| ABSTRACT:Jindouzishan lead-zinc ore district, located in the northern margin accretionary belt of north China plate, is part of south central ore-concentrated area of Inner Mongolia. Low degree of exploration and research, including ore-controlling factors, metallogenic regularity and ore-forming genesis, which severely restricted the exploration and exploitation of the mineral resources.Together with the regional geologic background, this paper discussed the ore-controlling factors, origin of ore-forming materials and metallogenic regularity through structural geology, petrology and geochemistry, etc.The studies show that the field metallogenic environment is similare to oceanic crust subduction type. Granites have high content of sodium, belong to peraluminous, calc-alkaline or alkaline series, the geochemical characteristics are similar to Andean-type active continental margin volcanic arc magma. Diorites have high content of sodium, belong to metaluminous, calc-alkaline or alkaline series, the geochemical characteristics are similar to continental margin intermediate igneous rocks. Gabbroes have high content of sodium, belong to metaluminous, calc-alkaline or alkaline series, the geochemical characteristics are similar to mid ocean ridge basalts.The emplacement and evolution of intermediate-acid plutons are conducive to the richment of mineralization elements. The ore-forming materials have the characteristics of Hercynian period granites and biotite quartz schist, ore-forming is related to the superposition reconstruction of Yanshanian tectonic movement. |
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