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Noble gases in sulfide deposits of modern deep-sea hydrothermal systems: Implications for heat fluxes and hydrothermal fluid processes
Zeng, Zhigang1,3; Niedermann, Samuel2; Chen, Shuai1; Wang, Xiaoyuan1; Li, Zhaoxue1
2015-08-20
发表期刊CHEMICAL GEOLOGY
卷号409期号:2015页码:1-11
文章类型Article
摘要Studies of noble gases in seafloor sulfide deposits are an important tool for understanding the origin of oreforming fluids, both enabling the determination of noble gas sources and revealing the degree of fluid-rock interaction and mantle degassing. The noble gas concentrations and isotopic compositions of 27 sulfide, 3 sulfate, and 2 opal mineral aggregate samples have been studied in different hydrothermal fields from the East Pacific Rise, Mid-Atlantic Ridge, Central Indian Ridge, Southwest Indian Ridge, and North Fiji Back-Arc Basin. The helium concentrations and isotopic ratios in the sulfide aggregate samples are variable (He-4 0.12 to 22 x 10(-8) cm(3) STP/g; He-3/He-4 similar to 0.6 to 10.4 R-a), and most of the sulfide helium concentrations are higher than those in the opal mineral samples (He-4 0.017 and 0.028 x 10(-8) cm(3) STP/g), suggesting that the low-temperature fluids have lost their mantle helium during cooling. The helium of high (>7 Ra), medium (1-7 Ra), and low (approximate to 1 Ra) He-3/He-4 ratio samples is derived mainly from the MORB or OIB mantle by magma degassing, from mixing between hydrothermal fluid and seawater during ore-forming processes, and from ambient seawater, respectively. The high He-3/He-4 ratios (>7 Ra) of sulfides imply that high-temperature sulfides retain the helium isotopic compositions of the primary hydrothermal fluid, whereas low-temperature sulfides, sulfates, and opal minerals do not.
关键词Noble Gases Massive Sulfides Sulfates Opal Seafloor Hydrothermal Systems
DOI10.1016/j.chemgeo.2015.05.007
收录类别SCI
语种英语
WOS记录号WOS:000358525500001
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/49616
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Seafloor Hydrothermal Act Lab, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Deutsch GeoForschungsZentrum, D-14473 Potsdam, Germany
3.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266071, Peoples R China
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GB/T 7714
Zeng, Zhigang,Niedermann, Samuel,Chen, Shuai,et al. Noble gases in sulfide deposits of modern deep-sea hydrothermal systems: Implications for heat fluxes and hydrothermal fluid processes[J]. CHEMICAL GEOLOGY,2015,409(2015):1-11.
APA Zeng, Zhigang,Niedermann, Samuel,Chen, Shuai,Wang, Xiaoyuan,&Li, Zhaoxue.(2015).Noble gases in sulfide deposits of modern deep-sea hydrothermal systems: Implications for heat fluxes and hydrothermal fluid processes.CHEMICAL GEOLOGY,409(2015),1-11.
MLA Zeng, Zhigang,et al."Noble gases in sulfide deposits of modern deep-sea hydrothermal systems: Implications for heat fluxes and hydrothermal fluid processes".CHEMICAL GEOLOGY 409.2015(2015):1-11.
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