摘要
综述了滇东北地区的沉积环境与区域地层和Ｐｂ、Ｚｎ、Ａｇ 矿床容矿层之间的关系，总结了前人对滇东北地区矿源层问题的认识。在此基础上，以成岩成矿过程的地质－ 地球化学体系为指导思想，分析了本区Ｐｂ、Ｚｎ 、Ａｇ 矿床成矿物质来源。指出了上震旦统－ 下寒武统、石炭系、中、上泥盆统地层既是本区Ｐｂ、Ｚｎ（Ａｇ） 矿床的重要矿源层，也是主要容矿层；寒武系中统是Ａｇ（Ｐｂ、Ｚｎ） 矿床的主要矿源层；碳酸盐岩是本区Ｐｂ、Ｚｎ、Ａｇ 矿床的主要矿源岩。
The relation between sedimentary environment and Pb-Zn-Ag deposit-hosting bed is described. The source of ore-forming material is inquired into in accordance with the geochemical system in paragenic and metallogenic process. It is suggested that Upper Sinian, Lower Cambrian, Carboniferous, Middle and Upper Devonian are the source bed and host rocks for Pb-Zn-Ag deposits. Carbonate provides the important source rock. The evolution of dolomitization and its role in the formation of source rocks are discussed.
出处
《矿产勘查》
1999年第6期333-339,共7页
Mineral Exploration
关键词
矿源层
铅锌银矿床
滇东北
source bed
Pb-Zn-Ag deposit
Northeast Yunnan
