Discussion of ore-controlling structural pattern of Hong-Yang-Pei-Liu area in Qianan iron mining area

Ore-controlling structural pattern of Hong-Yang-Pei-Liu area was proposed after analyzing formation occurrence and geophysical characteristics as well as making stratigraphic correlation on the base of maker bed,magnet quartzite.On the whole,the study area shows a structure of synclinorium.Liuheyu-Hongshiya syncline,whose core locates at Shibamutai area,serves as the main part of that synclinorium.Liuheyu main orebody turns to the north west in the deep and gradually becomes thinner.It together with Liuxi orebody constitute a inverted syncline.Qianpeizhuang inverted syncline and Hongshiya inverted syncline serve as secondary folds of that inverted syncline.Faults in the researched area have certain influence on shape integrity and occurrence of ore beds.The establishment of this structural pattern provides a kind of basis for the deep prospecting work in Hong-Yang-Pei-Liu section.