气候变化领域集成服务门户(CCPortal): Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems

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DOI	10.1016/j.scib.2020.06.017
	Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems
	Wang S.; Sun W.; Huang J.; Zhai S.; Li H.
发表日期	2020
ISSN	20959273
起始页码	1767
结束页码	1774
卷号	65 期号:20
英文摘要	Seafloor hydrothermal chimneys are significant metal resources and have fundamental effects on marine chemistry balance. Previous studies on growth of the chimneys focused on mineral composition and elemental distribution in chimney walls, but the isotopic composition of different elements and their correlations remain poorly understood. Here, we report lateral Fe and S isotopes from sulfides across a chimney wall in detail from the Deyin-1 hydrothermal field (DHF) on the South Mid-Atlantic Ridge. Pyrite was characterized by increases in both δ34S and δ56Fe from the exterior to the interior within the chimney wall, which is likely related to enhanced S and Fe isotope fractionation between pyrite and fluids derived from the temperature gradient. Furthermore, δ56Fe displayed a well-defined, linear, positive correlation with δ34S in pyrite from the DHF as well as in pyrite from other areas. A model of hydrothermal pyrite formation suggests that, under conditions with uniform hydrothermal fluid, different temperatures and similar pyrite–fluid exchange degrees could result in the observed linear relationships between δ34S and δ56Fe. The regular and coupled Fe–S isotope variations within the chimney wall efficiently constrain the process of hydrothermal sulfide formation. © 2020 Science China Press
关键词	Iron isotope Sulfide chimney Sulfur isotope Temperature
英文关键词	Isotopes; Pyrites; Sulfur compounds; Elemental distribution; Hydrothermal fluids; Isotopic composition; Linear relationships; Mid Atlantic Ridge; Mineral composition; Positive correlations; Seafloor hydrothermal systems; Chimneys
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207213
作者单位	Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Submarine Geosciences and Prospection of Ministry of Education, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Submarine Geoscience, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China
推荐引用方式 GB/T 7714	Wang S.,Sun W.,Huang J.,等. Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems[J],2020,65(20).
APA	Wang S.,Sun W.,Huang J.,Zhai S.,&Li H..(2020).Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems.Science Bulletin,65(20).
MLA	Wang S.,et al."Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems".Science Bulletin 65.20(2020).