摘要
布尔克斯岱金矿床是新疆北部萨吾尔山东段重要的金矿床之一,对该金矿床成矿阶段两个石英样品进行快中子活化法测年,谱线特征均为马鞍型,其坪年龄分别为(335.5±0.3) Ma、(336.2±0.4) Ma,最小视年龄分别为(334.9±8.3) Ma、(334.6±10.3) Ma,等时线年龄分别为(335.5±1.2) Ma、(336.8±0.5) Ma。坪年龄代表了含金石英脉的形成时代,相当于晚海西期。新疆北部金矿形成可能与碰撞造山作用有关。
Buerkesidai gold deposit is one of the important gold deposits in east segment of the Sawuer Mountain, Northern Xinjiang. Two quartz (formed in ore-forming stage) samples collected from the Buerkesidai gold deposit were determined by ()^(40)Ar-^(39)Ar fast-neutron activation techniques, and their spectra are characterized by the saddle-shape. The samples obtained plateau ages of (335.53±0.32) Ma and (336.16±0.39) Ma, minimum appearance ages of (334.85±8.25) Ma and (334.55±10.25) Ma and isochron ages of (335.53±1.19) Ma and (336.78±0.50) Ma respectively. The three ages are close to each other, indicating the reliability of the ages of the quartz samples. The plateau ages belong to Hercynian epoch and could represent the forming age of the gold-bearing quartz vein. Gold metallogenesis in northern Xinjiang is thought to be related to collision orogeny.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2005年第1期12-16,共5页
Journal of Jilin University：Earth Science Edition
基金
中国科学院创新工程项目(KZCX3-SW-137)
国家科技攻关项目(2001BA609A-07-08)
