Glossary of Key Terms

Alluvial Plain - Large area of flat terrain formed from the deposition of 'alluvium'.

Alluvium - Clay, silt, sand and gravel sediments deposited by rivers and streams and other forms of running water.     

Riverine Plain - Large alluvial plain located in the eastern sector of the Murray-Basin formed from sediments eroded from the Great Dividing Ranges 

Palaeozoic Era - The Palaeozoic Era represents a period of time in the earth's development defined within the Geological Time Scale. The Era commenced at the beginning of the Cambrian period about 570 million years ago and lasted until the end of the Permian period some 240 million years ago. The sandstones and slates of Central Victoria were deposited in a deep sea that existed throughout South Eastern Australia during the Palaeozoic Era.    

Kaolin - Kaolin is a clay formed from the chemical weathering of other rocks. Extensive chemical weathering has altered the uppermost sections of the undulating upper catchment terrain. Much of the original structure and mineral composition of the rock has been lost and replaced with kaolin rich silt/silty clay that has a pale bleached appearance.