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| 西藏冈底斯尼雄超大型富铁矿的成矿地质特征 | |
| 引用本文： | 曹圣华,李德威,余忠珍,袁建芽,吴旭铃,胡为正.西藏冈底斯尼雄超大型富铁矿的成矿地质特征[J].大地构造与成矿学,2007,31(3):328-334. |
| 作者姓名： | 曹圣华 李德威 余忠珍 袁建芽 吴旭铃 胡为正 |
| 作者单位： | 1. 中国地质大学地球科学学院,湖北,武汉,430074;江西省地质调查研究院,江西,南昌,330030 2. 中国地质大学地球科学学院,湖北,武汉,430074 3. 江西省地质调查研究院,江西,南昌,330030 |
| 基金项目： | 中国地质调查局区域地质调查项目，国家重点基础研究发展计划(973计划) |
| 摘 要： | 近年来在班公湖-怒江成矿带南侧的冈底斯北带发现尼雄超大型富铁矿床。通过详细的野外地质调查和室内测试分析,从构造演化和成矿演化的角度对冈底斯措勤县尼雄富铁矿的地质特征和构造控矿规律进行了初步的研究。认为本区富铁矿主成矿期为晚白垩世,形成于板块俯冲、碰撞造陆到青藏高原新生代板内造山、地壳增厚、隆升伸展的重大构造转换过程中。与冈底斯南缘晚新生代斑岩型铜矿床相比,显示青藏高原大规模成矿具有从北向南迁移演化的规律。 |
| 关 键 词： | 地质特征 矽卡岩型富铁矿 成矿构造 尼雄 冈底斯 |
| 文章编号： | 1001-1552（2007）03-0328-07 |
| 修稿时间： | 2006-12-04 |
METALLOGENIC AND GEOLOGICAL CHARACTERISTICS OF THE NIXIONG SUPERLARGE MAGNETITE DEPOSIT IN GANGDESE, TIBET |
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| CAO Shenghua,LI Dewei,YU Zhongzheng,YUAN Jiangya,WU Xuling,HU Weizheng.METALLOGENIC AND GEOLOGICAL CHARACTERISTICS OF THE NIXIONG SUPERLARGE MAGNETITE DEPOSIT IN GANGDESE, TIBET[J].Geotectonica et Metallogenia,2007,31(3):328-334. | |
| Authors: | CAO Shenghua LI Dewei YU Zhongzheng YUAN Jiangya WU Xuling HU Weizheng |
| Institution: | 1. Faculty of Earth Science, China University of Geosciences, Wuhan, HB 430074, China ; 2. Jiangxi Institute of Geological Survey, Nanchang, JX 330030, China |
| Abstract: | The Nixiong superlarge iron deposit, located in the northern Gangdese tectono-metallogenic belt, was discovered in recent years. Based on a detailed geological investigation and experimental analysis, the geological characteristics and rules of tectonic metallogeny for the Nixiong superlarge magnetite deposits were discussed preliminarily in this paper, in terms of the relationship between tectonic evolution and metallogenic evolution. The main metallogenic epoch for the Nixiong superlarge magnetite deposit is late Cretaceous, in which important tectonic transitional processes ranging from Tethys closure, plate collision to intraplate orogeny, crustal thichkening, thermal uplifting and extension occur. The large-scale intraplate metallogeny in the Qinghai-Tibet Plateau shows the rules of evolution from the north to the south as compared with the porphyry copper deposits in the south Gangdese. |
| Keywords: | geological characteristic skarn iron deposit metallogenic structure Nixiong Gangdese |
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