安徽青阳百丈岩钨钼矿床成矿背景与成矿模式
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摘要
本文在总结前人研究成果的基础上,分析了安徽青阳百丈岩钨钼矿床的成矿地质背景、控矿地质条件、成岩成矿时代和矿床成因,建立了矿床成矿模式,并进一步探讨了矿床的成矿地球动力学背景。百丈岩钨钼矿床的成岩物质以壳源为主,成矿是燕山晚期的陆壳重熔型花岗岩侵入的结果,燕山期两次大规模的岩浆活动是成矿的关键因素,对应晚侏罗世花岗闪长岩、早白垩世二长花岗岩及碱性花岗岩,分别形成于陆内挤压加厚和拆沉减薄两种构造背景。百丈岩钨钼矿形成于早白垩世拆沉减薄环境,表明在东部燕山期构造环境发生转变。百丈岩钨钼矿在晚侏罗世挤压加厚转换为早白垩世拆沉减薄的背景中成矿,与东部燕山期成矿大爆发吻合。
Based on the analysis of the previous study results of the Baizhangyan Tungsten—molybdenum Deposit in Qingyang,Anhui Province,the paper has analyzed its ore-forming setting,ore-controlling conditions, epoch of diagenesis and metallogeny,and ore genesis,then built up its metallogenetic model. The paper also has further discussed the geodynamics setting of the deposit. Diagenetic material of the Baizhangyan tungsten—molybdenum ore deposit mainly derived from crustal materials,and ore-forming of the deposit was caused by the invasion of the late Yanshanian continental crust remelted granite. The twice extensive magma activities of Yanshannian were the key factors to ore precipitation,which corresponded granodiorite in late Jurassic epoch and adamellite and alkaline granite in early Cretaceous. They each formed under the two different backgrounds of compression thickening and delamination thinning. The Baizhangyan tungsten—molybdenum ore deposit formed in the environment of delamination thinning of lithosphere in early Cretaceous,which indicates ore-forming in the setting from compression thickening in late Jurassic epoch to delamination thinning in early Cretaceous during the tectonic turning period ,and it fits in well with metallogenetic explosion in the eastern part of China in Yanshanian.
Based on the analysis of the previous study results of the Baizhangyan Tungsten—molybdenum Deposit in Qingyang,Anhui Province,the paper has analyzed its ore-forming setting,ore-controlling conditions, epoch of diagenesis and metallogeny,and ore genesis,then built up its metallogenetic model. The paper also has further discussed the geodynamics setting of the deposit. Diagenetic material of the Baizhangyan tungsten—molybdenum ore deposit mainly derived from crustal materials,and ore-forming of the deposit was caused by the invasion of the late Yanshanian continental crust remelted granite. The twice extensive magma activities of Yanshannian were the key factors to ore precipitation,which corresponded granodiorite in late Jurassic epoch and adamellite and alkaline granite in early Cretaceous. They each formed under the two different backgrounds of compression thickening and delamination thinning. The Baizhangyan tungsten—molybdenum ore deposit formed in the environment of delamination thinning of lithosphere in early Cretaceous,which indicates ore-forming in the setting from compression thickening in late Jurassic epoch to delamination thinning in early Cretaceous during the tectonic turning period ,and it fits in well with metallogenetic explosion in the eastern part of China in Yanshanian.
引文
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邓晋福,莫宣学,赵海玲,罗照华,赵国春,戴圣潜.1999.中国东部燕山期岩石圈—软流圈系统大灾变与成矿环境.矿床地质,18(4):309～315.
邓晋福,吴宗絮.2001.下扬子克拉通岩石圈减薄事件与长江中下游Cu—Fe成矿带.安徽地质,11(2):86～91.
杜建国,戴圣潜,莫宣学,邓晋福,许卫.2003.安徽沿江地区燕山期火成岩成岩成矿地质背景.地学前缘,10(4):551～560.
丁宁,周涛发,杜建国,许卫.2011.安徽省青阳县百丈岩钨钼矿床成矿模式.矿物学报,(增刊):16～17.
毛景文,王志良.2000.中国东部大规模成矿时限及其动力学背景的初步探讨.矿床地质,19(4):289～296.
瞿泓滢,裴荣富,李进文,王永磊.2010.安徽铜陵凤凰山石英二长岩和花岗闪长岩锆石SHRIMP U-Pb年龄及其地质意义.吉林大学学报(地球科学版),40(3):581～590.
瞿泓滢,裴荣富,王浩琳,李进文,王永磊,梅燕雄.2011.安徽铜陵凤凰山铜矿床成矿流体特征研究.地质论评,57(1):50～62.
邱瑞龙.1998.九华山花岗岩岩浆分异特征及岩石成因.岩石矿物学杂志,17(4):308～315.
秦燕,王登红,李延河,王克友,吴礼彬,梅玉萍.2010.安徽青阳百丈岩钨钼矿床成岩成矿年龄测定及地质意义.地学前缘,17(2):170～177.
宋国学,秦克张,李光明.2010.长江中下游池州地区矽卡岩—斑岩型W—Mo矿床流体包裹体与H、O、S同位素研究.岩石学报,26(9):2768～2782.
陶奎元,毛建仁,刑光福,杨祝良,赵宇.1999.中国东部燕山期火山—岩浆大爆发.矿床地质,18(4):316～322.
吴福元,孙得有.1999.中国东部中生代岩浆作用与岩石圈减薄.长春科技大学学报,29(4):314～318.
吴福元,葛文春,孙德友,郭春丽.2003.中国东部岩石圈减薄研究中的几个问题.地学前缘,10(3):51～60.
王方正,肖龙.1998.大地构造火成岩岩石学研究.地学前缘,5(4):245～250.
王克友.2008.青阳百丈岩钨钼矿床中斑岩型(浸染状)钼矿体的发现及其找矿意义.安徽地质,18(3):185～188.
谢桂青,毛景文,李瑞玲,赵财胜.2006.鄂东南地区Cu—Au—Mo—(W)矿床的成矿时代及其成矿地球动力学背景探讨:辉钼矿Re-Os同位素年龄.矿床地质,25(1):43～52.
邢凤鸣,徐祥.1993.皖南中生代花岗岩类Nd,Sr,Pb同位素特点.安徽地质,3(1):35～40.
薛怀民,汪应庚,马芳,汪诚,王德恩,左延龙.2009.皖南太平—黄山复合岩体的SHRIMP年代学:由钙碱性向碱性转变对扬子克拉通东南部中生代岩石圈减薄时间的约束.中国科学(D辑),39(7):979～993.
徐克勤,涂光炽.1984.花岗岩地质与成矿关系.南京:江苏科学技术出版社,1～219.
袁峰,周涛发,岳书仓,朱光,侯明金.2003.江南隆起带皖赣相邻区燕山期岩浆岩稀土对比研究.中国稀土学报,21(5):600～603.
袁峰,周涛发,范裕,岳书仓,朱光,侯明金.2005.皖赣相邻区燕山期花岗岩类构造背景及其意义.合肥工业大学学报(自然科学版),28(9):1130～1134.
袁峰,周涛发,范裕,岳书仓,朱光,侯明金.2006.江南隆起带皖赣相邻区燕山期岩浆岩Nd-Sr同位素特征.地质科学,41(1):133～142.
张德全,徐洪林.1997.安徽青九复式岩体的地质学和地球化学.地学研究,第29～30号:213～229.
朱光,刘国生.2000.皖南江南陆内造山带的基本特征与中生代造山过程.大地构造与成矿学,24(2):103～111.
周涛发,袁峰,侯明金,杜建国,范裕,朱光,岳书仓.2003.江南隆起带东段皖赣相邻区的成矿条件与资源潜力对比研究.自然科学进展,13(10):1036～1041.
周涛发,袁峰,侯明金,杜建国,范裕,朱光,岳书仓.2004.江南隆起带东段皖赣相邻区燕山期花岗岩类的成因及形成的地球动力学背景.矿物岩石,24(3):65～71.
赵文广,孙乘云,狄勤松,蔡晓兵.2007.安徽省青阳县百丈岩钨钼矿地质特征、成因及找矿方向分析.安徽地质,17(2):90～94.
Barbarin B.1999.A review of the relationships between granitoid types,their origins and their geodynamic environments.Lithos,46:605.
Castro A.1991.H-type(Hybrid)granitoids:a proposed revision of thegranite-type classification and nomenclature.Earth ScienceReviews,31:237～253.
Chen J,Foland K A and Xing F.1991.Magmatism along the southernmargin of the Yangtze block:Precambrian collision of the Yangtzeand Cathysia blocks of China.Geology,19:815～818.
Song G X,Qin K Z,Li G M,Li X H,Li J X,Liu T B and Chang Z S.2012.Zircon SMS U-Pb and molybden ite Re-Os ages ofBaizhangyan W—Mo deposit Middle—Lower Yangtze Valley.Constraints on tectonic setting of magmatism and mineralization.International Geology Review,69:853～868.
邓晋福,莫宣学,赵海玲,吴宗絮,罗照华.1996.中国大陆根—柱构造——大陆动力学的钥匙.北京:地质出版社,1～110.
邓晋福,莫宣学,赵海玲,罗照华,赵国春,戴圣潜.1999.中国东部燕山期岩石圈—软流圈系统大灾变与成矿环境.矿床地质,18(4):309～315.
邓晋福,吴宗絮.2001.下扬子克拉通岩石圈减薄事件与长江中下游Cu—Fe成矿带.安徽地质,11(2):86～91.
杜建国,戴圣潜,莫宣学,邓晋福,许卫.2003.安徽沿江地区燕山期火成岩成岩成矿地质背景.地学前缘,10(4):551～560.
丁宁,周涛发,杜建国,许卫.2011.安徽省青阳县百丈岩钨钼矿床成矿模式.矿物学报,(增刊):16～17.
毛景文,王志良.2000.中国东部大规模成矿时限及其动力学背景的初步探讨.矿床地质,19(4):289～296.
瞿泓滢,裴荣富,李进文,王永磊.2010.安徽铜陵凤凰山石英二长岩和花岗闪长岩锆石SHRIMP U-Pb年龄及其地质意义.吉林大学学报(地球科学版),40(3):581～590.
瞿泓滢,裴荣富,王浩琳,李进文,王永磊,梅燕雄.2011.安徽铜陵凤凰山铜矿床成矿流体特征研究.地质论评,57(1):50～62.
邱瑞龙.1998.九华山花岗岩岩浆分异特征及岩石成因.岩石矿物学杂志,17(4):308～315.
秦燕,王登红,李延河,王克友,吴礼彬,梅玉萍.2010.安徽青阳百丈岩钨钼矿床成岩成矿年龄测定及地质意义.地学前缘,17(2):170～177.
宋国学,秦克张,李光明.2010.长江中下游池州地区矽卡岩—斑岩型W—Mo矿床流体包裹体与H、O、S同位素研究.岩石学报,26(9):2768～2782.
陶奎元,毛建仁,刑光福,杨祝良,赵宇.1999.中国东部燕山期火山—岩浆大爆发.矿床地质,18(4):316～322.
吴福元,孙得有.1999.中国东部中生代岩浆作用与岩石圈减薄.长春科技大学学报,29(4):314～318.
吴福元,葛文春,孙德友,郭春丽.2003.中国东部岩石圈减薄研究中的几个问题.地学前缘,10(3):51～60.
王方正,肖龙.1998.大地构造火成岩岩石学研究.地学前缘,5(4):245～250.
王克友.2008.青阳百丈岩钨钼矿床中斑岩型(浸染状)钼矿体的发现及其找矿意义.安徽地质,18(3):185～188.
谢桂青,毛景文,李瑞玲,赵财胜.2006.鄂东南地区Cu—Au—Mo—(W)矿床的成矿时代及其成矿地球动力学背景探讨:辉钼矿Re-Os同位素年龄.矿床地质,25(1):43～52.
邢凤鸣,徐祥.1993.皖南中生代花岗岩类Nd,Sr,Pb同位素特点.安徽地质,3(1):35～40.
薛怀民,汪应庚,马芳,汪诚,王德恩,左延龙.2009.皖南太平—黄山复合岩体的SHRIMP年代学:由钙碱性向碱性转变对扬子克拉通东南部中生代岩石圈减薄时间的约束.中国科学(D辑),39(7):979～993.
徐克勤,涂光炽.1984.花岗岩地质与成矿关系.南京:江苏科学技术出版社,1～219.
袁峰,周涛发,岳书仓,朱光,侯明金.2003.江南隆起带皖赣相邻区燕山期岩浆岩稀土对比研究.中国稀土学报,21(5):600～603.
袁峰,周涛发,范裕,岳书仓,朱光,侯明金.2005.皖赣相邻区燕山期花岗岩类构造背景及其意义.合肥工业大学学报(自然科学版),28(9):1130～1134.
袁峰,周涛发,范裕,岳书仓,朱光,侯明金.2006.江南隆起带皖赣相邻区燕山期岩浆岩Nd-Sr同位素特征.地质科学,41(1):133～142.
张德全,徐洪林.1997.安徽青九复式岩体的地质学和地球化学.地学研究,第29～30号:213～229.
朱光,刘国生.2000.皖南江南陆内造山带的基本特征与中生代造山过程.大地构造与成矿学,24(2):103～111.
周涛发,袁峰,侯明金,杜建国,范裕,朱光,岳书仓.2003.江南隆起带东段皖赣相邻区的成矿条件与资源潜力对比研究.自然科学进展,13(10):1036～1041.
周涛发,袁峰,侯明金,杜建国,范裕,朱光,岳书仓.2004.江南隆起带东段皖赣相邻区燕山期花岗岩类的成因及形成的地球动力学背景.矿物岩石,24(3):65～71.
赵文广,孙乘云,狄勤松,蔡晓兵.2007.安徽省青阳县百丈岩钨钼矿地质特征、成因及找矿方向分析.安徽地质,17(2):90～94.
Barbarin B.1999.A review of the relationships between granitoid types,their origins and their geodynamic environments.Lithos,46:605.
Castro A.1991.H-type(Hybrid)granitoids:a proposed revision of thegranite-type classification and nomenclature.Earth ScienceReviews,31:237～253.
Chen J,Foland K A and Xing F.1991.Magmatism along the southernmargin of the Yangtze block:Precambrian collision of the Yangtzeand Cathysia blocks of China.Geology,19:815～818.
Song G X,Qin K Z,Li G M,Li X H,Li J X,Liu T B and Chang Z S.2012.Zircon SMS U-Pb and molybden ite Re-Os ages ofBaizhangyan W—Mo deposit Middle—Lower Yangtze Valley.Constraints on tectonic setting of magmatism and mineralization.International Geology Review,69:853～868.
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