Geodynamic controls on giant metallogenic provinces: Insights from gold provinces in southeast Australia

Autor: Gordon S. Lister, P S Heithersay, Frank P. Bierlein, Ivo Maria Antoine Vos
Rok vydání: 2005
Předmět:
Zdroj: Mineral Deposit Research: Meeting the Global Challenge ISBN: 9783540279457
DOI: 10.1007/3-540-27946-6_16
Popis: 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.
Databáze: OpenAIRE