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ISSN: 2157-7617

Journal of Earth Science & Climatic Change
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  • Research Article   
  • J Earth Sci Clim Change 2014, Vol 5(9): 233
  • DOI: 10.4172/2157-7617.1000233

Evidence of Northward Limit of Sea Level Transgression in and around Central Part of Bangladesh during Holocene

Rashid T1*, Saha SK2 and Hassan Z1
1Department of Geography and Environment, University of Dhaka, Bangladesh
2Department of Geology, University of Dhaka, Bangladesh
*Corresponding Author : Rashid T, Department of Geography and Environment, University of Dhaka, Bangladesh, Tel: 880-0-9661900, Email: [email protected]

Received Date: Aug 11, 2014 / Accepted Date: Oct 30, 2014 / Published Date: Nov 10, 2014

Abstract

The study deals with reconstruction of paleoenvironment of the central part of Dhaka in order to explore the northward limit of sea level transgression in Bangladesh. The study area is located at Sutrapur village on the left bank of Turag River in the Pleistocene Madhupur tract of Dhaka city. Lithostratigraphic analysis along with pollen and diatom analyses were performed. The lithostatigraphic records at Shutrapur site show that the Holocene fresh water deposit overlies the Madhupur Clay and Sand Formation. The site shows evidence of weathering in Madhupur Clay and Sand Formation which infers that the tract might have eroded and exposed for some period and weathering acted upon the tract during that time. The pollen and diatom results reveal that the dissect valley filled with Holocene fresh water lentic deposits during the late Holocene period. In addition, the present study found that the Shutrapur site could not receive marine water while the Chatbari site (23 km south from Shutrapur site) experienced with marine transgression approximately 5500 cal yrs BP. It infers that the marine limit persisted at or around the Chatbari site and marine influence could not reach at Shutrapur site.

Keywords: Madhupur tract; Facies analysis; Sea level change; Pollen, Diatom; Lentic environment

Citation: Rashid T, Saha SK, Hassan Z (2014) Evidence of Northward Limit of Sea Level Transgression in and around Central Part of Bangladesh during Holocene. J Earth Sci Clim Change 5: 233. Doi: 10.4172/2157-7617.1000233

Copyright: ©2014 Rashid T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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