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地质科学  2007, Vol. Issue (1): 124-133    DOI:
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黑龙江多宝山超大型斑岩铜矿的成矿作用和后期改造
王喜臣1, 王训练2, 王琳2, 刘金英3, 夏斌1, 邓军2, 徐秀梅4
1. 中国科学院广州地球化学研究所边缘海地质重点实验室 广州 510640;
2. 中国地质大学 北京 100083;
3. 中国地质调查局沈阳地质矿产研究所 沈阳 110032;
4. 黑龙江省地质勘查局 哈尔滨 151000
METALLOGENY AND REFORMATION OF THE DUOBAOSHAN SUPERLARGE PORPHYRY COPPER DEPOSIT IN HEILONGJIANG
Wang Xichen1, Wang Xunlian2, Wang Lin2, Liu Jinying3, Xia Bin1, Deng Jun2, Xu Xiumei4
1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640;
2. China University of Geosciences, Beijing 100083;
3. Shenyang Institute of Geology and Mineral Resources, China Geological Survey, Shenyang 110032;
4. Heilongjiang Bureau of Geology and Mineral Exploration and Development, Harbin 151000
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摘要 黑龙江多宝山斑岩铜矿的形成与加里东期的火山岛弧密切相关,并因海西期的岩浆活动进一步富集成超大型铜矿,在燕山运动时遭受改造。燕山期变形可分为两期,早期为陆内造山带发育及坍塌,构造线方向北东东,晚期为北东向断裂左行走滑。在此基础上剖析了铜山断裂的活动方式及对矿体的破坏。作为成矿期后的改造断裂,铜山断裂既切断了地质体、矿体和斑岩型矿化蚀变带,同时又起到了保护下盘矿体免遭剥蚀的重要作用。对铜山矿床成矿条件、特别是热液蚀变与铜山断裂“控矿”构造细节的配套研究表明:铜山矿区南部仍然隐伏着含矿蚀变环带的上盘,有矿体存在,为寻找超大型斑岩铜矿提供了可靠的证据。事实证明:深入研究成矿构造控矿规律是行之有效的矿床预测工作基础,细致研究成矿期后构造运动是在已知矿区寻找新矿体的捷径。
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王喜臣
王训练
王琳
刘金英
夏斌
邓军
徐秀梅
关键词斑岩铜矿   燕山期变形   铜山断裂   断失矿体   黑龙江西北部     
Abstract: The Duobaoshan porphyry copper deposit was situated in Nenjiang county, NW Heilongjiang, where outcropped the Ordovician calc-alkaline volcanic suite, indicating the copper mine an arc-related porphyry deposit formed in the Caledonian orogeny. The deposit was reformed by the Yanshanian orogeny, and two episodes of deformation could be distinguished: the early one being rejuvenation of the NEE structure in the Hercynian basement, and the second one being neo-genetic NE-striking shear zone in Early Cretaceous. The Tongshan fracture, separating the deposit into two parts, might be a representative of the Yanshanian deformation, whose early activation was normal faulting related to collapse of the Yanshanides, and the later one was thrusting southwards. As a destructive structure of postmineral period, the Tongshan fracture cut off the wall rocks, ore bodies and porphyritic mineralized alteration belts, and protected the ore bodies in the lower wall to avoid from denudation. The study on deep-seated geology and the analyses of hydrothermal alteration confirmed the existence of blind ore body in southern flank of the Tongshan fracture. To sum up, the deepened study on controlling law of metallogenic tectogenesis was a base of the effective prediction of ore deposit, and the detailed study on ore-controlling structure had a practical meaning and effect on exploration of ore deposit.
Key wordsPorphyry copper deposit   The Yanshanian deformation   The Tongshan fracture   Faulted and buried ore body   Northwestern Heilongjiang   
收稿日期: 2006-01-15;
引用本文:   
王喜臣,王训练,王琳等. 2007, 黑龙江多宝山超大型斑岩铜矿的成矿作用和后期改造. 地质科学, (1): 124-133.
Wang Xichen,Wang Xunlian,Wang Lin et al. METALLOGENY AND REFORMATION OF THE DUOBAOSHAN SUPERLARGE PORPHYRY COPPER DEPOSIT IN HEILONGJIANG[J]. Chinese Journal of Geology, 2007, (1): 124-133.
 
没有本文参考文献
[1] 关维娜1 董连慧2. 新疆西准包古图斑岩型铜钼矿床地质特征及流体包裹体研究[J]. 地质科学, 2010, 45(03): 873-884.
[2] 韩春明1 肖文交1 潘成泽2 李月臣2 颜启明2 曲军峰1 敖松坚1 张继恩1 郭谦谦1 马冲3 万博1. 新疆哈密土屋铜矿床地质和地球化学特征[J]. 地质科学, 2010, 45(02): 537-550.
[3] 刘扬, 程学展, 王喜臣, 刘金英, 王琳, 王训练. 黑龙江多宝山斑岩铜矿的铜金属来源与富集规律[J]. 地质科学, 2008, 43(4): 671-684.
[4] 刘驰, 穆治国, 刘如曦, 黄宝玲. 多宝山斑岩铜矿区水热蚀变矿物的激光显微探针40Ar/39Ar定年[J]. 地质科学, 1995, (4): 329-337.
 
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