大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究

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大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究

曾志刚, 翟世奎, 杜安道

文章导航 > 沉积学报 > 2002 > 20(3): 394-398

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

引用本文:

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

Citation:

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

引用本文:

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

Citation:

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究

1 中国科学院海洋研究所,山东青岛,266071;
2 青岛海洋大学,山东青岛,266003;
3 中国地质科学院,北京,100037

基金项目: 国家大洋重大专项课题(批准号:DY105-01-03-1)和国家自然科学基金项目(批准号:40176020)资助

作者简介:
曾志刚,男,1968年出生,研究员,博士,海洋地球化学

中图分类号: P736.4;P597

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文章访问数: 462
HTML全文浏览量: 21
PDF下载量: 620
被引次数: 0

Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge

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

摘要: 新测得TAG热液区中5件海底块状硫化物样品的锇含量及其同位素组成,187Os/186Os比值在2.305～7.879之间,均值为5.986,介于现代海水和上部洋壳岩石的锇同位素组成之间,表明该区海底块状硫化物中锇是海水和上部洋壳来源锇混合的产物.在海底热液循环过程中,海水的混入对该区热液流体的Os浓度及其同位素组成产生了明显的影响。
- Os同位素 /
- 海底块状硫化物 /
- TAG热液区
Abstract: New data on osmiumisotopic compositions of four seafloor massive sulfide samples from the TAG hydrothermal field has been got,the 187Os/186Os ratios of massive sulfide samples vary from2.305 to 7.879,with a mean of 5.986,these ratios are bet ween that of modern seawater and upper oceanic crust,and this range of Os isotopic compositions is likely the result of mixing of seawater with upper oceanic crust,maybe about 56 % of osmium in the massive sulfides is from the seawater,and 44 % is fromt he upper oceanic crust. The mixing of seawater with hydrothermal fluid have an obvious effect on the Os concentration and isotope composition of massive sulfi de during the seafloor hydrothermal activity.
- Os isotope /
- seafloor massive sulfide /
- TAG hydrothermal field

参考文献(21)

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[3]	Ravizza G, Turekian K K, Hay B J. The geochemistry of rhenium and osmium in recent sediments from the Black Sea[J]. Geochim. Cosmochim. Acta, 1991, 55: 3 741～3 752
[4]	Ravizza G, Turekian K K. The osmium isotopic composition of organic-rich marine sediments [J]. Earth Planet. Sci. Lett, 1992, 110: 1～6
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[6]	Reusch D N, Ravizza G, Maasch K A, et al. Miocean seawater 187 Os/188Os ratios inferred from metalliferous carbonates[J]. Earth Planet. Sci. Lett., 1998, 160: 163～178
[7]	Roy-Barman M, Allegre C J. 187 Os/186Os of mid-ocean ridge basalts and abyssal peridotites[J]. Geochim. Cosmochim. Acta, 1994, 58: 5 043～5 054
[8]	Martin C E. Osmium isotopic characteristics of mantle-derived rocks[J]. Geochim. Cosmochim. Acta, 1991, 55: 1 421～1 434
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[11]	曾志刚,翟世奎,赵一阳等.大西洋中脊TAG热液活动区中热液沉积物的稀土元素地球化学特征[J].海洋地质与第四纪地质,1999,19:59～66[Zeng Z G, Zhai S K, Zhao Y Y, et al.Rare earth element geochemistry of hydrothermal sediment from the TAG hydrothermal field,Mid-Atlantic Ridge[J]. Marine Geology & Quaternary Geology, 1999,19(3):59～66(in Chinese with English abstract)]
[12]	曾志刚,秦蕴珊,赵一阳等.大西洋中脊TAG热液活动区海底热液沉积物的硫同位素组成及其地质意义[J].海洋与湖沼,2000,31:518～529[Zeng Z G, Qin Y S, Zhao Y Y, et al. Sulfur isotopic composition of seafloor surface hydrothermal sediments in the TAG hydrothermal field of Mid-Atlantic Ridge and its geological implications[J]. Oceanologia et Limnologia Sinica, 2000, 31(5): 518～529(in Chinese with English abstract)]
[13]	曾志刚,秦蕴珊,翟世奎.大西洋洋中脊海底表层热液沉积物的铅同位素组成及其地质意义[J].青岛海洋大学学报,2001,31:103～109[Zeng Z G, Zhai S K, Qin Y S.Lead isotope compositions of seafloor surface hydrothermal sediments in the TAG hydrothermal field of Mid-Atlantic Ridge and its geological implications[J]. Journal of Ocean University of Qingdao, 2001, 31(1):103～109(in Chinese with English abstract).
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文章访问数: 462
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大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究

1 中国科学院海洋研究所,山东青岛,266071;

2 青岛海洋大学,山东青岛,266003;

3 中国地质科学院,北京,100037

基金项目: 国家大洋重大专项课题(批准号:DY105-01-03-1)和国家自然科学基金项目(批准号:40176020)资助

作者简介:
曾志刚,男,1968年出生,研究员,博士,海洋地球化学

收稿日期: 2002-01-19

中图分类号: P736.4;P597

关键词:

海底块状硫化物 /

摘要: 新测得TAG热液区中5件海底块状硫化物样品的锇含量及其同位素组成,187Os/186Os比值在2.305～7.879之间,均值为5.986,介于现代海水和上部洋壳岩石的锇同位素组成之间,表明该区海底块状硫化物中锇是海水和上部洋壳来源锇混合的产物.在海底热液循环过程中,海水的混入对该区热液流体的Os浓度及其同位素组成产生了明显的影响。

English Abstract

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

引用本文:

曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究[J]. 沉积学报, 2002, 20(3): 394-398.

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

Citation:

ZENG Zhi-gang, ZHAI Shi-kui, DU An-dao. Os Isotopic Compositions of Seafloor Massive Sulfide from the TAG Hydrothermal Field in the Mid-Atlantic Ridge[J]. Acta Sedimentologica Sinica, 2002, 20(3): 394-398.

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参考文献 (21)

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