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Magnetism of a red soil core derived from basalt, northern Hainan Island, China: Volcanic ash versus pedogenesis

文献类型：期刊论文

作者Liu, Zhifeng1,2; Ma, Jinlong1; Wei, Gangjian1; Liu, Qingsong3,4; Jiang, Zhaoxia5; Ding, Xing1; Peng, Shasha2; Zeng, Ti2; Ouyang, Tingping2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2017-03-01
卷号122期号:3页码:1677-1696
关键词Red Soil Strongly Magnetic Zone Volcanic Ash Pedogenesis Northern Hainan Island
ISSN号2169-9313
DOI10.1002/2016JB013834
文献子类Article
英文摘要Similar to loess-paleosol sequences in northwestern China, terrestrial sedimentary sequences (red soils) in southern China also provide sensitive Quaternary records of subtropical/tropical paleoclimate and paleoenvironment. Compared with red clay sequences originated from eolian dust, red soils derived from bedrock have received little attention. In this study, a long core of red soil derived from weathered basalt in northern Hainan Island, China, was systematically investigated by using detailed magnetic measurements and rare earth element analyses. The results show that an extremely strong magnetic zone with a maximum magnetic susceptibility (>10x10(-5)m(3)kg(-1)) is interbedded in the middle of the core profile. This layer contains a significant amount of superparamagnetic magnetite/maghemite particles that primarily originated from volcanic ash, with secondary contributions from pedogenesis. The former has an average grain size of similar to 19nm with a normal distribution of volume, and the latter has a much wider grain size distribution. The presence of volcanic ash within the red soil indicates that these Quaternary basalts were not formed by continuous volcanic eruptions. Moreover, the magnetic enhancement patterns differ between the upper and lower zones. The upper zone is more magnetically enhanced and experienced higher precipitation and temperature than the lower zone. Discrimination of superparamagnetic particles originating from pedogenic processes and volcanic ash thus provides a sound theoretical base for accurate interpretation of magnetism in red soils in this region.
WOS关键词ISOTHERMAL REMANENT MAGNETIZATION ; LOESS PLATEAU ; ACQUISITION CURVES ; SOUTHERN CHINA ; GRAIN-SIZE ; QUANTIFYING PALEOPRECIPITATION ; DEPENDENT SUSCEPTIBILITY ; FREQUENCY-DEPENDENCE ; MINERAL MAGNETISM ; PARTICLE-SYSTEMS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000399660300006
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Sciences Foundation of China(41325012) ; GIGCAS 135 Project(Y234091001) ; China Postdoctoral Science Foundation(2014M552245) ; National Key Research and Development Program of China(2016YFA0601903) ; Strategic Priority Research Program of Chinese Academy of Science(XDB06030101) ; National Natural Sciences Foundation of China(41325012) ; GIGCAS 135 Project(Y234091001) ; China Postdoctoral Science Foundation(2014M552245) ; National Key Research and Development Program of China(2016YFA0601903) ; Strategic Priority Research Program of Chinese Academy of Science(XDB06030101) ; National Natural Sciences Foundation of China(41325012) ; GIGCAS 135 Project(Y234091001) ; China Postdoctoral Science Foundation(2014M552245) ; National Key Research and Development Program of China(2016YFA0601903) ; Strategic Priority Research Program of Chinese Academy of Science(XDB06030101) ; National Natural Sciences Foundation of China(41325012) ; GIGCAS 135 Project(Y234091001) ; China Postdoctoral Science Foundation(2014M552245) ; National Key Research and Development Program of China(2016YFA0601903) ; Strategic Priority Research Program of Chinese Academy of Science(XDB06030101)
源URL[http://ir.iggcas.ac.cn/handle/132A11/52901]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Wei, Gangjian; Liu, Qingsong
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China
3.Southern Univ Sci & Technol China, Dept Marine Sci & Engn, Shenzhen, Peoples R China
4.Qingdao Natl Oceanog Lab Sci & Technol, Lababoratory Marine Geol, Qingdao, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Zhifeng,Ma, Jinlong,Wei, Gangjian,et al. Magnetism of a red soil core derived from basalt, northern Hainan Island, China: Volcanic ash versus pedogenesis[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2017,122(3):1677-1696.
APA Liu, Zhifeng.,Ma, Jinlong.,Wei, Gangjian.,Liu, Qingsong.,Jiang, Zhaoxia.,...&Ouyang, Tingping.(2017).Magnetism of a red soil core derived from basalt, northern Hainan Island, China: Volcanic ash versus pedogenesis.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,122(3),1677-1696.
MLA Liu, Zhifeng,et al."Magnetism of a red soil core derived from basalt, northern Hainan Island, China: Volcanic ash versus pedogenesis".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 122.3(2017):1677-1696.

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来源：地质与地球物理研究所

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