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Mineral magnetic investigation of the Talede loess-palaeosol sequence since the last interglacial in the Yili Basin in the Asian interior

文献类型：期刊论文

作者Liu, Yong1,2; Shi, Zhengtao1; Deng, Chenglong3; Su, Huai1; Zhang, Wenxiang1
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2012-07-01
卷号190期号:1页码:267-277
关键词Environmental magnetism Rock and mineral magnetism Asia
ISSN号0956-540X
DOI10.1111/j.1365-246X.2012.05527.x
文献子类Article
英文摘要The loesspalaeosol deposit in the Asian interior is sensitive to the evolution of the Westerlies, thus providing a good opportunity to investigate regional palaeoenvironmental evolution and its relationship with global climatic changes. Multiparameter mineral magnetic investigations have been conducted on the Talede section in the Yili Basin, Asian interior. Our study finds that: (1) loess samples have higher concentration magnetic minerals than palaeosols, though the magnetic mineral composition is similar (ferrimagnetic magnetite, antiferromagnetic hematite and lepidocrocite). (2) Large pseudo-single domain (PSD) and multidomain (MD)-like grains dominate both in loess and palaeosols. However, magnetic mineral grains in loess are much coarser than those in the palaeosols. (3) Palaeosols contain approx 30 per cent more amount of hematite than the loess samples. The frequency-dependent susceptibility of both loess and palaeosols is very low, indicating the small amount of super-paramagnetic grains. And the higher ?fd per cent values of palaeosols also reveal that palaeosols have more amounts of ultrafine magnetic grains than loess. The magnetic variations in part (1) and (2) can be well explained by the wind vigour model, but the observed enrichment of hematite and ultrafine magnetic grains in palaeosols also reveals the first onset of pedogenic enhancement. Therefore, the Talede section could be seen as an end-member of the classic Chinese Loess Plateau (CLP) magnetic enhancement model.
WOS关键词TEMPERATURE-DEPENDENT SUSCEPTIBILITY ; CHINESE LOESS ; PALEOCLIMATIC IMPLICATIONS ; PLEISTOCENE LOESS ; ROCK MAGNETISM ; GRAIN-SIZE ; PLATEAU ; RECORD ; DEPOSITS ; CLIMATE
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000305080900019
出版者WILEY-BLACKWELL
资助机构National Natural Science Foundation of China(40871018) ; National Natural Science Foundation of China(40871018) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; National Natural Science Foundation of China(40871018) ; National Natural Science Foundation of China(40871018) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; National Natural Science Foundation of China(40871018) ; National Natural Science Foundation of China(40871018) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; National Natural Science Foundation of China(40871018) ; National Natural Science Foundation of China(40871018) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812) ; Opening Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences(SKLLQG0812)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84148]  
专题中国科学院地质与地球物理研究所
通讯作者Liu, Yong
作者单位1.Yunnan Normal Univ, Coll Tourism & Geog Sci, Kunming, Peoples R China
2.Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Yong,Shi, Zhengtao,Deng, Chenglong,et al. Mineral magnetic investigation of the Talede loess-palaeosol sequence since the last interglacial in the Yili Basin in the Asian interior[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2012,190(1):267-277.
APA Liu, Yong,Shi, Zhengtao,Deng, Chenglong,Su, Huai,&Zhang, Wenxiang.(2012).Mineral magnetic investigation of the Talede loess-palaeosol sequence since the last interglacial in the Yili Basin in the Asian interior.GEOPHYSICAL JOURNAL INTERNATIONAL,190(1),267-277.
MLA Liu, Yong,et al."Mineral magnetic investigation of the Talede loess-palaeosol sequence since the last interglacial in the Yili Basin in the Asian interior".GEOPHYSICAL JOURNAL INTERNATIONAL 190.1(2012):267-277.

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来源：地质与地球物理研究所

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