| 东准噶尔晚石炭世构造体制转变:来自A2型流纹岩的证据 |
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| 引用本文： | 熊双才,李广,张征峰.东准噶尔晚石炭世构造体制转变:来自A2型流纹岩的证据[J].地质力学学报,2019,25(S1):49-52. |
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| 作者姓名： | 熊双才 李广 张征峰 |
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| 作者单位： | 新疆地矿局第一地质大队, 新疆 昌吉 831100,新疆地矿局第一地质大队, 新疆 昌吉 831100,新疆地矿局第一地质大队, 新疆 昌吉 831100 |
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| 基金项目： | 中央返还新疆两权价款"新疆巴里坤县1∶5万L46E020016（玫瑰泉幅）等六幅区域地质调查"（T15-1-LQ01） |
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| 摘 要： | 老爷庙地区位于东准噶尔东部,是中亚造山带的重要组成部分。老爷庙流纹岩与典型A型花岗岩相似,成因类型上属A2型流纹岩,产于后碰撞环境。锆石U-Pb定年显示其形成于（311.6±3.1） Ma,属晚石炭世。综合文中数据及区域地质特征,老爷庙地区在晚石炭世已经拼贴到西伯利亚板块,进入后碰撞向板内转化的过渡期,结束了该区洋陆过渡环境。
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| 关 键 词： | 东准噶尔 老爷庙 后碰撞环境 A2型流纹岩 晚石炭世 |
LATE CARBONIFEROUS TECTONIC REGIME TRANSITION IN EAST JUNGGAR: EVIDENCE FROM A2-TYPE RHYOLITE |
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| XIONG Shuangcai,LI Guang and ZHANG Zhengfeng.LATE CARBONIFEROUS TECTONIC REGIME TRANSITION IN EAST JUNGGAR: EVIDENCE FROM A2-TYPE RHYOLITE[J].Journal of Geomechanics,2019,25(S1):49-52. |
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| Authors: | XIONG Shuangcai LI Guang and ZHANG Zhengfeng |
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| Affiliation: | No.1 Geological Party, Xinjiang Bureau of Geology and Mineral Resources, Changji 831100, Xinjiang, China,No.1 Geological Party, Xinjiang Bureau of Geology and Mineral Resources, Changji 831100, Xinjiang, China and No.1 Geological Party, Xinjiang Bureau of Geology and Mineral Resources, Changji 831100, Xinjiang, China |
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| Abstract: | Laoyemiao area is located in east of east Junggar, known as the important tectonic metallogenic belt of the Central Asian Orogenic Belt. Laoyemiao rhyolite is similar to the typical A-type granite, and the genetic type belongs to A2-type rhyolite, which is produced in post-collision environment. Zircon U-Pb dating shows that it was formed at (311.6±3.1)Ma in the Late Carboniferous. Based on the data and regional geological features, Laoyemiao area has been planted into the Siberian plate in the Late Carboniferous, entering the transition period from the post-collision to the intraplate transformation, and put an end to the ocean-land transition environment. |
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| Keywords: | east Junggar Laoyemiao post-collision environment A2-type rhyolite Late Carboniferous |
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