NDLI: He, Ne and Ar isotope compositions of fluid inclusions in hydrothermal sulfides from the TAG hydrothermal field Mid-Atlantic Ridge

Content Provider	Springer Nature Link
Author	Zeng, Zhigang Qin, Yunshan Zhai, Shikui
Copyright Year	2001
Abstract	Helium, neon and argon isotope compositions of fluid inclusions have been measured in hydrothermal sulfide samples from the TAG hydrothermal field at the Mid-Atlantic Ridge. Fluid-inclusion$^{3}$He/$^{4}$He ratios are 2.2—13.3 times the air value (Ra), and with a mean of 7.2 Ra. Comparison with the local vent fluids ($^{3}$He/$^{4}$He=7.5—8.2 Ra) and mid-ocean ridge basalt values ($^{3}$He/$^{4}$He=6—11 Ra) shows that the variation range of$^{3}$He/$^{4}$He ratios from sulfide-hosted fluid inclusions is significantly large. Values for$^{20}$Ne/$^{22}$Ne are from 10.2 to 11.4, which are significantly higher than the atmospheric ratio (9.8). And fluid-inclusion$^{40}$Ar/$^{36}$Ar ratios range from 287 to 359, which are close to the atmospheric values (295.5). These results indicate that the noble gases of fluid inclusions in hydrothermal sulfides are a mixture of mantle- and seawater-derived noble gases; the partial mantle-derived components of trapped hydrothermal fluids may be from the lower mantle; the helium of fluid inclusions is mainly from upper mantle; and the Ne and Ar components are mainly from seawater.
Starting Page	221
Ending Page	228
Page Count	8
File Format	PDF
ISSN	10069313
Journal	Science in China Series D: Earth Sciences
Volume Number	44
Issue Number	3
e-ISSN	18622801
Language	English
Publisher	Science in China Press
Publisher Date	2001-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	He-Ne-Ar isotopes seafloor hydrothermal sulfides TAG hydrothermal field Geosciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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