Characteristics of Lead-Zinc Deposits in Gangdise Metallogenic Belt, Tibet, China
详细信息
- 责任者：Zhang Zunzun (Wuhan Center of Geological Survey ; Wuhan 430205 ; China) ; Li Zeqin
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2013
- 卷期：28(1)
- 页码：p.34-40
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
摘要
The Pb-Zn deposits located in Gangdise metallogenic belt can be classified into the skarn type(contact metasomatism skarn type and strata bound skarn type) and the hydrothermal vein type.Late Yanshan period of Mesozoic(157.41±1.20) Ma),Early Himalayan period(65-40 Ma)and Late Himalayan period(25-10 Ma) of Cenozoic are the main metallogenic epochs.The skarn type of Pb-Zn deposits are mainly formed in the Early Himalayan period,the hydrothermal vein type in Late Himalayan period.Late Palaeozoic Carboniferous-Permian system is the main ore-bearing strata then the strata of Mesozoic Jurassic-Cretaceous system.The deposits occur in EW belt and SN string and cluster in local geological structural unit.Formation of the Pb-Zn deposits is controlled by important geological events and is the product of combination of two or more of these geological events.The strata bound skarn lead-zinc deposit is one of the main mineralization in Gangdise metallogenic belt and is formed by inter-superimposition of tectonic reworkings and magmatic-hydrothermal activities on the hot-water sedimentary mineralization.