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A comparison of heavy mineral assemblage between the loess and theRed Clay sequences on the Chinese Loess Plateau
Peng,WB(Peng,Wenbin)1; Wang,Z(Wang, Zhao)1; Song,YG(Song,Yougui)2; Pfaff,K(Pfaff,Katharina)3; Luio,Z(Luo,Zeng)1; Nie,JS(Nie,Junsheng)1; Chen,WH(Chen,Wenhan)1; Nie,Junsheng
2016-06
发表期刊Aeolian Research
卷号21期号:2016页码:87-91
文章类型期刊论文
摘要QEMSCAN-based (Quantitative Evaluation of Minerals by Scanning Electron Microscopy) heavy mineral analysis has recently been demonstrated an efficient way to allow a rapid extraction of provenance information from sediments. However, one key issue to correctly obtain a provenance signal using this technique is to clearly separate effects of diagenetic alteration on heavy minerals in sediments, especially in fine-grained loess. Here we compare heavy mineral assemblages of bottom Quaternary loess (L33) and upper Pliocene Red Clay of three sites on the Chinese Loess Plateau (CLP). Two sites (Chaona and Luochuan) with similar modern climate conditions show similar heavy mineral assemblages but contain much less of the unstable heavy mineral amphibole than the drier Xifeng site. This result provides strong evidence supporting that climate-caused diagenesis is an important factor controlling heavy mineral assemblages of fine-grained loess. However, heavy mineral assemblages are similar for loess and paleosol layers deposited after 0.5 Ma on the Chinese Loess Plateau regardless of climate differences, suggesting that time is also a factor controlling heavy mineral assemblages of loess and Red Clay. Our high resolution sampling of the upper Miocene-Pliocene Chaona Red Clay sequence reveals similar heavy mineral compositions with a minor amphibole content, different from the drier Xifeng site results of the same age. This result indicates that the monsoonal climate pattern might have been maintained since the late Miocene. Furthermore, it indicates that the heavy mineral method is promising in tracing provenance for sites northwest of the Xifeng site on the Loess Plateau.
关键词Heavy Mineral Qemscan Loess Red Clay Provenance
DOI10.1016/j.aeolia.2016.02.004
收录类别SCI
所属项目编号2010CB403301 ; 2013CB956400 ; XDB03020400 ; 41422204 ; 41172329 ; 41290253 ; lzujbky-2015219
语种英语
项目资助者(973) National BasicResearch Program of China ; (973) National BasicResearch Program of China ; Strategic Priority Research Program of theChinese Academy of Sciences ; Strategic Priority Research Program of theChinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental ResearchFunds for the Central Universities ; Fundamental ResearchFunds for the Central Universities
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5870
专题古环境研究室
通讯作者Nie,Junsheng
作者单位1.Key Laboratory of Western China’s Environment Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, P. O. Box 17, Xi’an 710061, China
3.Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA
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GB/T 7714
Peng,WB,Wang,Z,Song,YG,et al. A comparison of heavy mineral assemblage between the loess and theRed Clay sequences on the Chinese Loess Plateau[J]. Aeolian Research,2016,21(2016):87-91.
APA Peng,WB.,Wang,Z.,Song,YG.,Pfaff,K.,Luio,Z.,...&Nie,Junsheng.(2016).A comparison of heavy mineral assemblage between the loess and theRed Clay sequences on the Chinese Loess Plateau.Aeolian Research,21(2016),87-91.
MLA Peng,WB,et al."A comparison of heavy mineral assemblage between the loess and theRed Clay sequences on the Chinese Loess Plateau".Aeolian Research 21.2016(2016):87-91.
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