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Geo-Environmental Appraisal of the Meda Creek, Saurashtra, Gujarat


Affiliations
1 Gujarat Ecology Society, 3, Synergy House, Subhanpura, Vadodara - 390 023, India
2 Department of Geology, M.S. University of Baroda, Vadodara - 390 002, India
     

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Water chemistry, sediment texture, clay mineralogy and foraminiferal contents from the bottom of Meda creek were studied to assess the geo-environmental status of the creek. Water quality data for three seasons suggests domination of marine environment as pH remained above 8 and salinity above 35‰ throughout. Clay dominate the bottom sediments, except near mouth. Montmorillonite, illite and kaolinite are the major clay minerals in the sediments. In absence of any source rock in the catchment of the Meda creek, the presence of illite and kaolinite indicates their transportation and depositions from near coastal waters during high tides. Ammonia sp. is the most dominating foraminifera. Reworked forms as well as angular asymmetric forms of foraminifera were dominant in clay rich areas of the creek.

Keywords

Geo-Environment, Clay Minerals, Foraminifera, Creek, Saurashtra, Gujarat.
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  • Geo-Environmental Appraisal of the Meda Creek, Saurashtra, Gujarat

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Authors

Jayendra Lakhmapurkar
Gujarat Ecology Society, 3, Synergy House, Subhanpura, Vadodara - 390 023, India
Nilesh Bhatt
Department of Geology, M.S. University of Baroda, Vadodara - 390 002, India

Abstract


Water chemistry, sediment texture, clay mineralogy and foraminiferal contents from the bottom of Meda creek were studied to assess the geo-environmental status of the creek. Water quality data for three seasons suggests domination of marine environment as pH remained above 8 and salinity above 35‰ throughout. Clay dominate the bottom sediments, except near mouth. Montmorillonite, illite and kaolinite are the major clay minerals in the sediments. In absence of any source rock in the catchment of the Meda creek, the presence of illite and kaolinite indicates their transportation and depositions from near coastal waters during high tides. Ammonia sp. is the most dominating foraminifera. Reworked forms as well as angular asymmetric forms of foraminifera were dominant in clay rich areas of the creek.

Keywords


Geo-Environment, Clay Minerals, Foraminifera, Creek, Saurashtra, Gujarat.