The Continental Growth and Ore-Forming Processes
详细信息
- 责任者：Li Wenyuan (Xi’an Center of Geological Survey ; CGS ; Xi’an 710054 ; China)
- 刊名：Northwestern Geology
- 出版年：2013
- 卷期：46(1)
- 关键词：地壳生长 ; crustal growth ; 成矿作用 ; metallogenesis
- 页码：p.1-10
- 图表：illus., 18 refs.
- 分类号：1000
- issnNo：ISSN1009-6248
- isbnNo：CN61-1149/P
摘要
The formation of ore deposits is, nevertheless, related to much the same sort of processes that gave rise to the formation of normal igneous, sedimentary, and metamorphic rocks in the Earth′s crust. The fact that close relationship exists between rock-forming and ore-forming processes means that metallogeny must be relevant to understanding the nature of crustal evolution through geological time. There are essentially two ways to do this. One is to empirically describe ore deposits in the tectonic environment and host rocks in which they occur. The other is to chart continental evolution and place ore deposits into a secular and tectonic framework. The former has been covered in considerable detail, and the latter is a more difficult undertaking and requires a thorough knowledge of the evolution of continents with time. It is difficult, particularly, that understanding ore-forming processes in amalgamation and dispersal of active continent by limitation in conventional undertaking. In this paper, it is applied that the point of view of active global tectonics, from rates of continental growth, evolution of the hydrosphere and atmosphere, secular evolution in global heat production into historic records of sea-level changes, to groping summary ore-forming processes in a setting of active global evolution in order to energizing more thorough research in this specialty.