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    InRidge program: Preliminary results from the first cruise

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    Curr_Sci_75_1157.pdf (727.0Kb)
    Date
    1998
    Author
    Mukhopadhyay, R.
    Murthy, K.S.R.
    Iyer, S.D.
    Rao, M.M.M.
    Banerjee, R.
    Subrahmanyam, A.S.
    Shirodkar, P.V.
    Ghose, I.
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    Abstract
    The first cruise under India's own Ridge research initiative, InRidge collected new data on bathymetry, free-air gravity and magnetic anomalies across the ridge axis between the Vema and Zhivago transform faults in the Central Indian Ridge. In addition, basalt and ferro-manganese nodules were collected from the Vityaz transform fault area. Basalts are fresh and phyric, containing plagioclase and olivine phenocrysts. Ferro-mananese nodules from the same areas show smooth textures, variable oxide thicknesses and fresh basaltic nuclei. Preliminary studies indicate a possible mixed hydrothermal and hydrogenous source for these nodules. The water column was also sampled at the Vema and Vityaz transform fault areas.
    URI
    http://drs.nio.org/drs/handle/2264/979
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