The Tectonic Evolution of the Xicheng Ore Concentrated Area in Qinling Mountain and Its Relation to Lead-Zinc Mineralization

详细信息   

• 责任者：Zhu Duolu (College of Earth and Environmental Sciences ; Lanzhou University ; Lanzhou 730000 ; China) ; Sun Bainian
• 刊名：Acta Geologica Sinica
• 出版年：2012
• 卷期：86(8)
• 关键词：铅锌矿床 ; lead-zinc deposit ; 构造演化 ; structural evolution ; 秦岭 ; Qinling Mountains
• 页码：p.1291-1297
• 图表：3 illus., 23 refs.
• 分类号：1001
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

摘要

Based on the comprehensive analyses of the geology of Xicheng ore concentrated area in Qinling Mountain, this study classified the lead-zinc mineralization into Caledonian （before the main metallogenic period）, Hercynian （earlier stage of the main metallogenic period）,  Indosinian （later stage of the main metallogenic period） and Yanshanian Epochs （after the main metallogenic period）. The deposits formed at different stages have different ore types, and the formation and distribution of the deposits is closely related to structures. Late Early Paleozoic extensional depression and Middle Mesozoic intracontinental orogensis played a vital role in the metallic mineralization in the ore concentrated area. The former geologic process resulted in the formation of hydrothermal sedimentary basin and exhalative-sedimentary metallogenesis, while the latter resulted in the extensive regional tectonism and magmatism, both of which reformed the existed lead-zinc deposits.