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    SIMS U–Pb zircon geochronology of porphyry Cu–Au–(Mo) deposits in the Yangtze River Metallogenic Belt, eastern China: Magmatic response to early Cretaceous lithospheric extension

    Access Status
    Fulltext not available
    Authors
    Li, X.
    Li, W.
    Wang, Xuan-ce
    Li, Q.
    Gao, Y.
    Wu, Fuyuan
    Liu, Y.
    Tang, G.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Li, Xian-Hua and Li, Wu-Xian and Wang, Xuan-Ce and Li, Qiu-Li and Liu, Yu and Tang, Guo-Qiang and Gao, Yu-Ya and Wu, Fu-Yuan. 2010. SIMS U–Pb zircon geochronology of porphyry Cu–Au–(Mo) deposits in the Yangtze River Metallogenic Belt, eastern China: Magmatic response to early Cretaceous lithospheric extension. Lithos. 119 (3-4): pp. 427-438.
    Source Title
    Lithos
    DOI
    10.1016/j.lithos.2010.07.018
    ISSN
    00244937
    School
    Department of Applied Geology
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/503348/description#description. Copyright © 2010 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/16792
    Collection
    • Curtin Research Publications
    Abstract

    The middle-lower reaches of the Yangtze River is one of the most important metallogenic belts in China, hosting numerous Cu–Fe–Au–Mo deposits. Previous chronological and geochemical investigations mostly focused on the magmatic rocks and associated deposits in the lower reaches of the river, but the timing and genesis of the Cu–Au–(Mo) mineralized porphyries in the middle reaches are yet to be well constrained. In this study we carried out precise SIMS U–Pb zircon age determinations for a number of Cu–Au–(Mo) mineralized porphyries and barren granitoid intrusions in the Jiurui and Edong mining districts in the middle reaches of the Yangtze River valley. Our new age results reveal two discrete magmatic and mineralization events at ca. 145–146 Ma and ca. 140 Ma in the study area. The ca. 145–146 Ma granitoids signify the start of the Cretaceous magmatism in the Yangtze River Metallogenic Belt, coinciding temporally with a regional tectonic switching from a Late Jurassic transpressive tectonic regime to an earliest Cretaceous extensional regime in eastern China.

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