Geophysical and geological surveys along the northeastern flank of Mount error, Northwestern Indian Ocean
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Date
1987Author
Ramana, M.V.
Rajendraprasad, B.
Hansen, R.D.
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Bathymetry, multichannel continuous seismic reflection, magnetic and gravity surveys and sampling were carried out over Mount Error in the northwestern Indian Ocean and along the northeastern flank of the seamount, to study the nature of its basement. Preliminary interpretation of the seismic data indicate a 330 ms sedimentary sequence over the summit of the mount and approximately 880 ms of sediments in the valley at the base. Analyses of magnetic and gravity fields over the northeastern flank of the seamount suggest an igneous basement consisting of lamprophyre occuring as a thin slab (sill). Further, the average bathymetric contour of 4500 m and the magnetic model studies suggest that the lower boundary of the magnetisation contrast perhaps coincides with the thickness of the continental crust below the seabed.
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