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| 西天山地区金矿床主要成因类型及找矿方向 | |
| 引用本文： | 沙德铭,董连慧,鲍庆中,王宏,胡秀军,张建东,孙加鹏.西天山地区金矿床主要成因类型及找矿方向[J].新疆地质,2003,21(4):419-425. |
| 作者姓名： | 沙德铭 董连慧 鲍庆中 王宏 胡秀军 张建东 孙加鹏 |
| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁,沈阳,110006;中国地质调查局沈阳地质矿产研究所,辽宁,沈阳,110033 2. 新疆维吾尔自治区地质矿产勘查开发局,新疆,乌鲁木齐,830000 3. 新疆维吾尔自治区地质矿产勘查开发局第三地质大队,新疆,库尔勒,841000 4. 新疆维吾尔自治区地质矿产勘查开发局第一区域调查大队,新疆,乌鲁木齐,830011 5. 吉林大学地球科学学院,吉林,长春,130061 |
| 基金项目： | 国家科技攻关项目(8590204)、(969150306)，地质大调查项目(199910200218)共同资助 |
| 摘 要： | 西天山地区地处古亚洲构造域天山-兴蒙成矿带的西段，经历了漫长复杂的构造演化过程，尤其是海西期强烈的构造岩浆活动，为金成矿创造了有利的条件．近几年，本区找金工作取得了突破性的进展，相继发现了阿希、望峰、大山口等金矿床，显示了良好找金前景．根据前人和笔工作，讨论了本区主要金矿化类型浅成低温热液型(又进一步划分为冰长石-绢云母型和硅化岩型)斑岩型、韧性剪切带型穆龙套型等的成矿特征，在综合分析基础上，指出找矿方向． |
| 关 键 词： | 金矿床 成因 找矿方向 西天山地区 |
| 文章编号： | 1000-8845(2003)04-419-07 |
| 修稿时间： | 2003年1月29日 |
THE GENETIC TYPES OF GOLD DEPOSITS AND THEIR PROSPECTING IN WEST TIANSHAN MOUNTAINS |
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| SHA De-ming,DONG Lian-hui,BAO Qing-zhong,WANG Hong,HU Xiu-jun,ZHANG Jian-dong,SUN Jia-peng.THE GENETIC TYPES OF GOLD DEPOSITS AND THEIR PROSPECTING IN WEST TIANSHAN MOUNTAINS[J].Xinjiang Geology,2003,21(4):419-425. | |
| Authors: | SHA De-ming DONG Lian-hui BAO Qing-zhong WANG Hong HU Xiu-jun ZHANG Jian-dong SUN Jia-peng |
| Abstract: | As one of the important precious metal metal logenetic units in the Paleozoic erogenic belts in China, the West Tianshan Mountains, including Sailimu micro-massif, Boluohuoluo Early Paleozoic island arcs ,Yili Late Pateazoic rift valley, Nalati Paleozoic island arc belt and Haerke-Saaerming Paleozoic trench - arcs as a result of a complicated t.otonic evolution process, is favourable for gold ores forming. The discovery of large gold deposits like Axi and Wangling etc., 8 gold polymetallic ore deposits and more than 20 ore spots there, indicates that important breakthrough in gold ore prospecting have been made in west Tianshan Mountains. Based on the researches of predecessors and ours, the authors divided the main genetic types of gold deposits as epithermal deposit, ductile shear zone deposit, porphyry deposit and Muruntau type deposit. The epithermal type, which formed in Late Paleozoic Dahalajunshan formation volcanic rocks, are further divided into adular-sericite type and silicitied rock type. The ore-forming actions of gold deposits in the area were mainly happened in Hercynian, showing a characteristics of regional ore-forming time. The Au deposits are mainly formed in the mid-late Paleozoic continental volcanic belt on the edge of Yili rift. The ductile shear zones is related to the North Tianshan oceanic plate subduction in Shenglidaban area and the Haerke-Saaerming strench-arcs related to the South Tianshan oceanic plate subduclion to Yili sub-plate. Based on the resources analyzing, 4 Au ore-forming prospective areas are recognized, they are the Shenglidaban area in northwest Tianshan which the ductile shear zone developed well and is considered as main hunting area of ductile shear zone gold deposit, the Tulasu-Yelimodun area in middle west Tianshan which widely distributed with Lower Carboniferous Dahalajunshan formation continental volcanic-subvolcanic rocks is considered as the maim hunting area for epithermal gold deposits, the Wulansai'er-Dashankou and the Tulasudaban area in south west Tianshan which well developed with C-bearing fine fragmental rocks of upper Silurian and lower Devonian is considered as the prospective area of Muruntau type gold deposits. |
| Keywords: | the gold deposits the Au-ore genetic type the prospective area west Tianshan Mountains |
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