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Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures

文献类型：期刊论文

作者Sun, Wenqing1,2; Dai, Lidong1; Li, Heping1; Hu, Haiying1,3; Jiang, Jianjun1,2; Hui, Keshi1,2
刊名MINERALOGY AND PETROLOGY
出版日期2017-12-01
卷号111期号:6页码:853-863
关键词High Temperature And High Pressure Electrical Conductivity Phyllite Dehydration Subduction Zone
ISSN号0930-0708
DOI10.1007/s00710-017-0494-2
文献子类Article
英文摘要The electrical conductivity of phyllite (measured in situ at 0.5-2.5 GPa and 773-1173 K) increases with increasing temperature, satisfying an Arrhenius relation. Dehydration of phyllite at 973-1173 K enormously enhances its electrical conductivity, and the activation enthalpy (0.64-0.81 eV) remains almost constant before and after dehydration. The inflection point of the relationship between electrical conductivity and temperature is used to determine the dehydration temperature (T (d) ) at each considered pressure (P), leading to the following relationship: T (d) = 1181 - 100P. The derived relation implies that the dehydration depths of hot and cold subduction zones are similar to 70 and similar to 129 km respectively, which are both close to the depths of arc magma source regions, thereby indicating that the dehydration of pelite significantly influences the generation of melt in subduction zones.
WOS关键词LOWER CONTINENTAL-CRUST ; IMPEDANCE SPECTROSCOPY ; SUBDUCTION ZONES ; OXYGEN FUGACITY ; CHEMICAL-COMPOSITION ; HYDROUS OLIVINE ; WATER-CONTENT ; MANTLE ; FLUID ; WADSLEYITE
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000416061000006
出版者SPRINGER WIEN
资助机构Chinese Academy of Sciences(XDB 18010401) ; Chinese Academy of Sciences(XDB 18010401) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; "135" Program of the Institute of Geochemistry of CAS ; "135" Program of the Institute of Geochemistry of CAS ; Hundred Talents Program of CAS ; Hundred Talents Program of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF of China(41474078 ; NSF of China(41474078 ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; 41304068 ; 41304068 ; 41174079) ; 41174079) ; Chinese Academy of Sciences(XDB 18010401) ; Chinese Academy of Sciences(XDB 18010401) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; "135" Program of the Institute of Geochemistry of CAS ; "135" Program of the Institute of Geochemistry of CAS ; Hundred Talents Program of CAS ; Hundred Talents Program of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF of China(41474078 ; NSF of China(41474078 ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; 41304068 ; 41304068 ; 41174079) ; 41174079) ; Chinese Academy of Sciences(XDB 18010401) ; Chinese Academy of Sciences(XDB 18010401) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; "135" Program of the Institute of Geochemistry of CAS ; "135" Program of the Institute of Geochemistry of CAS ; Hundred Talents Program of CAS ; Hundred Talents Program of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF of China(41474078 ; NSF of China(41474078 ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; 41304068 ; 41304068 ; 41174079) ; 41174079) ; Chinese Academy of Sciences(XDB 18010401) ; Chinese Academy of Sciences(XDB 18010401) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; Key Research Projects of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-DQC009) ; "135" Program of the Institute of Geochemistry of CAS ; "135" Program of the Institute of Geochemistry of CAS ; Hundred Talents Program of CAS ; Hundred Talents Program of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; NSF of China(41474078 ; NSF of China(41474078 ; Open Foundation of Institute of Geology and Geophysics of CAS ; Open Foundation of Institute of Geology and Geophysics of CAS ; 41304068 ; 41304068 ; 41174079) ; 41174079)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82064]  
专题中国科学院地质与地球物理研究所
通讯作者Dai, Lidong
作者单位1.Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Wenqing,Dai, Lidong,Li, Heping,et al. Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures[J]. MINERALOGY AND PETROLOGY,2017,111(6):853-863.
APA Sun, Wenqing,Dai, Lidong,Li, Heping,Hu, Haiying,Jiang, Jianjun,&Hui, Keshi.(2017).Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures.MINERALOGY AND PETROLOGY,111(6),853-863.
MLA Sun, Wenqing,et al."Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures".MINERALOGY AND PETROLOGY 111.6(2017):853-863.

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来源：地质与地球物理研究所

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