摘要
海底多金属硫化物矿床是热液活动的产物 ,主要分布在东太平洋海隆、西太平洋构造活动带、西南太平洋以及大西洋中脊 ,其产出构造背景为洋中脊、弧后扩张中心及地幔热点处。该文系统地总结了现代海底多金属硫化物矿床产出的地质背景特点 ,对各地质环境中矿化的规律进行了对比 ,并对其形成机制等热点问题作了概述 ,详细介绍了矿床成因方面的新进展 ,着重阐述了海底多金属矿床的双扩散对流模式。
Polymetallic sulfide deposits at seafloor are members of a series of mineral deposits formed by hydrothermal fluid at seafloor active hydrothemal field. Approximately 139 sites of hydrothermal polymetallic sulfide deposits are located in such environments as mid oceanic ridge, back arc spreading center or rift zone. The formation of the deposits is closely related to their geologic setting. A variety of geneses of modern polymetallic sulfide deposits at seafloor are summarised, and the authors put stress on the double diffusive convection model and take it as a new progress.
出处
《成都理工学院学报》
CSCD
2000年第4期335-342,共8页
Journal of Chengdu University of Technology
基金
国家攀登预选项目! (95预 39)
国家自然科学基金资助项目! (498730 1 3)
关键词
海底多金属硫化物矿床
海底热液活动
大洋中脊
polymetallic sulfide deposits at seafloor
active hydrothermal field, mid oceanic ridge
back arc spreading center
double diffusive convection
