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	Subduction Factory:New Genesis of Abiotic Hydrocarbons and Diamond(Graphite) to the Upper Mantle; Subduction Factory:New Genesis of Abiotic Hydrocarbons and Diamond(Graphite) to the Upper Mantle
	TAO Renbiao ; ZHANG Lifei ; LIU Xi ; LIU Jinzhong ; FEI Yingwei
	2013
关键词	Abiotic hydrocarbons Dissolution Disproportionate Fe-bearing carbonate Subduction Upper mantle Carbon Abiotic hydrocarbons Dissolution Disproportionate Fe-bearing carbonate Subduction Upper mantle Carbon
英文摘要	We report the discovery of graphite-bearing fluid inclusions coexisting with ankerite and magnetite in carbonated eclogite from the low-temperature and ultrahigh-pressure oceanic subduction zone of Southwestern Tianshan,China.However,mechanisms and conditions permitting graphite precipitation from Cbearing fluids within subduction zone are still controversial.Therefore,we performed experiments at high pressure and temperature at the aim to better understand possible mechanisms that might be invoked to explain our finding.Abiotic hydrocarbons and graphite were observed after quenched experiments using piston cylinder and large volume press at pressures corresponding to upper mantle conditions along subduction zone.Gas chromatograph technique was employed to analyze the composition of coexisting fluids.Based on the experimental and geological observation,we derive the following generalized reaction for graphite and hydrocarbons formation:Ankerite_(highFe)+water=ankerite_(lowFe)+magnetite+graphite+carbon dioxide...; We report the discovery of graphite-bearing fluid inclusions coexisting with ankerite and magnetite in carbonated eclogite from the low-temperature and ultrahigh-pressure oceanic subduction zone of Southwestern Tianshan,China.However,mechanisms and conditions permitting graphite precipitation from Cbearing fluids within subduction zone are still controversial.Therefore,we performed experiments at high pressure and temperature at the aim to better understand possible mechanisms that might be invoked to expl; 中国地质学会、美国地质学会; 1; Vol.87
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/480232]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	TAO Renbiao,ZHANG Lifei,LIU Xi,et al. Subduction Factory:New Genesis of Abiotic Hydrocarbons and Diamond(Graphite) to the Upper Mantle, Subduction Factory:New Genesis of Abiotic Hydrocarbons and Diamond(Graphite) to the Upper Mantle. 2013-01-01.

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