<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Red sand dunes occur in the coastal plains of south east and west of Tamil Nadu, India between the coordinates of 8°00′ to 9°30′ N; 77°18′ to 79° 00′ E. OSL dating of these sands indicated aggradations between ∼16-9 ka and ∼9-3 ka in the west and east coasts respectively. Dating results from inland red dunes at the foothills of Western Ghats show a break in deposition at ∼6 ka and aggradation since ∼2 ka. The sand aggradations in the west coast occurred during the transition period when SW monsoon in the area was reestablishing. The dunes attained their stability by 9 ka. In the coastal region, the aggradations were controlled by sea level changes and a local recycling of earlier dunes (in the east coast). In the inland areas, the dune building was controlled by sand supply from fluvial sources.</p></abstract>

Red sand dunes occur in the coastal plains of south east and west of Tamil Nadu, India between the coordinates of 8°00′ to 9°30′ N; 77°18′ to 79° 00′ E. OSL dating of these sands indicated aggradations between ∼16-9 ka and ∼9-3 ka in the west and east coasts respectively. Dating results from inland red dunes at the foothills of Western Ghats show a break in deposition at ∼6 ka and aggradation since ∼2 ka. The sand aggradations in the west coast occurred during the transition period when SW monsoon in the area was reestablishing. The dunes attained their stability by 9 ka. In the coastal region, the aggradations were controlled by sea level changes and a local recycling of earlier dunes (in the east coast). In the inland areas, the dune building was controlled by sand supply from fluvial sources.

Chronology of red dune aggradations of South India and its Palaeo-environmental significance

Geosciences Division, Physical Research Laboratory, Ahmedabad, India

Department of Marine Geology and Geophysics, Cochin University of Science and Technology, Kerala, India

UGC Emeritus Fellow, Dept. of Geology, University of Kerala, Kariavattom Campus, Trivandrum, India

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Red sand dunes occur in the coastal plains of south east and west of Tamil Nadu, India between the coordinates of 8°00′ to 9°30′ N; 77°18′ to 79° 00′ E. OSL...

Chronology of red dune aggradations of South India and its Palaeo-environmental significance

Published Online: Sep 27, 2013

Page range: 274 - 282

DOI: https://doi.org/10.2478/s13386-013-0118-5

Keywords
red sand dunes, OSL dating, Pleistocene, Holocene, chronology, sand aggradations

© 2013 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Chronology of red dune aggradations of South India and its Palaeo-environmental significance

Published Online: Sep 27, 2013

Page range: 274 - 282

DOI: https://doi.org/10.2478/s13386-013-0118-5

Keywordsred sand dunes, OSL dating, Pleistocene, Holocene, chronology, sand aggradations

© 2013 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
red sand dunes, OSL dating, Pleistocene, Holocene, chronology, sand aggradations