NDLI: Oxygen and carbon isotope records of calcareous nannofossils for the past 1 Ma in the southern South China Sea

Content Provider	Springer Nature Link
Author	Liu, Chuanlian Cheng, Xinrong Zhu, Youhua Tian, Jun Xia, Peifen
Copyright Year	2002
Abstract	Oxygen and carbon isotopic analyses have been carried out on calcareous nannofossils from ODP Site 1143 in the southern South China Sea. The results demonstrate that the δ$^{18}$O values of calcareous nannofossils for the past 1 Ma vary systematically with those of planktonic and benthic foraminifera from the same site. But the average δ$^{18}$O value of nannofossils is 1.869‰ higher than that of planktonic foraminifera, and is 3.855‰ lower than that of benthic foarminifera. There are systematic differences between the δ$^{13}$C values of nannofossils, planktonic foarminifera and benthic foraminifera. The average δ$^{13}$C of nannofossils is 0.756‰ higher than that of benthic foraminifera, and is 0.460‰ lower than that of planktonic foraminifera. The δ$^{13}$C values of nannofossils exhibit a significant positive shift beginning near isotope stage 14 and lasting until stage 8. This study also finds that there is a close ralationship between the δ$^{13}$C of nannofossils and the percentage of Florisphaera profunda. This implies that the δ$^{13}$C of nannofossils can be used as an indicator of sea water surface paleoproductivity.
Starting Page	798
Ending Page	803
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	47
Issue Number	10
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2002-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	oxygen and carbon isotope calcareous nannofossil South China Sea Life Sciences Physics Chemistry/Food Science Science Geosciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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