He, Ne and Ar isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, Okinawa Trough

ZENG Zhi-gang; QIN Yun-shan; ZHAI Shi-kui

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ZENG Zhi-gang, QIN Yun-shan, ZHAI Shi-kui. He, Ne and Ar isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, Okinawa Trough[J]. Haiyang Xuebao, 2003, 25(4): 36-42.

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ZENG Zhi-gang, QIN Yun-shan, ZHAI Shi-kui. He, Ne and Ar isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, Okinawa Trough[J]. Haiyang Xuebao, 2003, 25(4): 36-42.

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He, Ne and Ar isotope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, Okinawa Trough

1.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.
College of Marine Geosciences, Ocean University of China, Qingdao 266003, China

Received Date: 2001-11-26
Rev Recd Date: 2002-06-28

Abstract

Abstract

Helium,neon and argon isotope compositions of fluid inclusions have been measured in massive sulfide samples from the Jade hydrothermal field at the central Okinawa Trough.Fluid-inclusion ³He/⁴He ratios are between 6.2 and 10.1 times the air value (Ra),and with a mean of 7.8 Ra,which are consistent with the midocean ridge basalt values[³He/⁴He≈(6-11) Ra].Values for ²⁰Ne/²²Ne are from 10.7 to 11.3,which are significantly higher than the atmospheric ratio (9.8).And 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 major from mantle,the Ne and Ar isotope compositions are major from seawater.
- He-Ne-Ar isotopes,
- seafloor massive sulfides,
- Jade hydrothermal field

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References(28)

References

CLARKE W P,BEG M A,CRAIG H.Excess ³He in the sea:evidence for terrestrial primordial helium[J].Earth and Planetary Science Letters,1969,6:213-220.

JENKINS W J,EDMOND J M,CORLISS J B.Excess ³He and ⁴He in the Galapagos submarine hydrothermal waters[J].Nature,1978,272:156-158.

LUPTON J E,KLINKHAMMER G P,NORMARK W R,et al.Helium-3 and manganese at the 21°N East Pacific Rise hydrothermal site[J].Earth and Planetary Science Letters,1980,50:115-127.

CRAIG H,HORIBE Y,FARLEY K A,et al.Hydrothermal vents in the Mariana Trough:results of the first ALVIN dives[J].EOS,1987,68:1 531.

BUTTERFIELD D A,MASSOTH G J,MCDUFF R E,et al.Geochemistry of fluids from Axial Seamount hydrothermal emissions study vent field,Juan de Fuca Ridge:subseafloor boiling and subsequent fluid-rock interaction[J].Journal of Geophysical Research,1990,95:12 895-12 921.

BAKER E T,LUPTON J E.Changes in submarine hydrothermal ³He/heat ratios as an indicator of magmatic/tectonic activity[J].Nature,1990,346:556-558.

JEAN-BAPTISTE P,FOUQUET Y.Abundance and isotopic composition of helium in hydrothermal sulfides from the East Pacific Rise at 13°N[J].Geochimica et Cosmochimica Acta,1996,60:87-93.

STUART F M,TURNER G,DUCKWORTH R C,et al.Helium isotopes as tracers of trapped hydrothermal fluids in ocean-floor sulfides[J].Geology,1994,22:823-826.

STUART F M,DUCKWORTH R,TURNER G,et al.Helium and sulfur isotopes in sulfide minerals from Middle Valley,Northern Juan de Fuca Ridge[J].Proceedings of the Ocean Drilling Program(Scientific Results),1994,139:387-392.

TURNER G,STUART F.Helium/heat ratios and deposition temperatures of sulphides from the ocean floor[J].Nature,1992,357:581-583.

ELDERFIELD H,SCHULTZ A.Mid-ocean ridge hydrothermal fluxes and the chemical composition of the ocean[C].Annu Rev Earth Planet Sci,1996,24:191-224.

STUART F M,TURNER G.Mantle-derived ⁴⁰Ar in mid-ocean ridge hydrothermal fluids:implications for the source of volatiles and mantle degassing rates[J].Chemical Geology,1998,147:77-88.

侯增谦,李延河,艾永德,等.冲绳海槽活动热水成矿系统的氦同位素组成:幔源氦证据[J].中国科学(D辑),1999,29:155-166.

HALBACH P,PRACEJUS B,MARTEN A.Geology and mineralogy of massive sulfide ores from the central Okinawa Trough,Japan[J].Economic Geology,1993,88:2 210-2 225.

曾志刚,蒋富清,翟世奎,等.冲绳海槽中部Jade热液活动区中海底热液沉积物的硫同位素组成及其地质意义[J].海洋学报,2000,22:74-82.

曾志刚,蒋富清,翟世奎,等.冲绳海槽Jade热液活动区块状硫化物的铅同位素组成及其地质意义[J].地球化学,2000,29:239-245.

曾志刚,蒋富清,秦蕴珊,等.冲绳海槽中部Jade热液活动区中块状硫化物的稀土元素地球化学特征[J].地质学报,2001,75:244-249.

SAKAI H,GAMO T,KIM E-S,et al.Venting of carbon dioxide-rich fluid and hydrate formation in Mid-Okinawa Trough backarc basin[J].Science,1990,248:1 093-1 096.

SAKAI H,GAMO T,KIM E-S,et al.Unique chemistry of the hydrothermal solution in the Mid-Okinawa Trough backarc basin[J].Geophysical Research Letters,1990,17:2 133-2 136.

JEAN-BAPTISTE P,CHARLOU J L,STIEVENARD M,et al.Helium and methane measurements in hydrothermal fluids from the Mid-Atlantic Ridge:the Snake Pit site at 23°N[J].Earth and Planetary Science Letters,1991,106:17-28.

KURZ M D,JENKINS W J,SCHILLING J G,et al.Helium isotopic variations in the mantle beneath the central North Atlantic Ocean[J].Earth and Planetary Science Letters,1982,58:1-14.

O'NIONS R K,TOLSTIKHIN I N.Behaviour and residence times of lithophile and rare gas tracers in the upper mantle[J].Earth and Planetary Science Letters,1994,124:131-138.

HIYAGON H,OZIMA M,MARTY B,et al.Noble gases in submarine glasses from mid-oceanic ridges and Loihi seamount:constraints on the early history of the earth[J].Geochimica et Cosmochimica Acta,1992,56:1 301-1 316.

ALLEGRE C J,STAUDACHER T,SARDA P.Rare gas systematics:formation of the atmosphere,evolution and structure of the earth's mantle[J].Earth and Planetary Science Letters,1986/87,81:127-150.

SARDA P,STAUDACHER T,ALLEGRE C J.Neon isotopes in submarine basalts[J].Earth and Planetary Science Letters,1988,91:73-88.

LANGMUIR C H,VOCKE R D JR,HANSON G N,et al.A general mixing equation with applications to Icelandic basalts[J].Earth and Planetary Science Letters,1978,37:380-392.

TRIELOFF M,KUNZ J,CLAGUE D A,et al.The nature of pristine noble gases in mantle plumes[J].Science,2000,288:1 036-1 038.

STAUDACHER T H,SARDA P,RICHARDSON S H,et al.Noble gases in basalt glasses from a Mid-Atlantic Ridge topographic high at 14°N:geodynamic consequences[J].Earth and Planetary Science Letters,1989,96:119-133.

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