成矿作用的空间分布不均匀性及其控制因素探讨

全球矿产资源时空分布的不均匀性及其形成机制,已成为地球科学关注的热点和前沿领域。本文在对全球矿产资源的空间分布规律及其不均匀性分布特点的研究进展进行全面阐述的基础上,重点分析了控制成矿作用空间分布不均匀性的主要因素,如地壳组成与演化的差异、地壳/地幔化学组成的不均一性、成矿构造环境的差异、重大地质构造事件的影响、构造转换或转折和叠加、矿床形成与保存能力等。研究认为,深刻理解全球矿产资源空间分布的不均匀性特征及其形成的根本原因,应加强以下五个方面的研究:①大陆成矿作用的空间分布不均匀性的机制;②从全球构造角度,揭示成矿作用的时空分布规律;③强调深部成矿过程,以阐明成矿作用不均匀性原因;④加强成矿系统、成矿系列研究;⑤加强矿产资源时空分布不均匀性的形成机制研究。

Spatially Heterogeneous Distribution of Metallogenesis and its Controlling Factors

Temporal and spatial heterogeneous characteristics of the global mineral resources and its formation mechanism have now become hotspots and leading field of the earth science system. Based on researches on the spatial distribution and its heterogeneity of the global mineral resources, the authors analyzed the major factors controlling the spatially heterogeneous distribution of metallogenesis, which include:① the differentiation of the crustal components and evolution,② the chemical heterogeneity of the crust and mantle,③ the diverse ore-forming tectonic settings,④ the constraints of important geological and tectonic events,⑤ the tectonic and/or structural transformation or change and superimposition, and ⑥ the abilities of formation and preservation of ore deposits/bodies. In order to understand the heterogeneous distribution of the global mineral resources, the authors point out that the future work should focus on the following five aspects:① the mechanism of the spatially heterogeneous distribution of continental metallogenesis,② spatial distribution of metallogenesis in the context of the global tectonics,③ the factors control the spatial heterogeneous distribution of metallogenesis, especially the deep-seated metallogenic process(es),④ mineral systems and ore deposit series, and ⑤ the mechanism of the spatially heterogeneous distribution of the global mineral resources.