Geophysical and Geochemical Characteristics and Prospecting Potential of the Guozhuang Area,Juxian County,Shandong Province北大核心CSCD

山东莒县果庄地区位于华北陆块鲁西隆起汞丹山断隆(次级隆起)构造单元，区内构造复杂，岩浆活动强烈，区域成矿条件优越。为实现区内找矿突破，在区内进行了系统的1：5万水系沉积物测量和1：1万激电中梯测量。本次研究在成矿地质背景研究的基础上，对莒县果庄地区物化探异常特征进行综合分析，结果表明区内水系沉积物测量金异常富集中心明显，且异常高值出露位置与土壤剖面测量金异常高值出露位置基本吻合；激电异常总体分布与断裂构造和沂水岩群分布相一致；激电测深具有明显的高极化异常体；土壤剖面测量金异常与激电中梯异常位置基本对应。据此认为莒县果庄地区具有较好的找金矿潜力，岩体接触带及断裂构造发育带是下一步找矿重点方向。

Geophysical and geochemical characteristics and prospecting potential of the Guozhuang area, Juxian County, Shandong Province

The Guozhuang area of Juxian County is located in the tectonic unit of the Gongdanshan fault uplift (secondary uplift) of the Luxi uplift of North China Block. This area has complex structures and strong magmatic activities, which possesses favorable regional metallogenic conditions. In order to achieve prospecting breakthrough, systematic 1:50, 000 stream sediment survey and 1:10,000 IP intermediate gradient survey were conducted in this area. This work comprehensively analyzed the geophysical and geochemical anomalies in the Guozhuang area on the basis of metallogenic geological background. The stream sediment survey indicates that this area displays obvious enrichment center of gold anomalies, and the outcropping of the abnormally high anomalies agrees well with that from measured soil profiles. The general distribution of IP anomalies is consistent with fault structures and the Yishui rock group. High-polarization in IP sounding detects obvious anomalies. The location of gold anomalies from soil profiles corresponds to that of IP intermediate gradient anomalies. The Guozhuang area of Juxian County is inferred to have large gold prospecting potential, and the contact zone of rock mass and the fault structures is expected to be the future key prospecting target.