(Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609

The planktonic foraminifers in 124 samples from Holes 609 and 609B have been analyzed quantitatively to see whether oceanographic events in the late Miocene and early Pliocene (6.5-4.0 Ma) are reflected in the distribution of individual species. Major changes in sea-surface temperature and bottom-wa...

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Bibliographic Details
Main Authors: P W P Hooper, Weaver, Philip PE
Format: Dataset
Language:English
Published: PANGAEA - Publishing Network for Geoscientific and Environmental Data 1987
Subjects:
Antarctic
Antarc*
Neogloboquadrina pachyderma
North Atlantic Deep Water
North Atlantic
Online Access:https://dx.doi.org/10.15468/yx2tgj
https://www.gbif.org/dataset/1de7c7ff-023b-4a87-84f9-e6eebf22fd4a
id ftdatacite:10.15468/yx2tgj
record_format openpolar
spelling ftdatacite:10.15468/yx2tgj 2023-05-15T13:53:47+02:00 (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609 P W P Hooper Weaver, Philip PE 1987 https://dx.doi.org/10.15468/yx2tgj https://www.gbif.org/dataset/1de7c7ff-023b-4a87-84f9-e6eebf22fd4a en eng PANGAEA - Publishing Network for Geoscientific and Environmental Data https://dx.doi.org/10.1594/pangaea.788916 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY OCCURRENCE Dataset dataset 1987 ftdatacite https://doi.org/10.15468/yx2tgj https://doi.org/10.1594/pangaea.788916 2022-04-01T09:01:11Z The planktonic foraminifers in 124 samples from Holes 609 and 609B have been analyzed quantitatively to see whether oceanographic events in the late Miocene and early Pliocene (6.5-4.0 Ma) are reflected in the distribution of individual species. Major changes in sea-surface temperature and bottom-water circulation are postulated, mainly on the basis of the coiling-direction ratios in Neogloboquadrina pachyderma (Ehrenberg) and a dissolution index. A cool interval peaking at around 6.2 Ma was followed by climatic fluctuations, possibly indicative of glacial cycles, before a general warming in the Pliocene. Intense dissolution of CaCO3 at this site on both sides of the Miocene/Pliocene boundary is inferred to have resulted from the presence of Antarctic Bottom Water, and an influx of less aggressive North Atlantic Deep Water is indicated at the actual boundary. These climatic and oceanographic changes are tentatively linked to the Messinian salinity crisis in the Mediterranean. Dataset Antarc* Antarctic Neogloboquadrina pachyderma North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Antarctic
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language English
description The planktonic foraminifers in 124 samples from Holes 609 and 609B have been analyzed quantitatively to see whether oceanographic events in the late Miocene and early Pliocene (6.5-4.0 Ma) are reflected in the distribution of individual species. Major changes in sea-surface temperature and bottom-water circulation are postulated, mainly on the basis of the coiling-direction ratios in Neogloboquadrina pachyderma (Ehrenberg) and a dissolution index. A cool interval peaking at around 6.2 Ma was followed by climatic fluctuations, possibly indicative of glacial cycles, before a general warming in the Pliocene. Intense dissolution of CaCO3 at this site on both sides of the Miocene/Pliocene boundary is inferred to have resulted from the presence of Antarctic Bottom Water, and an influx of less aggressive North Atlantic Deep Water is indicated at the actual boundary. These climatic and oceanographic changes are tentatively linked to the Messinian salinity crisis in the Mediterranean.
format Dataset
author P W P Hooper
Weaver, Philip PE
spellingShingle P W P Hooper
Weaver, Philip PE
(Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
author_facet P W P Hooper
Weaver, Philip PE
author_sort P W P Hooper
title (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
title_short (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
title_full (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
title_fullStr (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
title_full_unstemmed (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609
title_sort (table 1) planktonic foraminiferal communities at dsdp holes 94-609b and 94-609
publisher PANGAEA - Publishing Network for Geoscientific and Environmental Data
publishDate 1987
url https://dx.doi.org/10.15468/yx2tgj
https://www.gbif.org/dataset/1de7c7ff-023b-4a87-84f9-e6eebf22fd4a
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
Neogloboquadrina pachyderma
North Atlantic Deep Water
North Atlantic
genre_facet Antarc*
Antarctic
Neogloboquadrina pachyderma
North Atlantic Deep Water
North Atlantic
op_relation https://dx.doi.org/10.1594/pangaea.788916
op_rights Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
cc-by-4.0
op_rightsnorm CC-BY
op_doi https://doi.org/10.15468/yx2tgj
https://doi.org/10.1594/pangaea.788916
_version_ 1766259227187216384

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