安徽地质2024，Vol.34Issue(2)：97-100,119,5.
安徽宣城矿集区控矿构造特征及其深部找矿指示意义
Characteristics of ore-controlling structures and their implications for deep ore prospecting in the Xuancheng ore concentration area,Anhui
摘要
Abstract
The Xuancheng ore concentration area is becoming one of the hottest spots in the metallogenic belt along the middle-lower Yangzte River reaches for the discovery of several large-and medium-sized ore deposits such as the Chating porphyry Cu-Au deposit and Changshan hydrothermal type Pb-Zn deposit.Based on detailed field observation and systematical analysis,a NE-trending tectonic framework in the study area has been identified,which includes a major deep fault zone,two depression basins,and three thrust-nappe structural belts composed of multiple overturned complex folds and imbricated thrust sheets moving from SE to NW.According to comprehensive analysis of typical ore deposits,it is concluded that the Jiangnan major deep fault zone and the deep-seated main nappe structure are the primary rock-and ore-controlling structures in the area.Other major ore-controlling and hosting structures are the NE-trending fault and its secondary structures,the limbs and hinge zone of the overturned anticline in the hanging wall of the nappe,interlayer fracture zone,the silicon-calcium interface between the Devonian Wutong Formation and the Carboniferous Huanglong-Chuanshan Formation,and the contact zone between the Late Yanshannian intermediate-acid felsic intrusion and the carbonate rocks.Some suggestions are thus given for further prospecting into the deep part of the area.关键词
宣城矿集区/逆冲推覆构造/控矿构造/铜金多金属矿/深部找矿Key words
Xuancheng ore concentration area/thrust nappe/ore-controlling structure/copper-gold polymetallic ore/deep prospecting分类
天文与地球科学引用本文复制引用
胡召齐,杜建国,谢祖军,陈忠良,马涛,李振伟..安徽宣城矿集区控矿构造特征及其深部找矿指示意义[J].安徽地质,2024,34(2):97-100,119,5.基金项目
中国地质调查局发展研究中心课题"安徽省宣城矿集区深部找矿预测"(编号:DD2019057004)、安徽省公益性地质工作项目"1∶50 000洪镇(H50 E 009012)、安庆市幅(H50 E 009013)深部矿产地质调查"(编号:2023-g-1-3)、国家自然科学基金项目"数据驱动与相似度推理知识嵌入的可扩展岩石图像识别研究"(编号:42372342)联合资助 （编号:DD2019057004）
