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Evolution of coastal landforms during the Holocene Epoch along the west and southeast coasts of Sri Lanka

Evolution of coastal landforms during the Holocene Epoch along the west and southeast coasts of... Holocene sea-level reconstructions are of broad interest in the island of Sri Lanka as it provides mainly information on the history of coastal systems. In addition, it is critical to predicting future human-induced sea-level changes on the island. This study deals with the regional correlation of evolution stage of coastal landforms with respect to the Holocene sea-level changes in Sri Lanka. Mud dominant sediments in the wet zone and relatively sand particles dominant sediments in the dry zone reveal that sediment distribution in coastal terrestrial archives are prominently controlled by climatic characteristics. The lower sedimentary succession (Facies 2) can probably indicate the time of mid-Holocene highstands. It is followed by expansion of beach ridges and headlands since marine transgression. The upper sedimentary succession (Facies 1) can probably suggest semi-closed or closed brackish to terrestrial systems after the mid-Holocene highstands. Keywords: Holocene; stratigraphic unit; sea-level change; Sri Lanka; Indian Ocean; climate; radiocarbon dates; sea-level curve. Reference to this paper should be made as follows: Ratnayake, A.S (2016) ` along the west and southeast coasts of Sri Lanka', Interdisciplinary Environmental Review, Vol. 17, No. 1, pp.60­69. Biographical notes: Amila Sandaruwan Ratnayake received BSc special degree in Geology at University of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Interdisciplinary Environmental Review Inderscience Publishers

Evolution of coastal landforms during the Holocene Epoch along the west and southeast coasts of Sri Lanka

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Publisher
Inderscience Publishers
Copyright
Copyright © 2016 Inderscience Enterprises Ltd.
ISSN
1521-0227
eISSN
2042-6992
DOI
10.1504/IER.2016.074884
Publisher site
See Article on Publisher Site

Abstract

Holocene sea-level reconstructions are of broad interest in the island of Sri Lanka as it provides mainly information on the history of coastal systems. In addition, it is critical to predicting future human-induced sea-level changes on the island. This study deals with the regional correlation of evolution stage of coastal landforms with respect to the Holocene sea-level changes in Sri Lanka. Mud dominant sediments in the wet zone and relatively sand particles dominant sediments in the dry zone reveal that sediment distribution in coastal terrestrial archives are prominently controlled by climatic characteristics. The lower sedimentary succession (Facies 2) can probably indicate the time of mid-Holocene highstands. It is followed by expansion of beach ridges and headlands since marine transgression. The upper sedimentary succession (Facies 1) can probably suggest semi-closed or closed brackish to terrestrial systems after the mid-Holocene highstands. Keywords: Holocene; stratigraphic unit; sea-level change; Sri Lanka; Indian Ocean; climate; radiocarbon dates; sea-level curve. Reference to this paper should be made as follows: Ratnayake, A.S (2016) ` along the west and southeast coasts of Sri Lanka', Interdisciplinary Environmental Review, Vol. 17, No. 1, pp.60­69. Biographical notes: Amila Sandaruwan Ratnayake received BSc special degree in Geology at University of

Journal

Interdisciplinary Environmental ReviewInderscience Publishers

Published: Jan 1, 2016

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