安徽南部桃冲地区铁矿床控矿构造分析
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摘要
通过对桃冲地区典型铁矿床的赋存环境及构造特征的研究和控矿因素分析,认为红花山背斜两翼的铁矿体产于背斜的层间断裂带中的次级褶曲内,受"碳酸盐岩地层+次级褶曲+层间断裂带"三个控矿因素的制约,环滨江岩体的铁矿床受厚层状矽卡岩接触带的制约。综合桃冲地区控矿因素的特点,提出了找矿有利部位。
The Taochong area of the Fanchang metallogenic province in Anhui is located in the middle part of lower-middle Yangtze Fe-Cu-Au poly-metallic metallogenic belt.Based on the analysis of the structural geological characteristics,geology settings of the typical iron ore-deposits and ore-controlling factors in the area,we argue that the distribution of the deposits that occur in the thrust fault and secondary folding in the anticline is controlled by three ore-controlling factors,i.e.,carbonate strata,interstratified fault zone and secondary fold,whereas the Fe deposits that occur around the Binjiang granite were restricted by the thick bedded skarn.Based on analysis of the ore-controlling factors,we predict three favorable metallogenic positions in the Taochong area:the western part of the Honghuanshan anticline;the secondary anticline in the Taochong syncline;the thick-bedded skarn belt and areas of intensive carbonate rock enclaves.
The Taochong area of the Fanchang metallogenic province in Anhui is located in the middle part of lower-middle Yangtze Fe-Cu-Au poly-metallic metallogenic belt.Based on the analysis of the structural geological characteristics,geology settings of the typical iron ore-deposits and ore-controlling factors in the area,we argue that the distribution of the deposits that occur in the thrust fault and secondary folding in the anticline is controlled by three ore-controlling factors,i.e.,carbonate strata,interstratified fault zone and secondary fold,whereas the Fe deposits that occur around the Binjiang granite were restricted by the thick bedded skarn.Based on analysis of the ore-controlling factors,we predict three favorable metallogenic positions in the Taochong area:the western part of the Honghuanshan anticline;the secondary anticline in the Taochong syncline;the thick-bedded skarn belt and areas of intensive carbonate rock enclaves.
引文
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许国建,林新多.1990.安徽长龙山矽卡岩浆型铁矿床成因探讨.地球科学,15(6):649-656.
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常印佛,刘湘培,吴言昌.1991.长江中下游铜铁成矿带.北京:地质出版社:305-311.
储国正,黄许陈,张成火,周捷,吴才来,李东旭,黄华盛,刘文灿.1995.安徽铜陵地区成矿控制因素的探讨.安徽地质,5(1):47-58.
邓吉牛,曲丽莉.1995.长江中下游地区层控矽卡岩型铜矿床控矿地质因素新探.有色金属矿产与勘查,4(5):257-263.
李学军.2006.铜陵地区控矿因素及成矿模式研究.中国地质大学(北京)博士学位论文:27-30.
刘玉成,杨艺华,王永基.2007.大冶铁矿控矿构造研究及深部隐伏矿体定位预测.资源环境与工程,21(增刊):10-16.
吕庆田,杨竹森,严加永,徐文艺.2007.长江中下游成矿带深部成矿潜力、找矿思路与初步尝试.地质学报,81(7):865-881.
孙立广,杨晓勇,王奎仁,张兆峰,杨学明.1998.安徽沙溪斑岩铜矿床的构造岩石屏蔽控矿作用.大地构造与成矿学,22(3):234-241.
唐永成,吴言昌,储国正,邢凤鸣,王永敏,曹奋扬,常印佛.1998.安徽沿江地区铜金多金属矿床地质.北京:地质出版社:32-34.
王瑜,李朗田,苏绍明.2007.鄂东铁矿成矿地质特征与找矿预测.地质与勘探,43(1):17-25.
王玉林,李中樱,王允.2007.繁昌地区富铁矿成矿特征分析.矿业快报,23(10):75-77.
吴学益,卢焕章,吕古贤,王中刚,胡瑞忠,陈文一,朱笑青.2006.黔东南锦屏-天柱地区构造控岩控金特征模拟实验及其力学分析.大地构造与成矿学,30(3):355-368.
许国建,林新多.1990.安徽长龙山矽卡岩浆型铁矿床成因探讨.地球科学,15(6):649-656.
翟裕生,姚书振,林新多,周若,万天丰,金福全,周宗桂.1992.长江中下游铁铜(金)成矿规律.北京:地质出版社:180-194.
周旭信.2002.安徽省顺风山铁矿矿床地质特征及成因分析.地质与勘探,38(8):31-34.
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