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ZENG Zhigang,QIN Yunshan,ZHAI Shikui. 2004. Helium, neon and argon isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, the Okinawa Trough. Acta Oceanologica Sinica, (4):655－661
Helium, neon and argon isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, the Okinawa Trough
Helium, neon and argon isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, the Okinawa Trough
Received:October 11, 2003  Revised:January 20, 2004
DOI：
Key words:helium-neon-argon isotopes  seafloor massive sulfides  Jade hydrothermal field
中文关键词:  helium-neon-argon isotopes  seafloor massive sulfides  Jade hydrothermal field
基金项目:
Author NameAffiliationE-mail
ZENG Zhigang Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China zgzeng@ms.qdio.ac.cn 
QIN Yunshan Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China  
ZHAI Shikui College of Marine Geosciences, Ocean University of China, Qingdao 266003, China  
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Abstract:
      Helium,neon and argon isotope compositions of fluid inclusions have been measured in massive sulfide samples from the Jade hydrothermal field in the central Okinawa Trough.Huid-inclusion 3He/4He ratios are between 6.2 and 10.1 times the air value (Ra),and with a mean of 7.8Ra,which are consistent with the mid-ocean ridge basalt values[3He/4He≈(6Ra~11Ra)].Values for 20Ne/22Ne are from 10.7 to 11.3,which are significantly higher than the atmospheric ratio (9.8).And the fluid-inclusion 40Ar/36Ar ratios range from 287 to 334,which are close to the atmosperic values (295.5).These results indicate that the noble gases of trapped hydrothermal fluids in massive sulfides are a mixture of mantle-and seawater-derived components,and the helium of fluid inclusions is mainly from mantle,the nelium and argon isotope compositions are mainly from seawater.
中文摘要:
      Helium,neon and argon isotope compositions of fluid inclusions have been measured in massive sulfide samples from the Jade hydrothermal field in the central Okinawa Trough.Huid-inclusion 3He/4He ratios are between 6.2 and 10.1 times the air value (Ra),and with a mean of 7.8Ra,which are consistent with the mid-ocean ridge basalt values[3He/4He≈(6Ra~11Ra)].Values for 20Ne/22Ne are from 10.7 to 11.3,which are significantly higher than the atmospheric ratio (9.8).And the fluid-inclusion 40Ar/36Ar ratios range from 287 to 334,which are close to the atmosperic values (295.5).These results indicate that the noble gases of trapped hydrothermal fluids in massive sulfides are a mixture of mantle-and seawater-derived components,and the helium of fluid inclusions is mainly from mantle,the nelium and argon isotope compositions are mainly from seawater.
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