams et al. (1981).
Mitchell-River-National-Park-Management-Plan-accessible-version.docx