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Plate Driven Extension And Convergence Along The East Gondwana Active Margin: Late Silurian–Middle Devonian Tectonics Of The Lachlan Fold Belt, Southeastern Australia, Christopher L. Fergusson
Plate Driven Extension And Convergence Along The East Gondwana Active Margin: Late Silurian–Middle Devonian Tectonics Of The Lachlan Fold Belt, Southeastern Australia, Christopher L. Fergusson
Faculty of Science - Papers (Archive)
The Lachlan Fold Belt of southeastern Australia developed along the Panthalassan margin of East Gondwana. Major silicic igneous activity and active tectonics with extensional, strike-slip and contractional deformation have been related to a continental backarc setting with a convergent margin to the east. In the Early Silurian (Benambran Orogeny), tectonic development was controlled by one or more subduction zones involved in collision and accretion of the Ordovician Macquarie Arc. Thermal instability in the Late Silurian to Middle Devonian interval was promoted by the presence of one or more shallow subducted slabs in the upper mantle and resulted in widespread silicic …