Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr
Geomagnetic paleointensity dating of South China Sea sediments for the last 130 kyr
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南海沉积物近130 kyr地磁古强度测年
DOI:
10.1016/j.epsl.2009.04.035
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发表时间:
2009-06
影响因子:
5.3
通讯作者:
Yang Jie
中科院分区:
文献类型:
--
作者:
Yang Xiaoqiang;Wu Nengyou;Friedrich Heller;Su Zhihua;Yang Jie
Relative paleointensity records from the northern South China Sea, northwest Pacific Ocean were studied in two gravity piston cores. Continuous mineral magnetic and paleomagnetic measurements were made using discrete sediment samples. Detailed rock magnetic parameters, such as thermomagnetic and high-field hysteresis data, indicate that pseudo-single domain magnetite in a narrow range of grain-size and concentration is the main contributor to the remanent magnetization. The uniform magnetic mineralogy meets the commonly accepted criteria for establishing relative paleointensity records. The relative paleointensity (RPI) curves were constructed by normalizing the natural remanent magnetization (NRM) with isothermal remanent magnetization (IRM), both in the 20–60 mT demagnetization state. Dating constraints have been provided by radiocarbon ages in the upper 400 cm of both cores. Furthermore, we have correlated our paleointensity records with NAPIS-75, S.Atlantic-1089, Sint-200 and NOPAPIS-250 to determine the chronological RPI framework for the South China Sea (SCS-PIS). Although some temporal offsets of paleointensity features between the different records have been recognized, their similar shape suggests that relative paleointensity on the 103–104year scale is globally coherent and can provide an age framework for sediments independent of δ18O ages.
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影响因子:
5.3
作者:
J. Channell;D. Hodell;B. Lehman
通讯作者:
J. Channell;D. Hodell;B. Lehman
影响因子:
2.3
作者:
N. Nowaczyk;T. Frederichs
通讯作者:
N. Nowaczyk;T. Frederichs
DOI:
10.1098/rsta.2000.0571
发表时间:
2000-03
期刊:
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
Carlo La j;C. Kissel;A. Mazaud;J. Channell;J. Beer
通讯作者:
Carlo La j;C. Kissel;A. Mazaud;J. Channell;J. Beer
影响因子:
2.3
作者:
S. Lund;J. Stoner;J. Channell;G. Acton
通讯作者:
S. Lund;J. Stoner;J. Channell;G. Acton
影响因子:
64.8
作者:
B. Linsley
通讯作者:
B. Linsley