矿田构造变形岩相分类与应用效果  

Classification and application effect of structural deformation lithofacies in the orefield

作　　者：吕古贤[1] 张宝林[2,3,4] 胡宝群 王宗永[6] 刘建民 郭涛[1] 申玉科[1] 韦昌山[1] 许德如[7,8] 杨兴科[9] 焦建刚 王翠芝[10] 毕珉峰[11] 马立成[1] Lü Guxian;ZHANG Baolin;HU Baoqun;WANG Zongyong;LIU Jianmin;GUO Tao;SHEN Yuke;WEI Changshan;XU Deru;YANG Xingke;JIAO Jiangang;WANG Cuizhi;BI Minfeng;MA Licheng(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China;Key Laboratory of Mineral Resources,Institute of Geology and Geophysics/Chinese Academy of Sciences,Beijing 100029,China;Institutions of Earth Science,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Earth Science,East China University of Technology,Nanchang 330013,Jiangxi,China;Lanzhou University of Finance and Economics,Lanzhou 730000,Gansu,China;Key Laboratory of Mineralogy and Metallogeny,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,Jiangxi,China;School of Earth Science and Resources,Chang'an University,Xi'an 710064,Shaanxi,China;School of Zijin Mining,Fuzhou University,Fuzhou 350108,Fujian,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]中国科学院矿产资源研究重点实验室/中国科学院地质与地球物理研究所,北京100029 [3]中国科学院地球科学研究院,北京100029 [4]中国科学院大学,北京100049 [5]东华理工大学地球科学学院,江西南昌330013 [6]兰州财经大学,甘肃兰州730000 [7]中国科学院广州地球化学研究所矿物学与成矿学重点实验室,广东广州510640 [8]东华理工大学核资源与环境国家重点实验室,江西南昌330013 [9]长安大学地球科学与资源学院,陕西西安710064 [10]福州大学紫金矿业学院,福建福州350108 [11]中国地质科学院矿产资源研究所,北京100037

出　　处：《地质通报》2020年第11期1669-1680,共12页Geological Bulletin of China

基　　金：原冶金部玲珑金矿科研项目《胶东西北部典型金矿带、金矿田构造控岩控矿与成岩成矿地质特征研究》(编号:L-95-01);国家攻关项目课题《胶东花岗岩-绿岩带金矿地质地球化学特征与找矿方向》(编号:0051-01);国家计委青年科技找矿项目《金矿重点矿化区带隐伏矿床找矿方法和预测》(编号:G947110);国家计委青年科技找矿项目课题《焦家金矿隐伏矿床构造物化探预测和构造物理化学研究》(编号:G947110-2);全国危机矿山接替资源找矿项目《玲珑金矿和新城金矿深部预测的矿田构造研究与示范》(编号:00799095)。

摘　　要：矿田相当于Ⅴ级成矿区带的地质找矿勘查对象,需要研究"构造与建造共生"的地质现象,建立相应的概念和野外观测方法,有别于"沉积构造岩相"、"岩浆岩相"、"变质岩相"、"大地构造相"、"构造岩相"、"构造相"等理论观点。在长期矿田构造和深部外围找矿实践基础上,研究提出"构造变形岩相"的地质概念。构造变形岩相被理解为"显示构造变形的那部分岩相",是喻示受构造影响的那部分(沉积、岩浆和变质地质作用的)岩相,是包含构造变形及建造特征的地质实体,或构造建造形迹。构造变形岩相,是岩石形变和相变密切共生的地质体,既能反映成岩地质环境又包含成岩物理化学条件,是一种适用于开展"构造结合建造"观测和分析的构造岩石单元。依据地质作用类型,划分了4种矿田构造变形岩相:沉积构造变形岩相、岩浆构造变形岩相、变质构造变形岩相和复成构造变形岩相。根据地质亚相,划分了矿田尺度的27类构造变形岩相。建立矿田构造变形岩相的观测和分析方法,不仅推动了构造结合建造的地质调查和研究,而且为矿田构造向矿田地质学的发展奠定了基础。构造变形岩相研究,用1∶1000~1∶50000不同精度,可以调查几十至几百平方千米范围的地质找矿问题,直接服务于已知矿床的深部外围找矿。地表结合中段大比例尺填图,三维刻画矿化岩相带的分布特征,成为圈定靶区的最佳途径。在"就矿找矿"的基础上,探讨了中距离找矿的预测方向--构造变形岩相界面成矿带。The orefield is equivalent to the grade V metallogenic belt of geological exploration object. It is necessary to study the geological phenomenon of " structure and construction association " and establish the corresponding concept and field observation method. It is different from the theoretical viewpoints of " sedimentary tectonic lithofacies", " magmatic lithofacies", " metamorphic lithofacies", " geotectonic facies", " tectonic lithofacies" and " tectonic facies". On the basis of long-term orefield structure and deep peripheral ore prospecting practice,the geological concept of " tectonic deformation lithofacies" is proposed in this paper. Tectonic deformation lithofacies is regarded as " a part of lithofacies showing structural deformation",which indicates the part of lithofacies( sedimentary,magmatic and metamorphic geological processes) affected by structure. It is a geological entity containing structural deformation and formation characteristics or structural formation features. Tectonic deformation lithofacies is a geological body closely associated with rock deformation and phase transformation. It can not only reflect the geological environment of diagenesis but also contain the physical and chemical conditions of diagenesis. It is a kind of structural rock unit suitable for observation and analysis of "structure combined construction". According to the types of geological processes,four types of tectonic deformation lithofacies are recognized: sedimentary structural deformation lithofacies, magmatic tectonic deformation lithofacies, metamorphic structural deformation lithofacies and composite structural deformation lithofacies. According to the geological subfacies,27 types of tectonic deformation lithofacies at the orefield scale are distinguished. The establishment of observation and analysis methods of structural deformation lithofacies in the orefield not only promotes the geological investigation and study of structural combination construction but also lays a foundation for the development of o

关 键 词：构造结合建造 构造变形岩相 构造变形岩相概念 构造变形岩相分类 

分 类 号：P613[天文地球—矿床学]