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Magnetic and bathymetric investigations over the Vema Region of the Central Indian Ridge: Tectonic implications

DRS at CSIR-National Institute of Oceanography

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Title Magnetic and bathymetric investigations over the Vema Region of the Central Indian Ridge: Tectonic implications
 
Creator Drolia, R.K.
Ghose, I.
Subrahmanyam, A.S.
Rao, M.M.M.
Kessarkar, P.M.
Murthy, K.S.R.
 
Subject magnetic exploration
magnetic data
bathymetry
magnetic anomalies
fracture zones
plate tectonics
mid-ocean ridge
 
Description Magnetic and bathymetric data were collected along N50 degrees E profiles in the Vema Region (7-12 degrees S, 64-70 degrees E) across five ridge segments of the Central Indian Ridge (CIR). Anomalies up to A5 (10 Ma), identified by generating synthetics for each profile, show asymmetric spreading. Though inter-segmental variations in spreading rate have been observed, the mean half-spreading rate increases from 1.8 cm/yr in the region north of Vema Transform to 2.1 cm/yr south of the Vema Transform. The average spreading rate for the last 10 Ma has not always been symmetric. The interpretation of magnetic and bathymetric data shows the complex nature of this part of the CIR which could probably be attributed to: (1) the short ridge segment; (2) interaction with Fracture zone; and (3) interaction between the CIR and the Wide Boundary Zone (WBZ) separating the Indian and Australian plates
 
Date 2009-01-09T08:08:13Z
2009-01-09T08:08:13Z
2000
 
Type Journal Article
 
Identifier Marine Geology, Vol.167; 413-423p.
http://drs.nio.org/drs/handle/2264/1652
 
Language en
 
Rights Copyright [2000]. 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 Elsevier