Polygenetic Compound Mineralization and Tectonic Evolution: Study in the Middle-Lower Yangtze River Valley Metallogenic Belt
详细信息
- 责任者：Chang Yinfo (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Zhou Taofa
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(10)
- 关键词：成矿作用 ; metallogenesis ; 转换断层 ; transform faults ; 长江中下游成矿带 ; Metallogenic Belt of Middle and Lower Reaches of Yangtze River
- 页码：p.3067-3075
- 图表：illus., 40 refs.
- 分类号：1000
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
As the intense Mesozoic magmatism rebuild the pre-mineralization in the eastern China,this paper take the MiddleLower Yangtze River Valley metallogenic belt as an example of the eastern China to investigate the mineralization mechanisms of this kind of deposits. The mineralization process can be generally divided into two stages:At the early stage(145 to 136 Ma),high-K calc-alkaline series intrusion and copper and gold mineralization formed in a strike-slip compression tectonic setting,and at the later stage(135 to 127 Ma),shoshonitic series volcanic rocks with iron and sulfur mineralization formed in a strikeslip extensional environment.At the last stage(126 to 123 Ma),it formed alkaline volcanic rocks and A-type granitoids with iron,gold,molybdenum and uranium mineralization in the extension environment,which indicated the end of mineralization in the metallogenic belt.
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