【摘要】 在大兴安岭北部开展的国土资源大调查项目进一步查明了与成矿密切的地层、岩石的成因机制和构造演化历史,重新厘定了地层、侵入岩填图单元和区域地质构造格架,加强了岩性、构造填图,较客观地反映了地质体的物质组成和结构关系。总结了成矿地质条件和成矿规律,提出了中生代火山岩带和漠河盆地形成受蒙古-鄂霍茨克洋和伊泽纳吉板块联合制约的观点。物、化、遥综合方法的应用,揭示了覆盖层以下及深部的地质信息,为森林覆盖区的地质体划分、构造解析和找矿工作提供了依据,大大提高了填图质量。今后需要进一步加强中生代叠加的金多金属区域成矿地质构造背景和各期次韧性剪切带对于成矿作用的研究。更多还原

【Abstract】 The historical evolution of genetic mechanism and tectonic stratum were defind.The strata,intrusive rocks of the mapping units and the regional geological tectonic framework were redefined.The lithologic and structural mapping were strengthend in progress of the project.The results objectively reflected the material composition and structure relation of geological body.The oreforming conditions and metallogenic regularity were summarized and a new idea of Mesozoic volcanic rock belt and Mohe County basin formed by the Mongolia-Okhotsk ocean and Isawa Nayoshi plate interaction were put forward.Geophysical and geochemical exploration,and remote sensing method were applicated to reveal the geological information covering layer and deepand forest coverage area of geological and prospecting division,which greatly improved the mapping quality.Mesozoic superimposed gold polymetallic metallogenic geological background and study on mineralization in each stage of ductile shear zone are should be strengthened in the furture.更多还原