The influences of carbonate melt on the electrical conductivity for pyrolite at high temperature and high pressure

doi:10.6038/cjg2019M0238

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	The influences of carbonate melt on the electrical conductivity for pyrolite at high temperature and high pressure
	Liu BingBing 1,2; Huang XiaoGe 1; Li Xian 1,2; Chen ZuAn 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2019-02-01
卷号	62 期号:2 页码:544-557
关键词	Electrical conductivity Carbonate melt Pyrolite Kimberlite magma
ISSN号	0001-5733
DOI	10.6038/cjg2019M0238
英文摘要	In order to obtain the electrical conductivity of partially molten pyrolite with carbonate and make clear the causes of formation of kimberlite magma and high conductivity zone at depth of about 80 similar to 120 km of Lac de Gras area in Central Slave Craton, we measured the electrical conductivity on pyrolite with carbonate melt at pressure of 1.0 similar to 3.0 GPa, temperature of 673 similar to 1873 K and frequency ranges of 10(-1)similar to 10(6) Hz using Solartron-1260 impedance/Gain-Phase analyzer with DS 3600 t multi-anvil apparatus. The experimental results show that electrical conductivity of partial melting samples is mainly affected by temperature and compositions. The electrical conductivities of samples containing Na(2)CO(3 )are significantly higher than those of other samples containing CaCO3 and MORB below 1023 K. The electrical conductivities of partially molten Na3CO3-bearing pyrolite hardly increase when increasing temperature at 1073 similar to 273 K. It reveals that carbonated silicate melt has constant electrical conductivity during the formation of kimberlite magma. According to previous experimental data, the high conductivity phenomenon in Lac de Gras area in Central Slave Craton at about 80 similar to 120 km may be explained by partially molten pyrolite containing carbonated silicate melt. It is speculated that less than 2 wt. % carbonate melts occur in the kimberlite magma.
WOS关键词	PHASE-RELATIONS ; LITHOSPHERE BENEATH ; BULK COMPOSITION ; KAAPVAAL CRATON ; MIDOCEAN RIDGE ; WATER-CONTENT ; MANTLE ; KIMBERLITES ; BASALT ; OLIVINE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000457642800009
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90541]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Huang XiaoGe
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu BingBing,Huang XiaoGe,Li Xian,et al. The influences of carbonate melt on the electrical conductivity for pyrolite at high temperature and high pressure[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(2):544-557.
APA	Liu BingBing,Huang XiaoGe,Li Xian,&Chen ZuAn.(2019).The influences of carbonate melt on the electrical conductivity for pyrolite at high temperature and high pressure.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(2),544-557.
MLA	Liu BingBing,et al."The influences of carbonate melt on the electrical conductivity for pyrolite at high temperature and high pressure".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.2(2019):544-557.