东太平洋海盆泛水岩系统物理化学场分布规律

Distribution of Physiochemical Field of Pan Water Rock System in Eastern Pacific Ocean Basin

分析了泛水岩系统物理化学场的基本特征及其空间分布规律 .结果表明 :在垂向上 ,在水—沉积物界面附近形成了氧化垒、碱性垒和化学组分浓度垒 ,其中以成矿金属垒的规模最大 ;在平面上 ,东区形成的成矿金属浓度垒的规模要比西区大 .泛水岩系统整体上呈低温、弱碱性强氧化环境 ,该系统中的成矿物质和成矿环境均有利于多金属结核的生长 。

Basic features and spatial distribution of physiochemical field of the pan water rock system were analyzed. The result shows that the oxidizing barrier, the alkaline barrier, and the concentration barrier of chemical components are formed in vertical direction near the interface between water and sediments, of which ore forming metal barriers are most remarkable. The scale of ore forming metal barriers in the east of the research area is larger horizontally than those in the western area. It is also believed that the environment of the pan water rock system is of low temperature, weak alkalinity and strong oxidation. It can be concluded that both the mineralizing substances and environment are favorable to poly metallic nodule mineralization, especially in the eastern area.