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Evidence of fault reactivation off Pondicherry coast from marine geophysical data

DRS at CSIR-National Institute of Oceanography

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Title Evidence of fault reactivation off Pondicherry coast from marine geophysical data
 
Creator Murty, G.P.S.
Subrahmanyam, A.S.
Murthy, K.S.R.
Sarma, K.V.L.N.S.
 
Subject bathymetry
geophysical anomalies
 
Description The present study mainly focuses on the northern part of the Cauvery offshore basin, between latitudes 10 degrees and 14 degrees N, and longitudes 80 degrees and 82 degrees E, over which the bathymetry, gravity and magnetic data are collected. The bathymetry map in general shows a linear N-S trend, except between latitudes 10 degrees 45 minutes N and 12 degrees 15 minutes N, where the contours trend coastward indicating a major fault zone. Similar trend is also evidenced by the geophysical anomalies. The free-air gravity anomaly map is characterized by a significant north-south trending linear gravity low with major discontinuities along 12 degrees 15 minutes N and 11 degrees 45 minutes N respectively, indicating major fault zones. Total field magnetic anomaly map also shows two major discontinuities, FG1 and FG2, along 12 degrees 15 minutes N (off Pondicherry), and 10 degrees 45 minutes N (south of Karaikal) respectively
 
Date 2006-08-29T07:16:04Z
2006-08-29T07:16:04Z
2002
 
Type Journal Article
 
Identifier Current Science, vol.83(12), 1446-1449p.
http://drs.nio.org/drs/handle/2264/290
 
Language en
 
Format 420864 bytes
application/pdf
 
Publisher Indian Academy of Sciences