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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Geodynamic controls on giant metallogenic provinces: Insights from gold provinces in southeast Australia
verfasst von : I. M. A. Vos, F. P. Bierlein, P. S. Heithersay, G. S. Lister
Erschienen in: Mineral Deposit Research: Meeting the Global Challenge
Verlag: Springer Berlin Heidelberg
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The geodynamic processes that control large-scale accumulations of ore are poorly understood. It has commonly been suggested that massive ore deposits are generated through a combination of factors in the Earth’s system. In the Lachlan Fold Belt of southeastern Australia, world-class orogenic gold and porphyry gold-copper deposits formed simultaneously at_~440 Ma in distinct tectonic settings. The driving mechanism that controlled the extraordinary temporal coincidence of these deposits remains largely unexplained. We propose that the interplay of a mega-subduction system and mantle processes could explain the generation of the giant_~440 Ma gold deposits and related metallogenic, tectonic, magmatic and sedimentary events elsewhere in Australia.