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Thermal magnetic behaviour of Al-substituted haematite mixed with clay minerals and its geological significance

文献类型：期刊论文

作者Jiang, Zhaoxia1; Liu, Qingsong1; Zhao, Xiangyu1; Jin, Chunsheng1; Liu, Caicai2; Li, Shihu1
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2015
卷号200期号:1页码:130-143
关键词Environmental Magnetism Magnetic Mineralogy And Petrology Rock And Mineral Magnetism
DOI10.1093/gji/ggu377
文献子类Article
英文摘要Clay minerals and Al-substituted haematite (Al-hm) usually coexist in soils and sediments. However, effects of clay minerals on Al-hm during thermal magnetic measurements in argon environment have not been well studied. In order to quantify such effects, a series of Al-hm samples were synthesized, and were then mixed with clay minerals (illite, chlorite, kaolinite and Ca-montmorillonite). The temperature dependence of magnetic susceptibility curves in an argon environment showed that Al-substituted magnetite was produced during the thermal treatment via the reduction of Al-hm by the clay mineral, which leads to a significant magnetic enhancement of the thermal products. In addition, the reductive capacity varies among different types of clay minerals, that is, illite > chlorite > kaolinite > Ca-montmorillonite. Furthermore, the iron content in the clay minerals and Al content of Al-hm are two predominant factors controlling the reduced haematite content. The iron is released from the clay minerals and provides the reducing agent, while Al decreases the crystallinity of haematite and thus facilitates the chemical reaction. Therefore, the thermal magnetic measurements can be used to quantify the Al content of Al-hm in natural samples. Our study provides significant information for palaeomagnetism and environmental magnetism studies, such as thermal magnetic analysis and palaeomagnetic intensity reconstruction using ancient pottery and kilns.
WOS关键词TEMPERATURE-DEPENDENT SUSCEPTIBILITY ; CHINESE LOESS PLATEAU ; OCEANIC RED BEDS ; REMANENT MAGNETIZATION ; IRON ; GOETHITE ; ORIGIN ; REMAGNETIZATION ; ENVIRONMENTS ; LITHOFACIES
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000350041600011
资助机构Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; 41025013) ; 41025013) ; 41025013) ; 41025013) ; Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; Natural Science Foundation of China(41374073 ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDB03020102) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; National Basic Research Program of China(2013CB956403) ; 41025013) ; 41025013) ; 41025013) ; 41025013)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62541]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Zhaoxia,Liu, Qingsong,Zhao, Xiangyu,et al. Thermal magnetic behaviour of Al-substituted haematite mixed with clay minerals and its geological significance[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2015,200(1):130-143.
APA Jiang, Zhaoxia,Liu, Qingsong,Zhao, Xiangyu,Jin, Chunsheng,Liu, Caicai,&Li, Shihu.(2015).Thermal magnetic behaviour of Al-substituted haematite mixed with clay minerals and its geological significance.GEOPHYSICAL JOURNAL INTERNATIONAL,200(1),130-143.
MLA Jiang, Zhaoxia,et al."Thermal magnetic behaviour of Al-substituted haematite mixed with clay minerals and its geological significance".GEOPHYSICAL JOURNAL INTERNATIONAL 200.1(2015):130-143.

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来源：地质与地球物理研究所

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