Metallogenic Environment and Mineralization in Different Tectonic Dynamic System: A Case Study of Sanjing Compound Orogeny
详细信息
- 责任者：Ge Liangsheng (Gold Geological Institute ; CAPF ; Langfang 065000 ; China) ; Deng Jun
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(4)
- 关键词：造山运动 ; orogeny ; 成矿作用 ; metallogenesis ; 西南地区 ; Southwest China
- 页码：p.1115-1128
- 图表：illus., 100 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Modern mineral geological exploration is changing from single prospecting to systemic prospecting, and the systemic prospecting depends on redefinition of the metallogenetic environment and its confirming for the metallogenetic systems or mineralization along with the building of relationships of spatial-temporal and genesis of the corresponding deposit combination. Tectonic dynamic systems are base of study metallogenetic environment, which evolution decides regional metollagenetic environment spatial framework and its spatial-temporal transition. The metallogenetic environment in every tectonic dynamic system could be divided into extensional and extrusional. In oceanic tectonic dynamic systems, metallogenetic setting and mineralization mainly happened in the plate margins, which include dispersed plate margins and converging plate margins. Oceanic bridge, island arc, continental margin arc, different natures and scale basins developed in arc tectonic setting, which are all important metallogenetic space, and the plate itself features, the changing of process and depths and state about the plates subduction are important factors of deciding metallogenetic setting and mineralization in the plate margins; In continental tectonic dynamic systems, the main geologic setting including deep and giant faults tectonic activity, the mantle plumes or hot spots, the lithosphere increased to scales of delamination, intracontinental orogeny, intracontinental rifts valley etc., and various metallogenetic setting developed peculiar mineralization and deposit types; In transformed tectonic dynamic system, collision-extensional orogeny and developing oceanic rifts are two reverse tectonic processes, in which formed special metallogenetic environment and a lot of kinds of mineralization. The paper takes the Sanjinag compound orogeny as an example, mainly discusses metallogenetic features in all metallogenetic setting and in which deposit-type and corresponding deposit combination developed.
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