Tectonic Facies and Mineralization in Tianjin
详细信息
- 责任者：Wen Xiuming (Tianjin Institute of Geological Survey ; Tianjin 300191 ; China)
- 刊名：Geological Survey and Research
- 出版年：2013
- 卷期：36(2)
- 关键词：大地构造相 ; tectonic facies ; 成矿作用 ; metallogenesis ; 天津 ; Tianjin
- 页码：p.123-130
- 图表：1 illus., 1 table, 28 refs.
- 分类号：1000
- issnNo：ISSN1672-4135
- isbnNo：CN12-1353/P
摘要
Under the guidance about theory of plate tectonics,the division of tectonic facies were made in Tianjin,and mineralization geologic structure environment was comprehensively summarized also.All kinds of deposits formed in the special geological process of geotectonic evolution under the specific tectonic facies environment,the mineralization and the geotectonic evolution are the close correlations.The research show that Neoarchean hornblende plagioclase gneiss formed in paleo-arc basins in which there is residual lenticle iron ore.In Changchengian period continental rift tectofacies contains very important non-metallic minerals such as potassium and shale.Meso-Neoproterozoic the stable epicontinental marine environment contains shale,iron,manganese,boron,cement,limestone and other minerals.In the later period of Indosinian the plate mountain building environment has the igneous complex forming phosphorus deposit.After magmatic time there are hydrothermal deposit gold,tungsten,lead,zinc and so on.The contact metasomatic deposit(skarn) has copper,molybdenum,pyrite and other metal minerals.Terrigenous clastic sediments in the Cenozoic period is rich in kerogen shale,oil and other minerals.The purpose of this work is to study the relationship between all kinds of tectonic facies unit and mineralization structural system,and mineralization type,and summarize the rule,establish tectonic facies and mineralization relationship between formation time and the combination of rock strata.