江西“新余式”铁矿地质特征及成因探讨
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摘要
"新余式铁矿是华南重要的铁矿类型之一,也是我国最年轻的硅-铁建造型铁矿之一。本文在归纳总结新余铁矿的含铁岩组、矿体及矿石地质特征的基础上,分析"新余式"铁矿床的成因及成矿模式,认为该矿床是以海底裂谷火山喷发沉积形成,后经低级变质作用改造,属沉积变质型铁矿床。其成矿模式大致可分为火山—沉积成矿、变质变形成矿、改造保存三个阶段。
As one of the youngest BIF iron ore deposits,the Xinyu type iron deposits serve as one of the important iron types in South China. On the basis of generalizing geological characteristics of iron-containing petrofabric and ore body,genesis and ore-forming model of the Xinyu type iron deposits were analysed. Conclusion is that the deposits were Sedimentary-metamorphic iron deposits which formed in submarine rift under the influence of volcanic eruption and sedimentation,then experienced reformation of low-grade metamorphism. It's ore-forming model can be divided into three stages: volcanic sedimentary mineralization,metamorphic mineralization and reformation & conservation.
As one of the youngest BIF iron ore deposits,the Xinyu type iron deposits serve as one of the important iron types in South China. On the basis of generalizing geological characteristics of iron-containing petrofabric and ore body,genesis and ore-forming model of the Xinyu type iron deposits were analysed. Conclusion is that the deposits were Sedimentary-metamorphic iron deposits which formed in submarine rift under the influence of volcanic eruption and sedimentation,then experienced reformation of low-grade metamorphism. It's ore-forming model can be divided into three stages: volcanic sedimentary mineralization,metamorphic mineralization and reformation & conservation.
引文
[1]汤加富,符鹤琴,余志庆.华南晚前寒武纪硅铁建造的层位、类型与形成条件[J].矿床地质,1987,6(1):1-10.
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[6]杨明桂,王昆.江西省地质构造格架及地壳演化[J].江西地质,1994,8(4):239-251.江西地矿厅.江西岩石地层[M].北京:地质出版社,1997:20-90.
[7]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):1-7.
[8]姚琪,等.江西省新余式铁矿田区域成矿控矿地质条件与找矿思路[J].四川有色金属,2012(4):16-25.
[9]沈保丰,等.中国前寒武纪成矿作用[M].北京:地质出版社,2006.1,21-71,275-281.
[10]余志庆,汤家富,符鹤琴."新余式"铁矿地质特征及其成因[J].矿床地质,1989,8(4):1-10.
[11]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):187-195.
[12]姚凤良,孙丰月.矿床学教程[M].北京:地质出版社,2006.
[13]程裕淇,陈毓川,赵一鸣.初论矿床的成矿系列问题[J].地球学报,1979,1(1):32-58.
[14]胡立,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.
[15]王晓颖,等.江西新余式铁矿田变质作用基本特征[J].资源调查与环境,2013,(3):159-164.
[16]周建廷,等.新余铁矿田中的地质系统律和地质全息律[J].华东理工学院学报,2007,(3):211-216.
[2]殷鸿福,吴顺宝,杜远生,等.华南是特提斯多岛洋体系的一部分[J].地球科学,1999,24(1):4-13.
[3]刘鸿允,董榕生,李建林,等.论震旦系划分与对比问题[J].地质科学,1980(4):307-321.
[4]刘鸿允,董榕生,戚中林.震旦系有关问题的讨论[J].地质科学,1982(3):264-273.
[5]戴元裕.包络面在地质勘探中的应用[J].地质与勘探,1981(12):21-24.
[6]杨明桂,王昆.江西省地质构造格架及地壳演化[J].江西地质,1994,8(4):239-251.江西地矿厅.江西岩石地层[M].北京:地质出版社,1997:20-90.
[7]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):1-7.
[8]姚琪,等.江西省新余式铁矿田区域成矿控矿地质条件与找矿思路[J].四川有色金属,2012(4):16-25.
[9]沈保丰,等.中国前寒武纪成矿作用[M].北京:地质出版社,2006.1,21-71,275-281.
[10]余志庆,汤家富,符鹤琴."新余式"铁矿地质特征及其成因[J].矿床地质,1989,8(4):1-10.
[11]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):187-195.
[12]姚凤良,孙丰月.矿床学教程[M].北京:地质出版社,2006.
[13]程裕淇,陈毓川,赵一鸣.初论矿床的成矿系列问题[J].地球学报,1979,1(1):32-58.
[14]胡立,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.
[15]王晓颖,等.江西新余式铁矿田变质作用基本特征[J].资源调查与环境,2013,(3):159-164.
[16]周建廷,等.新余铁矿田中的地质系统律和地质全息律[J].华东理工学院学报,2007,(3):211-216.