北祁连榆树沟山金矿区花岗闪长斑岩脉锆石U-Pb年龄、地球化学特征及其地质意义

杨彦,黄增保,郭小刚,许延龙,颜华

Zircon U-Pb Age and Geochemical Characteristics of Granodiorite Porphyry Veins in Yushugoushan Gold Deposit，Northern Qilian Mountain，and Its Geological Significance

Yan YANG,Zengbao HUANG,Xiaogang GUO,Yanlong XU,Hua YAN

图2 榆树沟山金矿床地质简图（修改自王洋等，2020） 1.第四系全新统；2.新近系疏勒河组；3.白垩系下沟组；4.奥陶系阴沟群变砂岩；5.奥陶系阴沟群绢云绿泥板岩；6.花岗闪长斑岩脉；7.金矿化蚀变带及编号；8.勘探线

Fig.2 Geological map of Yushugoushan gold deposit（modified after Wang et al.，2020）