湖南芙蓉锡矿田流体包裹体的He同位素组成及成矿流体来源示踪
Helium Isotope Composition of Fluid Inclusions and the Origin of Ore-Forming Fluids of Furong Tin Orefield in Hunan Province, China
查看参考文献35篇
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文摘
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芙蓉锡矿田位于湖南省骑田岭花岗岩体的南部，是一个新近发现的超大型锡矿田．与以往所研究的与S型花岗岩有关的锡矿床明显不同，这个矿田在时空上都与骑田岭A型花岗岩密切相关．该矿田矿石硫化物流体包裹体的^3He／^4He测定值为0．14～2．95Ra，低于地幔的^3He／^4He值（6～7Ra），且高于地壳的^3He／^4He值（0．01～0．05Ra）．这表明芙蓉锡矿田成矿流体中的He具壳幔两端元混合的特点．该区一致的硫、锶及其他证据也都表明，深部地幔物质确实参与了该区锡的成矿．骑田岭岩体属造山期后张性环境下形成的A型花岗岩类．芙蓉锡矿田就产在骑田岭岩体的内外接触带或岩体中，其主成矿期与骑田岭岩体的形成时间相当吻合，且两者均具壳幔两端元混合成因的特征，所以其形成地球动力学背景可能均与中生代华南岩石圈的拉张、伸展作用密切相关． |
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其他语种文摘
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The Furong tin orefield, located in southern Hunan, China, is a newly-discovered super-large tm orefield, in contrast to most other tin deposits associated with S-type granites, the Furong tin deposit is spatially and temporally associated with the Qitianling A-type granite. The ^3He/^4 He ratios of fluid inclusions in sulfides from this orefield range from 0. 14 to 2.95 Ra, which are lower than that of the mantle, and higher than that of the crust, indicating that the helium in ore forming fluids from this orefield is a mixture of two end-member components, mantle-source He and crust-source He. This conclusion is in accordance with the S isotope, Sr isotope and other results, suggesting that there must be some mantle source substance in mineralization of this orefield. The Qitianling granite belongs to A-type granite which formed in a postorogenic extensional settings. The Furong tin orefield is located at the contact zone （outer or inner） or within of Qitianling granite, and its main tin-mineralization time is consistent with the intrusion time of Qitianling granite. The relationship reflects that their forming settings of geodynamics might both be related to the Mesozoic lithospheric extension in South China. |
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来源
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地球科学
,2006,31(1):129-135 【核心库】
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关键词
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芙蓉锡矿田
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成矿流体
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He同位素
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地址
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中国科学院地球化学研究所, 中国科学院矿床地球化学重点实验室, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-2383 |
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学科
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地质学 |
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基金
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中国科学院知识创新工程重要方向项目
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中国科学院西部之光人才培养计划
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文献收藏号
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CSCD:2329122
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参考文献 共
35
共2页
|
|
1.
Baptiste P J. Abundance and isotopic composition of helium in hydrothermal sulfides from the East Pacific Rise at 13°N.
Geochimica et Cosmochimica Acta,1996,60:87-93
|
被引
55
次
|
|
|
|
|
2.
Burnard P G. He and Ar isotopes of ore minerals from Panasqueira.
Geochimica et Cosmochimica Acta,2004,68(7):1607-1615
|
被引
31
次
|
|
|
|
|
3.
Craig H. Primordial neon.
Earth Planet.Sci.Lett,1996,31:369-385
|
被引
3
次
|
|
|
|
|
4.
Dunai T. Helium.
Geochimica et Cosmochimica Acta,1995,59:2767-2783
|
被引
46
次
|
|
|
|
|
5.
Hu R Z. et al.
Chemical Geology,1998,146:55-63
|
被引
55
次
|
|
|
|
|
6.
Hu R Z. et al.
Chemical Geology,2004,203:305-317
|
被引
74
次
|
|
|
|
|
7.
Hu R Z. et al.
Chinese Science Bulletin,1998,43:69-72
|
被引
3
次
|
|
|
|
|
8.
Inguaggiato S. A new technique based on gaswater re-equilibration and its application to Stromboli volcanic system.
Applied Geochemistry,2004,19:665-673
|
被引
3
次
|
|
|
|
|
9.
Kurz M D. In situ production of cosmogenic helium and some applications to geochronology.
Geochimica et Cosmochimica Acta,1986,50:2855-2862
|
被引
10
次
|
|
|
|
|
10.
Li Y H. et al.
Science in China. Series D, Earth Sciences (in English),2002,45:174-183
|
被引
8
次
|
|
|
|
|
11.
Marty B. Helium isotopes and CO2 in volcanic gases of Japan.
Chemical Geology,1989,76:25-40
|
被引
31
次
|
|
|
|
|
12.
Mamyrin B A. Helium isotopes in nature.
Developments in geochemistry,1984:273
|
被引
4
次
|
|
|
|
|
13.
Park J. Dar Al Gani 476/489.
Proceeding of Lunar and Planetary Science Conference XXXIV,2003:1213
|
被引
2
次
|
|
|
|
|
14.
Podosek F A. Absorption of xenon and krypton on shales.
Geochimica et Cosmochimica Acta,1980,45:2401-2415
|
被引
2
次
|
|
|
|
|
15.
Simmons S F. Mantle-derived helium in two Peruvian hydrothermal ore deposits.
Nature,1987,329:429-432
|
被引
72
次
|
|
|
|
|
16.
Stuart F M. He-Ar isotopes in fluid inclusions from DaeHwa W-Mo mineralisation.
Geochimica et Cosmochimica Acta,1995,59:4663-4673
|
被引
146
次
|
|
|
|
|
17.
Stuart F M. et al.
Geology,1994,22:823-826
|
被引
49
次
|
|
|
|
|
18.
Torgersen T. Iceland.
Geochimica et Cosmochimica Acta,1982,46:739-748
|
被引
9
次
|
|
|
|
|
19.
Turner G. Helium/heat rations and deposition temperatures of sulfides from the ocean floor.
Nature,1992,375:581-583
|
被引
47
次
|
|
|
|
|
20.
Trull T W. Implications for surface exposure dating.
Earth and Planetary Science Letters,1991,103:241-251
|
被引
35
次
|
|
|
|
|
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