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Magnetic study of the UHP eclogites from the Chinese Continental Scientific Drilling (CCSD) Project

文献类型：期刊论文

作者Liu, Qingsheng1; Liu, Qingsong2; Yang, Tao3; Zeng, Qingli1; Zheng, Jianping4; Luo, Yinhe1; Qiu, Ning1; Xu, Haijun4; Jin, Zhenmin4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2009-02-24
卷号114
ISSN号2169-9313
DOI10.1029/2008JB005917
文献子类Article
英文摘要To establish the relationships between rock magnetism of eclogites and the corresponding retrograded metamorphic processes, this study integrated both rock magnetism and metamorphic petrology of 171 eclogite samples with different degree of retrograded metamorphism at the depth range of 100-2050 m of the main hole of the Chinese Continental Scientific Drilling (CCSD) Project, located in the Sulu ultrahigh pressure (UHP) metamorphic belt, eastern China. Results show that the average density is a suitable indicator for the degree of the retrograded metamorphism. Opaque minerals in variable eclogites are mainly magnetite, ilmenite, pyrite, and hematite. With increasing the metamorphic retrogression, the concentration of opaque minerals generally increases; however, magnetic properties of eclogites first increase from well-preserved eclogite to partially retrogressed eclogites because of the neoformation of coarse grained magnetite particles, and then decrease for the completely retrogressed eclogites because of the consumption of the magnetite particles and the formation of weakly magnetic minerals (e. g., hematite). These processes can be summarized as garnet + omphacite + rutile + SiO2 + H2O -> amphibole + plagioclase + magnetite + ilmenite -> amphibole + epidote + hematite + ilmenite. The retrograded metamorphic eclogites with elevated magnetic properties take up 25% of all rocks and thus are one of major magnetic rocks in the CCSD main hole located in the Sulu UHP area. Therefore the significant volumes of retrograded eclogites may account for the magnetic anomalies flanking the northeastern part of the Sulu UHP metamorphic belt.
WOS关键词NATURAL REMANENT MAGNETIZATION ; LOWER CRUSTAL MAGNETIZATION ; EASTERN CHINA ; HEMATITE-ILMENITE ; IVREA ZONE ; PRESSURE ECLOGITES ; METAMORPHIC ROCKS ; ZK703 DRILLHOLE ; SOLID-SOLUTION ; CROSS-SECTION
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000263737100001
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China(40474025 ; National Natural Science Foundation of China(40474025 ; Major State Basic Research Development Program of China(2003CB716506) ; Major State Basic Research Development Program of China(2003CB716506) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 90714002 ; 90714002 ; 40821091) ; 40821091) ; National Natural Science Foundation of China(40474025 ; National Natural Science Foundation of China(40474025 ; Major State Basic Research Development Program of China(2003CB716506) ; Major State Basic Research Development Program of China(2003CB716506) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 90714002 ; 90714002 ; 40821091) ; 40821091) ; National Natural Science Foundation of China(40474025 ; National Natural Science Foundation of China(40474025 ; Major State Basic Research Development Program of China(2003CB716506) ; Major State Basic Research Development Program of China(2003CB716506) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 90714002 ; 90714002 ; 40821091) ; 40821091) ; National Natural Science Foundation of China(40474025 ; National Natural Science Foundation of China(40474025 ; Major State Basic Research Development Program of China(2003CB716506) ; Major State Basic Research Development Program of China(2003CB716506) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 90714002 ; 90714002 ; 40821091) ; 40821091)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70560]  
专题中国科学院地质与地球物理研究所
通讯作者Liu, Qingsheng
作者单位1.China Univ Geosci, Dept Geophys, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism & Geochronol Lab, Beijing 100029, Peoples R China
3.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
4.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Qingsheng,Liu, Qingsong,Yang, Tao,et al. Magnetic study of the UHP eclogites from the Chinese Continental Scientific Drilling (CCSD) Project[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2009,114.
APA Liu, Qingsheng.,Liu, Qingsong.,Yang, Tao.,Zeng, Qingli.,Zheng, Jianping.,...&Jin, Zhenmin.(2009).Magnetic study of the UHP eclogites from the Chinese Continental Scientific Drilling (CCSD) Project.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,114.
MLA Liu, Qingsheng,et al."Magnetic study of the UHP eclogites from the Chinese Continental Scientific Drilling (CCSD) Project".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 114(2009).

入库方式： OAI收割

来源：地质与地球物理研究所

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