河南省舞阳铁矿田构造格架及演化

Tectonic Evolution and Ore-controlling Rule of the Wuyang Iron Deposits in Henan Province

通过对舞阳铁矿田以往地质资料收集整理及野外调查,对该区构造格架特征进行了梳理,研究结果表明:本区位于鲁山背孜-舞阳出山复背斜构造的东段,以NW-SE向褶皱为主,物探重磁资料表明该区存在近南北向构造格架。将该区构造演化特征划分为4个期次,在主构造(第二期NW-SE向褶皱)形成后,第三期构造变形作用(NNE-SN)形成叠加褶皱,在构造的叠加部位,易形成埋深较浅的厚大矿体,对今后找矿工作具有一定的指导意义。

Wuyang iron deposits is located in the eastern part of Lushan Beizhi - Xiping Chushan fold belt and fold axial is NW - SE. There is a series of nearly NS fold in Wuyang iron deposits based on gravitational and magnetic anomalies. Based on past papers and data, according to the ge-ological exploration, this paper summarizes structural framework and discusses tectonic evolution of Wuyang iron deposits, dividing this area into four sub - period. This study shows that structural su- perimposion between the main structure （ NW - SE direction） and the third phase of structural de-formation （NNE - SN direction） is important role in this area, and the iron deposits is formed on structural superimposion. It might play a certain guidance for future prospecting work.