Abstract
Three successive subspecies of Nummulites burdigalensis evolved from N. solitarius. These include N. burdigalensis keupperi, N. burdigalensis burdigalensis and N. burdigalensis cantabricus. The evolving lineage is traced in a borehole drilled through the Naredi Formation of Kutch. The associated taxa include N. solitarius and N. fraasi in the lower part and Assilina laxispira and A. spinosa in the upper part of the formation. The better stratigraphic resolution achieved by subspecies identification and the lately redefined Ilerdien Stage in the background of Early Eocene carbon isotope excursion marker, lead to constrain the age of Naredi Formation as Early Eocene, ranging from shallow-benthic zones SBZ6 to SBZ11.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Biswas, S.K. (1992) Tertiary stratigraphy of Kutch. Jour. Pal. Soc. India, v.37, pp.1–29.
Biswas, S.K. and Raju, D.S.N. (1971) Note on the rock stratigraphic classification of the Tertiary sediments of Kutch. Quart. Jour. Geol. Min. Met. Soc. India, v.43, pp.177–180.
Davies, L.M. (1927) The Ranikot beds at Thal (nortwest frontier provinces of India). Quart. Jour. Geol. Soc., v.lxxxiii,pt 2, pp.260–290.
Pandey, J. and Ravindran, C.N. (1988) Foraminiferal controls in the Indian Palaeocene, Proceedings of the Symposeum on Palaeocene of India: Limits and subdivisions. Indian Assoc. Palynostrat., Lucknow, pp.124–184.
Pujalte, V., Baceta, J.I., Schmitz, B., Orue-etxebarria, X., Payros, A., Bernaola, G., Apellaniz, E., Caballero, F., Robador, A., Serra-Kiel, J. and Tosquella, J. (2009) Redefinition of the Ilerdian Stage (early Eocene). Geologica Acta, v.7, pp.177–194.
Punekar, J. and Saraswati, P.K. (2010) Age of the Vastan lignite in context of some oldest Cenozoin fossil mammals from India. Jour. Geol. Soc. India, v.76, pp.63–68.
Saraswati, P.K., Patra, P.K. and Banerjee, R.K. (2000) Biometric study of some Eocene Nummulites from Kutch and Jaisalmer, India. Jour. Pal. Soc. India, v.45, pp.91–122.
Schaub, H. (1981) Nummulites et Assilines de la Tethys Paleogene. Taxinomie, Phylogenese et Biostratigraphie. Mem. Suisses Paleont., v.104–106, 236p.
Scheibner, C. and Speijer, R.P. (2009) Recalibration of the Tethyan shallow-benthic zonation across the Paleocene — Eocene boundary: the Egyptian record. Geologica Acta, v. 7, pp.195–214.
Serra-Kiel, J., Hottinger, L., Caus, E., Drobne, K., Ferrandez, C., Jauhri, A.K., Less, G., Pavlovec, R., Pignatti, J., Samso, J.M., Schaub, H., Sirel, E., Strougo, A., Tambareau, Y., Tosquella, J. and Zakrevskaya, E. (1998) Larger foraminiferal biostratigraphy of the Tethyan Paleocene and Eocene. Bull. Soc. Geol. Fr., v.169, pp.281–299.
Shukla, S. (2008) Atlas of Taxonomic and Bio-Chronostratigraphic Studies on Palaeogene Larger Benthic Foraminifera from Indian Sedimentary Basins. Paleontographica Indica, 9, ONGC, Dehradun, 183p.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Saraswati, P.K., Sarkar, U. & Banerjee, S. Nummulites solitarius — Nummulites burdigalensis lineage in Kutch with remarks on the age of Naredi Formation. J Geol Soc India 79, 476–482 (2012). https://doi.org/10.1007/s12594-012-0072-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12594-012-0072-5