岩浆作用对海底热液系统物质的贡献

系统地总结分析了国内外关于岩浆作用对热液系统物质贡献的证据和研究成果。在此基础上,进一步分析了岩浆作用对热液系统物质贡献的主要形式,并对近期研究工作的主要方向进行了探索性分析。提出岩浆作用对热液系统物质贡献的形式除了传统的岩-水反应外,还有岩浆后期热液及挥发性组分直接进入的途径(形式);对海底热液活动系统的研究工作近期应主要集中在3个方面:(1)利用新近发展的高新技术,强化矿物及包裹体的原位微区分析,获取更加精细的矿物形成过程中的原始信息。(2)非传统稳定同位素的开发应用,为解决悬而未决的科学问题发展新的技术手段。(3)进一步发展完善岩浆作用对热液系统物质贡献的理论模型,更加贴近实际地定量评价岩浆作用对热液系统的物质贡献。上述工作,无疑对推进海底热液活动研究的进一步深化具有重要意义。

Review on magmatic contribution to seafloor hydrothermal systems

Seafloor hydrothermal activities and sulfides have been researched sufficiently in the past few decades, and important results have been obtained. However, there remain much arguments about the ore-forming material source of hydrothermal deposits. Earlier studies show that water-rock reaction provides most of the ore-forming materials to hydrothermal deposits, while with the progress in research, more evidences suggest that magmatism considerably contributes to hydrothermal systems. In this paper, evidences and research results concerning magmatic contributions to hydrothermal systems are systematically summarized. On this basis, we analyze the main forms of magmatic contribution and present the directions of further research. In addition to water-rock reaction, magmatic fluids and volatiles also contribute a large amount of ore-forming materials to hydrothermal systems. Further research should focus on the following: (1) Use recently developed analysis methods and microanalysis techniques to obtain more detailed information about mineral-forming processes; (2) Develop and apply non-traditional stable isotopes analysis techniques to solve the existing controversial scientific issues; (3) Perfect the theoretical mode of hydrothermal mineralization and evaluate the magmatic contributions to hydrothermal system more precisely.