山东焦家金矿矿床成因及成矿模式

胶东矿集区是我国金矿资源的主要密集区,重点解剖焦家金矿有助于深化对区域同类矿床的成因认识.文章从矿床地质、矿床地球化学、稀土元素地球化学、同位素地球化学、成矿流体以及成矿构造环境等几个方面对该矿床进行了研究,在上述的基础上探讨了焦家金矿的矿床成因模式,认为华北板块与华南板块碰撞的后造山作用引起的构造转折,导致地壳拉张,深部物质上涌,在有利的部位大规模成矿.

GENESIS AND METALLOGENIC MODEL OF JIAOJIA GOLD DEPOSIT, SHANDONG

Jiaodong gold ore concentration area is one of the largest gold ore concentrating regions in China, and the Jiaojia - type gold deposits were named just at the Jiaojia gold mine. So, taking focus on the Jiaojia gold mine will make a contribution to recognize genesis of the same deposits in the Jiaodong area. The study is carried through from ore geology, geochemical feature, rare earth element geochemistry, isotope geochemistry, ore -forming fluids and metallogenetic geotectonic settings. At last, mineralization model d the Jiaojia gold mine is discussed. The collision orogeny between South China plate and North China plate leads to tectonic transformation, which brought about crustal extension, mantle material upwening, and large scale mineralization at advantageous position.