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    Magnetic expression of some major lineaments and cretaceous quiet zone in the Bay of Bengal

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    Geo-Mar_Lett_17_202.pdf (318.9Kb)
    Date
    1997
    Author
    Subrahmanyam, A.S.
    Murthy, K.S.R.
    Lakshminarayana, S.
    Rao, M.M.M.
    Venkateswarlu, K.
    Rao, T.C.S.
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    Abstract
    Magnetic data over the eastern continental margin of India and adjacent Bengal fan demarcate two major lineaments. A high amplitude N - S trending lineation of the Cauvery offshore Basin corresponds to the offshore fragment of the 80 degrees Elineament recorded onland. A N - S lineation of very high amplitude anomaly off Chilka lake considered as the possible northward extension of the 85 degrees E ridge delineated, hitherto in Bengal Fan. A subduced magnetic anomaly zone is demarcated seaward of the continent-ocean boundary (COB) in the Bengal Fan. Over the northern Bengal Fan this zone is delineated east of 85 degrees E lineation. This quiet zone might have evolved during the Early Cretaceous period of normal magnetic polarity between MO and 34 (120 - 84 Ma) anomalies
    URI
    http://drs.nio.org/drs/handle/2264/2044
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