Holocene Evolution of Deltas on the East Coast of India

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by Kakani Nageswara Rao, Andhra Univ, Visakhapatnam, India,
Noboru Sadakata, Andhra Univ, Visakhapatnam, India,

Document Type: Proceeding Paper

Part of: Deltas of the World

Abstract: Disposition of beach ridges vis-a-vis paleo river courses has helped in recognizing several abandoned delta lobes and reconstructing the stages in the progradation of various deltas on the east coast of India. The sea level was more than 100m below the present level, around 13 ka, in this region and the maximum Holocene transgression has risen to _5m around 6 ka, from where it has fallen to the present level with at least 3 relatively stationary levels in between, as can be inferred from the orientation of different sets of beach ridges. The delta progradation, at present, is mostly by the growth of spits and lagoon-filling.

Subject Headings: Developing countries | Coastal environment | Beaches | Rivers and streams | Sea level | Lagoons | Spits (landform) | India | Asia

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