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    Caldera-like features located over the Panikkar Seamount and adjacent regions in the Laxmi Basin, eastern Arabian Sea

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    J_Ear_Syst_Sci_131_44a.pdf (901.4Kb)
    Date
    2022
    Author
    Savio, J.J.
    Yatheesh, V.
    Sheldon, R.
    Kallathian, M.
    Kessarkar, P.M.
    Kumar, Kuldeep
    Mahesh, P.
    Mishra, Subhashree
    Verma, Swati
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    Abstract
    The Laxmi Basin, which is believed to have been formed by the divergence between India and the Laxmi Ridge, contains a seamount chain consisting of the Raman Seamount, Panikkar Seamount and the Wadia Guyot in its axial region. Some authors considered that these seamounts are underlain by stretched continental crust, while others attributed the genesis of these seamounts to an anomalous episode of volcanism resulting from the interaction of the Rèunion hotspot with the extinct spreading centre. In the absence of any direct evidence to these contradicting views, we carried out a detailed multibeam bathymetry survey over a selected sector of this seamount chain and collected a fresh set of high-resolution bathymetry data. Our analysis of this bathymetry data reveals the presence of six semicircular scarp faces enclosing nearly flat seafloor over the Panikkar Seamount, with their morphology resembling with the shape of volcanic calderas. Based on the presence of these caldera-like features, in conjunction with the constraints of plate tectonic framework of this region, we corroborate the volcanic origin for the seamount chain located in the axial part of the Laxmi Basin
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    https://doi.org/10.1007/s12040-021-01797-7
    https://drs.nio.org/drs/handle/2264/8839
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