四川省石棉县孟获城一带花岗岩体地质特征及铀找矿标志

Geological characteristics and uranium prospecting criteria of granite bodies in Menghuocheng Area,Shimian County,Sichuan Province

研究区位于四川省冕宁县26°方向。大地构造位于康滇地轴北段泸定-米易台拱上,处于安宁河-易门断裂东部。主要表现为晋宁期褶皱隆起与大规模酸性岩浆侵位、澄江期大规模中酸性火山喷发,以及加里东期以来东部坳陷与北西部印支期中酸性岩浆侵位,褶皱、断裂构造发育,区内已分布5处花岗岩型铀矿(化)点。

The research area is located at a 26°direction in Mianning County,Sichuan Province.The geological structure is located on the northern segment of the Kangdian axis,on the Luding Miyi arch,in the eastern part of the Anning River Yimen fault.The main manifestations are the Jinning period fold uplift and large-scale acidic magma emplacement,the Chengjiang period large-scale intermediate acidic volcanic eruption,and the eastern depression and Indosinian intermediate acidic magma emplacement in the northwest since the Caledonian period.Fold and fault structures are developed,and 5 granite type uranium mineralization points have been distributed in the area.