The great Ice Age at Bacchus Marsh
Scratched Rock Dragged along embedded in a glacier 285 million years ago this rock has been scratched by other rocks. Rocks with this striated feature are found around Bacchus Marsh. This specimen is from the Lerderderg River below Lerderderg Gorge.
By Roger Pierson (Geologist)
Our planet looked very different some 285 million years ago than it does now. Back then, a huge land mass, Gondwana, filled the southern hemisphere ocean. Much of the vast land was covered by a thick ice sheet. This was the great ice age.
What is the evidence around Bacchus Marsh that indicates involvement in this great ice age?
The original sandstone in this court house in Main Street Bacchus Marsh was built in 1858 with sandstone from Matson’s Quarry at Bald Hill. This sandstone was formed from tillite deposited by a series of continental glaciers 285 million years ago.
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