江西新余铁矿田构造变形特征研究
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摘要
新余铁矿田位于钦杭成矿带南侧南华加里东造山带,矿床产于南华系火山—沉积浅变质岩系中,是我国最重要的BIF型铁矿之一。通过野外地质调查发现,新余铁矿田矿体形态受褶皱构造控制,总体呈"阶梯状"向下延伸,区内还存在鞘褶皱、杆状构造、拉伸线理和石香肠构造等一系列变形构造。研究基本查明了铁矿体地质特征和区域构造变形特征,初步总结、分析了"红绸舞"式铁矿体形态成因,以期为区域铁矿勘查工作提供指导。
Xinyu iron ore field,located in South China Caledonian orogenic belt on the south side of Qinzhou-Hangzhou metallogenic belt,is one of the most important BIFs-type deposits in China. It is hosted in the Nanhuan System volcanic-sedimentary rocks. The ore bodies of Xinyu iron ore field are controlled by fold structure,showed a "ladder"downward,with a series of deformation structures such as sheath fold,rodding structure,stretching lineation and boudinage formation founded by geological survey. This study identified the geological features of iron orebody and regional structure deformation characteristics,preliminary summarise and analysed the genesis of the "red ribbon"style iron orebodies sharp,in order to provide guidance for regional iron ore exploration.
Xinyu iron ore field,located in South China Caledonian orogenic belt on the south side of Qinzhou-Hangzhou metallogenic belt,is one of the most important BIFs-type deposits in China. It is hosted in the Nanhuan System volcanic-sedimentary rocks. The ore bodies of Xinyu iron ore field are controlled by fold structure,showed a "ladder"downward,with a series of deformation structures such as sheath fold,rodding structure,stretching lineation and boudinage formation founded by geological survey. This study identified the geological features of iron orebody and regional structure deformation characteristics,preliminary summarise and analysed the genesis of the "red ribbon"style iron orebodies sharp,in order to provide guidance for regional iron ore exploration.
引文
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[2]徐德明,蔺志永,骆学全,等.钦一杭成矿带主要金属矿床成矿系列[J].地学前缘,2015,22(2):7-24.
[3]沈滔,张政.江西新余铁矿地质地球化学特征及成矿机制探讨[J].江西科学,2015,33(4):546-552.
[4]曾书明,周建廷,王学平,等.江西新余铁矿田铁矿成矿地质特征与成因分析[J].地质与勘探,2011,47(2):187-196.
[5]肖光荣,姚琪.江西省新余式铁矿中深部铁矿勘查探讨[J].地学前缘,2013,20(4):1-7.
[6]胡立,曾超,周敏娟,等.赣中铁矿田“新余式”铁矿成矿模式探讨[J].现代矿业,2013(3):70-72.
[7]陈正乐,张青,韩凤彬,等.江西赣中铁矿“红绸带”式铁矿体形态成因及其找矿预测[J].大地构造与成矿学,2016,40(2):213-223.
[8]许温复,王仁根.赣中新余式变质铁矿勘查过程中的小构造研究田[J].江西地质科技动态,1958:18-29.
[9]戴元裕.江西省新余太平山铁矿区叠加褶皱构造解析并论恢复复杂褶皱系的包络面的意义[J].地质找矿论丛,1986,1(2):13-21.
[10]曾书明,周建廷,王学平,等.新余铁矿田铁矿成矿地质特征与成因分析[J].东华理工大学学报,2010,3(3):231-240.