Author:
Andree Michael,Oeschger Hans,Broecker W S,Beavan Nancy,Mix Alan,Bonani Georges,Hofmann H J,Morenzoni Elvezio,Nessi Marzio,Suter Martin,Wölfli Willy
Abstract
14C ages were determined on samples of foraminifera separated from cores from three areas of the tropical Pacific (East Pacific Rise, Oontong Java Plateau, and South China Sea). Analyses were made on four planktonic species and on mixed benthics. The purpose of the multiple analysis on planktonic species is to assess the importance of artifacts resulting from the bioturbation-abundance change couple, from the bioturbation-partial dissolution couple and from redeposition by bottom currents. The goal is to use the benthic-planktonic age difference as a means of establishing changes in deep sea ventilation rate over the past 25,000 years. Results of a part of this work are presented in this paper.
Publisher
Cambridge University Press (CUP)
Subject
General Earth and Planetary Sciences,Archaeology
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