Micropalaeontology of Marine Miocene Subsurface Sequence of Galsi Area, Bengal Basin

Authors

  • Ranjit K. Banerji
     Indian Institute of Technology, Bombay 400076
  • R. M. Baruah
     Oil and Natural Gas Commission, Sibsagar, (Assam) 785640
  • S. C. Gupta
     Oil and Natural Gas Commission, Sibsagar, (Assam) 785640

Abstract

The exploration for hydrocarbons in the Bengal Basin has revealed the development of nearly 100m of a highly fossiliferous subsurface sequence near Galsi in West Bengal. This sequence has yielded a large number of planktonic and benthonic foraminiferal species. In all, twenty-two species belonging to seven genera and three families of planktonic foraminifera are identified and described. Based on their stratigraphical distribution, four assemblage Zones are distinguished which range in age from Zone N.4 to N.14 (Aquitanian to Langhian, Early to Middle Miocene). The microfaunal study suggests an oscillatory nature of the depositional basin varying from coastal marginal facies to short intervals of open marine inter-tongues within overall shallow marginal basin.

Downloads

Download data is not yet available.

Issue

Volume 22, Issue 2, February 1981

Section

Research Papers

Downloads

Published

1981-02-01

How to Cite

Banerji, R. K., Baruah, R. M., & Gupta, S. C. (1981). Micropalaeontology of Marine Miocene Subsurface Sequence of Galsi Area, Bengal Basin. Journal of Geological Society of India, 22(2), 55–68. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/64799

References

BISWAS, B., (1963) Results of exploration for petroleum in the western part of Bengal Basin. India. Proc. Symp. Dev. Petrol. Res., ECAFE. Mill. Res. Dev., Ser. no. 18, pt. 1, pp. 241-250.

BLOW, W. H., (1969) Late Middle Eocene to Recent planktonic foraminiferal biostratigraphy. In: Bronnimann, P. and Renz, H. H., Eds. Proceedings of first International conference on planktonic microfossils. Lieden, E. J., BrilL, v. 1, pp. 199-421, pls. 1-54.

BLOW, W. H. and BANNER, F. T., (1962) The Mid-Tertiary (Upper Eocene to Aquitanian) Globigerinacea. In: Eames et al., Fundamentals of Mid-Tertiary stratigraphical correlation, London, Cambridge Univ. Press, pt. 2, pp. 61-151, pls. 8-17.

BOLLI, H. M., (1957) Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua Formations of Trinidad. B.W.I. U.S. Nat. Mus. Bull., v. 215. pp. 97-123. figs. 17-20.

JENKINS, D. G., (1977) Lower Miocene planktonic foraminifera from bore hole in the English Channel. Micropaleontology, v. 23, pp. 297-318, pls. 1-5.

POSTUMA, J: A., (1971) Manual of planktonic foraminifera. Elsevier Pub. Co., Amsterdam.

PUJOL, C., (1970) Contribution a etude des Foraminiferes planctoniques neogenes daus le Bassin Aquitaine. Inst. Geol. Bassin Aquitaine, Bull., no. 9, pp. 201-219, pls. 1-4.

VENKATA RAO, T. and SUBBA RAO, M., (1974) Recent foraminifera of Suddagedda estuary, east coast of India. Micropaleontology, v. 20, pp. 398-419, pls. 1-3.

Most read articles by the same author(s)