DISTRIBUTION PATTERN OF SUBMARINE HYDROTHERMAL SULFIDE DEPOSITS AND CONTROLLING FACTORS
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摘要: 基于最新公布的全球热液矿点数据讨论了海底热液多金属硫化物矿体形成的构造环境,探讨了深部岩浆活动、断裂构造以及沉积物盖层等控矿因素对洋中脊多金属硫化物矿体成矿的影响。研究结果表明:海底热液多金属硫化物矿点主要分布于离散型板块边界和汇聚型板块边界;深部岩浆活动和断裂构造是洋中脊热液多金属硫化物成矿最主要的控矿因素;快、慢扩张洋中脊环境深部岩浆活动和断裂构造的差异导致在海底形成了不同规模的多金属硫化物矿体。对认识海底热液多金属硫化物矿床分布与成矿规律、以及开展海底多金属硫化物资源勘查具有一定的指导意义。
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关键词:
- 海底热液多金属硫化物 /
- 控矿因素 /
- 断裂构造 /
- 深部岩浆活动
Abstract: The latest data on global hydrothermal vent sites are used in this paper to discuss the tectonic settings of submarine polymetallic sulfide deposits and other ore-controlling factors, such as the deep magmatic activity, fault structure and sediment cap. Results show that the submarine hydrothermal polymetallic sulfide vent sites are mainly located at the divergent and convergent plate boundaries; the deep magmatic activity and the fault structures are the most important factors controlling the distribution of the hydrothermal polymetallic sulfide on mid-ocean ridges; and the speed of sea floor spreading contributes to the size of polymetallic sulfide deposits. Conclusions of this study could be used as the reference in the exploration of submarine hydrothermal polymetallic resources. -
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