Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications

The species diversity indices, as defined by the number of species, S; Shannon-Wiener index, H(S) and Buzas-Gibson index, E', of DSDP sites 219, 220, 237 and 238 were measured to determine the benthic foraminiferal diversity patterns in the Indian Ocean deep sea sequences during the Neogene. Th...

Full description

Bibliographic Details
Main Authors: Rai, Ajai K., Srinivasan, M. S.
Format: Article in Journal/Newspaper
Language:unknown
Published: Indian Academy of Sciences 1992
Subjects:
QE Geology
Antarctic
Indian
Antarc*
Online Access:http://repository.ias.ac.in/51159/
http://repository.ias.ac.in/51159/1/13-pub.pdf
http://www.ias.ac.in/j_archive/epsci/101/3/299-316/viewpage.html
id ftindianacasci:oai:repository.ias.ac.in:51159
record_format openpolar
spelling ftindianacasci:oai:repository.ias.ac.in:51159 2023-05-15T13:59:32+02:00 Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications Rai, Ajai K. Srinivasan, M. S. 1992-09 application/pdf http://repository.ias.ac.in/51159/ http://repository.ias.ac.in/51159/1/13-pub.pdf http://www.ias.ac.in/j_archive/epsci/101/3/299-316/viewpage.html unknown Indian Academy of Sciences http://repository.ias.ac.in/51159/1/13-pub.pdf Rai, Ajai K. Srinivasan, M. S. (1992) Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 101 (3). pp. 299-316. ISSN 0253-4126 QE Geology Article PeerReviewed 1992 ftindianacasci 2013-01-20T11:47:58Z The species diversity indices, as defined by the number of species, S; Shannon-Wiener index, H(S) and Buzas-Gibson index, E', of DSDP sites 219, 220, 237 and 238 were measured to determine the benthic foraminiferal diversity patterns in the Indian Ocean deep sea sequences during the Neogene. The Time-Stability hypothesis could satisfactorily explain the observed diversity patterns. The general patterns of diversity suggest environmental stability during the Neogene. However, few small fluctuations in diversity during the Middle Miocene (c.14·8 Ma), Late Miocene (c.6·0 Ma) and Late Pliocene (c.2·0 Ma) may possibly be the effects of Antarctic Bottom Water (AABW) activity in this region. The benthic foraminiferal diversity in the tropical Indian Ocean is more than the high latitudinal areas with comparable depths. Article in Journal/Newspaper Antarc* Antarctic Indian Academy of Sciences: Publication of Fellows Antarctic Indian
institution Open Polar
collection Indian Academy of Sciences: Publication of Fellows
op_collection_id ftindianacasci
language unknown
topic QE Geology
spellingShingle QE Geology
Rai, Ajai K.
Srinivasan, M. S.
Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
topic_facet QE Geology
description The species diversity indices, as defined by the number of species, S; Shannon-Wiener index, H(S) and Buzas-Gibson index, E', of DSDP sites 219, 220, 237 and 238 were measured to determine the benthic foraminiferal diversity patterns in the Indian Ocean deep sea sequences during the Neogene. The Time-Stability hypothesis could satisfactorily explain the observed diversity patterns. The general patterns of diversity suggest environmental stability during the Neogene. However, few small fluctuations in diversity during the Middle Miocene (c.14·8 Ma), Late Miocene (c.6·0 Ma) and Late Pliocene (c.2·0 Ma) may possibly be the effects of Antarctic Bottom Water (AABW) activity in this region. The benthic foraminiferal diversity in the tropical Indian Ocean is more than the high latitudinal areas with comparable depths.
format Article in Journal/Newspaper
author Rai, Ajai K.
Srinivasan, M. S.
author_facet Rai, Ajai K.
Srinivasan, M. S.
author_sort Rai, Ajai K.
title Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
title_short Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
title_full Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
title_fullStr Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
title_full_unstemmed Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications
title_sort neogene deep sea benthic foraminiferal diversity in the indian ocean: paleoceanographic implications
publisher Indian Academy of Sciences
publishDate 1992
url http://repository.ias.ac.in/51159/
http://repository.ias.ac.in/51159/1/13-pub.pdf
http://www.ias.ac.in/j_archive/epsci/101/3/299-316/viewpage.html
geographic Antarctic
Indian
geographic_facet Antarctic
Indian
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_relation http://repository.ias.ac.in/51159/1/13-pub.pdf
Rai, Ajai K.
Srinivasan, M. S. (1992) Neogene deep sea benthic foraminiferal diversity in the Indian Ocean: paleoceanographic implications Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 101 (3). pp. 299-316. ISSN 0253-4126
_version_ 1766268129230454784

Similar Items