Magnetic properties of Holocene core ZK9 in the subaqueous Yangtze delta and their mechanisms and implications
Magnetic properties of Holocene core ZK9 in the subaqueous Yangtze delta and their mechanisms and implications
复制标题
长江三角洲水下全新世核心ZK9磁性及其机制与意义
DOI：
10.1007/s11707-013-0375-x
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发表时间：
2013-09
影响因子：
2
通讯作者：
Wang, Zhanghua
中科院分区：
文献类型：
--
作者：
Liu, Yan;He, Zhongfa;Wang, Zhanghua
We measured the magnetic properties of core ZK9 from the subaqueous Yangtze delta to examine the mechanisms and possibility of using magnetic proxies for the sedimentary environmental evolution controlled by the Holocene sea level. The results showed that low values of most magnetic parameters occurred and pyrite formed in the estuarine sediments during c. 10.5–8.4 cal ka BP, reflecting the predominant early diagenesis in a tidaldominated depositional environment when the sea level rose rapidly. Sharp increases in the values ofχARM(susceptibility of Anhysteresis Remanent Magnetisation),χARM/χ,χARM/SIRM (Saturation Isothermal Remnant Magnetisation) and HIRM (Hard Isothermal Remnant Magnetisation) occurred immediately above the transitional zone from estuarine to deltaic system of c. 8.4–5.9 cal ka BP, which imply accumulation of single-domain magnetite and anti-ferromagnetic minerals. These magnetic properties indicate the enhanced freshwater processes at the core site as a result of the relatively stable sea level and the associated delta progradation since c. 5.9 cal ka BP. Therefore, magnetic proxies ofχARMand HIRM are useful to identify the maximum flooding surface. In addition, the intertidal-subtidal sediment of c. 13.2–10.5 cal ka BP had high values ofχ, SIRM and HIRM, reflecting the features of a coastal environment. The sharp decline of the above parameters from c. 10.5 cal ka BP indicates possibly an event of rapid sea level rise.
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影响因子：
2.9
作者：
Zhongyuan Chen;Y. Saito;K. Hori;Yiwen Zhao;A. Kitamura
通讯作者：
Zhongyuan Chen;Y. Saito;K. Hori;Yiwen Zhao;A. Kitamura
影响因子：
--
作者：
B. Leslie;S. Lund;D. Hammond
通讯作者：
B. Leslie;S. Lund;D. Hammond
影响因子：
2.9
作者：
Congxian Li;J. Zhang;D. Fan;B. Deng
通讯作者：
Congxian Li;J. Zhang;D. Fan;B. Deng
DOI：
10.1023/a:1003122305503
发表时间：
1997-03
期刊：
Geologie en Mijnbouw
影响因子：
--
作者：
M. Dekkers
通讯作者：
M. Dekkers
影响因子：
--
作者：
Zhongyuan Chen;D. Stanley
通讯作者：
Zhongyuan Chen;D. Stanley