Lithogeochemistry of Meso- and Neoproterozoic mafic-ultramafic rocks from northern Guangxi

Jin Cheng Zhou*, Xiao Lei Wang, Jian Sheng Qiu, Jian Feng Gao

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    Meso- and Neoproterozoic mafic-ultramafic rocks from northern Guangxi have been dominantly classified as calc-alkaline series. The mafic rocks have Nb/Lapm = 0. 13 ∼ 0. 51, Th/Lapm = 0. 85 ∼ 3. 3, Ti/Ti° = 0. 29 ∼ 0. 61 and show negative Nb and Ti anomalies in primitively mantle normalized patterns. The Meso-proterozoic mafic rocks share lower εNd (t) than those of Neoproterozoic, i. e. - 1. 99 ∼ - 5. 13 vs. - 0. 74 ∼ 2.4 respectively. They together show geochemical features of island arc volcanic series and thought to be the products of magmatism of convergent plate boundary rather than derived from mantle plume. Therefore, they be couldn't considered as a indicator of breakup of Rodinia supercontinent.

    Original languageEnglish
    Pages (from-to)9-18
    Number of pages10
    JournalActa Petrologica Sinica
    Volume19
    Issue number1
    Publication statusPublished - 2003

    Keywords

    • Lithogeochemistry
    • Mafic-ultramafic rocks
    • Meso- and Neoproterozoic
    • Northern Guangxi

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