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

K. R. Reddy ¹, R. Jagadiswara Rao ¹, M. G. Chakrapani Naidu ¹

Affiliations
1 Department of Geology, Sri Venkateswara University, Tirupati, IN

Abstract

No Abstract.

Full Text

   

K. R. Reddy ¹, R. Jagadiswara Rao ¹

Affiliations
1 Department of Geology, Sri Venkateswara University, Tirupati, IN

Abstract

45 foraminiferal species belonging to the suborders Textulariina, Miliolina and Rotaliina, identified from 180 bottom sediment samples from the Pennar estuary in the east coast of India are reported and illustrated.

Full Text

     

A. N. Reddy ¹, K. R. Reddy ¹, R. Jagadiswara Rao ²

Affiliations
1 Department of Geology, S. V. University College, Tirupati-517 502, IN
2 Department of Geology, Sri Venkateswara University Postgraduate Extension Centre, Cuddapah-516004, IN

Abstract

The living and dead foraminiferida in the substrate samples collected from 14 Stations in the Araniar River estuary along the east coast of India from June 1978 to May 1979 have been studied quantitatively. The average salinity ranges from 23.5 to 38.5% and it is considered to be the principal controlling ecologic factor that limits the distribution and abundance of foraminiferida. The pattern of distribution of foraminiferida is also explained in terms of deposition of fluviatile sediments in the estuary. The abundance and living/dead ratios of foraminiferida tests have been compared with those recorded in the nearby Dugarazupatnam and Pennar estuaries.

Full Text

     

K. R. Reddy ¹, R. Jagadiswara Rao ²

Affiliations
1 Department of Geology, Sri Venkateswara University, Tirupati 517 502, IN
2 Department of Applied Geology, Sri Venkateswara University, Cuddapah 516 004, IN

Abstract

A quantitative study has been made of the distribution of recent foraminifera in 180 samples of bottom sediments collected from 15 stations in the Pennar estuary. The diversiiy and dominance of the living and total foraminiferal assemblages have been studied by calculating diversity indices and by relating the number of species with the per cent dominance and the average number of species with the average cumulative percentage of genera.

Full Text