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    Source rock indication from the heavy mineral weight percentages, central Tamil Nadu, India

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    PLACER_2007_75.pdf (807.0Kb)
    Date
    2007
    Author
    Rajamanickam, G.V.
    Chandrasekaran, R.
    Manickaraj, D.S.
    Gujar, A.R.
    Loveson, V.J.
    Chaturvedi, S.K.
    Chandrasekar, N.
    Mahesh, R.
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    Abstract
    From December 2003 to December 2005 beach sand samples have been collected at regular intervals. During this period the event of 26th December, 2004 tsunami enabled us to analyze the impact of the same in the beach sediments particularly heavy mineral distribution. Though much variation in the positive direction is noticed, significant shift in the heavy mineral assemblage could not be recognized. Heavy minerals have been evaluated for the weight percentage distribution in the low tide and high tide zones. The frequency distribution establishes the lack of variations in the heavy mineral assemblages but for the abundancy between low tide and high tide sands. The low gradient in the inner shelf and steep gradient in the beach supported by dunes is observed to have been stalled the devastative force of the tsunami waves and bringing change in the abundancy of heavy minerals.
    URI
    http://drs.nio.org/drs/handle/2264/733
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