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| 东天山板块构造分区、演化与成矿地质背景研究 | |
| 引用本文： | 秦克章,方同辉,王书来,朱宝清,冯益民,于海峰,修群业.东天山板块构造分区、演化与成矿地质背景研究[J].新疆地质,2002,20(4):302-308. |
| 作者姓名： | 秦克章 方同辉 王书来 朱宝清 冯益民 于海峰 修群业 |
| 作者单位： | 1. 中国科学院地质与地球物理研究所,北京,100029 2. 北京矿产地质研究所,北京,100012 3. 中国地质调查局,西安地质矿产研究所,陕西,西安,710054 4. 中国地质调查局天津地质矿产研究所,天津,300170 |
| 基金项目： | 中国地质调查局国土资源大调查项目(DK9902043)，国家自然科学基金项目(40072028)和国家“305”项目共同资助 |
| 摘 要： | 围绕东天山找矿的基础地质构造问题，编制了新的1：50万东天山地区大地构造图和1：100万东天山地区成矿规律图。划分出新的大地构造单元，确认了中天山结晶轴的存在。将东天山地区显生宇以来的大地构造演化划分为洋壳扩张、俯冲岛弧、弧后盆地和碰撞造山期及造山期后伸展5个阶段，各阶段分别形成了对应的矿床和矿床组合，明确了主要矿床如土屋铜矿（泥盆纪－早石炭世增生弧背景）、黄山－香山铜镍矿（早二叠世同碰撞背景）的成矿时代和成矿环境。 |
| 关 键 词： | 东天山地区 古生代 构造演化 岛弧 弧后盆地 成矿环境 成矿作用 成矿时代 |
| 文章编号： | 1000-8845(2002)04-302-07 |
| 修稿时间： | 2002年7月1日 |
PLATE TECTONICS DIVISION, EVOLUTION AND METALLOGENIC SETTINGS IN EASTERN TIANSHAN MOUNTAINS, NW-CHINA |
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| QIN Ke-zhang,FANG Tong-hui,WANG Shu-lai,ZHU Bao-qing,FENG Yi-min,YU Hai-fang,XIU Qun-yi.PLATE TECTONICS DIVISION, EVOLUTION AND METALLOGENIC SETTINGS IN EASTERN TIANSHAN MOUNTAINS, NW-CHINA[J].Xinjiang Geology,2002,20(4):302-308. | |
| Authors: | QIN Ke-zhang FANG Tong-hui WANG Shu-lai ZHU Bao-qing FENG Yi-min YU Hai-fang XIU Qun-yi |
| Abstract: | Eastern Tianshan is one of the most important Cu-Ni-Au metallogenic provinces in China. Focusing on the major tectonic geology and exploration problems, we compiled the latest tectonic map in 1 :500,000 scale and metallogenic map in 1 : 1,000,000 scale of Eastern Tianshan Mountains. The existence of the Middle-Tianshan crystalline axis of Pre-Cambrian was further confirmed. We distinguished some new tectonic units such as the Dananhu-Tousuquan island arc at the north, and Aqishan-Yamansu back-arc basin at the south rather than the previous recognized Aqishan-yamansu island arc. The tectonic evolution of Eastern Tianshan in Paleozoic can be divided into five stages ,i.e. oceanic spreading stage, subduction-accretionary stage, back-arc spreading stage, collisional orogenic stage and post-collisional extension stage. While special ore deposits and their association corresponding to each evolution stage were formed. The ore-forming age of Tuwu-Yandong porphyry Cu deposits are Early Carboniferous in accretionary arc selling, while Huangshan-Xiangshan mafic-ultramafic Cu-Ni deposits are formed in Early Permian in syn- or early post-collisionul settings. Some controversy reminded to further approach is also suggested. |
| Keywords: | Accretionary arc Back-arc basin Ductile shear zone Paleozoic tectonic evolution Metallogenic settings Eastern Tianshan |
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