| 黑龙江省嫩江-黑河地区古、中生代洋陆转换的岩浆岩记录及相关的矿床类型 |
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| 引用本文： | 张昱,杜兵盈,张铁安,王文东,刘宇崴,李成禄,高洪岩,刘明伟,李强.黑龙江省嫩江-黑河地区古、中生代洋陆转换的岩浆岩记录及相关的矿床类型[J].地球科学,2020,45(7):2360-2378. |
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| 作者姓名： | 张昱 杜兵盈 张铁安 王文东 刘宇崴 李成禄 高洪岩 刘明伟 李强 |
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| 作者单位： | 1.黑龙江省地质矿产局, 黑龙江哈尔滨 150036 |
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| 基金项目： | 中国地质调查局项目12120113053300中国地质调查局项目12120114033501中国地质调查局项目DD20190370 |
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| 摘 要： | 黑龙江省嫩江-黑河地区显生宙岩浆活动强烈，发育一系列大、中型矿床，为了了解研究区古、中生代的洋陆过程及其成矿背景，系统总结了研究区近年来岩浆岩和矿床学研究中取得的成果，梳理出洋内弧前弧岩石组合的埃达克质岩石、高镁岩石和TTG花岗岩等，并结合火山-沉积建造特征，探讨研究区的洋陆转换及相关的矿床类型代表的成矿事件.研究区古生代发育早寒武世、晚寒武世、中奥陶世、早志留世的高镁岩石和早奥陶世、中奥陶世、晚泥盆世的埃达克质岩石，一直处于嫩江-黑河洋的俯冲环境，在晚石炭世-二叠纪转为晚造山-后造山阶段，成矿作用以奥陶纪最为强烈，且与洋内弧前弧岩石组合的高镁岩石、埃达克质岩石密切相关，出现俯冲造弧阶段的斑岩与浅成低温热液成矿系统，需要进一步加强可能的VMS型矿床、造山型金矿等找矿勘查工作.研究区中生代发育与蒙古-鄂霍茨克大洋板片南向俯冲作用有关的中三叠世、早侏罗世埃达克质岩石和晚三叠世的镁质岩石及早-中侏罗世TTG花岗岩，而早白垩世晚期的弧火山岩和产出的一系列大、中型金矿床可能与古太平洋板块俯冲-后撤有关.
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| 关 键 词： | 黑龙江省 嫩江-黑河地区 古生代 中生代 洋陆转换 矿床类型 矿床学 |
| 收稿时间： | 2020-03-10 |
Record of Magmatic Rocks and Related Type of Deposit for Paleozoic and Mesozoic Ocean-Land Transition in Nenjiang-Heihe Area,Heilongjiang Province |
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| Abstract: | The Phanerozoic magmatic activity was strongly in Nenjiang-Heihe area of Heilongjiang Province, a series of large and medium-sized deposits were developed, in order to understand the Paleozoic and Mesozoic ocean-land transition processes and their metallogenic background in the study area, the achievements in magmatic rocks and ore deposits in recent years were systematically summarized, the adakitic rocks, high magnesium rocks and TTG granite, from the interoceanic fore - arc rock assemblage were discussed, in combination with volcanic-sedimentary characteristics, the metallogenic events represented by the ocean-land transition and related deposit types in the study area were discussed. High magnesium rocks of Early Cambrian, Late Cambrian, Middle Ordovician and Early Silurian and adakitic rocks of Early Ordovician, Middle Ordovician and Late Devonian developed in the Paleozoic, in the subduction environment of Nenjiang-Heihe ocean, during the Late Carboniferous-Permian period, it changed to late orogenic-post-orogenic stage, the mineralization was most intensely in Ordovician and was closely related to adakitic rocks and high magnesium rocks from interoceanic fore-arc rock assemblage, the porphyry in the subduction arc-forming stage and the shallow cryogenic hydrothermal metallogenic system appear, and the possible VMS type of deposits, orogenic gold deposits and other ore-prospecting work need to be further strengthened. The Mesozoic development in the study area was related to the southern subduction of the Mongol-Okhorsk oceanic plate in the Middle Triassic, Early Jurassic adakitic rocks and Late Triassic magnesite rocks and Early-middle Jurassic TTG granite, the late Early cretaceous arc volcanic rocks and a series of large and medium-sized gold deposits may be related to the subduction-retreat of the ancient Pacific plate. |
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