Geochemical and Sm-Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India: Implications for provenance, and contemporary basin tectonics

S. De, R. Mazumder, Tohru Ohta, E. Hegner, K. Yamada, T. Bhattacharyya, J. Chiarenzelli, W. Altermann, M. Arima

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    In significant contrast to other cratonic blocks of India, the Singhbhum cratonic successions record continuous depositional record from the Palaeoarchaean to Mesoproterozoic. Although the sedimentary facies characteristics and mode of stratigraphic sequence building of the Dhanjori and Chaibasa Formations are well known, sedimentary geochemistry, provenance and tectonic milieu of deposition of these two formations are hitherto unknown. The current manuscript presents geochemical and Sm-Nd isotopic data from the Dhanjori and Chaibasa Formations for the first time and combine previous sedimentological data with the goal to expand the framework for understanding the depositional and tectonic setting of these two formations. The Sm-Nd isotopic data for the Chaibasa clastics is unambiguous with respect to provenance. Average e{open}Nd (t=2.2Ga)=-0.8±1.0 and average Nd model age (TDM)=2.51±0.08Ga with average 147Sm/144Nd ratios=0.1114±0.0041 for phyllites and quartzites indicate an extremely homogeneous source signature consistent with a late Archaean "juvenile" crustal provenance, possibly a dominantly upper crustal provenance. The Sm-Nd isotopic data from the older Dhanjori Formation also indicate broadly similar provenance as comparable lithologies in the younger Chaibasa Formation. Our Sm-Nd isotopic data is entirely consistent with the previous sedimentological data and confirms a terrestrial, rift-dominated tectonic setting for the Dhanjori Formation (proximal sources, poorly mixed provenance) and a marginal marine to offshore setting for the more homogeneous Nd isotopic signature of the Chaibasa Formation (distal sources, well mixed provenance).

    Original languageEnglish
    Pages (from-to)62-78
    Number of pages17
    JournalPrecambrian Research
    Volume256
    DOIs
    Publication statusPublished - 2015 Jan 1

    Fingerprint

    metasedimentary rock
    Tectonics
    provenance
    craton
    Archean
    Rocks
    tectonics
    basin
    Time division multiplexing
    Geochemistry
    Lithology
    tectonic setting
    lithology
    geochemistry

    Keywords

    • Palaeoclimate
    • Palaeoproterozoic
    • Provenance
    • Sediment geochemistry
    • Singhbhum
    • Tectonics

    ASJC Scopus subject areas

    • Geochemistry and Petrology
    • Geology

    Cite this

    Geochemical and Sm-Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India : Implications for provenance, and contemporary basin tectonics. / De, S.; Mazumder, R.; Ohta, Tohru; Hegner, E.; Yamada, K.; Bhattacharyya, T.; Chiarenzelli, J.; Altermann, W.; Arima, M.

    In: Precambrian Research, Vol. 256, 01.01.2015, p. 62-78.

    Research output: Contribution to journalArticle

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    abstract = "In significant contrast to other cratonic blocks of India, the Singhbhum cratonic successions record continuous depositional record from the Palaeoarchaean to Mesoproterozoic. Although the sedimentary facies characteristics and mode of stratigraphic sequence building of the Dhanjori and Chaibasa Formations are well known, sedimentary geochemistry, provenance and tectonic milieu of deposition of these two formations are hitherto unknown. The current manuscript presents geochemical and Sm-Nd isotopic data from the Dhanjori and Chaibasa Formations for the first time and combine previous sedimentological data with the goal to expand the framework for understanding the depositional and tectonic setting of these two formations. The Sm-Nd isotopic data for the Chaibasa clastics is unambiguous with respect to provenance. Average e{open}Nd (t=2.2Ga)=-0.8±1.0 and average Nd model age (TDM)=2.51±0.08Ga with average 147Sm/144Nd ratios=0.1114±0.0041 for phyllites and quartzites indicate an extremely homogeneous source signature consistent with a late Archaean {"}juvenile{"} crustal provenance, possibly a dominantly upper crustal provenance. The Sm-Nd isotopic data from the older Dhanjori Formation also indicate broadly similar provenance as comparable lithologies in the younger Chaibasa Formation. Our Sm-Nd isotopic data is entirely consistent with the previous sedimentological data and confirms a terrestrial, rift-dominated tectonic setting for the Dhanjori Formation (proximal sources, poorly mixed provenance) and a marginal marine to offshore setting for the more homogeneous Nd isotopic signature of the Chaibasa Formation (distal sources, well mixed provenance).",
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    T1 - Geochemical and Sm-Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India

    T2 - Implications for provenance, and contemporary basin tectonics

    AU - De, S.

    AU - Mazumder, R.

    AU - Ohta, Tohru

    AU - Hegner, E.

    AU - Yamada, K.

    AU - Bhattacharyya, T.

    AU - Chiarenzelli, J.

    AU - Altermann, W.

    AU - Arima, M.

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    AB - In significant contrast to other cratonic blocks of India, the Singhbhum cratonic successions record continuous depositional record from the Palaeoarchaean to Mesoproterozoic. Although the sedimentary facies characteristics and mode of stratigraphic sequence building of the Dhanjori and Chaibasa Formations are well known, sedimentary geochemistry, provenance and tectonic milieu of deposition of these two formations are hitherto unknown. The current manuscript presents geochemical and Sm-Nd isotopic data from the Dhanjori and Chaibasa Formations for the first time and combine previous sedimentological data with the goal to expand the framework for understanding the depositional and tectonic setting of these two formations. The Sm-Nd isotopic data for the Chaibasa clastics is unambiguous with respect to provenance. Average e{open}Nd (t=2.2Ga)=-0.8±1.0 and average Nd model age (TDM)=2.51±0.08Ga with average 147Sm/144Nd ratios=0.1114±0.0041 for phyllites and quartzites indicate an extremely homogeneous source signature consistent with a late Archaean "juvenile" crustal provenance, possibly a dominantly upper crustal provenance. The Sm-Nd isotopic data from the older Dhanjori Formation also indicate broadly similar provenance as comparable lithologies in the younger Chaibasa Formation. Our Sm-Nd isotopic data is entirely consistent with the previous sedimentological data and confirms a terrestrial, rift-dominated tectonic setting for the Dhanjori Formation (proximal sources, poorly mixed provenance) and a marginal marine to offshore setting for the more homogeneous Nd isotopic signature of the Chaibasa Formation (distal sources, well mixed provenance).

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    KW - Palaeoproterozoic

    KW - Provenance

    KW - Sediment geochemistry

    KW - Singhbhum

    KW - Tectonics

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