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Holocene Paleoenvironmental Changes in the Lower Mahi Basin, Western India

Published online by Cambridge University Press:  18 July 2016

Sheela Kusumgar ,
Rachna Raj ,
L. S. Chamyal  and
M. G. Yadav
Sheela Kusumgar
Affiliation:
Physical Research Laboratory, Ahmedabad 380009, India
Rachna Raj
Affiliation:
Department of Geology, M.S. University of Baroda, Vadodara 390002, India
L. S. Chamyal
Affiliation:
Department of Geology, M.S. University of Baroda, Vadodara 390002, India
M. G. Yadav
Affiliation:
Physical Research Laboratory, Ahmedabad 380009, India
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Abstract

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Evidence of paleoenvironmental changes during the Holocene from the Lower Mahi basin of Western India have been documented. The unpaired S2 surface all along the estuarine zone of the Mahi basin has been identified as an uplifted marine terrace. The terraces have preserved in their lithosections fairly distinct horizons of grayish brown clays rich in marine microfauna. The intervening silty-sand horizons are indicative of freshwater origin. The sedimentary structure and faunal assemblage indicate that these units have been deposited in a marginal marine environment. The 14C ages obtained on these marine mud horizons show that between 3600 and 1700 bp the sea level was higher than at present. The geomorphic evidence suggests that a late Holocene uplift has played a significant role in lowering the relative sea level to its present position.

Type
Part 2: Applications
Information
Radiocarbon , Volume 40 , Issue 2: 16th International Radiocarbon Conference June 16-20, 1997 Part 2: Applications, Conference Editors: Willem G. Mook Johannes van der Plicht , 1997 , pp. 819 - 823
Copyright
Copyright © The American Journal of Science 

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