19. Oligocene Planktonic Foraminiferal Assemblages from Eeep Sea Drilling Project Sites in the Indian Ocean
- J.R. Heirtzler,
- H.M. Bolli,
- T.A. Davies,
- J.B. Saunders and
- J.G. Sclater
Published Online: 23 MAR 2013
Copyright © 1977 by the American Geophysical Union.
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
- Published Online: 23 MAR 2013
- Published Print: 1 JAN 1977
Print ISBN: 9780875902081
Online ISBN: 9781118664919
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.