摘要
长江中下游成矿带是以燕山期岩浆成矿作用为主的一条陆内成矿带,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-坳过渡区的与中性岩浆侵入作用有关的两大类铁矿床。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"。这些都是下步需要重点探索的方向。
The Middle-Lower Yangtze metallogenic belt is a intra-continental belt dominated by Yanshannian magmatic mineralization.There are two types of iron ore deposits in this area： one occurs mainly in volcanic-sedimentary basin and is genetically related to the intrusion of intermediate to mafic magma and slightly alkaline magma,the other occurs in uplift area and the transitional zone of uplift and subsidence.Based on the investigation of regional metallogenic background,the iron ore types are subdivided.It pointed out that some problems which affect iron deposit prospecting need to solve.According to the progress in deep-iron deposit prospecting,the focus of this study is to discuss similarities and differences of the iron mineralization in the Ningwu and Luzong volcanic-sedimentary basins,and some issues related to deep-iron ore prospecting.It is suggested that the deep-iron prospecting in this area should concentrate on the floor of the sedimentary basin and transitional zone of the basin and uplift areas.Daye-type Cu-Fe deposit and Tongling-type Fe-Cu and porphyry Cu deposits should be the major prospecting targets for upcoming work.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2011年第5期687-698,共12页
Acta Geologica Sinica
基金
国家科技专项项目"深部矿产资源立体探测技术与试验(编号SinoProbe-03)"资助的成果
关键词
深部找矿
铁矿
长江中下游成矿带
思考
deep ore prospecting
iron deposits
Middle-Lower Yangtze metallogenic belt
consideration
