Benthic and planktonic foraminifera of sediment core GIK17957-2

A detailed age model for core 17957-2 of the southern South China Sea was developed based on delta18O, coarse fraction, magnetostratigraphy, and biostratigraphy for the last 1500 kyr. The delta18O record has clear ~100-kyr cycles after the Mid-Pleistocene Revolution (MPR) at the entrance of marine i...

Full description

Bibliographic Details
Main Authors: Jian, Zhimin, Wang, Pinxian, Chen, Min-Te, Li, Bill, Zhao, Q H, Bühring, Christian, Laj, Carlo E, Lin, Hui-Ling, Pflaumann, Uwe, Bian, Y, Wang, Rujian, Cheng, Xinrong
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2000
Subjects:
GIK/IfG
GIK17957-2
Gravity corer (Kiel type)
Institute for Geosciences
Christian Albrechts University
Kiel
MONITOR MONSUN
SL
SO95
Sonne
South China Sea
Planktonic foraminifera
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.736629
https://doi.org/10.1594/PANGAEA.736629
Description
Summary:A detailed age model for core 17957-2 of the southern South China Sea was developed based on delta18O, coarse fraction, magnetostratigraphy, and biostratigraphy for the last 1500 kyr. The delta18O record has clear ~100-kyr cycles after the Mid-Pleistocene Revolution (MPR) at the entrance of marine isotopic stage (MIS) 22. Planktonic foraminifera responded to the MPR immediately, showing the increased sea surface temperature (SST) and dissolution after the MPR. Benthic foraminifera did not respond to it until the Brunhes/Matuyama boundary. Since the MPR, the depth of thermocline gradually became shallower until MISs 6-5. This major change within MISs 6-5 was also reflected in the decreased SSTs and increased productivity and Deep Water Mass. Thus two major Pleistocene paleoceanographic changes were found: One was around the MPR; the other occurred within MISs 6-5, which speculatively might be ascribed to the reorganization of surface and deep circulation, possibly induced by tectonic forces.

Similar Items