Journal article

Geochronological, geochemical and Pb isotopic compositions of Tasmanian granites (southeast Australia): Controls on petrogenesis, geodynamic evolution and tin mineralisation

Wei Hong, David R Cooke, David L Huston, Roland Maas, Sebastien Meffre, Jay Thompson, Lejun Zhang, Nathan Fox

Gondwana Research | Elsevier | Published : 2017

Abstract

Large volumes of Devonian-Carboniferous granites were emplaced across Tasmania in southeast Australia, which was along the easternmost boundary of mid-Palaeozoic Gondwana. Some of these granites are associated with world class Sn–W deposits. Previous studies have focused mainly on relationships between granite petrogenesis and source rocks, and rarely on geochemical controls on Sn mineralisation. New zircon U-Pb ages of 405 to 396 Ma reveal that the George River Granodiorite, Grant Point Granite and Mt. Pearson Granite from eastern Tasmania intruded prior to the Tabberabberan Orogeny. The Coles Bay Granite has a U-Pb age of 388 ± 7 Ma, implying that it was emplaced simultaneously with the Ta..

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University of Melbourne Researchers

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Funding Acknowledgements

This study was financially supported by the ARC Centre of Excellence in Ore Deposits (CODES) and the ARC funded Industrial Transformation Research Hub for Transforming the Mining Value Chain, with some external analytical work supported by Geoscience Australia. The senior author (WH) gratefully acknowledges a PhD scholarship from CODES and University of Tasmania. Travis Holmes is thanked for providing drill hole samples of the Meredith Granite. We thank James Xie from Huanglong Mining Ltd. who allowed us to take drill hole samples of the Red Heemskirk Granite, Evan Orovan, Erin Lawlis, Stephanie Sykora, Angela Escolme, Chengbiao Leng, Wenbo Li, Jing Chen, Aleksandr Stepanov and Wasim Hashmi helped WH assisted with mapping and sampling in the field. This manuscript is significantly benefited by the constructive comments from two anonymous reviewers. Their contributions and the editorial handling by Associated Editor Franco Pirajno are greatly appreciated.