【摘要】 宣城矿集区因近年发现了茶亭斑岩型铜金矿、长山热液型铅锌矿等大-中型矿产地而成为长江中下游成矿带较热门矿集区之一。通过详细的野外调查和系统分析，本文厘定了研究区北东向构造格架为一条深大断裂带、两个坳陷盆地、三条逆冲推覆构造带，其中推覆构造带由多个自南东向北西运动的倒转复式褶皱和叠瓦状逆冲岩席组成。根据典型矿床控矿构造解析，明确了江南深大断裂和深部主推覆构造是区内一级控岩控矿构造，北东向断裂带及其次级构造、推覆体上盘倒转褶皱转折端和翼部、层间破碎带、五通组与黄龙-船山组的“硅钙面”、燕山晚期中酸性侵入岩与碳酸盐岩的接触带等为区内重要的控矿、容矿构造，并据此提出了该区下一步深部找矿方向。更多还原

【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.更多还原