AMS 14C Study of Transient Events and of the Ventilation Rate of the Pacific Intermediate Water During the Last Deglaciation

14 C analysis of monospecific samples of planktonic and benthic foraminifera were performed in deep-sea sediment cores from the Atlantic and Pacific Oceans by Accelerator Mass Spectrometry (AMS). These measurements demonstrate that the Younger Dryas cold event, first described in the north Atlantic,...

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Bibliographic Details
Published in:Radiocarbon
Main Authors: Duplessy, Jean-Claude, Arnold, Maurice, Bard, Edouard, Juillet-Leclerc, Anne, Kallel, Nejib, Labeyrie, Laurent
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1989
Subjects:
General Earth and Planetary Sciences
Archeology
Pacific
North Atlantic
Online Access:http://dx.doi.org/10.1017/s003382220001208x
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003382220001208X
Description
Summary:14 C analysis of monospecific samples of planktonic and benthic foraminifera were performed in deep-sea sediment cores from the Atlantic and Pacific Oceans by Accelerator Mass Spectrometry (AMS). These measurements demonstrate that the Younger Dryas cold event, first described in the north Atlantic, is also present at the same time in the north Pacific Ocean. The comparison of the 14 C ages of planktonic and benthic foraminifera from the same sediment level in two Pacific cores shows that the ventilation time of the Pacific Ocean was greater than today during the last ice age, but significantly less than today during the deglaciation.

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