Figure F3. Estimated age span of Bengal Fan sedimentation vs. distance from the present apex or source of the fan. Shaded area at each site = known age span of fan sedimentation. The duration of the apparent hiatus was short near the source and long in the lower and distal fan. This plot is oversimplified because the distance from the fan apex changed through time with convergence of the Indian and Eurasian plates and with progradation of the delta in Bangladesh. IB Ranges = Indo-Burman Rangers, A-N Ridge = Andaman-Nicobar Ridge.
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