摘要
热液对流系统中的酸-碱反应和氧化-还原反应往往共轭出现,与流体物理化学条件的交替转化有关,并控制了矿质活化-迁移-堆积过程。物理化学条件的交替变化还导致了成矿物质迁移方式和迁移能力的变化。SO2-4向4在热液对流体系中是搬运许多金属元素的重要配位剂,SO2-S2-的临界转化是导致矿质堆积的因素之一。热液对流成矿过程还是导致成矿物质的多来源性及不同来源物质混合的重要原因,并决定了硫、氧、碳、铅等稳定同位素演化路径和混合机制的复杂性。成矿/成烃耦合是成矿热液对流循环的一种现象,对流循环系统成油机制可能具有普遍的意义,是在海底热液活动区或热异常区寻找油气藏的依据。
The mineralization system related to hydrothermal convection occurring in the epeiric region of the crust is dynamic and open. It often has an effect on geological interface and physicochemical changing-zone. Acid-alkali reaction and oxidation-reducing reaction conjugately happen in hydrothermal convection system,which is related to alternate change of physicochemical condition of fluid and control activation moving-accumulating of ore-forming substana. Alternate change of physicochemical condition also leads to changing of ore-forming matter's moving manner and capacity. SO^(2-)_4 is an important complexant on carrying some metal elements. Critical transformation from SO^(2-)_4 to S^(2-) is one reason of ore-forming substance's precipitating. Ore-forming substance often is of many different sources in hydrothermal convection mineralization, which determine the complicated evolution route and mingling mechanism of S, O, C and Pb isotopes. The coupling of ore-formation/ hydrocarbon-formation is a phenomenon of convection-circulation of in the hydrothermal system. Oil accumulation in the hydrothermal convection system has universal significance, which is the basis for oil prospecting in the submarine area of hotwater activity or hotuabnomality.
出处
《矿产与地质》
2004年第2期95-99,共5页
Mineral Resources and Geology
基金
高等学校博士学科点专项科研基金项目"热液对流成矿体系动态演化模型与隐伏矿体预测研究"(编号20030533012)资助.
关键词
元素地球化学
热液对流
物理化学演化
矿质迁移形式
稳定同位素
成矿/成烃耦合
elements
geochemistry
hydrothermal convection
physicochemical evolution
transfer way of ore-forming substance
stable isotope
coupling of mineralization and hydrocarbon formation.
