摘要
吉林省永吉县头道沟地区出露许多与头道沟岩组相伴产出的镁铁—超镁铁质岩,鉴于其处于长春-延吉构造带附近而受到业内关注,但由于缺少高精度年代学资料,制约了对区域大地构造的深入研究。本文采用锆石U-Pb(LA-ICP-MS)方法,对镁铁—超镁铁质岩进行了年代学研究。变质辉绿岩年龄为270±5 Ma,变质橄榄岩中捕获锆石最小年龄为297 Ma,考虑岩石组合及二者紧密相伴产出,认为二者均形成于中二叠世。镁铁—超镁铁质岩中捕获的锆石记录了华北克拉通及其北缘多次重要的构造热事件。其中,变辉绿岩中获得446±6 Ma的年龄与变质橄榄岩中获得的不一致线下交点434±240 Ma年龄共同对应了华北克拉通北缘早古生代的重要构造岩浆热事件;大量的1.8~2.4Ga年龄对应古元古代辽吉造山带热事件;1377 Ma、1542 Ma与蓟县系建造时代对应;869~997 Ma与青白口系建造时代对应;在变质辉绿岩中还存在众多3.0~3.2Ga锆石年龄。分析上述年龄结构及龙岗陆块北缘古生代地质体分布特征,推测研究区深部可能存在古老的变质基底,同时也表明研究区出露的镁铁—超镁铁质岩形成于陆内构造环境,而非蛇绿岩的组成成分,这对深化区域大地构造研究具有重要意义。
A large amount of mafic-ultramafic rocks,which are accompanied with the Toudaogou Formation,occurs in the Toudaogou area,Yongji County,Jilin Province.They have received wide attention from geological industry due to its location near to the Changchun-Yanji tectonic belt.But lacking the highprecision chronology data has greatly restricted the in-depth study of regional tectonic.In this paper,we conducted chronological study for the mafic-ultramafic rocks using zircon U-Pb dating(LA-ICP-MS)method.The study yielded an age of 270±5Ma for metadiabase and a minimum age of 297Ma for zircons captured in the metamorphic peridotite.Considering the rock association and their close occurrence,we thought they were both formed in Middle Permian.The zircons captured in the mafic-ultramafic rocks record many important tectonic heat events occurring in the North China Craton and its northern margin.Among them,an age of 446±6 Ma yielded for the metadiabase might indicate the age of magmatic event,and the age of 434±240 Ma for metamorphic peridotite may reflect an important Early Paleozoic tectonomagmatic thermal event in the northern margin of North China Craton.A large number of 1.8~2.4Ga ages corresponds to the Paleoproterozoic thermal events in Liao-Ji orogenic belt,while 1377 Ma and 1542Ma corresponds to the era of Jixianian.869~997 Ma corresponds to the formation era of the Qingbaikouan.In addition,zircons with age of 3.0~3.2Ga occur commonly in metadiabase.Based on analysis of the age structure and distribution characteristics of the Paleozoic geological bodies in the northern margin of Longgang landmass,this study suggests that there may exist an old metamorphic basement in the study area,and that the exposed mafic-ultramafic rocks formed in the intracontinental tectonic environment,rather than the components of ophiolite.This understanding is of great significance in deepening the research on regional tectonic.
引文
Cao Huahua,Xu Wenliang,Pei Fuping,Guo Pengyuan,Wang Feng.2012.Permian tectonic evolution of the eastern section of the northern margian of the North China Plate:Constraints from zircon U-Pb geochronology and geochemistry of the volcanic rocks.Acta Petrologica Sinica,28(09):2733~2750(in Chinese with English abstract).
Geng Yuansheng,Lu Songnian.2014.Advances in the study of Precambrian chronostratigraphy in China:A review.Earth Science Frontiers,21(2):102~118(in Chinese with English abstract).
Jia Dacheng.1988.A preliminary study on the tectonic framework of palaeo-plate in the central part of Jilin Province.Jilin Geology,(3):58~63(in Chinese with English abstract).
Jian Pin,Liu Dunyi,Zhang Qi,Zhang Fuqin,Si Yuruo,Si Guanghai,Zhang Luqiao,Tao Hua.2003.SHRIMP Dating of ophiolite and leucocratic rocks within ophiolite.Earth Science Frontiers,10(4):439~456(in Chinese with English abstract).
Li Chengdong,Zhang Fuqin,Miao Laicheng,Du Yulin,Hua Yanqiu,Xu Yawen,Kang Shumei.2009.Zircon SHRIMP U-Pb geochronology of the Zhangsangou Formation complex in the northeastern margin of North China block,and its geological significance.Acta Geologica Sinica,83(5):642~650(in Chinese with English abstract).
Li Dongjing et al.1997.Stratigraphy(lithostratic)of Jilin Province.Wuhan:China University of Geosciences Press,82~84(in Chinese with English abstract).
Li Huaikun,Geng Jianzhen,Hao Shuang,Zhang Yongqing,Li Huimin.2009.Study on Determination of zircon U-Pb isotopic age with Laser ablation multicollector inductively coupled plasma mass spectrometry(LA-MC-ICPMS).Journal of Minerals,29(S1):600~601(in Chinese with English abstract).
Li Huaikun,Lu Songnian,Li Huimin,Sun Lixin,Xiang Zhenqun,Geng Jianzheng,Zhou Hongyin.2009.Zircon and beddeleyite U-Pb precision dating of basic rock sills intruding Xiamaling Formation,North China.Geological Bulletin of China,28(10):1396~1404(in Chinese with English abstract).
Li Jinyi,Qu Junfeng,Zhang Jin,et al.2013.New developments on the reconstruction of Phanerozoic geological history and research of metallogenic geological settings of the northern China orogenic redion.Geological Bulletin of China,(2/3):207~219(in Chinese with English abstract).
Li Pengwu,Gao Rui,Guan Ye,Li Qiusheng.2006.Palaeomagnetic constrains on the final closure time of Solonker-Linxi Suture.Journal of Jilin University:Earth Sciences Edition,36(5):744~758(in Chinese with English abstract).
Li Zhuang,Cheng Bin,Wang Jialin.2016.Geochronological framework and geodynamic implications of mafic magmatism in the Liaodong Peninsula and adjacent regions,North China craton.Acta Geologica Sinica,(English Edition),90(1):138~153.
Liu Chang’an,Shan Jicai.1979.Discussion on the main characteristics of Paleao platic tectonic of Mongolia Okhotsk sea orogeny.Journal of Changchun College of Geology,(2):1~12(in Chinese with English abstract).
Liu Chaohui,Liu Fulai.2015.The Mesoproterozoic rifting in the North China craton:A case study for magmatism and sedimentation of the Zhaertai-Bayan Obo-Huade rift zone.Acta Petrologica Sinica,31(10):3107~3128(in Chinese with English abstract).
Liu Dunyi,Wan Yusheng,Wu Jiashan,Wilde S A,Dong Chunyan,Zhou Hongyin,Yin Xiaoyan.2007.Archean crustal evolution and the oldest rocks in the North China craton.Geological Bulletin of China,26(9):1131~1138(in Chinese with English abstract).
Liu Fulai,Liu Pinghua,Wang Fang,Liu Chaohui,Cai Jia.2015.Progresses and overviews of voluminous meta-sedimentary series within the Paleoproterozoic Jiao-Liao-Ji orogenic/mobile belt,North China Craton.Acta Petrologica Sinica,31(10):2816~2846(in Chinese with English abstract).
Liu Xun,Li Tindong,Geng Shufang,et al.2012.Geotectonic division of China and some related problems.Geological Bulletin of China,31(7):2014~1034(in Chinese with English abstract).
Liu Y S,Gao S,Hu Z C,et al.2010.Continental and oceanic crust recycling-induced melt-peridotite interactions in the TransNorth China orogen:U-Pb dating,Hf isotopes and trace elements in zircons of mantle xenoliths.Journal of Petrology,51:537~571.
Liu Y S,Hu Z C,Gao S,et al.2008.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard.Chemical Geology,257:34~43.
Lu Ruofei,Nv Gang,Si Zhenchun,Li Xiaoshuai,Li Nawei,Jia Dachen.2010.Discussion on protolith composition and formation evironment of Hulan group’s Toudaogou Formation in central region of Jilin Province.Jilin Geology,29(2):10~13(in Chinese with English abstract).
Lu Songnian,Li Huaikun,Xiang Zhenqun.2010.Advances in the study of Mesoproterozoic geochronology in China:a review.Geology in China,37(4):1003~1013(in Chinese with English abstract).
Lu Xiaoping,Wu Fuyuan,Lin Jingqian,Sun Deyou,Zhang Yanbin,Guo Chunli.2004.Geochronological successions of the Early Precambrian granitic magmatism in southern Liaodong peninsula and its constraints on tectonic evolution of the Northchina craton.Chinese Journal of Geology,39(1):123~138(in Chinese with English abstract).
Ludwig.2003.K.R.ISOPLOT 3.00:A Geochronological Toolkit for Microsoft Excel.Berkeley:Berkeley Geochronology Center,California.
Meng En,Liu Fulai,Liu Pinghua,Liu Chaohui,Shi Jianrong,Kong Qingbo,Lian Tao.2013.Depositional ages and tectonic implications for South Liaohe Group from Kuandian area in northeastern Liaodong Peninsula,Northeast China.Acta Petrologica Sinica,29(7):2465~2480(in Chinese with English abstract).
Meng Fanxing.1992.The characteristics of zone of progressive metamorphism in argillaceous rocks in Hulan group and its geological significance in the central part of Jilin Provinces.Jilin Geology,(3):60~70(in Chinese with English abstract).
Pan Guitang,Xiao Qinghui,Lu Songnian,Den Jinfu,Feng Yumin,Zhang Kexin,Zhang Zhangzhiyong,Wang Fangguo,Xing Guangfu,Hao Guojie,Feng Yanfang.2009.Subdivision of tectonic units in China.Geology in China,36(1):1~28(in Chinese with English abstract).
Pei Fupin,Wang Zhiwei,Cao Huahua,Xu Wenliang,Wang Feng.2014.Petrogenesis of the Early Paleozoic tonalite in the central Jilin Province:Evidence from zircon U-Pb chronology and geochemistry.Acta Petrologica Sinica,30(7):2009~2019(in Chinese with English abstract).
Peng Yujing,Wang Zhanfu.1997.The ophiolite of Jilin Province.Jilin Geology,16(1):17~29(in Chinese with English abstract).
Qiu Dianming,Zhang Xingzhou,Zhang Chunyan.2004,Geochemical characteristics of Qinglongcun Group in Wolong area,Yanbian.Journal of Jilin University:Earth Sciences Edition,34(4):509~516(in Chinese with English abstract).
Shen Qihan,Geng Yuansheng,Song Biao,Wan Yusheng.2005.New information from the surface outcrops and deep crust of Archean rocks of the North China and Yangtze blocks,and Qinling-Dabie orogenic belt.Acta Geologica Sinica,79(5):616~627(in Chinese with English abstract).
Song Yunhong,Yang Fengchao,Yan Guolei,Wei Minghui,Shi Shaoshan.2016.SHRIMP U-Pb ages and Hf isotopic compositions of Paleoproterozoic granites from the eastern part of Liaoming Province and their tectoic significance.Acta Geologica Sinica,90(10):2620~2636(in Chinese with English abstract).
Sun Deyou,Wu Fuyuan,Gao Shan,Lu Xiaopin.2005,Confirmation of two episodes of A-type granite emplacement during Late Triassic and Early Jurassic in the central Jilin Province,and their constraints on the structural pattern of Eastern Jilin Heilongjiang area China.Earth Science Frontiers,12(2):263~275(in Chinese with English abstract).
Wan Yusheng,Liu Dunyi,Yin Xiaoyan,Wilde S A,Xie Liewen,Yang Yueheng,Zhou Hongyin,Wu Jiashan.2007.SHRIMPgeochronology and Hf isotope composition of zircons from theTiejiashan granite and supracrustal rocks in the Anshan area Liaoning Province.Acta Petrologica Sinica,23(2):241~252(in Chinese with English abstract).
Wan Yusheng,Song Biao,Yang Chun,Liu Dunyi.2005.Zircon SHRIMP U-Pb geochronology of Archaean rocks from the Fushun-Qingyuan area,Liaoning Province and its geological significance.Acta Geologica Sinica,79(1):78~87(in Chinese with English abstract).
Wang Liwu,Wang Ying,Yang Jing,Wu Guoqing,Li Guoyan,Sheng Li.2007.Pre-Mesozoic basement provenance tracing of the Songliao Basin by means of detrital zircon SHRIMPchronology.Earth Science Frontiers,14(4):151~158(in Chinese with English abstract).
Wang Zhiwei,Pei Fupin,Cao Huahua,Wang Zijing,Xu Wenliang.2013.Earliest Carboniferous magmatic event in the eastern section of the northern margin of the North China plate and its tectonic implications-Evidence from rock association and zircon U-Pb geochronology.Geological Bulletin of China,32(2/3):279~286(in Chinese with English abstract).
Wu Yuanbao,Zheng Yongfei.2004.Zircon genetic mineralogy research and interpretation of U-Pb age restriction.Chinese Science Bulletin,49(16):1589~1604(in Chinese with English abstract).
Xi Aihua,Ren Hongmao,Zhang Baofu,Wang Yongxiang,Shi Shubao,Zhi Xuejun.2003.Isotopic chronology of the Hulan group and its geological significance in the central Jilin Province.Journal of Jilin University:Earth Sciences Edition,33(1):15~18(in Chinese with English abstract).
Xiao Lingling,Liu Fulai.2015.Precambrian metamorphic history of the metamorphic complexes in the Trans-North China orogen,North China craton.Acta Petrologica Sinica,31(10):3012~3044(in Chinese with English abstract).
Xu Gongyu.1991.Geological description of Jilin Province-New understanding of tectonics and crustal evolution in Jilin Province.Science Bulletin of Science and Technology,(7):46~48(in Chinese with English abstract).
Yin Xiaoyan,Wan Yusheng,Liu Dunyi,Wilde S A,Zhou Hongyin,Wu Jiashan.2006.Formation time of supracrustal rocks in Tiejiashan granite of the Anshan area:evidence from detrital zircon SHRIMP dating.Acta Petrologica et Mineralogica,25(4):283~286(in Chinese with English abstract).
Zhang Chunyan,Zhang Xingzhou,Qiu Dianming.2007.Zircon U-Pb isotopic ages of amphibolite of Qinglongcun Group in Yanbian area and its geological significance.Journal of Jilin University:Earth Sciences Edition,37(4):672~677(in Chinese with English abstract).
Zhang Guangliang,Wu Fuyuan.2005.Geochronology significances of the post-orogenic mafic-ultramafic rocks in Hongqiling area of Jilin Province,NE China.Seismology and Geology,27(4):600~608(in Chinese with English abstract).
Zhao Chunjin,et al.1996.Tectonic Framework and Crust Evolution of Eastern Jilin and Heilongjiang Provinces.Shenyang:Liaoming University Press(in Chinese with English abstract).
Zhao Lei,Zhu Xiyan,Zhai Mingguo.2016.Major Advances in the study of the Precambrian geology and metallogenesis of the North China craton:A review.Acta Geologica Sinica(English Edition),90(4):1122~1155.
Zhou Hongyin,Liu Dunyi,Wan Yusheng,Dong Chunyan.2008.3.3~3.1Ga magmatism in the Dongshan complex,Anshan area,Liaoning,China:Evidence from zircon SHRIMP U-Pb dating.Geological Bulletin of China,27(12):2122~2126(in Chinese with English abstract).
曹花花,许文良,裴福萍,郭鹏远,王枫.2012.华北板块北缘东段二叠纪的构造属性:来自火山岩锆石U-Pb年代学与地球化学的制约.岩石学报,28(09):2733~2750.
耿元生,陆松年.2014.中国前寒武纪地层年代学研究的进展和相关问题.地学前缘,21(2):102~118.
贾大成.1988.吉林省中部地区古板块构造格局的探讨.吉林地质,(3):58~63.
简平,刘敦一,张旗,张福勤,石玉若,施光海,张履桥,陶华.2003.蛇绿岩及蛇绿岩中浅色岩的SHRIMP U-Pb测年.地学前缘,10(4):439~456.
李承东,张福勤,苗来成,杜玉林,花艳秋,许雅雯,康淑梅.2009.华北陆块东北缘张三沟岩组SHRIMP锆石U-Pb年代学研究及其地质意义.地质学报,83(5):642~650.
李东津,等.1997.吉林省岩石地层.武汉:中国地质大学出版社,82~84.
李怀坤,耿建珍,郝爽,张永清,李惠民.2009.用激光烧蚀多接收器等离子体质谱仪(LA-MC-ICPMS)测定锆石U-Pb同位素年龄的研究.矿物学报,29(S1):600~601.
李怀坤,陆松年,李惠民,孙立新,相振群,耿建珍,周红英.2009.侵入下马岭组的基性岩床的锆石和斜锆石U-Pb精确定年---对华北中元古界地层划分方案的制约.地质通报,28(10):1396~1404.
李锦轶,曲军峰,张进,等.2013.中国北方造山区显生宙地质历史重建与成矿地质背景研究进展.地质通报,32(2/3):207~219.
李朋武,高锐,管烨,李秋生.2006.内蒙古中部索伦-林西缝合带封闭时代的古地磁分析.吉林大学学报:地球科学版,36(5):744~758.
刘长安,单际彩.1979.试谈蒙古-鄂霍茨克海带古板块构造的基本特征.长春地质学院学报,(2):1~12.
刘超辉,刘福来.2015.华北克拉通中元古代裂解事件:以渣尔泰-白云鄂博-化德裂谷带岩浆与沉积作用研究为例.岩石学报,31(10):3107~3128.
刘敦一,万渝生,伍家善,Wilde S A,董春艳,周红英,殷小艳.2007.华北克拉通太古宙地壳演化和最古老的岩石.地质通报,26(9):1131~1138.
刘福来,刘平华,王舫,刘超辉,蔡佳.2015.胶-辽-吉古元古代造山/活动带巨量变沉积岩系的研究进展.岩石学报,31(10):2816~2846.
刘训,李廷栋,耿树芳,等.2012.中国大地构造区划及若干问题.地质通报,31(7):1024~1034.
鲁若飞,吕刚,施占春,李晓帅,李娜伟,贾大成.2010.吉中地区呼兰群头道沟组原岩组成及形成环境的探讨.吉林地质,29(2):10~13.
陆松年,李怀坤,相振群.2010.中国中元古代同位素地质年代学研究进展述评.中国地质,37(4):1003~1013.
路孝平,吴福元,林景仟,孙德有,张艳斌,郭春丽.2004.辽东半岛南部早前寒武纪花岗质岩浆作用的年代学格架.地质科学,39(1):123~138.
孟恩,刘福来,刘平华,刘超辉,施建荣,孔庆波,廉涛.2013.辽东半岛东北部宽甸地区南辽河群沉积时限的确定及其构造意义.岩石学报,29(07):2465~2480.
孟繁兴.1992.吉林中部呼兰群泥质岩递进变质特征及其地质意义.吉林地质,(3):60~70.
潘桂棠,肖庆辉,陆松年,邓晋福,冯益民,张克信,张智勇,王方国,邢光福,郝国杰,冯艳芳.2009.中国大地构造单元划分.中国地质,36(1):1~28.
裴福萍,王志伟,曹花花,许文良,王枫.2014.吉林省中部地区早古生代英云闪长岩的成因:锆石U-Pb年代学和地球化学证据.岩石学报,30(07):2009~2019.
彭玉鲸,王占福.1997.吉林省蛇绿岩问题.吉林地质,16(1):17~29.
邱殿明,张兴洲,张春艳.2004,吉林省延边卧龙地区青龙村群地球化学特征.吉林大学学报(地球科学版),34(4):509~516.
沈其韩,耿元生,宋彪,万渝生.2005.华北和扬子陆块及秦岭-大别造山带地表和深部太古宙基底的新信息.地质学报,79(5):616~627.
宋运红,杨凤超,闫国磊,魏明辉,石绍山.2016.辽东地区古元古代花岗岩SHRIMP U-Pb年龄、Hf同位素组成及构造意义.地质学报,90(10):2620~2636.
孙德有,吴福元,高山,路孝平.2005.吉林中部晚三叠世和早侏罗世两期铝质A型花岗岩的厘定及对吉黑东部构造格局的制约.地学前缘,12(2):263~275.
万渝生,刘敦一,殷小艳,Simon A Wilde,谢烈文,杨岳衡,周红英,伍家善.2007.鞍山地区铁架山花岗岩及表壳岩的锆石SHRIMP年代学和Hf同位素组成.岩石学报,23(2):241~252.
万渝生,宋彪,杨淳,刘敦一.2005.辽宁抚顺-清原地区太古宙岩石SHRIMP锆石U-Pb年代学及其地质意义.地质学报,79(1):78~87.
王立武,王颖,杨静,吴国庆,李国艳,盛利.2007.用碎屑锆石SHRIMP年代学方法恢复松辽盆地南部前中生代基底的源区特征.地学前缘,14(4):151~158.
王志伟,裴福萍,曹花花,王子进,许文良.2013.华北板块北缘东段石炭纪早期的岩浆事件及其构造意义---锆石U-Pb年龄与岩石组合证据.地质通报,32(2~3):279~286.
吴元保,郑永飞.2004.锆石成因矿物研究及其对U-Pb年龄解释的制约.科学通报,49(16):1589~1604.
郗爱华,任洪茂,张宝福,王永祥,史书宝,支学军.2003.吉林中部呼兰群同位素年代学及其地质意义.吉林大学学报(地球科学版),33(1):15~18.
肖玲玲,刘福来.2015.华北克拉通中部造山带早前寒武纪变质演化历史评述.岩石学报,31(10):3012~3044.
徐公愉.1991.吉林省地质述要---对吉林省大地构造及地壳演化的新识.地质科技通报,(7):46~48.
殷小艳,万渝生,刘敦一,Wilde S A,周红英,伍家善.2006.鞍山地区铁架山花岗岩中表壳岩的碎屑锆石SHRIMP年龄及其地质意义.岩石矿物学杂志,25(4):283~286.
张春艳,张兴洲,邱殿明.2007.延边地区青龙村群斜长角闪岩中锆石U-Pb同位素年龄及地质意义.吉林大学学报(地球科学版),37(4):672~677.
张广良,吴福元.2005.吉林红旗岭地区造山后镁铁---超镁铁岩体的年代测定及其意义.地震地质,27(4):600~608.
赵春荆,等.1996.吉黑东部构造格架及地壳演化.沈阳:辽宁大学出版社.
周红英,刘敦一,万渝生,董春艳.2008.辽宁鞍山地区东山杂岩带3.3~3.1Ga期间的岩浆作用---锆石SHRIMP U-Pb定年.地质通报,27(12):2122~2126.
(1)长春地质学院.1960.吉林市幅、盘石县幅1∶20万区域地质调查—年度总结报告.
(2)吉林省地质矿产局.1980.1∶5万五里河子幅区域地质调查报告.
(3)于宏斌,等.2007.吉林市幅1∶25万区域地质调查报告.
(4)李长庚,等.1989.吉林省永吉县五里河子乡三家子一带有色金属矿产普查地质总结.
(5)付俊彧,等.2016.东北基础地质综合调查与片区总结报告.