开阳磷矿洋水矿区构造特征分析

Analysis on structural characteristics in Yangshui mining area of Kaiyang phosphate Mine, Central Guizhou

开阳磷矿洋水矿区是闻名全国的富磷矿产出基地,该区构造复杂,增加了磷矿的勘查的难度。发育的底板滑脱断层和顶板逆冲断层以及它们所围限的断夹块构成了该区典型的双重构造,构造分带特征明显,越靠近底板滑脱断层,褶皱作用和岩石变形越强烈。其中,底板滑脱断层为规模最大,为现今磷矿找矿的构造边界。

Yangshui mining area of Kaiyang phosphate Mine in central Guizhou is one of the important production bases of high-quality phosphate rock in China. The complexity of structures increases the difficulty of phosphorite exploration. The floor detachment fault, roof thrust fault and fault block constitute a typical duplex with obvious zoning features. The more close to the floor detachment fault, the stronger folding and deformation of the rock are. The floor detachment fault is the structural boundary of phosphorite prospecting due to the largest scale.