大型-超大型矿床成矿地球动力学背景  

Geodynamic background of metallogenesis of large-superlarge ore deposits

作　　者：莫宣学[1] MO Xuanxue(China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国地质大学(北京),北京100083

出　　处：《地学前缘》2020年第2期13-19,共7页Earth Science Frontiers

基　　金：中国地质调查局项目“大型超大型矿床成矿动力学背景、过程与定量勘查评价”。

摘　　要：大型-超大型矿床是地球成矿元素超常富集的产物,发现新的大型-超大型矿床是满足国家对矿产需求的关键。实践证明,将成矿地球动力学背景和成矿过程研究与定量勘查评价"三位一体"有机结合,是卓有成效的。大型-超大型矿床的成矿地球动力学条件从宏观层次影响和控制着成矿,主要包括大地构造环境、壳幔结构与深部过程、成矿的岩石系统、区域热-流体条件等4个基本方面。要从根本上探明我国矿产的分布格局与资源潜力,从深层次上揭示区域成矿规律和金属巨量堆积过程,开辟新的找矿空间和深度,预测找矿战略新区,尤其要深入揭示地球深部物质、结构和各圈层间物质-能量交换的地球动力学过程。Large and superlarge ore deposits are the results of supernormal accumulation of ore forming elements and their exploration is key for meeting the demands of mineral resources for national economy and society development.A combination of geodynamic background and metallogenic process studies with quantitative exploration and evaluation is an efficient approach.The geodynamic background study includes the following aspects:tectonic settings,crust-mantle structure and deep process,metallogenic petrological systems and regional thermo-fluid condition.For evaluating the preferential distribution and potential of mineral resources and predicting promising prospecting areas,it is specially important to reveal the deep Earth’s material and structure and geodynamic process of mass-energy transportation.

关 键 词：大型-超大型矿床 地球动力学 成矿过程 壳慢深部过程 战略性关键金属矿产 

分 类 号：P611[天文地球—矿床学] P541[天文地球—地质学]