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长江中下游成矿带的探明资源已开采殆尽,深部找矿(-500~-2000 m)应是当务之急。根据勘查与开采资料的综合研究,该区的控矿条件可概括为:岩石圈减薄事件是成矿作用的重要前提,燕山期强烈的构造-岩浆活动是区域成矿的主要关键,地表断裂构造样式是深部构造的响应,前陆盆地沉积建造是成矿作用的优越围岩条件,铁、铜矿床的岩浆岩蚀变特点明显不同,埃达克质岩可视为找铜矿床的间接标志。对于今后深部找矿提出4个思路:①火山岩盆地下部的深部找矿思路;②目标地层的深部找矿思路;③复合类型矿床的深部找矿思路;④接触带“多台阶”的深部找矿思路。
Proved resources in the metallogenic belt in the middle and lower reaches of the Yangtze River have been exhausted. Deep mineral prospecting (-500 ~ -2000 m) should be the top priority. According to the comprehensive study of exploration and mining data, the ore-controlling conditions in this area can be summarized as follows: the lithospheric thinning event is an important prerequisite for metallogenesis, and the strong tectono-magmatic activity of Yanshanian period is the key to mineralization in the area. The tectonic style is the response of deep tectonics. Sedimentary construction of the foreland basin is the superior surrounding rock condition for mineralization. The alteration characteristics of magmatic rocks in iron and copper deposits are obviously different, and the adakitic rocks can be considered as copper deposits Indirect sign. For the future of deep prospecting put forward four ideas: ① volcanic basins in the lower part of the deep prospecting ideas; ② target prospecting prospecting for the deep; ③ complex types of mineral deposits in the deep prospecting ideas; ④ contact with the “multi-step” deep Find mine ideas.