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Authors
Affiliations
1 Naval Physical and Oceanographic Laboratory, Thrikkakara, BMC (PO), Cochin-682021, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 49, No 1 (1997), Pagination: 39-46
Abstract
Laccadive ridge is a prominent feature in Indian Ocean, off west coast of India .Marine magnetic survey carried out across the ridge between 8° and 12°N reveals that the ridge is associated with strong magnetic anomalies of the order of 200 to 400 nT. A significant low magnetic trend is present over the topographic high of the ridge. The results of spectral analysis and two-dimensional modelling of the data suggest the possible presence of an anomalous basic body, with varying thickness. The inclination and declination obtained indicate that the basic body may be derived from same volcanic activity as of the onshore traps associated with normal remanent magnetism.
Keywords
Geophysics, Magnetic Data, 2-D Modelling, Laccadive Ridge.