摘要
埠上金矿位于胶东金岭金矿田中北部,该文拟通过对区内典型矿石详细的岩石学、矿物学、地球化学研究,并结合大地构造学特征进行综合研究,试图揭示该矿床的矿床成因。通过详细的地球化学研究发现:该区矿石为受气液作用而成的含较多硅质矿物、金属矿物的变质岩;是由受较多岩浆的气液流体交代作用而成的;该区金矿形成于造山期,来源于洋壳俯冲带析出的流体交代原始地幔形成的EM1型富集地幔岩浆区,是EM1型富集地幔基性岩浆析出的气液流体交代壳源物质而成的产物。
Bushang gold deposit locates in middle and north part of Jinling gold deposit in Jiaodong area. In this paper, through detailed study on petrology, mineralogy and geochemistry of typical ores, combining with characteristics of geotectonics, comprehensive study has been carried out to reveal the deposit genesis. Through detailed geochemical study, it is found that rocks in this area are metamorphic rocks containing more siliceous minerals and metallic minerals. It is formed by gas-liquid metasomatism. Gold deposits were formed in the orogenic period. Its sources came from EM 1 type enriched mantle magma formed by the subduction of oceanic crust with precipitation of fluid metasomatism. It is the metasomatic product of gas-liquid fluid which precipitated from EM1 type enriched mantle mafic magmas and shell source materials.
出处
《山东国土资源》
2015年第11期20-25,共6页
Shandong Land and Resources
关键词
埠上金矿
地球化学
胶东
Bushang gold deposit
geochemistry
Jiaodong area
