河南固始地区矽卡岩型铅锌矿地质特征与成因
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摘要
河南固始地区矽卡岩型铅锌矿为小型层控矽卡岩型铅锌矿,矿体赋存于下石炭统花园墙组地层中,主要受地层控制,区内龟(山)—梅(山)断裂带、杨山背斜及北西西向断裂为主要控矿构造。燕山期中酸性小岩体在有利的构造部位多次侵入,与围岩下石炭统花园墙组的石英砂岩、钙硅质石英砂岩、钙硅质粉砂岩的"硅钙面"发生交代作用,从而富集成矿,燕山期中酸性小岩体是矿区主要的物质来源和热源,矿体形成受构造影响显著,矿体规模与构造附近的侵入体规模成正比。矿区内物化探对矿体均有良好的指示。研究成果对于该区进一步扩大找矿远景具有一定的借鉴意义。
The skarn type Pb-Zn deposit in the Gushi area of Henan Province is a small stratabound skarn Pb-Zn deposit. The ore bodies occur in the Lower Carboniferous Huayuanqiang Formation, and are mainly controlled by strata. The Guishan-Meishan fault zone, Yangshan anticline and NW-W-trending faults are the main ore-controlling structures. The Yanshanian small intermediate-acidic rock mass repeatedly intruded into favorable tectonic position, and underwent metasomatism with the surrounding Lower Carboniferous Huayuanqiang Formation quartz sandstone, calcium-siliceous quartz sandstone and calcium-siliceous siltstone, resulting in element enrichment and mineralization. The Yanshanian small intermediate-acidic rock mass is the main material source and heat source in the mining area. The ore bodies are significantly affected by the structure, and the size of the ore bodies is proportional to the size of intrusions near the structure. The physicochemical exploration in the mining area has a good indication to the ore bodies. The research results can be used as a reference to further expand the ore-searching prospect in this area.
The skarn type Pb-Zn deposit in the Gushi area of Henan Province is a small stratabound skarn Pb-Zn deposit. The ore bodies occur in the Lower Carboniferous Huayuanqiang Formation, and are mainly controlled by strata. The Guishan-Meishan fault zone, Yangshan anticline and NW-W-trending faults are the main ore-controlling structures. The Yanshanian small intermediate-acidic rock mass repeatedly intruded into favorable tectonic position, and underwent metasomatism with the surrounding Lower Carboniferous Huayuanqiang Formation quartz sandstone, calcium-siliceous quartz sandstone and calcium-siliceous siltstone, resulting in element enrichment and mineralization. The Yanshanian small intermediate-acidic rock mass is the main material source and heat source in the mining area. The ore bodies are significantly affected by the structure, and the size of the ore bodies is proportional to the size of intrusions near the structure. The physicochemical exploration in the mining area has a good indication to the ore bodies. The research results can be used as a reference to further expand the ore-searching prospect in this area.
引文
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张长青,芮宗瑶,陈毓川,等,2013.中国铅锌矿资源潜力和主要战略接续区[J].中国地质,40(1):248-272.
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陈衍景,李诺,2009.大陆内部浆控高温热液矿床成矿流体性质及其与岛弧区同类矿床的差异[J].岩石学报,25(10):2477-2508.
桂长杰,景山,孙国昌,2015.南京栖霞山铅锌矿区深部找矿重大突破及启示[J].地质学刊,39(1):91-98.
姜玲,吴昌志,王宣青,等,2016.内蒙古库伦旗卧力吐花岗岩下接触带铅锌矿地质特征及找矿启示[J].地质学刊,40(2):331-340.
卢焕章,范宏瑞,倪培,等,2004.流体包裹体[M].北京:科学出版社.
卢欣祥,尉向东,董有,等,2004.小秦岭—熊耳山地区金矿特征与地幔流体[M].北京:地质出版社.
黎广荣,吴昌志,2013.矽卡岩成因模式研究进展:兼论新疆雅满苏铁矿的成因[J].高校地质学报,19(3):425-436.
刘晓,张宇,王楠,等,2015.我国铅锌矿资源现状及其发展对策研究[J].中国矿业(增刊1):6-9.
马宏卫,2008.东秦岭大别山段斑岩型钼(钨、铜)矿床地质特征[J].地质与勘探,44(1):50-54.
唐中刚,2012.大别山燕山期中酸性小岩体钼成矿模型[J].四川地质学报,32(3):299-303.
王录林,梁长明,蔡新民,等,2007.河南省固始县柳林—长湾铅锌矿普查报告[R].河南信阳:河南省地质矿产开发局第三地质调查院.
王夏涛,王昕,王佩刚,2009.河南省卢氏县葫芦山矿区铅矿床地质特征及找矿方向[J].甘肃科技,25(8):43-48.
王思学,吴忠如,万剑威,等,2017.江西上高潢里铅锌矿预查区地质特征与找矿方向[J].地质学刊,41(2):192-199.
杨泽强,2007.河南商城县汤家坪钼矿辉钼矿铼-锇同位素年龄及地质意义[J].矿床地质,26(3):289-295.
杨泽强,2009.北大别山商城汤家坪富钼花岗斑岩体地球化学特征及构造环境[J].地质评论,55(5):43-48.
叶天竺,韦昌山,王玉往,等,2017.勘查区找矿预测理论与方法[M].北京:地质出版社.
张静,陈衍景,舒桂明,等,2002.陕西西南部秦岭梁花岗岩体的矿物成分研究和相关问题讨论[J].中国科学:地球科学,32(2):113-120.
张长青,芮宗瑶,陈毓川,等,2013.中国铅锌矿资源潜力和主要战略接续区[J].中国地质,40(1):248-272.
张长青,吴越,王登红,等,2014.中国铅锌矿床成矿规律概要[J].地质学报,88(12):2252-2268.