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| 初论环准噶尔斑岩铜矿带的地质构造背景与形成机制 | |
| 引用本文： | 董连慧,徐兴旺,屈迅,李光明.初论环准噶尔斑岩铜矿带的地质构造背景与形成机制[J].岩石学报,2009,25(4):713-737. |
| 作者姓名： | 董连慧 徐兴旺 屈迅 李光明 |
| 作者单位： | 1. 中国科学院矿产资源研究重点实验室,中国科学院地质与地球物理研究所,北京,100029;新疆维吾尔自治区地质矿产勘查开发局,乌鲁木齐,830000 2. 中国科学院矿产资源研究重点实验室,中国科学院地质与地球物理研究所,北京,100029 3. 新疆维吾尔自治区地质矿产勘查开发局,乌鲁木齐,830000;中国地质大学,北京,100083 |
| 基金项目： | 中国科学院知识创新工程主要方向项目（KZCXZ-YW-107）、“十一五”国家科技支撑计划重点项目（2006BAB07B01-03）与中国科学院矿产资源重点实验室基金 |
| 摘 要： | 准噶尔地区构造-岩浆-成矿带具环准噶尔地块分布的特征，这一格局是准噶尔地区古生代大地构造演化的结果。哈萨克斯坦-准噶尔板块在北侧古亚洲洋与南侧南天山洋的俯冲下不断侧向增生，并形成与岩浆作用伴生的火山岩型铜铁多金属矿带、斑岩铜钼金矿带与浅成低温金矿带。哈萨克斯坦-准噶尔板块与西伯利亚板块和塔里木板块碰撞发生了强烈挤压-剪切变形，并导致准噶尔地块发生逆时针旋转，从而造成构造-岩浆-成矿带发生位移、呈环状分布于准噶尔地块周边。环准噶尔斑岩铜矿形成于俯冲成因的大陆岛弧、大洋岛弧与弧后盆地及后碰撞阶段板内4种构造背景，晚古生代是成矿的高峰时期。 |
| 关 键 词： | 斑岩铜矿 环准噶尔 构造背景 形成机制 |
| 收稿时间： | 2008/10/21 0:00:00 |
| 修稿时间： | 2009/2/19 0:00:00 |
Tectonic setting and formation mechanism of the circum-Junggar porphyritic copper deposit belts |
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| DONG LianHui,XU XingWang,QU Xun and LI GuangMing.Tectonic setting and formation mechanism of the circum-Junggar porphyritic copper deposit belts[J].Acta Petrologica Sinica,2009,25(4):713-737. | |
| Authors: | DONG LianHui XU XingWang QU Xun and LI GuangMing |
| Institution: | Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, CAS, Beijing 100029, China;Xinjiang Bureau of Geology and Mineral Resources, Uramuqi 830000, China;Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, CAS, Beijing 100029, China;Xinjiang Bureau of Geology and Mineral Resources, Uramuqi 830000, China; China University of Geosciences, Beijing 100083, China;Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, CAS, Beijing 100029, China |
| Abstract: | Tectonics, magmatism and mineralization belts in the Junggar area are circularly present around Junggar block, it was results of Paleozoic tectonic evolution of Junggar block. The Kasakhstan-Junggar plate was subducted by the Paleo-Asian oceanic plate at north side and by the South Tianshan oceanic plate at south side in Paleozoic era. Magmatic rock belts and associated volcanic rock-type Cu-Fe polymetallic deposit belts, porphyritic Cu-Mo-Au deposit belts and epithermal gold deposit belts were formed both in the south and north arc-basin systems. The Kasakhstan-Junggar plate was collided with Siberia plate and Tarim plate and intensively compressed, sheared and broken, resulting in anticlockwise rotation of Junggar block, dislocation of tectonics, magmatism and mineralization belts to surround the Junggar block. Porphyry copperitic Cu deposits around Junggar block were formed in four tectonic settings including continental arc, ocean island arc and backarc basin related to plate subduction and intraplate at post collision period, and the later Paleozoic era was the major main mineralization formation period. |
| Keywords: | Porphyry deposits Circum-Junggar block Tectonic setting Formation mechanism |
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