黄金科学技术 ›› 2023, Vol. 31 ›› Issue (3): 378-386.doi: 10.11872/j.issn.1005-2518.2023.03.182
Zhigang LIU(),Aikui ZHANG,Yongle LIU,Yong ZHANG,Shuyue HE,Feifei SUN
摘要:
阿其音金矿位于东昆仑成矿带西段,是一个产于似斑状石英二长岩内受构造控制的金矿床。为了确定阿其音金矿床的成矿时代,对该矿床与金矿化有关的蚀变花岗斑岩中的绢云母进行了40Ar-39Ar 年龄测试,获得绢云母的加权平均年龄分别为(263.2±4.5)Ma和(268.7±9.7)Ma。结果表明:阿其音金矿的成矿时代主要为中二叠世,该成果对于进一步认识东昆仑西段金矿床的成因机制、地球动力学背景以及区域金矿勘查具有重要意义,东昆仑地区是否存在中二叠世金矿成矿应引起足够重视。
中图分类号:
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