Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures
文献类型:期刊论文
作者 | Wenqing Sun; Lidong Dai; Heping Li; Haiying Hu; Jianjun Jiang; Keshi Hui |
刊名 | Mineralogy and Petrology |
出版日期 | 2017 |
卷号 | 111期号:6页码:853-863 |
关键词 | High Temperature And High Pressure Electrical Conductivity Phyllite Dehydration Subduction Zone |
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. |
语种 | 英语 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/8012] |
专题 | 地球化学研究所_地球内部物质高温高压实验室 |
作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 3.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China |
推荐引用方式 GB/T 7714 | Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Jianjun Jiang;Keshi Hui. Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures[J]. Mineralogy and Petrology,2017,111(6):853-863. |
APA | Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Jianjun Jiang;Keshi Hui.(2017).Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures.Mineralogy and Petrology,111(6),853-863. |
MLA | Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Jianjun Jiang;Keshi Hui."Effect of dehydration on the electrical conductivity of phyllite at high temperatures and pressures".Mineralogy and Petrology 111.6(2017):853-863. |
入库方式: OAI收割
来源:地球化学研究所
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