WANG Yejian, HAN Xiqiu, QIU Zhongyan. Source and nature of ore-forming fluids of the Edmond hydro-thermal field, Central Indian Ridge: evidence from He-Ar isotope composition and fluid inclusion study[J]. Acta Oceanologica Sinica, 2017, 36(1): 101-108. doi: 10.1007/s13131-016-0963-1
Citation: WANG Yejian, HAN Xiqiu, QIU Zhongyan. Source and nature of ore-forming fluids of the Edmond hydro-thermal field, Central Indian Ridge: evidence from He-Ar isotope composition and fluid inclusion study[J]. Acta Oceanologica Sinica, 2017, 36(1): 101-108. doi: 10.1007/s13131-016-0963-1

Source and nature of ore-forming fluids of the Edmond hydro-thermal field, Central Indian Ridge: evidence from He-Ar isotope composition and fluid inclusion study

doi: 10.1007/s13131-016-0963-1
  • Received Date: 2016-03-25
  • Rev Recd Date: 2016-06-14
  • To understand the source and nature of the ore-forming fluids of the Edmond hydrothermal field on the Central Indian Ridge, we studied the He-Ar isotope composition and fluid inclusions of the hydrothermal precipitates. Our results show that the sulfide samples contain noble gases He, Ne, Kr, and Xe with their abundances in between those of air-saturated water (ASW) and mid-ocean ridge basalt (MORB). The 3He/4He ratio varies from 1.3 to 8.7 Ra(n=10, average:5.1 Ra), whereas the 40Ar/36Ar ratio is from 285.3 to 314.7 (n=10, average:294.8). These aa results suggest that the He was derived from a mixture of MORB with variable amounts of seawater, but the Ar in the ore-forming fluids trapped in the sulfides is predominantly derived from seawater. The fluid inclusions of barite have a wide range of homogenization temperatures and salinities varying from 163℃ to 260℃ and 2.6 wt% to 8.5 wt% NaCl equiv., respectively. It is suggested that the ore-forming fluids were produced by phase separation, which agreed with the present-day vent fluid study.
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  • Bischoff J L, Pitzer K S. 1989. Liquid-vapor relations for the system NaCl-H2O; Summary of the P-T-x surface from 300℃ to 500℃. American Journal of Science, 289(3):217-248
    Bischoff J L, Rosenbauer R J. 1984. The critical point and two-phase boundary of seawater, 200-500℃. Earth and Planetary Science Letters, 68(1):172-180
    Bodnar R J. 1993. Revised equation and table for determining the freezing point depression of H2O-NaCl solutions. Geochimica et Cosmochimica Acta, 57(3):683-684
    Butterfield D A, Fouquet Y, Halbach M, et al. 2003. Group Report:how can we describe fluid-mineral processes and the related energy and material fluxes?. In:Halbach P, Tunnicliffe V, Hein J R, eds. Energy and Mass Transfer in Marine Hydrothermal Sys-tems. Berlin, Germany:Dahlem University Press, 183-209
    DeMets C, Gordon R G, Argus D F, et al. 1990. Current plate motions. Geophysical Journal International, 101(2):425-478
    Farley K A, Neroda E. 1998. Noble gases in the earth's mantle. Annu-al Review of Earth and Planetary Sciences, 26(1):189-218
    Füri E, Hilton D R, Murton B J, et al. 2011. Helium isotope variations between Réunion Island and the Central Indian Ridge (17°-21°S):new evidence for ridge-hot spot interaction. Journal of Geophysical Research, 116(B2):B2207
    Gallant R M, Von Damm K L. 2006. Geochemical controls on hydro-thermal fluids from the Kairei and Edmond Vent Fields, 23°-25°S, Central Indian Ridge. Geochemistry, Geophysics, Geosys-tems, 7(6):Q6018
    Gamo T, Chiba H, Yamanaka T, et al. 2001. Chemical characteristics of newly discovered black smoker fluids and associated hydro-thermal plumes at the Rodriguez Triple Junction, Central Indi-an Ridge. Earth and Planetary Science Letters, 193(3-4):371-379
    Graham D W. 2002. Noble gas isotope geochemistry of Mid-Ocean Ridge and Ocean Island Basalts:characterization of mantle source reservoirs. Reviews in Mineralogy and Geochemistry, 47(1):247-317
    Halbach P, Blum N, Münch U, et al. 1998. Formation and decay of a modern massive sulfide deposit in the Indian Ocean. Minerali-um Deposita, 33(3):302-309
    Hannington M. 2014. Volcanogenic massive sulfide deposits. In:Hol-land H D, Turekian K K, eds. Treatise on Geochemistry. 2nd ed. Oxford:Elsevier, 463-488
    Hashimoto J, Ohta S, Gamo T, et al. 2001. First hydrothermal vent communities from the Indian Ocean discovered. Zoological Science, 18(5):717-721
    Hilton D R, Grönvold K, Macpherson C G, et al. 1999. Extreme 3He/4He ratios in northwest Iceland:constraining the common component in mantle plumes. Earth and Planetary Science Let-ters, 173(1-2):53-60
    Hou Zengqian, Zaw K, Li Yanhe, et al. 2005. Contribution of magmatic fluid to the active hydrothermal system in the JADE Field, Okinawa Trough:evidence from fluid inclusions, oxygen and helium isotopes. International Geology Review, 47(4):420-437
    Jean-Baptiste P, Fouquet Y. 1996. Abundance and isotopic composition of helium in hydrothermal sulfides from the East Pacific Rise at 13°N. Geochimica et Cosmochimica Acta, 60(1):87-93
    Kumagai H, Nakamura K, Toki T, et al. 2008. Geological background of the Kairei and Edmond hydrothermal fields along the Cent-ral Indian Ridge:Implications of their vent fluids' distinct chemistry. Geofluids, 8(4):239-251
    Li Zhaoli, Hu Ruizhong, Peng Jiantang, et al. 2005. Advances in tra-cing the ore-forming fluids using rare gas isotopes. Advances in Earth Science (in Chinese), 20(1):57-63
    Lüders V, Niedermann S. 2010. Helium isotope composition of fluid inclusions hosted in massive sulfides from modern submarine hydrothermal systems. Economic Geology, 105(2):443-449
    Nakamura K, Watanabe H, Miyazaki J, et al. 2012. Discovery of new hydrothermal activity and chemosynthetic fauna on the Cent-ral Indian Ridge at 18°-20°S. PLoS One, 7(3):e32965
    Ni Pei, Ding Junying, Rao Bing. 2006. In situ cryogenic Raman spec-troscopic studies on the synthetic fluid inclusions in the sys-tems H2O and NaCl-H2O. Chinese Science Bulletin, 51(1):108-114
    O'Nions R K, Oxburgh E R. 1988. Helium, volatile fluxes and the de-velopment of continental crust. Earth and Planetary Science Letters, 90(3):331-347
    Ozima M, Alexander Jr E C. 1976. Rare gas fractionation patterns in terrestrial samples and the Earth-atmosphere evolution model. Reviews of Geophysics, 14(3):385-390
    Ozima M, Podosek F A. 2002. Noble Gas Geochemistry. 2nd ed. Cam-bridge, UK:Cambridge University Press, 1-286
    Petersen S, Herzig P M, Schwarz-Schampera U, et al. 2004. Hydro-thermal precipitates associated with bimodal volcanism in the Central Bransfield Strait, Antarctica. Mineralium Deposita, 39(3):358-379
    Porcelli D, Ballentine C J. 2002. Models for distribution of terrestrial noble gases and evolution of the atmosphere. Reviews in Min-eralogy and Geochemistry, 47(1):411-480
    Son J, Pak S J, Kim J, et al. 2014. Tectonic and magmatic control of hy-drothermal activity along the slow-spreading Central Indian Ridge, 8°S-17°S. Geochemistry, Geophysics, Geosystems, 15(5):2011-2020
    Staudacher T, Sarda P, Allègre C J. 1990. Noble gas systematics of Réunion Island, Indian Ocean. Chemical Geology, 89(1-2):1-17
    Stuart F M, Harrop P J, Knott R, et al. 1995. Noble gas isotopes in 25 000 years of hydrothermal fluids from 13°N on the East Pa-cific Rise. Geological Society, London, Special Publications, 87(1):133-143
    Stuart F M, Turner G, Duckworth R C, et al. 1994. Helium isotopes as tracers of trapped hydrothermal fluids in ocean-floor sulfides. Geology, 22(9):823-826
    Trieloff M, Kunz J. 2005. Isotope systematics of noble gases in the Earth's mantle:possible sources of primordial isotopes and im-plications for mantle structure. Physics of the Earth and Planet-ary Interiors, 148(1):13-38
    Trieloff M, Kunz J, Allègre C J. 2002. Noble gas systematics of the Réunion mantle plume source and the origin of primordial noble gases in Earth's mantle. Earth and Planetary Science Let-ters, 200(3-4):297-313
    Van Dover C L, Humphris S E, Fornari D, et al. 2001. Biogeography and ecological setting of Indian Ocean hydrothermal vents. Sci-ence, 294(5543):818-823
    Wang Yejian, Han Xiqiu, Jin Xianglong, et al. 2011. Typomorphic characteristics of pyrite and its metallogenic environment of Edmond hydrothermal field, Central Indian Ridge. Acta Miner-alogica Sinica (in Chinese), 31(2):173-179
    Wang Yejian, Han Xiqiu, Yang Haili, et al. 2013. Elemental composition and age of the hydrothermal sulfide from the Edmond hy-drothermal field, Central Indian Ridge. Acta Mineralogica Sinica (in Chinese), 33(S2):668-669
    Webber A P, Roberts S, Burgess R, et al. 2011. Fluid mixing and thermal regimes beneath the PACMANUS hydrothermal field, Papua New Guinea:helium and oxygen isotope data. Earth and Planetary Science Letters, 304(1-2):93-102
    Wu Zhongwei, Sun Xiaoming, Dai Yingzhi, et al. 2011. The discovery of native gold in massive sulfides from the Edmond hydro-thermal field, Central Indian Ridge and its significance. Acta Petrologica Sinica (in Chinese), 27(12):3749-3762
    Ye Xianren, Fang Nianqiao, Ding Lin, et al. 2008. The noble gas con-tents and helium and argon isotopic compositions in the co-balt-rich crusts from the Magellan Seamounts. Acta Petrolo-gica Sinica (in Chinese), 24(1):185-192
    Ye Xianren, Tao Mingxin, Yu Chuanao, et al. 2007. Helium and neon isotopic compositions in the ophiolites from the Yarlung Zangbo River, Southwestern China:the information from deep mantle. Science China Series D:Earth Sciences, 50(6):801-812
    Ye Xianren, Wu Maobing, Sun Mingliang. 2001. Determination of the noble gas isotopic composition in rocks and minerals by mass spectrometry. Rock and Mineral Analysis (in Chinese), 20(3):174-178
    Zeng Zhigang, Niedermann S, Chen Shuai, et al. 2015. Noble gases in sulfide deposits of modern deep-sea hydrothermal systems:implications for heat fluxes and hydrothermal fluid processes. Chemical Geology, 409:1-11
    Zeng Zhigang, Qin Yunshan, Zhai Shikui. 2001. He, Ne and Ar iso-tope compositions of fluid inclusions in hydrothermal sulfides from the TAG hydrothermal field, Mid-Atlantic Ridge. Science China Series D:Earth Sciences, 44(3):221-228
    Zeng Zhigang, Qin Yunshan, Zhai Shikui. 2003. He, Ne and Ar iso-tope compositions of fluid inclusions in massive sulfides from the Jade hydrothermal field, Okinawa Trough. Haiyang Xuebao (in Chinese), 25(4):36-42
    Zhang Yigang, Frantz J D. 1987. Determination of the homogenization temperatures and densities of supercritical fluids in the system NaCl-KCl-CaCl2-H2O using synthetic fluid inclusions. Chemical Geology, 64(3-4):335-350
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