地学前缘 ›› 2011, Vol. 18 ›› Issue (2): 212-222.

• 论文 • 上一篇    下一篇

新疆包古图Ⅲ号岩体岩石学和锆石SHRIMP年代学研究

魏少妮,程军峰,喻达兵,郑波,朱永峰   

  1. 1. 造山带与地壳演化教育部重点实验室; 北京大学 地球与空间科学学院, 北京 100871
    2. 武警黄金第八支队， 新疆 乌鲁木齐 830057
  • 收稿日期:2011-01-20 修回日期:2011-03-01 出版日期:2011-03-15 发布日期:2011-04-15
  • 作者简介:魏少妮（1984—），女，博士研究生，矿床地球化学专业。E-mail：yfzhu@pku.edu.cn
  • 基金资助:

    国家国际科技合作项目（2010DFB23390）

 Petrology and SHRIMP zircon ages of intrusive body Ⅲ in Baogutu Area, Xinjiang.

  1. 1. Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education; School of Earth and Space Science, Peking University, Beijing 100871, China
    2. No8 Gold Geological Party of Chinese People’s Armed Police Force, rümqi 830057, China
  • Received:2011-01-20 Revised:2011-03-01 Online:2011-03-15 Published:2011-04-15

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摘要：

野外地质观测表明，包古图Ⅲ号岩体由两部分组成（北部的Ⅲ1和南部的Ⅲ2），Ⅲ1的岩性为花岗闪长岩和石英闪长岩，Ⅲ2的岩性为石英闪长岩、闪长岩和少量辉石闪长岩。挑选Ⅲ1岩体中部新鲜石英闪长岩样品，测得其锆石SHRIMP年龄为(313±3）Ma。包古图Ⅰ、Ⅱ、Ⅲ1、Ⅳ、Ⅴ号岩体具有相似的形成时间，集中在310~325 Ma，成矿作用发生在岩浆演化的晚期（316~310 Ma）。

关键词: 石英闪长岩, SHRIMP年龄, 包古图, 西准噶尔, 新疆

Abstract:

The intrusive body Ⅲ in the Baogutu area is composed of two separate parts (Ⅲ1 in north and Ⅲ2 in south). The lithologic units in Ⅲ1 are granodiorite and quartz diorite and those in Ⅲ2 are quartz diorite, diorite and a small amount of pyroxene diorite. A fresh quartz diorite sample from the central part of Ⅲ1 was dated to 313±3 Ma by zircon SHRIMP. Intrusive body Ⅰ, Ⅱ, Ⅲ1, Ⅳ and Ⅴ were formed during 310325 Ma. The copper mineralization occurred in 316310 Ma.

Key words:  quartz diorite, SHRIMP age, Baogutu, West Junggar, Xinjiang

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