金寨县洪冲地区原生晕地球化学特征及找矿潜力分析
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摘要
结合研究区内的地质背景,系统论述了洪冲地区多金属元素原生晕地球化学特征,圈定综合异常共16处。总体上,异常具有一定的分带性,从南到北大致为:Cu-Mo-Au→Pb-Zn-Ag→Pb-Ag,具有高温到低温的特征,空间分布明显受燕山期岩浆热液活动和构造断裂等因素联合控制,并且Mo、Cu、W、Au等尾晕元素与As、Sn等头晕元素相互叠加,显示出多阶段叠加成矿的特点。其中Hs5、Hs7、Hs14、Hs15综合异常带,具有良好的找矿潜力。
Considering geological setting of the study area,this paper systematically discussed geochemical features of primary halo of a number of metallic elements in the Hongchong area,and circled 16 places of comprehensive anomalies.In general,the anomalies are zoned from south to north roughly as Mo-Au→Pb-ZnAg→Pb-Ag,from high to low temperature,are spatially co-controlled by the Yanshanian magmatic thermal fluid activities and structural fractures,with Mo,Cu,W,Au tail halo elements overlapping with As and Sn head halo elements showing multi-stage superimposition ore-forming characteristics.Of those,Hs5,Hs7,Hs14 and Hs15 comprehensive anomalous zones are prospective for mineral exploration.
Considering geological setting of the study area,this paper systematically discussed geochemical features of primary halo of a number of metallic elements in the Hongchong area,and circled 16 places of comprehensive anomalies.In general,the anomalies are zoned from south to north roughly as Mo-Au→Pb-ZnAg→Pb-Ag,from high to low temperature,are spatially co-controlled by the Yanshanian magmatic thermal fluid activities and structural fractures,with Mo,Cu,W,Au tail halo elements overlapping with As and Sn head halo elements showing multi-stage superimposition ore-forming characteristics.Of those,Hs5,Hs7,Hs14 and Hs15 comprehensive anomalous zones are prospective for mineral exploration.
引文
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[3]陆三明,彭海辉,盛中烈.北淮阳构造带东段铅锌矿找矿前景[J].安徽地质,2002,12(2):114~20.
[4]蔡朝阳,韩秀梅,吴国学,等.统计分析软件S P S S在化探数据处理中的应用[J].矿床地质,2010,29(增刊):635~636.
[5]毕武,唐群英,段新力等.Geo IPAS在化探异常参数统计中的应用[J].西部探矿工程,2011,(9):212~213.
[6]黎彤.大洋地壳和大陆地壳的元素丰度[J].大地构造与成矿学,1984,8(1):19~27.
[7]赵华荣,杜建国,周存亭等.安徽省域及地层区表壳元素丰度特征[J].物探与化探,2015,39(2):292~296.
[8]祁轶宏,李晓晖,霍立新.因子分析与地统计学在化探数据分析中的应用[J].安徽地质,2013,23(2):112~115.
[9]盛中烈,罗铭玖,李良骏.豫西一斑岩钼矿带的基本地质特征及主要成矿控制因素[J].地质学报,1980,5(4):300~309.
[10]张怀东,王波华,郝越进,等.安徽沙坪沟斑岩型钼矿床地质特征及综合找矿信息[J].矿床地质,2012,31(1):41~51.
[11]刘光永,戴茂昌,祁进平,等.福建省紫金山铜金矿床原生晕地球化学特征及深部找矿前景[J].物探与化探,2014,38(3):434~440.
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[13]李惠,张文华,刘宝林,等.中国主要类型金矿床的原生晕轴向分带序列研究及其应用准则[J].地质与勘探,1999,35(1):32~35.