IEECAS OpenIR  > 古环境研究室
An investigation of the magnetic carriers and demagnetization characteristics of the Gulang loess section, northwestern Chinese Loess Plateau
Chen, T (Chen, Ting)[ 1,2 ]; Qiang, XK (Qiang, Xiaoke)[ 1 ]; Zhao, H (Zhao, Hui)[ 1,3 ]; Sun, YB (Sun, Youbin)[ 1 ]
2014-04-01
发表期刊GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
卷号15期号:4页码:1600-1616
文章类型期刊论文
摘要

We report the results of a rock magnetic and paleomagnetic investigation of unit L9 of the Gulang (GL) loess section, in the northwestern Chinese Loess Plateau (CLP). We demonstrate that the dominant magnetic remanence carriers are coarse-grained pseudo single-domain/multidomain magnetite particles, and hematite. The application of either thermal (THD) or alternating-field demagnetization (AFD) yielded several normal polarity intervals interbedded with intervals of reversed polarity, but which cannot be correlated with standard geomagnetic polarity time scales. A greater number of normal polarity intervals, however, were evident after THD than after AFD. We propose that the normal polarities are either the result of overprinting of a viscous remanent magnetization (VRM) carried by coarse magnetite particles on the original depositional remanent magnetization (DRM); or that they represent genuine geomagnetic excursions (such as the Kamikatsura and Santa Rosa excursions) which are difficult to identify. In addition, we propose that in the case of the GL loess section, the effect of thermal demagnetization tails of a VRM is a possible reason why THD treatment yielded a greater number of normal polarity intervals than does AFD. However, reversed polarities obtained by either THD or AFD may be credible for sedimentary intervals with a relatively high content of hematite particles which preserve the primary DRM. Although numerous studies have proposed that THD provides more reliable paleomagnetic directions for loess sediments from the CLP, our results suggest that careful attention needs to be paid to the type of demagnetization method chosen, especially in the case of coarse-grained loess deposits.

DOI10.1002/2014GC005268
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9689
专题古环境研究室
通讯作者Qiang, XK (Qiang, Xiaoke)[ 1 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an, China;
2.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China;
3.School of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式
GB/T 7714
Chen, T ,Qiang, XK ,Zhao, H ,et al. An investigation of the magnetic carriers and demagnetization characteristics of the Gulang loess section, northwestern Chinese Loess Plateau[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2014,15(4):1600-1616.
APA Chen, T ,Qiang, XK ,Zhao, H ,&Sun, YB .(2014).An investigation of the magnetic carriers and demagnetization characteristics of the Gulang loess section, northwestern Chinese Loess Plateau.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,15(4),1600-1616.
MLA Chen, T ,et al."An investigation of the magnetic carriers and demagnetization characteristics of the Gulang loess section, northwestern Chinese Loess Plateau".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 15.4(2014):1600-1616.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
An investigation of (1469KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, T (Chen, Ting)[ 1,2 ]]的文章
[Qiang, XK (Qiang, Xiaoke)[ 1 ]]的文章
[Zhao, H (Zhao, Hui)[ 1,3 ]]的文章
百度学术
百度学术中相似的文章
[Chen, T (Chen, Ting)[ 1,2 ]]的文章
[Qiang, XK (Qiang, Xiaoke)[ 1 ]]的文章
[Zhao, H (Zhao, Hui)[ 1,3 ]]的文章
必应学术
必应学术中相似的文章
[Chen, T (Chen, Ting)[ 1,2 ]]的文章
[Qiang, XK (Qiang, Xiaoke)[ 1 ]]的文章
[Zhao, H (Zhao, Hui)[ 1,3 ]]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。