地质通报2011,Vol.30Issue(4):469-477,9.
初论成矿系统的时空结构及其构造控制
Primary discussion on the temporal-spatial structure and tectonic controls of metallogenic systems
摘要
Abstract
From the view of the temporal and special domain of ore mineralization, the hierarchies and tectonic controls on metallogenic systems are focused to discuss in this paper. Generally, the time limits often correspond to geotectonic cycles or independent tectonic stages for endogenetic metallogenic systems, and those correspond to geological chronologies (era, period, epoch) for sedimentary and metamorphic ones. According to spatial scale, metallogenic systems can be divided into seven hierarchies, which include global,giant, large, normal, sub, filial and sub-filial systems from large to small. And the seven hierarchies correspond to globe, metallogenic domain, metallogenic province, metallogenic belts, ore districts, ore field and ore deposit respectively. Developing of the junior metallogenic system is controlled by the senior one, and they are controlled by multi- metallotectonic systems. According to the above view, this paper expatiated on the type and the temporal-spatial structure of as well as the tectonic controls on the metallogenic systems of iron-copper-gold metallogenic belt along middle-lower reaches of the Yangtze River. The regional faults-magmatic network system was the dominant factor that determined hierarchies of the magma- hydrothermal metallogenic system formed during Yanshanian. And the faults-magma network system in the ore filed had a model of "three-tier structure", which controlled the distribution zoning of the filial metallogenic system. Successively the various intrusive-contact structures made the sub-filial metallogenic system and the ore deposits distinctive. So coupling of the tectonic and the magmatism is the important dynamic mechanism to control the development of the metallogenic systems. And relatively continuous and stable tectonic stress field, as well as ore-forming fluid system, was the favorable conditions that formed large ore fields (deposits) in the area.关键词
成矿系统/时空结构/成矿构造体系/断裂-岩浆网络体系/长江中下游Key words
metallogemc system/ the space-time structure/ tectonic system of metallogenesis/fault-magmatic network system/ middlelower reaches of the Yangtze River分类
天文与地球科学引用本文复制引用
姚书振,周宗桂,宫勇军,丁振举..初论成矿系统的时空结构及其构造控制[J].地质通报,2011,30(4):469-477,9.基金项目
中国地质调查局地质大调查项目《秦岭及其邻区成矿条件及选区研究》(编号:1212010631007)、湖北省自然科学基金重大项目《鄂东大冶式铁矿深部找矿理论与方法研究(编号:2007ABD006)和国家科技攻关项目《长江中下游铜金矿床矿田构造研究》(编号:85-901-03-09B) (编号:1212010631007)