The Paleoproterozoic diorite dykes in the southern margin of the North China Craton: Insight into rift-related magmatism

Changming Wang, Yongjun Lu, X. He, Q. Wang, J. Zhang

    Research output: Contribution to journalArticle

    26 Citations (Scopus)

    Abstract

    © 2016 Elsevier B.V.. The Xiong'er rift zone along the southern margin of the North China Craton (NCC) is characterized by exposure of a suite of volcanic rocks and associated mafic - intermediate dykes and sedimentary rocks. In this study, we report for the first time the newly identified late Paleoproterozoic diorite dykes from the Waifangshan Mountain in the Xiong'er rift zone and present results from the LA-ICP-MS zircon U-Pb dating, Sr-Nd-Hf isotope systematics, and whole-rock major and trace element geochemistry. The Wafang diorite dykes intruding into the upper part of the Xiong'er Group yielded emplacement mean ages of 207Pb/206Pb from 1746 ± 22 Ma to 1762 ± 11 Ma. These diorite dykes have extreme low MgO, Cr and Ni contents, and enriched in LREEs and LILEs but depleted in HFSEs (Nb, Ta, and Ti). They are characterized by having negative zircon eHf(t) values of -11.4 to -3.1, a whole-rock initial 87Sr/86Sr value of 0.70196 and eNd(t) value of -8.7, and Pb isotopes (206Pb/204Pb = 16.072-16.295, 207Pb/204Pb = 15.275-15.293, 208Pb/204Pb = 36.538-37.255). These geochemical features, together with trace element modeling, suggest that the late Paleoproterozoic Wafang diorite dykes could be sourced from crustal melting with minor contribution of the mixing of mantle materials. These new data combined with previous studies on the late Paleoproterozoic the Xiong'er volcanism should have lasted for nearly 43 Ma ranging from 1789 Ma to 1746 Ma. Correspondingly, the initiation timing of the Xiong'er rift should be younger than 1831 Ma, but earlier than 1625. The Wafang diorite dykes formed in a rift environment, possibly related to breakup of the supercontinent Columbia.
    Original languageEnglish
    Pages (from-to)26-46
    JournalPrecambrian Research
    Volume277
    DOIs
    Publication statusPublished - 2016

    Fingerprint

    Trace Elements
    diorite
    Isotopes
    craton
    magmatism
    Rocks
    Volcanic rocks
    Sedimentary rocks
    Geochemistry
    rift zone
    Melting
    zircon
    trace element
    isotope
    supercontinent
    rock
    sedimentary rock
    volcanism
    volcanic rock
    emplacement

    Cite this

    @article{d1d820b1454c42bf8b585ed23b509cde,
    title = "The Paleoproterozoic diorite dykes in the southern margin of the North China Craton: Insight into rift-related magmatism",
    abstract = "{\circledC} 2016 Elsevier B.V.. The Xiong'er rift zone along the southern margin of the North China Craton (NCC) is characterized by exposure of a suite of volcanic rocks and associated mafic - intermediate dykes and sedimentary rocks. In this study, we report for the first time the newly identified late Paleoproterozoic diorite dykes from the Waifangshan Mountain in the Xiong'er rift zone and present results from the LA-ICP-MS zircon U-Pb dating, Sr-Nd-Hf isotope systematics, and whole-rock major and trace element geochemistry. The Wafang diorite dykes intruding into the upper part of the Xiong'er Group yielded emplacement mean ages of 207Pb/206Pb from 1746 ± 22 Ma to 1762 ± 11 Ma. These diorite dykes have extreme low MgO, Cr and Ni contents, and enriched in LREEs and LILEs but depleted in HFSEs (Nb, Ta, and Ti). They are characterized by having negative zircon eHf(t) values of -11.4 to -3.1, a whole-rock initial 87Sr/86Sr value of 0.70196 and eNd(t) value of -8.7, and Pb isotopes (206Pb/204Pb = 16.072-16.295, 207Pb/204Pb = 15.275-15.293, 208Pb/204Pb = 36.538-37.255). These geochemical features, together with trace element modeling, suggest that the late Paleoproterozoic Wafang diorite dykes could be sourced from crustal melting with minor contribution of the mixing of mantle materials. These new data combined with previous studies on the late Paleoproterozoic the Xiong'er volcanism should have lasted for nearly 43 Ma ranging from 1789 Ma to 1746 Ma. Correspondingly, the initiation timing of the Xiong'er rift should be younger than 1831 Ma, but earlier than 1625. The Wafang diorite dykes formed in a rift environment, possibly related to breakup of the supercontinent Columbia.",
    author = "Changming Wang and Yongjun Lu and X. He and Q. Wang and J. Zhang",
    year = "2016",
    doi = "10.1016/j.precamres.2016.02.009",
    language = "English",
    volume = "277",
    pages = "26--46",
    journal = "Precambrian Research",
    issn = "0301-9268",
    publisher = "Pergamon",

    }

    The Paleoproterozoic diorite dykes in the southern margin of the North China Craton: Insight into rift-related magmatism. / Wang, Changming; Lu, Yongjun; He, X.; Wang, Q.; Zhang, J.

    In: Precambrian Research, Vol. 277, 2016, p. 26-46.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - The Paleoproterozoic diorite dykes in the southern margin of the North China Craton: Insight into rift-related magmatism

    AU - Wang, Changming

    AU - Lu, Yongjun

    AU - He, X.

    AU - Wang, Q.

    AU - Zhang, J.

    PY - 2016

    Y1 - 2016

    N2 - © 2016 Elsevier B.V.. The Xiong'er rift zone along the southern margin of the North China Craton (NCC) is characterized by exposure of a suite of volcanic rocks and associated mafic - intermediate dykes and sedimentary rocks. In this study, we report for the first time the newly identified late Paleoproterozoic diorite dykes from the Waifangshan Mountain in the Xiong'er rift zone and present results from the LA-ICP-MS zircon U-Pb dating, Sr-Nd-Hf isotope systematics, and whole-rock major and trace element geochemistry. The Wafang diorite dykes intruding into the upper part of the Xiong'er Group yielded emplacement mean ages of 207Pb/206Pb from 1746 ± 22 Ma to 1762 ± 11 Ma. These diorite dykes have extreme low MgO, Cr and Ni contents, and enriched in LREEs and LILEs but depleted in HFSEs (Nb, Ta, and Ti). They are characterized by having negative zircon eHf(t) values of -11.4 to -3.1, a whole-rock initial 87Sr/86Sr value of 0.70196 and eNd(t) value of -8.7, and Pb isotopes (206Pb/204Pb = 16.072-16.295, 207Pb/204Pb = 15.275-15.293, 208Pb/204Pb = 36.538-37.255). These geochemical features, together with trace element modeling, suggest that the late Paleoproterozoic Wafang diorite dykes could be sourced from crustal melting with minor contribution of the mixing of mantle materials. These new data combined with previous studies on the late Paleoproterozoic the Xiong'er volcanism should have lasted for nearly 43 Ma ranging from 1789 Ma to 1746 Ma. Correspondingly, the initiation timing of the Xiong'er rift should be younger than 1831 Ma, but earlier than 1625. The Wafang diorite dykes formed in a rift environment, possibly related to breakup of the supercontinent Columbia.

    AB - © 2016 Elsevier B.V.. The Xiong'er rift zone along the southern margin of the North China Craton (NCC) is characterized by exposure of a suite of volcanic rocks and associated mafic - intermediate dykes and sedimentary rocks. In this study, we report for the first time the newly identified late Paleoproterozoic diorite dykes from the Waifangshan Mountain in the Xiong'er rift zone and present results from the LA-ICP-MS zircon U-Pb dating, Sr-Nd-Hf isotope systematics, and whole-rock major and trace element geochemistry. The Wafang diorite dykes intruding into the upper part of the Xiong'er Group yielded emplacement mean ages of 207Pb/206Pb from 1746 ± 22 Ma to 1762 ± 11 Ma. These diorite dykes have extreme low MgO, Cr and Ni contents, and enriched in LREEs and LILEs but depleted in HFSEs (Nb, Ta, and Ti). They are characterized by having negative zircon eHf(t) values of -11.4 to -3.1, a whole-rock initial 87Sr/86Sr value of 0.70196 and eNd(t) value of -8.7, and Pb isotopes (206Pb/204Pb = 16.072-16.295, 207Pb/204Pb = 15.275-15.293, 208Pb/204Pb = 36.538-37.255). These geochemical features, together with trace element modeling, suggest that the late Paleoproterozoic Wafang diorite dykes could be sourced from crustal melting with minor contribution of the mixing of mantle materials. These new data combined with previous studies on the late Paleoproterozoic the Xiong'er volcanism should have lasted for nearly 43 Ma ranging from 1789 Ma to 1746 Ma. Correspondingly, the initiation timing of the Xiong'er rift should be younger than 1831 Ma, but earlier than 1625. The Wafang diorite dykes formed in a rift environment, possibly related to breakup of the supercontinent Columbia.

    U2 - 10.1016/j.precamres.2016.02.009

    DO - 10.1016/j.precamres.2016.02.009

    M3 - Article

    VL - 277

    SP - 26

    EP - 46

    JO - Precambrian Research

    JF - Precambrian Research

    SN - 0301-9268

    ER -