河南省舞阳铁矿田构造控矿研究

Study on ore-controlling factors in Wuyang iron ore field in Henan province

从构造角度探讨河南省舞阳铁矿田的控矿因素,包括断裂、褶皱、岩相古地理等方面.研究表明,太古宇太华群是舞阳铁矿田的矿源层,赵案庄组和铁山庙组控制着铁矿床的空间分布,断裂构造、褶皱构造、变质作用影响了矿床的后期改造,干燥炎热的气候、弱排水条件及岩相古地理(古构造面)特征决定了舞阳矿田为一贫铁的大型铁矿田.铁矿床主要分布于赵案庄组和铁山庙组中,位于褶皱轴部(特别是背斜轴部)及倾伏端和断层抬升矿体但未遭受破坏地段.对构造控矿规律的研究,为在舞阳铁矿田范围内寻找深部盲矿体提供了理论依据.

The paper tries to study on ore-controlling factors from the structure angle,including fracture,fold,lithofacies paleogeography etc..The results show that the Archaeozoic eonothem Taihan group is the iron ores source bed of Wuyang iron ore field.Zhaoanzhuang and Tieshanmiao groups control the space distribute of the iron deposits,and the fracture structures,fold structures,metamorphic metallization reform the iron deposits upper.The dry and hot climate,weak evacuating water and lithofacies paleogeography characteristic determine that Wuyang iron ore field is a large-scale poor iron field.The iron deposits mainly distributes in Zhaoanzhuang and Tieshanmiao groups,axis and plunging of folds,the area of iron-bodies which had be uplifted by fractures and not been destroyed.For looking for the deep department blind ore-bodies,the paper gives an important theories basis in Wuyang iron ore field.