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    Geophysical investigations over a segment of the Central Indian Ridge, Indian Ocean

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    Geo-Mar_Lett_17_195.pdf (411.6Kb)
    Date
    1997
    Author
    KameshRaju, K.A.
    Ramprasad, T.
    Subrahmanyam, C.
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    Abstract
    Swath bathymetric, gravity, and magnetic studies were carried out over a 55 km long segment of the Central Indian Ridge. The ridge is characterized by 12 to 15 km wide rift valley bounded by steep walls and prominent volcanic constructional ridges on either side of the central rift valley. A transform fault at 7 degrees 45'S displaces the ridge axis. A mantle Bouguer anomaly low of - 14 m Gals and shallowing of rift valley over the middle of the ridge segment indicate along axis crustal thickness variations. A poorly developed neovolcanic zone on the inner rift valley floor indicate dominance of tectonic extension. The off-axis volcanic ridgs suggest enhanced magmatic activity during the recent past
    URI
    http://drs.nio.org/drs/handle/2264/2031
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