招平断裂带南段山旺矿区金矿地质特征及成矿远景

招平断裂带是胶东地区最重要的金成矿带之一,通过近几年的勘查,其中段和北段陆续发现数个大型、超大型金矿床,而南段勘查活动较少,有找矿突破的矿区更是屈指可数。位于招平断裂带最南端的山旺矿区在山东省地质六队的勘查下取得新进展,探获金矿资源量规模达到中型,探矿深度达到1 342 m,矿体最大埋深接近1 000 m。矿体主要分布于断裂带下盘,呈似层状、脉状产出,矿化类型中浅部以石英脉型为主,深部渐变为蚀变岩型。该文阐述矿床地质特征,总结成矿因素,分析成矿远景,为下一步在招平断裂带南段研究和勘查提供参考。

Geological Features and Metallogenic Prospects of Gold Ores in Shanwang Area in the Southern Part of Zhaoping Fault Zone

The Zhaoping Fault Zone is one of the most important gold metallogenic belts in Jiaodong Area. Through recent years explorations, a number of large and super large-scale gold deposits have been discovered successively in its middle and northern parts. While, its southern part are few, and the areas with prospecting breakthroughs in this part are even rarer. However, through the explorations by No. 6 Geological Team of Shandong Province, new progress has been made recently in Shanwang Prospecting Area, which is at the southernmost end of Zhaoping Fault Zone. The scale of gold resources has reached middle size and prospecting depth 1342 meters, while the maximum burial depth of ore bodies is close to 1000 meters. The ore bodies are quasi-bedded, occurring as veins, and mainly distributed in the footwall of the fault zone. The mineralization type in the shallow and middle parts is mainly quartz vein type, turning gradually into altered rock type in the deep part. In this paper, we analyzed the geological features of the deposit, summarized the metallogenic factors, and discussed the metallogenic prospects, which providing references for further study and exploration in the southern part of Zhaoping Fault Zone.