The basement structural deformation, evolution and its control action on deposit distribution in Luzong volcanic basin and its adjacent area in Anhui Province, China

In this article, the tectonic background of formation and the characters of the two important unconformity interface and two kinds of faults in Luzong volcanic basin are analyzed. The deformation characteristics of the two stage overlapping-folds and the stratigraphic sequence and spatially distributing feature in Indosinian folding basement in Luzong volcanic basin and adjacent areas are discussed. And it introduced the expression and controversy of Jinzi Movement and Nanxiang Movement in Indosinian in this areas. Based on the unconformable contact between Dongmaanshan Formation and Nanlinghu Formation in the area of Chaohu and Hexian recently, the existence of the Jinzi Movement is further confirmed, which discussed the kinematic base and possible dynamic conditions formed by the deformation of the two stage Indosinian folds. Through the reunderstanding of metallogenic background, the mineralizing characteristics and prospecting direction of the three types deposits are summarized ( volcanic-related iron deposits, neutral-acid intrusive rocks-related porphyry copper and lead-zinc deposits, contact metasomatic type and stratabound iron type of the iron and copper deposits). It emphasized the Yanshanic structural especially faulted structure control on magma intrusion and volcanic action and related mineralization. And it discussed the rock-controlling and ore-controlling structure conditions of typical deposits.