15. Paleocene to Eocene Calcareous Nannoplankton of the Indian Ocean

  1. J.R. Heirtzler,
  2. H.M. Bolli,
  3. T.A. Davies,
  4. J.B. Saunders and
  5. J.G. Sclater
  1. Franca Proto Decima

Published Online: 23 MAR 2013

DOI: 10.1029/SP009p0353

Indian Ocean Geology and Biostratigraphy

Indian Ocean Geology and Biostratigraphy

How to Cite

Decima, F. P. (1977) Paleocene to Eocene Calcareous Nannoplankton of the Indian Ocean, in Indian Ocean Geology and Biostratigraphy (eds J.R. Heirtzler, H.M. Bolli, T.A. Davies, J.B. Saunders and J.G. Sclater), American Geophysical Union, Washington, D. C.. doi: 10.1029/SP009p0353

Author Information

  1. Instituto di Geologia dell'Universita di Padova, Italia

Publication History

  1. Published Online: 23 MAR 2013
  2. Published Print: 1 JAN 1977

ISBN Information

Print ISBN: 9780875902081

Online ISBN: 9781118664919

SEARCH

Summary

The information on the Paleocene to Eocene calcareous nannoplankton of the Indian Ocean Sites of the Deep Sea Drilling Project is summarized. With the exception of the lower Paleocene Markalius inversus, Cruciplacolithus tenuis s.s. and Ellipsolithus macellus zones of Martini, all tropical/subtropical Paleocene and Eocene nannoplankton zones of Martini (1971) and of Bukry (1973) could be recognized. Different biostratigraphic units had to be applied for theSouthern Indian Ocean where the low diversification of the higher latitude nannofloras, and the absence of some markers prevented thehigh biostratigraphic resolution applicable in low latitudes. The possibility of a gap at the Cretaceous/Tertiary boundary is discussed. The paleodistribution patterns of some climatically restricted species are reported.