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

DRS at CSIR-National Institute of Oceanography

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Title Geophysical investigations over a segment of the Central Indian Ridge, Indian Ocean
 
Creator KameshRaju, K.A.
Ramprasad, T.
Subrahmanyam, C.
 
Subject swaths
bathymetry
gravity surveys
magnetic data
mid ocean ridges
rift zones
plate tectonics
transform faults
 
Description 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
 
Date 2009-01-12T09:08:29Z
2009-01-12T09:08:29Z
1997
 
Type Journal Article
 
Identifier Geo-Marine Letters, Vol.17; 195-201p.
http://drs.nio.org/drs/handle/2264/2031
 
Language en
 
Rights Copyright [1997]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Springer