What kinds of sediment cover the floor of the Bay of Bengal?

The floor of the Bay of Bengal is primarily covered by terrigenous deposits, which are derived from rivers originating in the Himalayas and the Indian subcontinent. The bay contains the world's widest and thickest fan of these river-borne sediments, particularly associated with the Ganges River.12

In specific locations, such as near the Andaman and Nicobar Islands and atop the Ninetyeast Ridge, the seafloor is characterized by calcareous clays and oozes. Additionally, the continental-shelf sediment in the northern part of the bay's east coast is noted for having a relatively low concentration of organic matter compared to the global average for nearshore sediments.1