新泰市岳家庄金矿构造控矿特征

Ore-control-structure Features of Yuejiazhuang Gold Deposits in Xintai City, Shandong Provice,China

新泰市岳家庄金矿区位于鲁西地区中南部的下港 -化马湾 -蒙山构造岩浆杂岩带内。该杂岩带发育在新太古代花岗岩—绿岩带中 ,并经受了韧性剪切带和多期次脆性断裂活动的改造。带内分布有燕山期脉岩、火山岩和以金为主的多金属元素组合异常 ,因此是有利的金矿成矿构造带。本文通过对岳家庄金矿区控矿构造体系的详尽分析 ,认为韧性剪切带属中温中部构造层次的压剪性韧性变形。它与雁翎关岩组的复合部位是金富集的有利部位 。

Yuejiazhuang gold deposits in Xintai City locates in Xiagang Huamawan Mengshan tectonomagmatic complex belt Shandong province, North China. The rocks in the area are Archean TTG green belts. Multiphase ductile shear zones and Guanshantou fault controlled both magmatic activities, volcanic eruption and distribution of polymetallic association anormaly, and many gold fields, such as Muwa, Huamawan, Yuejiazhuang and so on. The temperature was very high and the differential stress is a little lower during the ductile shear deformation. It is the best metallogenic range that composed of the retrograde metamorphic zone in ductile shear zone and brittle fault, and NW strike fault are major ore structures.