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    Was there a Cambrian ocean in South China? – Insight from detrital provenance analyses

    Access Status
    Fulltext not available
    Authors
    Yao, Weihua
    Li, Zheng-Xiang
    Li, W.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Yao, W. and Li, Z. and Li, W. 2015. Was there a Cambrian ocean in South China? – Insight from detrital provenance analyses. Geological Magazine. 152 (1): pp. 184-191.
    Source Title
    Geological Magazine
    DOI
    10.1017/S0016756814000338
    ISSN
    00167568
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/39545
    Collection
    • Curtin Research Publications
    Abstract

    We use detrital provenance data from Cambrian sandstones to examine whether the Yangtze and Cathaysia blocks in South China were separated by an ocean during the Cambrian period. Zircons from the Cambrian sandstones exhibit a dominant ~800 Ma age peak in the central Yangtze Block, being sourced from the western Yangtze Block, whereas a ~980 Ma peak dominates in the northwestern Cathaysia Block, being sourced from an exotic continent once connected to Cathaysia. A mixed provenance with both age peaks is found in Cambrian sandstones from the southeastern Yangtze Block, indicating that detritus can travel from the Cathaysia Block to the Yangtze Block, and therefore arguing against the existence of a broad Cambrian ocean.

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