新疆西昆仑塔什库尔干地区“帕米尔式”磁铁矿床地质特征及成因分析
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摘要
通过对"帕米尔式"铁矿床的野外地质调查及成矿地质背景、矿床地质特征、矿床地球化学特征、成矿机制和找矿标志进行研究分析,发现该类型铁矿床的铁矿体矿体主要呈层状、似层状、透镜状赋存于下古生界马尔洋组的含铁岩系中,与围岩呈整合接触、互层产出,原生沉积层理清晰,沉积构造特征明显,矿石局部具热液、变质作用改造特征;并具有较为独特的膏铁建造特征,同时稀土元素分析结果表明,"帕米尔式"铁矿床具有海洋化学沉积特征,且与海底中基型火山活动密切相关,为一种新型的铁矿床。
Based on the field geological survey of the Pamir-type iron deposit and the analysis of its metallogenic geological background,geological characteristics,geochemical characteristics,metallogenic mechanism and prospecting criteria,it is found that the orebodies of this type of iron deposit are mainly layered,layered and lenticular in the iron-bearing rock series of the Early Paleozoic Maeryang Formation and are in integrated and interbedded contact with the surrounding rocks.The primary sedimentary bedding of the deposit is clear,the sedimentary structure is obvious,the ore has hydrothermal and metamorphic alteration characteristics in some areas,and has a unique gypsum-iron formation characteristics.At the same time,the analysis of rare earth elements shows that the"Pamir"iron deposit has marine chemical sedimentary characteristics,and is closely related to the submarine medium-basic volcanic activity.It is a new type of iron deposit.
Based on the field geological survey of the Pamir-type iron deposit and the analysis of its metallogenic geological background,geological characteristics,geochemical characteristics,metallogenic mechanism and prospecting criteria,it is found that the orebodies of this type of iron deposit are mainly layered,layered and lenticular in the iron-bearing rock series of the Early Paleozoic Maeryang Formation and are in integrated and interbedded contact with the surrounding rocks.The primary sedimentary bedding of the deposit is clear,the sedimentary structure is obvious,the ore has hydrothermal and metamorphic alteration characteristics in some areas,and has a unique gypsum-iron formation characteristics.At the same time,the analysis of rare earth elements shows that the"Pamir"iron deposit has marine chemical sedimentary characteristics,and is closely related to the submarine medium-basic volcanic activity.It is a new type of iron deposit.
引文
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[31]贾群子.从磁铁矿的标型特征论天湖铁矿的成因[J].西北地质,1991,12(1):19-25.
[2]陈俊魁,燕长海,张旺生,等.新疆塔什库尔干地区磁铁矿床地质特征与找矿方向[J].地质调查与研究,2011,34(3):179-189.
[3]冯昌荣,吴海才,陈勇.新疆塔什库尔干县赞坎铁矿地质特征及成因浅析[J].大地构造与成矿学,2011,35(3):404-409.
[4]陈俊魁,等.新疆西昆仑塔什库尔干地区老并外围矿产地质调查报告[R].2016.
[5]郝延海,等.新疆塔什库尔干县赞坎铁矿调查评价报告[R].2013.
[6]陈登辉,伍跃中,赵晓健.西昆仑塔什库尔干地区石膏磁铁矿特征及其成因分析[C]//中国地质学会2013年学术年会论文摘要集,2013:17-22.
[7]陈曹军,曹新志,张旺生,等.新疆塔什库尔干地区塔阿西—塔吐鲁沟铁矿带控矿因素及找矿方向[J].地质科技情报,2011,30(6):81-89.
[8]陈登辉,伍跃中,李文明,等.西昆仑塔什库尔干地区磁铁矿矿床特征及其成因[J].大地构造与成矿学,2013,37(4):671-684.
[9]陈勇,吴亮,张春江,等.新疆西昆仑塔什库尔干赞坎铁矿矿床地质特征初探[J].山东国土资源,2013,29(2):18-22.
[10]燕长海,陈曹军,曹新志,等.新疆塔什库尔干地区““帕米尔式””铁矿床的发现及其地质意义[J].地质通报,2012,31(4):549-557.
[11]河南省地质调查院.新疆1∶25万塔什库尔干塔吉克自治县幅区调报告[R].2004.
[12]李荣社,等.昆仑山及邻区地质[R].2008.
[13]张岩,顾雪祥,李有核,等.山西原平王家庄条带状磁铁石英岩矿床元素地球化学特征及其地质意义[J].现代地质,2010,24(1):69-79.
[14]沈其韩,宋会侠,赵子然.山东韩旺新太古代条带状铁矿的稀土和微量元素特征[J].地球学报,2009,30(6):693-699.
[15]沈其韩,宋会侠,杨崇辉,等.山西五台山和冀东迁安地区条带状铁矿的岩石化学特征及其地质意义[J].岩石矿物学杂志2011,30(2):161-171.
[16]张士,李国胜.河南义马石千峰组沉积环境探讨[J].地质论评,1989,35(4):374-382,394.
[17]陈述荣,谢家亨,许超南,等.福建龙岩马坑铁矿床成因的探讨[J].地球化学,1985(4):350-357.
[18]BHATIA M R,TAYLOR S R.Trace-element geochemistry and sedimentary provinces:a study from the Tasman Geosyncline,Australia[J].Chemical Geology,1981,33(1/2):115-125.
[19]杜后发,姜勇彪,侯增谦,等.囊谦古近纪盆地砂岩地球化学特征及其对物源和沉积环境的指示作用[J].岩石矿物学杂志,2011,30(4):654-664.
[20]陈建强,周洪瑞,王训练.沉积学及古地理学教程[M].北京:地质出版社,2004:82-86.
[21]祝新友,樊俊昌,邓吉牛.锡铁山矿床中石膏,菱铁矿成因研究与意义[J].矿产与地质,2006,20(32):205-210.
[22]林耀庭,曹善行,熊淑君,等.四川盆地海相三叠系硬石膏和盐卤水的硫同位素组成及意义[J].化工矿产地质,1997,19(3):171-176.
[23]陈锦石,赵瑞,霍卫国,等.海相石膏的硫同位素[J].地质科学,1981(3):273-278.
[24]王曰伦,孙忠和,任富根,等.中国海相火山-沉积成矿理论及相关地质问题[M].北京:地质出版社,1988:1-229.
[25]CLAYPOOL G E,HOLSER W T,KAPLAN I R,et al.The age curves of the sulfur and oxygen isotopes in marine sulfate and their mutual interpretation[J].Chemical Geology,1980,28(3/4):199-260.
[26]陈好寿.我国层控多金属矿床的铅-硫同位素研究[J].矿床地质,1983,2(3):79-87.
[27]陈江峰,杨延龄,李平,等.辽宁鞍山—本溪地区富磁铁矿床硫同位素地质研究[J].地质与勘探,1985,21(1):32-37.
[28]陕亮,郑有业,许荣科,等.硫同位素示踪与热液成矿作用研究[J].地质与资源,2009,18(3):197-203.
[29]HOEFS J.Stable isotope geochemistry(in Minerals and rocks)[M].Springer-Verlag,Berlin,Feder al Republic of Germany,1980:208.
[30]李福东,修泽雷,高栋丞,等.从磁铁矿特征论铜厂铁矿床的成因:前寒武纪一个特殊的铁矿类型[C]//中国地质科学院西安地质矿产研究所文集,1982,5(1):1-16.
[31]贾群子.从磁铁矿的标型特征论天湖铁矿的成因[J].西北地质,1991,12(1):19-25.
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