九龙区铅锌矿带成矿地质特征及找矿前景分析

Discussion on the Mineralization Geological Features and Metallogenetic Model of Jiulong Pb-Zn Deposit Belt

九龙区铅锌成矿带位于银山铜铅锌多金属矿田九区铜硫矿带的北部、北山铅锌矿带的南端。在大地构造位置上,处于江南台隆与钱塘坳陷衔接部位,乐德中生代火山盆地的东北缘,赣东北深断裂带的西北侧。根据实地考察,通过对该成矿带成矿的构造背景及区域成矿地质、地球物理、地球化学特征等方面的研究,认为燕山早期运动所导致的岩体侵位为区内成矿提供了热源,区内断裂构造的发育为成矿提供了良好的构造条件,双桥山地层,在成矿作用过程中提供了一定的物源,在该矿区的深边部及其外围有着巨大的找矿潜力。

The lead-zinc ore belt of Jiulong district is located in the north of polymetallic ore field, with copper mineralization belt in Yinshan and the south of Beishan＇s lead-zinc ore belt. It＇s tectonic position lies in the joint of Tailong and the depression of Qiantang＇s link, the northeastern margin of the Mesozonic volcanic basin and the northwestern of deep fault zone in northeastern of Jiangxi province Researched on the spot, the metallogenetic construct setting,region metallogenetical characteristics and geological characteristics have been reveal in this paper, the authors regarded that the magmatite invadeing, which caused by early Yanshan Movement, supplied the heat source during the course of metallogenetic in this area, those faults, which developed in the region, offered good structure condition for mineralization, Shuangqiaoshan stratum provide material source in the process of metallization. The metalization mainly took place at Yanshan period.