Abstract
A group of short, linear structural depressions occurs in the Wharton basin in the northeast Indian Ocean. Depth to acoustic basement exceeds 7500 meters in at least one of the deeps. Bathymetric and seismic data indicate that the deeps may be grabens produced by crustal extension and thinning. Another possibility is that they may be fracture zones associated with an extinct (and ill-defined) spreading center that have been disoriented by crustal motions subsequent to their emplacement.
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