长江中下游成矿带深部铁矿找矿的思考
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Consideration on the deep-iron ore deposits prospectingin the middle-lower Yangtze River metallogenic belt
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    摘要:

    长江中下游成矿带是一燕山期岩浆成矿作用为主的陆内成矿带,区内已知铁矿类型主要有产于火山-沉积盆地区与中(基)性火山-侵入作用和偏碱性岩浆侵入作用有关的铁矿床,以及产于隆起区、隆-拗过渡区的与中性岩浆侵入作用有关的铁矿床两大类。本文在区域铁矿成矿背景研究基础上,对区内铁矿类型进行了简要划分,指出影响铁矿找矿突破需要解决的一些矿床学问题。根据区内深部铁矿找矿进展,重点对宁芜、庐枞地区铁矿成矿的异同点以及深部找矿面临的问题进行了讨论,提出本区深部铁矿找矿应在盆地基底或盆地与隆起区过渡部位,寻找“大冶式铜铁矿”、“铜陵式铁铜矿”、斑岩型铜矿都应是下步重点探索的方向。

    Abstract:

    The middle-lower Yangtze metallogenic belt is a intra-continental belt dominated by Yanshannian Mineralization. The iron ore deposits are mainly found either in volcanic-sedimendary basin and related genetically to the intrusion of intermediate to mafic magma and slightly alkaline magma, or locate in the uplift area and the transitional zone of uplift and subside. Based on the investigation of regional metallogenic background, the iron ore types are subdivided and some factors might affect the breakthrough in iron deposits prospecting are also pointed out. According to the progresses in deep-iron deposits prospecting, the similarities and differences in iron mineralization in Ningwu and Luzong volcanic-sedimendary basins, along with some issues might be confronted with in deep-iron ore prospecting are discussed. It is suggested that the deep-iron prospecting in this area should focus on the floor of the sedimentary basin and transitional zone of the basin and uplift areas. Looking for Daye-type Cu-Fe, Tongling-type Fe-Cu and porphyry Cu deposits are the main prospecting targets in the future work.

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杜建国,常丹燕.2011.长江中下游成矿带深部铁矿找矿的思考[J].地质学报,85(5):687-698.
DU Jianguo, Chang Danyan.2011. Consideration on the deep-iron ore deposits prospectingin the middle-lower Yangtze River metallogenic belt[J]. Acta Geologica Sinica,85(5):687-698.

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  • 收稿日期:2011-03-01
  • 最后修改日期:2011-04-06
  • 录用日期:2011-05-16
  • 在线发布日期: 2011-05-16
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