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    A Geochemical Proxy for Recognizing Sequence Stratigraphic Surfaces in Late Cretaceous Sediments of Ariyalur Area, Cauvery Basin, South India

    Access Status
    Fulltext not available
    Authors
    Nagendra, R.
    Bakkiaraj, D.
    Nagarajan, Ramasamy
    Reddy, A.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Nagendra, R. and Bakkiaraj, D. and Nagarajan, R. and Reddy, A.N. 2010. A Geochemical Proxy for Recognizing Sequence Stratigraphic Surfaces in Late Cretaceous Sediments of Ariyalur Area, Cauvery Basin, South India. Gondwana Geological Magazine. 12: pp. 225-230.
    Source Title
    Gondwana Geological Magazine
    ISSN
    0970-261X
    School
    Curtin Sarawak - Faculty Office
    URI
    http://hdl.handle.net/20.500.11937/22717
    Collection
    • Curtin Research Publications
    Abstract

    The geochemical tool is employed to recognize the sequence stratigraphic surfaces of the Campanian-Maastrichtian sediments of the Ariyalur area in the Cauvery Basin. The Sillakkudi Formation (Campanian) underlies the Kallankurichchi Formation of Maastrichtian age. The sequence stratigraphic surfaces are recognised by employing the major and trace elements. The high ratio of Mn/Al concentrations confirms the relative rise of sea-level and the Mn Maxima coincides with biostromal limestone, which marks the MFS in the outcrop section. The TST and MFS in both Sillakkudi and Kallankurichchi Formations are recognized by the positive digressions in Ti/Al. The sequence boundaries are identified based on the low trends Ti/Al and Zr/Al chemical contents. The high Ti/Al ratios in the Sillakkudi sandstone are derived from the increased siliciclastic supply, and the low values of Ti/Al in the Maastrichtian limestones are derived from the non-siliciclastic supply.

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