Discovery of Peperite in Southern  Qinghai Province and Its Inspiration to Exploration of Volcanogenic Massive Sulfide (VMS) Deposits

详细信息   

• 责任者：Yang Zhiming (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Hou Zengqian
• 刊名：Mineral Deposits
• 出版年：2008
• 卷期：27(3)
• 关键词：火山碎屑岩 ; pyroclastics ; 安山岩 ; andesites ; 铁矿 ; iron ores ; 水热矿床 ; hydrothermal deposits ; 青海 ; Qinghai
• 页码：p.336-344
• 图表：6 illus., 21 refs.
• 分类号：0801
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

摘要

Peperite, a genetic term for a rock formed essentially in-situ by disintegration of magma intruding and mingling with unconsolidated or poorly consolidated, typically wet sediments. The study of peperite is important for several reasons. A detailed petrological study indicates that most of the zigzag clasts were generated by in-situ quenches fragmentation of andesitic magma. The sediments were formed by sedimentary exhalation, and remained wet when mingling happened. Therefore, the Kaixinling iron deposit, which was originally thought to be a product of hydrothermal replacement, should be a VMS deposit.