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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 

References

Brady, O. L. 1964 General correlation of Foraminiferal structure with environment. In Imbrie, J. and Newell, N., eds., Approaches to Paleoecology. New York, Wiley: 75–90.Google Scholar
Cearreta, A. and Murray, J. W. 1996 Holocene palaeoenvironmental and relative sea level changes in the Santona Estuary, Spain. Journal of Foraminiferal Research 26: 289–299.CrossRefGoogle Scholar
Gupta, S. K. and Polach, H. A. 1985 Radiocarbon Dating Practices at ANU. Canberra, Radiocarbon Laboratory, Research School of Pacific Studies, ANU: 173 p.Google Scholar
Hashmi, N. H., Nigam, R., Nair, R. K. and Rajagopalan, G. 1995 Holocene sea level fluctuations on Western India continental margin: An update. Journal of the Geological Society of India 46: 157–162.Google Scholar
Khadkikar, A. S., Chamyal, L. S., Malik, J. N., Maurya, D. M. and Merh, S. S. 1996 Arid humid cycles in Mainland Gujarat over the past 300 Ka: Evidence from the Mahi River basin. Journal of the Geological Society of India 46: 383–388.Google Scholar
Malik, J. N. 1997 (ms.) Late Quaternary depositional history of the Mahi basin with special reference to neotectonism and palaeoclimates. Unpublished Ph.D. thesis. M.S. University of Baroda, India.Google Scholar
Mathur, L. P., Rao, K. L. N. and Chaube, A. N. 1968 Tectonic framework of Cambay basin, India. Bulletin of the Oil and Natural Gas Commission. 1: 7–28.Google Scholar
Maurya, D. M., Malik, J. N., Rachna, R. and Chamyal, I. S. 1997 The Holocene valley fill terraces in the Lower Mahi valley. Current Science 73: 539–542.Google Scholar
Murray, J. W. 1973 Distribution and Ecology of Living Benthic Foraminifera. London, Heinemann: 274 p.Google Scholar
Nigam, R. and Khare, N. 1994 Effect of river discharge on the morphology of the benthic foraminiferal test. Journal of the Geological Society of India 43: 457–463.Google Scholar
Pant, R. K. and Chamyal, L. S. 1990 Quaternary sedimentation pattern and terrain evolution in the Mahi river basin, Gujarat, India. Proceedings of the Indian National Science Academy 56: 501–511.Google Scholar
Pant, R. K. and Juyal, N. 1993 Late Quaternary coastal instability and sea level changes: New evidence from Saurashtra coast, Western India. Zeitschrift für Geomorphologie N.F. 37: 29–40.Google Scholar
Rachna, R. and Chamyal, L. S. 1997 A note on Foraminiferids from a new Mahi formation, Rayka, Mainland Gujarat. Journal of Geoscience 18: 123–129.Google Scholar
Zeuner, F. E. 1950 Stone age and Pleistocene chronology in Gujarat. Deccan College Monograph , Series 6: 46 p.Google Scholar