Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

T. Venkata Rao ¹, M. Subba Rao ¹

Affiliations
1 Department of Geology, Andhra University, Waltair, IN

Abstract

Dummulapeta Creek is a marginal marine environment near Kakinada, east coast of India. The foraminifera as well as seasonal variations in their abundance and distribution in the creek have been investigated in relation to different ecological factors like salinity, temperature, pH, and dissolved oxygen of waters in contact with the sediment, and texture and organic matter content of the sediments.

Fifty-six species of foraminifera have been identified from the creek. Of these, 33 species were never found in living condition in the creek. Of the remaining 23 species represented by living individuals, only QuinquelOculina seminulum, Ammonia beccarii, A. tepida, A. dentatus, and Miliammina fusca var. occur abundantly in the creek. These species seem to reproduce in the creek in December under relatively low temperature and salinity conditions.

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D. Chandrasekhara Rao ¹, M. Subba Rao ¹

Affiliations
1 Department of Geology, Andhra University, Waltair 530003, IN

Abstract

44 agglutinated foraminiferid species and subspecies have been identified from the Visakhapatnam harbour channel sediments, east coast of India. Twenty-four of them have not been reported by earlier workers who studied the foraminiferid assemblages of similar hyposaline environments located to the south and north of Visakhapatnam harbour. Five of them, however, are known from the shelf sediments off the east and west coasts of India.

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M. Subba Rao ¹

Affiliations
1 Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, IN

Abstract

No Abstract.

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