19. Oligocene Planktonic Foraminiferal Assemblages from Eeep Sea Drilling Project Sites in 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. Robert L. Fleisher

Published Online: 23 MAR 2013

DOI: 10.1029/SP009p0459

Indian Ocean Geology and Biostratigraphy

Indian Ocean Geology and Biostratigraphy

How to Cite

Fleisher, R. L. (1977) Oligocene Planktonic Foraminiferal Assemblages from Eeep Sea Drilling Project Sites in 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/SP009p0459

Author Information

  1. Exxon Production Research Company, Houston, Texas 77001

Publication History

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

ISBN Information

Print ISBN: 9780875902081

Online ISBN: 9781118664919

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Summary

Planktonic foraminifera of Oligocène age were recovered at only thirteen of the forty-six Indian Ocean Deep Sea Drilling Project sites, all but one of which were situated on topographically high structures. Calcium carbonate dissolution is intense in all assemblages, which are often reduced to a few solution-resistant and typically long-ranging species. This preservation pattern suggests a shallow lysocline in the Indian Ocean throughout most of this interval.