河南嵩县康达萤石矿Sm-Nd同位素年龄及地质意义
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摘要
河南嵩县康达萤石矿位于华北地台南缘,为秦岭多金属和非金属成矿带嵩县西南部车村萤石矿集区。为确定该矿床的成矿时代,为矿床成因研究和找矿勘探提供依据,采用MC-ICP-MS对矿床主成矿期的萤石进行了Sm-Nd同位素测年。结果表明,萤石样品的等时线年龄为(123±9. 1) Ma,表明矿床形成于早白垩世,该年龄与合峪复式岩体的末次侵位年龄(127±14)Ma接近;萤石的εNd(t)为-15. 9,与合峪岩体的εNd(t)为-17. 4～-11. 2也相近,暗示矿床与合峪岩体的密切成因联系,并与这一时期区域上发生的大规模成矿时代及燕山期岩浆侵入事件相一致。
The Kangda fluorite deposit located in the Checun fluorite ore concentration area,southwestern Songxian county,southern margin of the North China Craton. It is in the Qinling polymetallic and non-metallic metallogenic belt. In order to determine the formation age of the deposit and provide the basis for the study of the genesis and prospecting of the deposit,Sm-Nd isotope dating of fluorite from the main metallogenic stage of the deposit was carried out by MC-ICP-MS.The Sm-Nd isotope of fluorite yield the isochron age of( 123±9. 1) Ma,indicating that the main ore-forming age was the Early Cretaceous. The age is close to the last emplacement age of the Heyu complex( 127±14) Ma; The εNd( t) value(-15. 9) of fluorite is similar to the εNd( t) value(-17. 4～-11. 2) of the Heyu granite,suggesting that the mineralization is closely related to the Heyu granite,possibly linked with with the large-scale metallogensis and magmatism during the Yanshanian.
The Kangda fluorite deposit located in the Checun fluorite ore concentration area,southwestern Songxian county,southern margin of the North China Craton. It is in the Qinling polymetallic and non-metallic metallogenic belt. In order to determine the formation age of the deposit and provide the basis for the study of the genesis and prospecting of the deposit,Sm-Nd isotope dating of fluorite from the main metallogenic stage of the deposit was carried out by MC-ICP-MS.The Sm-Nd isotope of fluorite yield the isochron age of( 123±9. 1) Ma,indicating that the main ore-forming age was the Early Cretaceous. The age is close to the last emplacement age of the Heyu complex( 127±14) Ma; The εNd( t) value(-15. 9) of fluorite is similar to the εNd( t) value(-17. 4～-11. 2) of the Heyu granite,suggesting that the mineralization is closely related to the Heyu granite,possibly linked with with the large-scale metallogensis and magmatism during the Yanshanian.
引文
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高昕宇,赵太平,原振雷,周艳艳,高剑峰.2010.华北陆块南缘中生代合峪花岗岩的地球化学特征与成因.岩石学报,26(12):3485-3506
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黄建国,李虎杰,李文杰,董磊.2012.贵州戈塘金矿萤石微量元素特征及钐-钕测年.地球科学进展,27(10):1087-1093
李诺,陈衍景,孙亚莉,胡海珠,李晶,张辉,倪智勇.2009.河南鱼池岭钼矿床辉钼矿铼-锇同位素年龄及地质意义.岩石学报,25(2):413-421
李文勇,夏斌,路文芬.2004.东秦岭的地球物理、构造分带特征及演化.地质与勘探,40(1):36-40
李永峰,毛景文,胡华斌,郭保健,白凤军.2005.东秦岭钼矿类型、特征、成矿时代及其地球动力学背景.矿床地质,24(3):292-304
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刘协鲁,王义天,胡乔青,魏然,王瑞廷,温深文,陈明寿,杨光华.2014.陕西省凤太矿集区柴蚂金矿床碳酸盐矿物的Sm-Nd同位素测年及意义.岩石学报,30(1):271-280
聂凤军,江思宏,刘妍,林源贤.2002.阿拉善东七一山大型萤石矿床萤石钐-钕同位素年龄及地质意义.矿床地质,21(1):10-15
庞绪成,董文超,倪开放,李文明,司媛媛.2018.河南洛宁县范庄银矿原生晕地球化学特征及深部成矿预测.矿物岩石地球化学通报,37(3):495-501
庞绪成,李文明,刘纪峰,司媛媛.2019.河南省嵩县陈楼萤石矿流体包裹体特征及其地质意义.河南理工大学学报(自然科学版),38(1):45-53
彭建堂,符亚洲,袁顺达,沈能平,张东亮.2006.热液矿床中含钙矿物的Sm-Nd同位素定年.地质论评,52(5):662-667
唐克非,李建威.2009.河南嵩县前河金矿矿化特征、成矿时代与矿床成因.矿物学报,29(S1):136-137
王银喜,杨杰东,陶仙聪,李惠民.1988.化石、矿物和岩石样品的Sm-Nd同位素实验方法研究及其应用.南京大学学报(自然科学版),24(2):297-308
肖鸿,魏俊浩,谭俊,李欢,贾盼盼,石文杰,杜保峰.2012.小秦岭地区早白垩世酸性侵入岩地球化学特征及构造环境.地质科技情报,31(3):39-48
谢桂青,毛景文,李瑞玲,叶会寿,张毅星,万渝生,李厚民,高建京,郑熔芬.2007.东秦岭宝丰盆地大营组火山岩SHRIMP定年及其意义.岩石学报,23(10):2387-2396
姚军明,赵太平,李晶,孙亚莉,原振雷,陈伟,韩军.2009.河南祁雨沟金成矿系统辉钼矿Re-Os年龄和锆石U-Pb年龄及Hf同位素地球化学.岩石学报,25(2):374-384
叶会寿,毛景文,徐林刚,高建京,谢桂清,李向前,何春芬.2008.豫西太山庙铝质A型花岗岩SHRIMP锆石U-Pb年龄及其地球化学特征.地质论评,54(5):699-711
衣龙升,范宏瑞,翟明国,李月湘,马汉峰,田建吉,修晓茜.2016.新疆白杨河铍铀矿床萤石Sm-Nd和沥青铀矿U-Pb年代学及其地质意义.岩石学报,32(7):2099-2110
张元厚,张世红,韩以贵,张慧军.2006.华熊地块马超营断裂走滑特征及演化.吉林大学学报(地球科学版),36(2):169-176,193
张宗清,伍家善,叶笑江.1991.阜平群下部太古代变质岩石的REE、Rb-Sr和Sm-Nd年龄及其意义.地球化学,(2):118-127
赵玉.2016.河南栾川马丢萤石矿地质地球化学特征及成因探讨.硕士学位论文.北京:中国地质大学(北京),1-64
Cherniak D J.1998.REE diffusion in calcite.Earth and Planetary Science Letters,160(3-4):273-287
Chesley J T,Halliday A N,Kyser T K,Spry P G.1994.Direct dating of Mississippi Valley-type mineralization:Use of Sm-Nd in fluorite.E-conomic Geology,89(5):1192-1199
Chesley J T,Halliday A N,Scrivener R C.1991.Samarium-neodymium direct dating of fluorite mineralization.Science,252(5008):949-951
Wang Y X,Yang J D,Chen J,Zhang K J,Rao W B.2007.The Sr and Nd isotopic variations of the Chinese Loess Plateau during the past 7Ma:Implications for the East Asian winter monsoon and source areas of loess.Palaeogeography,Palaeoclimatology,Palaeoecology,249(3-4):351-361
毕诗健,李建威.2011.华北南缘小秦岭金矿集中区中生代成矿作用及其与克拉通破坏的关系.矿物学报,31(S1):1-3
高昕宇,赵太平,原振雷,周艳艳,高剑峰.2010.华北陆块南缘中生代合峪花岗岩的地球化学特征与成因.岩石学报,26(12):3485-3506
郭波,朱赖民,李犇,弓虎军,王建其.2009.华北陆块南缘华山和合峪花岗岩岩体锆石U-Pb年龄、Hf同位素组成与成岩动力学背景.岩石学报,25(2):265-281
河南省地质矿产勘查开发局第二地质矿产调查院.2018.河南省嵩县萤石矿控矿因素及成矿机理研究
黄建国,李虎杰,李文杰,董磊.2012.贵州戈塘金矿萤石微量元素特征及钐-钕测年.地球科学进展,27(10):1087-1093
李诺,陈衍景,孙亚莉,胡海珠,李晶,张辉,倪智勇.2009.河南鱼池岭钼矿床辉钼矿铼-锇同位素年龄及地质意义.岩石学报,25(2):413-421
李文勇,夏斌,路文芬.2004.东秦岭的地球物理、构造分带特征及演化.地质与勘探,40(1):36-40
李永峰,毛景文,胡华斌,郭保健,白凤军.2005.东秦岭钼矿类型、特征、成矿时代及其地球动力学背景.矿床地质,24(3):292-304
李志昌.1987.Nd同位素在研究岩石矿石成因方面的应用.地质科技情报,6(1):123-135
刘红樱,胡受奚,周顺之.1998.豫西马超营断裂带的控岩控矿作用研究.矿床地质,17(1):70-81
刘协鲁,王义天,胡乔青,魏然,王瑞廷,温深文,陈明寿,杨光华.2014.陕西省凤太矿集区柴蚂金矿床碳酸盐矿物的Sm-Nd同位素测年及意义.岩石学报,30(1):271-280
聂凤军,江思宏,刘妍,林源贤.2002.阿拉善东七一山大型萤石矿床萤石钐-钕同位素年龄及地质意义.矿床地质,21(1):10-15
庞绪成,董文超,倪开放,李文明,司媛媛.2018.河南洛宁县范庄银矿原生晕地球化学特征及深部成矿预测.矿物岩石地球化学通报,37(3):495-501
庞绪成,李文明,刘纪峰,司媛媛.2019.河南省嵩县陈楼萤石矿流体包裹体特征及其地质意义.河南理工大学学报(自然科学版),38(1):45-53
彭建堂,符亚洲,袁顺达,沈能平,张东亮.2006.热液矿床中含钙矿物的Sm-Nd同位素定年.地质论评,52(5):662-667
唐克非,李建威.2009.河南嵩县前河金矿矿化特征、成矿时代与矿床成因.矿物学报,29(S1):136-137
王银喜,杨杰东,陶仙聪,李惠民.1988.化石、矿物和岩石样品的Sm-Nd同位素实验方法研究及其应用.南京大学学报(自然科学版),24(2):297-308
肖鸿,魏俊浩,谭俊,李欢,贾盼盼,石文杰,杜保峰.2012.小秦岭地区早白垩世酸性侵入岩地球化学特征及构造环境.地质科技情报,31(3):39-48
谢桂青,毛景文,李瑞玲,叶会寿,张毅星,万渝生,李厚民,高建京,郑熔芬.2007.东秦岭宝丰盆地大营组火山岩SHRIMP定年及其意义.岩石学报,23(10):2387-2396
姚军明,赵太平,李晶,孙亚莉,原振雷,陈伟,韩军.2009.河南祁雨沟金成矿系统辉钼矿Re-Os年龄和锆石U-Pb年龄及Hf同位素地球化学.岩石学报,25(2):374-384
叶会寿,毛景文,徐林刚,高建京,谢桂清,李向前,何春芬.2008.豫西太山庙铝质A型花岗岩SHRIMP锆石U-Pb年龄及其地球化学特征.地质论评,54(5):699-711
衣龙升,范宏瑞,翟明国,李月湘,马汉峰,田建吉,修晓茜.2016.新疆白杨河铍铀矿床萤石Sm-Nd和沥青铀矿U-Pb年代学及其地质意义.岩石学报,32(7):2099-2110
张元厚,张世红,韩以贵,张慧军.2006.华熊地块马超营断裂走滑特征及演化.吉林大学学报(地球科学版),36(2):169-176,193
张宗清,伍家善,叶笑江.1991.阜平群下部太古代变质岩石的REE、Rb-Sr和Sm-Nd年龄及其意义.地球化学,(2):118-127
赵玉.2016.河南栾川马丢萤石矿地质地球化学特征及成因探讨.硕士学位论文.北京:中国地质大学(北京),1-64