| 新疆东天山中生代金属成矿动力学背景研究 |
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| 引用本文： | 梁志录, 张振亮, 冯选洁. 新疆东天山中生代金属成矿动力学背景研究[J]. 西北地质, 2018, 51(1): 218-227. |
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| 作者姓名： | 梁志录 张振亮 冯选洁 |
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| 作者单位： | 1.甘肃地质矿产勘查开发局, 甘肃 兰州 730050;; 2.中国地质调查局西安地质调查中心, 陕西 西安 710054 |
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| 基金项目： | 国土资源部公益性行业科研专项课题“西天山阿吾拉勒铁铜多金属矿床综合研究”（201211073-02）、国土资源大调查项目“新疆重要成矿带矿产勘查部署”（1212010813046） |
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| 摘 要： | 中生代是东天山地壳演化过程中一个重要的构造转换阶段，形成了两期金属矿床：印支期和燕山期矿床。笔者论述了东天山印支期、燕山期成矿特征和地球动力学背景，认为印支期矿床形成主要与塔里木以北地区由南向北的挤压和推覆作用而产生的大规模韧性剪切变形与岩浆活动有关，部分矿床（钒钛磁铁矿）与早侏罗纪新疆地区普遍发育的板内伸展作用有关；燕山期矿床形成主要与蒙古一鄂霍茨克洋向南北两侧俯冲而发生的岩浆侵位有关。这个结论对新疆东部找矿具有重要的指导意义。
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| 关 键 词： | 东天山 中生代 金属成矿作用 动力学背景 |
| 收稿时间： | 2017-10-09 |
| 修稿时间： | 2017-12-11 |
Dynamic Background of Mesozoic Metallic Mineralization in East Tianshan Mountains,Xinjiang |
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| LIANG Zhilu, ZHANG Zhenliang, FENG Xuanjie. Dynamic Background of Mesozoic Metallic Mineralization in East Tianshan Mountains, Xinjiang[J]. Northwestern Geology, 2018, 51(1): 218-227. |
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| Authors: | LIANG Zhilu ZHANG Zhenliang FENG Xuanjie |
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| Affiliation: | 1.Gansu Provincial Bureau of Geology and Minerals Exploration and Development, Lanzhou 730050, Gansu, China;; 2.Xi'an Center of China Geological Survey, Xi'an 710054, Shaanxi, China |
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| Abstract: | Mesozoic era is an important phase of structure transformation during the crustal evolution of east Tianshan Mountains, when many ore deposits were formed in Indosinian epoch and Yanshanian epoch.In this paper, the geological feature and dynamic background of Mesozoic (Indosinian and Yanshanian)metal mineralization in east Tianshan Mountains have been studied.The formation of Indosinian metallic deposits was mainly in connection with a large-scale ductile shear deformation and magmatic activity, which stemmed from the compression and the napping from south to north in the North Tarim basin, some ore deposits (such as vanadic titianomagnetite deposit)might be connection with the early Jurassic within-plate outstretch growing universally in Xijiang.The Yanshanian metallic mineralization was mainly in connection with the magmatic intrusion that originated from the underthrust of the Mongolia-Ehuocike Ocean.This inclusion gives an important impetus to prospecting for metallic deposits in east Tiansahn Mountains. |
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| Keywords: | east Tianshan Mountains Mesozoic era metal mineralization dynamic backgound |
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