【摘要】 赣东北朱溪为钦杭成矿带新发现的重要钨铜多金属矿集区,位于钦杭结合带萍(乡)乐(平)坳陷带东部逆冲推覆抬升地段。朱溪矿集区燕山期受逆冲推覆构造影响,形成由新元古界变质基底与上古生界-中生界沉积盖层组成的构造岩片堆叠构造;具有逆冲推覆深断裂带控岩-控矿、碳酸盐岩构造岩片赋矿、燕山晚期浅层对冲构造破矿的构造背景;发育有燕山早期I型花岗闪长(斑)岩钼铜和S型花岗岩钨铜两个岩浆岩成矿系列,在空间上形成张家坞—月形与塔前—朱溪两个矿田、张家坞—毛家园和塔前—朱溪上下两个成岩台阶,下成矿台阶朱溪巨大钨铜矿床的发现打开了钦杭成矿带坳陷区"深地"找矿的一扇窗户。更多还原

【Abstract】 Zhuxi is a newly discovered W-Cu ore concentration area in the Qinzhou-Hangzhou metallogenic belt, northeastern Jiangxi Province. It is situated in the lifting area of the thrust nappe structure in eastern Pingxiang-Leping depression, QinzhouHangzhou orogenic juncture belt. Due to the Yanshanian thrust nappe tectonic events, the Zhuxi ore concentration area is dominated by Neoproterozoic metamorphic basement and Upper Paleozoic-Mesozoic tectonic slices. The ore deposits in this region are controlled by thrust nappe deep faults, hosted in carbonatite tectonic slices, and transformed by superficial hedge structures. The early Yanshanian metallogenesis can be subdivided into two groups:(1) Mo-Cu metallogenic system related to the I-type(porphyritic) granodiorite;(2) W-Cu metallogenic system related to the S-type granite. The Zhuxi area is characterized by two orefields(Taqian-Zhuxi and Zhangjiawu-Yuexing) and two magmatic steps(Maojiayuan-Zhangjiawu and Zhuxi-Taqian). The discovery of the Zhuxi giant W-Cu deposit opens a window for the deep mineral exploration in the geotectogene of the QinzhouHangzhou metallogenic belt.更多还原