| 西昆仑山北部早古生代构造－岩浆带的发现 |
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| 引用本文： | 许荣华 Vidal,P.西昆仑山北部早古生代构造－岩浆带的发现[J].地质科学,1994,29(4):313-328. |
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| 作者姓名： | 许荣华 Vidal P |
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| 作者单位： | 1. 中国科学院地质研究所 北京 100029;2. 中国科学院广州地质新技术研究所 广州 510640;3. Universite Blaise Pascal Clermont-Ferrand France;4. 中国地质科学院地质研究所 北京 100037 |
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| 摘 要： | 1987年以来,先后做了4条横穿昆仑山的综合路线地质调查。它们是:中-巴公路沿线;新-藏公路沿线;于田县普鲁村-苏巴什-硫磺达坂路线;青海茫崖镇-祁曼塔格路线。在西昆仑山北部的调查区内,都有钙-碱性的深成岩体出露。通过对这些岩体系统地做U-Pb、Ar-Ar及Rb-Sr定年研究,发现它们具有早古生代年龄(384-480Ma),延伸上千公里,形成于活动大陆边缘或碰撞后的构造环境,常与属于蛇绿岩套的组分相伴生。这充分说明在青藏高原内部存在一条新发现的缝合带。
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| 关 键 词： | 昆仑山 花岗岩类 古生代 地质年代学 构造－岩浆带缝合带 |
| 收稿时间： | 1993-09-10 |
| 修稿时间： | 1993-09-10; |
A DISCOVERY OF AN EARLY PALEOZOIC TECTONOMAGMATIC BELT IN THE NORTHERN PART OF WEST KUNLUN MOUNTAINS |
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| Xu Ronghua,Zhang Yuquan,Xie Yingwen,Chen Fukun,Ph. Vidal,N. Arnaud,Zhang Qiaoda,Zhao Dunming.A DISCOVERY OF AN EARLY PALEOZOIC TECTONOMAGMATIC BELT IN THE NORTHERN PART OF WEST KUNLUN MOUNTAINS[J].Chinese Journal of Geology,1994,29(4):313-328. |
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| Authors: | Xu Ronghua Zhang Yuquan Xie Yingwen Chen Fukun Ph Vidal N Arnaud Zhang Qiaoda Zhao Dunming |
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| Institution: | 1. Institute of Geology, Chinese Academy of Sciences, Beijing 100029;2. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002;3. Universite Blaise Pascal Clermont-Ferrand France;4. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 |
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| Abstract: | Since 1987, totally four integrated geological investigation profiles across the West Kunlun Mountains were performed. They are: (1)Profile along the Sino-Pakistan highway (from Kashigar to Kunjirap Pass); (2)Profile along the XinjiangXizang highway .(from Yecheng to Shiquanhe); (3) Pulu Village, Yutian CountySubaxi-Liuhuang Pass profile, and(4) Mangnai Town, Qinghai-Qimantaga-Muzhtaga peak profile. In the investigation region, in the northern part of the West Kunlun Mountains calc-alkaline plutonic rocks are exposed. Systematical geochronological studies of the plutonic rocks have been done, in the paper 5 U-Pb dating on the zircons,3 Ar-Ar dating on the honblende and biotites and 5 Rb-Sr dating on the wholerocks and minerals from the plutons are reported. These results enabled us to find an early Paleozoic (384-480Ma) tectono-magmatic belt, extending for a thousandof kilometers. It was formed on an active continental margin or in a postcollisional tectonis envionment, and is accompanied with a complex belonging to ophiolite suit in Kudi, Subaxi and Oy ag area. It is a newly found and defined suture zonein the interior of the Qinghai-Xizang Plateau. |
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| Keywords: | Kunlun Mountains Paleozoicera Geochronology Granitoid Tectono-magmatic belt Suture zone |
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