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华北某地燕山期中碱性岩浆岩为一些接触交代型铁矿等的成矿母岩。以往,对岩浆活动的阶段性、岩体产状和其成分的演化以及与成矿的关系等注意不够。近十余年来,特别是无产阶级文化大革命以来,随着该区矿产普查勘探的广泛开展,积累了丰富的岩矿地质资料。综合分析这些新资料,研究其规律性,对于进一步指导找矿有一定意义。
Some Yanshanian alkaline-alkaline magmatic rocks in North China are some of the metallogenic host rocks that contact metasomatism. In the past, the stage of magmatism, the occurrence of rock mass and its composition evolution and the relationship with the metallogeny were not paid enough attention. In the past ten years or so, especially since the Great Proletarian Cultural Revolution, extensive mineral prospecting and mineral exploration have been accumulated in the area, accumulating rich geological data of rock and mineral. A comprehensive analysis of these new materials to study their regularity is of some significance for further guiding prospecting.