Engineering geological evolution of the Jolimont Valley, Melbourne, Victoria

Recent investigations within central Melbourne for a number of projects have provided new subsurface information across the width of the Jolimont Valley, a buried valley roughly aligned with the present day course of the Yarra River. Quaternary erosion and deposition have lead to a complex sequence of sediments with incised paleochannels and interbedded lava flows. This paper uses recently acquired subsurface information to present an evolutionary geological model for the Jolimont Valley. The evolution of the valley is described in terms of its depositional history correlated with global and local sea levels and estimated stress changes within the materials infilling the valley.