Reactivation of precambrian faults on the southwestern continental margin of India: Evidence from gravity anomalies

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dc.contributor.author Subrahmanyam, V.
dc.contributor.author Ramana, M.V.
dc.contributor.author Rao, D.G.
dc.date.accessioned 2009-05-06T10:40:27Z
dc.date.available 2009-05-06T10:40:27Z
dc.date.issued 1993
dc.identifier.citation Tectonophysics, Vol.219; 327-339p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/2824
dc.description.abstract Gravimetric and bathymetric studies on the southwestern continental margin of India confirm the extension of onshore NW-SE-, NNW-SSE-, N-S-, NE-SW-, ENE-WSW- and E-W-trending lineaments of Precambrian age over a considerable distance into the offshore region. The bight in the bathymetry off Coondapoor the offsets of Bessas de Pedro bank and the Cora Divh Island of the Laccadive group, the Prathap Ridge, and the inferred mid-shelf basement ridge suggest block movements on the southwestern continental margin. The physiographic expression on the Prathap Ridge (around 14 degrees 20'N and 72 degrees 50'E) is unaffectEd. by some of the ENE-WSW lineaments, which probably indicates that these lineaments predate, the evolution of the topographic expression. As seafloor spreading advanced with respect to the Carlsberg Ridge, some of the ENE-WSW and NE-SW lineaments on the western continental margin appear to have been reactivated, and block movements took place. The presence of a basement ridge in the mid-shelf and the shelf margin basement high (Prathap Ridge) west of the slope resembles the structural style of a passive continental margin
dc.language.iso en
dc.publisher Elsevier
dc.rights Copyright [1993]. 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.
dc.subject geophysics
dc.subject gravity
dc.subject gravity anomalies
dc.subject bathymetry
dc.subject continental margins
dc.subject precambrian
dc.subject topographic features
dc.subject geophysical data
dc.subject tectonophysics
dc.subject tectonics
dc.title Reactivation of precambrian faults on the southwestern continental margin of India: Evidence from gravity anomalies
dc.type Journal Article


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