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地质科学  2008, Vol. 43 Issue (4): 671-684    DOI:
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黑龙江多宝山斑岩铜矿的铜金属来源与富集规律
刘扬1, 程学展1, 王喜臣2, 刘金英3, 王琳1, 王训练1
1. 中国地质大学 北京 100083;
2. 国土资源部中央地质勘查基金管理中心 北京 100045;
3. 北京地质勘查技术工程有限公司 北京 100080
Cu-source and enrichment laws of the Duobaoshan porphyry copper deposit in Heilongjiang province
Liu Yang1, Cheng Xuezhan1, Wang Xichen2, Liu Jinying3, Wang Lin1, Wang Xunlian1
1. China University of Geosciences, Beijing 100083;
2. Management Centre of Central Geological Exploration Fund, Ministry of Land and Resources, Beijing 100045;
3. Beijing Exploration and Technique Engineering Corp.Ltd., Beijing 100080
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摘要 黑龙江多宝山斑岩铜矿位于兴——蒙海西期造山带的东端。该区早古生代的演化受制于兴——蒙洋向东偏北消减于布列亚-佳木斯地块之下,火山弧呈近北西向;晚古生代的演化受制于兴——蒙洋向北西消减于克鲁伦——额尔古纳地块之下,构造线为北东走向。多宝山矿床的金属铜是多来源的,主要矿源层是中奥陶世弧火山岩,次要矿源层是早泥盆世裂谷火山岩。中海西期的中性侵入岩也提供了部分矿源,但它对成矿更主要的贡献是三期脉动式的热液活动成为高背景场中铜元素迁移和富集的主要动力。金属铜在从围岩中汲取出来富集就位于斑岩体周围的同时,在矿区及邻区较大范围内形成铜元素的降低区。多宝山斑岩铜矿的成矿期是中海西期。晚海西-印支期和燕山期的构造-岩浆事件中有其它类型的铜(或铜-多金属)矿床形成,并使多宝山斑岩铜矿遭受改造。
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刘扬
程学展
王喜臣
刘金英
王琳
王训练
关键词斑岩铜矿   金属来源   富集规律   中海西期   兴——蒙造山带   黑龙江多宝山     
Abstract: The Duobaoshan porphyry copper deposit in NW Heilongjiang province is situated in eastern sector of the Xing’anling-Mongolian (for short,Xing-Meng) orogen.The regional tectonic evolution in Early Paleozoic was constrained by east (to north) ward subduction of the Xing-Meng ocean under the Burean-Jiamusi Block,and the Middle Ordovician volcanic arc was NW-striking.The tectonic evolution in Late Paleozoic was controlled by northwestward subduction of the Xing-Meng ocean under the Kerlen-Ergun Block,with the structural line (the Devonian rifting and Permian magmatic arc) being NE-striking.The Cu-source in Duobaoshan area might be of multiple origin,with the main source layer being the Middle Ordovician arc-volcanic rocks,and the minor source one being the Early Devonian rift volcanics.Although the Middle Hercynian granodiorite and granodioritic porphyry might support a part of mineral source,its main contribution to the mineralization could be concluded that the pulsating hydrothermal activities were dynamics for migration and enrichment of copper in a high background.The copper was absorbed from the wallrocks enriched and emplaced in the surrounding positions of the porphyries,and meanwhile some cu-descended positions appeared in the mining and adjacent areas.The metallogenic epoch of the Duobaoshan porphyry copper deposit was Middle Hercynian,when three stages of hydrothermal activity accompanied the Late Carboniferous volcanism,the intrusions of granodiorite and granodioritic porphyry respectively.The copper or copper-polymetallic ores of other types formed in the Late Hercynian-Indosinian and Yanshanian tectono-thermal events,and the Duobaoshan porphyry copper deposit was reformed in these later orogenies.
Key wordsPorphyry copper deposit   Metal sources   Enrichment laws   The Middle Hercynian movement   The Xing’anling-Mongolian orogen   Duobaoshan in Heilongjiang   
收稿日期: 2007-09-10;
引用本文:   
刘扬,程学展,王喜臣等. 2008, 黑龙江多宝山斑岩铜矿的铜金属来源与富集规律. 地质科学, 43(4): 671-684.
Liu Yang,Cheng Xuezhan,Wang Xichen et al. Cu-source and enrichment laws of the Duobaoshan porphyry copper deposit in Heilongjiang province[J]. Chinese Journal of Geology, 2008, 43(4): 671-684.
 
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[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] 黄永卫, 刘扬, 王喜臣, 王琳, 刘金英, 杨继全, 王宝权, 徐秀梅. 黑龙江北部多宝山矿区奥陶系的岩石特征和构造意义[J]. 地质科学, 2009, 44(1): 245-256.
[4] 王喜臣, 王训练, 王琳, 刘金英, 夏斌, 邓军, 徐秀梅. 黑龙江多宝山超大型斑岩铜矿的成矿作用和后期改造[J]. 地质科学, 2007, (1): 124-133.
[5] 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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