Neoproterozoic To Early Carboniferous
This period is covered by the recent Geological Survey of Victoria publication The Tasman Fold Belt System in Victoria. The sequence of events associated with the building of southeastern Australia reveals that mineralization and magmatic processes are intimately linked with the tectonic development of the region. The history is dominated by east-west compression of predominantly oceanic sedimentary and igneous rocks and their resultant folding, faulting and uplift. Recently, it has become increasingly apparent that major north-south movements have also been involved in constructing eastern Australia.
The Palaeozoic basement is traversed by thrust faults more or less parallel to the north-south structural grain. The largest faults separate rocks with different ages and structural histories, and subdivide Victoria into three main structural rankings consisting of twofold belts (Delamerian and Lachlan), two terranes in the Lachlan Fold Belt (Whitelaw and Benambra), and ten structural zones (Glenelg, Grampians-Stavely, Stawell, Bendigo, Melbourne, Tabberabbera, Omeo, Deddick, Kuark, Mallacoota).
Read more about this topic: Geology Of Victoria
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