全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

江南隆起带中段新元古代花岗岩锆石U-Pb年代学和Hf同位素组成研究

, PP. 73-84

Keywords: 锆石U?Pb定年,Hf同位素,九岭岩体,西园坑岩体,新元古代

Full-Text   Cite this paper   Add to My Lib

Abstract:

对江南隆起带中段湘东西园坑岩体和赣西九岭岩体的LA?ICPMS锆石U?Pb年代学测定和LA?MC?ICPMS锆石Hf同位素原位分析测试表明:西园坑岩体形成于(804±3)Ma,赣西九岭岩体的年龄为(813±4)Ma和(823±2)Ma,均为新元古代花岗岩。上述三个样品的εHf(t)的加权平均值分别为0.68±0.71,2.3±1.7和2.2±1.1,均为正值,且其中εHf(t)最大正值的模式年龄为1096Ma。结合其较高的全岩δ18O,较靠近零的全岩εHf(t)值等地球化学特征,并通过与江南隆起带东北段的皖南许村、歙县、休宁岩体和西南段桂北三防、本洞、田朋岩体的Hf同位素组成进行对比,我们认为,湘东-赣西新元古代花岗岩的源区物质除中元古代地壳物质以外,应有一定新生地幔物质的参与。其形成机制可能受到了碰撞造山作用后的伸展垮塌的影响。

References

[1]  邱检生,周金城,张光辉,凌文黎. 2002. 桂北前寒武花岗岩类岩石的地球化学与成因. 岩石矿物学杂志, 21(3): 197-208.
[2]  王剑. 2000. 华南新元古代裂谷盆地演化――兼论与Rodinia解体的关系. 北京: 地质出版社.
[3]  王剑, 李献华, Duan T Z, 刘敦一, 宋彪, 李忠雄, 高永华. 2003. 沧水铺火山岩锆石SHRIMP U?Pb年龄及“南化系”底界新证据. 科学通报, 48(16): 1726-1731.
[4]  王孝磊,周金城,邱检生,张文兰,柳小明,张桂阳. 2006. 桂北新元古代强过铝质花岗岩的成因: 锆石年代学和Hf同位素制约. 岩石学报, 22(2): 326-342.
[5]  徐夕生, 周新民. 1992. 华南前寒武纪S型花岗岩类及其地质意义. 高校地质学报, 28(3): 423-430.
[6]  于成涛, 张荣芳, 黄新曙. 2006. 九岭新元古代花岗岩侵位机制探讨. 东华理工学院学报, (增刊): 143-148.
[7]  张玉芝, 王岳军, 范蔚茗, 张爱梅, 张菲菲. 2011. 江南隆起带新元古代碰撞结束时间: 沧水铺砾岩上下层位的U?Pb年代学证据. 大地构造与成矿学, 35(1): 32-46.
[8]  赵子杰, 马大铨, 林惠坤. 1987. 桂北前寒武纪花岗岩本洞、三防岩体的研究. 武汉: 武汉地质学院出版社.
[9]  钟玉芳, 马昌前, 佘振兵, 林广春, 续海金, 王人镜, 杨坤光, 刘强. 2005. 江西九岭岩类复式岩基锆石SHRIMP U?Pb年代学. 地球科学――中国地质大学学报, 30(6): 685-691.
[10]  Bievre D P and Taylor P D. 1993. Table of the isotopic compositions of the elements. Int J Mass Spectrom Ion Process, 123(2): 149-166.
[11]  Blichert T J and Albarede F. 1997. The Lu?Hf isotope geochemistry of chondrites and the evolution of the mantle?crust system. Earth Planet Sci Lett, 148: 243-258.
[12]  Chu N C, Taylor R N, Chavagnac V, Nesbitt R W, Boella R M, Mitton J A, German C R, Bayon G and Burton K. 2002. Hf isotope ratio analysis using multi?collector inductively coupled plasma mass spectrometry: An evaluation of isobaric ineterference corrections. J Anal At Spectron, 17: 1567-1574.
[13]  Corfu F and Noble S R. 1992. Genesis of the southern Abitibi Greenstone belt, Superior Province, Canada: Evidence from zircon Hf isotope analysis using a single filament technique. Geochim Cosmochim Acta, 56: 2081-2097.
[14]  Dewey J F. 1988. Extensional collapse of orogens. Tectonics, 7: 1123-1139.
[15]  Huang X L, Xu Y G, Li X H, Li W X, Lan J B, Zhang H H, Liu Y S, Wang Y B, Li H Y, Luo Z Y and Yang Q J. 2008. Petrogenesis and tectonic implications of Neoproterozoic, highly fractionated A?type granites from Mianning, South China. Precambr Res, 165: 190-204.
[16]  Li X H, Zhu W G, Zhong H, Wang X C, He D F, Bai Z J and Liu F. 2010. The Tongde picritic dikes in the western Yangtze Block: Evidence for Ca. 800Ma mantle plume magmatism in South China during the breakup of Rodinia. Journal of Geology, 118: 509-522.
[17]  Li X H, Li Z X, Ge W C, Zhou H W, Li W X, Liu Y and Wingate M T D. 2003a. Neoproterozoic granitods in South China: Crustal melting above a mantle plume at ca.825Ma? Precambr Res, 122: 45-83.
[18]  Shu L S, Zhou G Q, Shi Y S and Yin J. 1994. Study of high pressure metamorphic blueschist and its late Proterozoic age in the eastern Jiangnan belt. Chin Sci Bull, 39: 1200-1204.
[19]  Sylvester P J. 1998. Post?collisional strongly peraluminous granites. Lithos, 45: 29-44.
[20]  Tommasi A and Vauchez A. 2001. Continental rifting parallel to ancient collisional belts: An effect of the mechanical anisotropy of the lithospheric mantle. Earth Plant Sci Lett, 185: 199-210.
[21]  Vauchez A, Barruol G and Tommasi A. 1997. Why do continents break?up parallel to ancient orogenic belts? Terra Nova, 9: 62-66.
[22]  Vervoort J D and Blichert?Toft J. 1999. Evolution of the depleted mantle: Hf isotope evidence from juvenile rocks through time. Geochim Cosmochin Acta, 63: 533-556.
[23]  Wang Q, Wyman D A, Li Z X, Bao Z W, Zhao Z H, Wang Y X, Jian P, Yang Y H and Chen L L. 2010. Petrology, geochronology and geochemistry of ca. 780Ma A?type granites in South China: Perogenesis and implications for crustal growth during the breakup of the supercontinent Rodinia. Precambrian Research, 178: 185-208.
[24]  Wang X C, Li X H, Li W X and Li Z X. 2007. Ca. 825Ma komatiitic basalts in South China: First evidence for >1500℃ mantle melts by a Rodinia mantle plume. Geology, 35: 1103-1106.
[25]  Wang X L, Zhou J C, Qiu J S, Zhang W L, Liu X M and Zhang G L. 2006. LA?ICP?MS U?Pb zircon geochronology of the Neoproterozoic igneous rocks from Northern Guangxi, South China: Implications for tectonic evolution. Precambr Res, 145: 111-130.
[26]  Wang X L, Zhou J C, Qiu J S and Gao J F. 2004. Comment on ′Neoproterozoic granitoids in South China: Crustal melting above a mantle plume at ca. 825Ma?′ by Xianhua?Li et al. Precam Res, 132: 401-403.
[27]  葛文春, 李献华, 李正祥, 周汉文, 李寄?. 2001. 桂北新元古代两类强过铝质花岗岩的地球化学研究. 地球化学, 30: 24-34.
[28]  湖南省地质矿产局. 1988. 湖南省区域地质志. 北京: 地质出版社.
[29]  胡世玲, 王松山, 桑海清, 裘冀, 刘家远. 1985. 应用40Ar/39Ar快中子活化定年技术探讨江西九岭花岗岩早期侵位时代. 岩石学报, 1(3): 29-34.
[30]  江西省地质矿产局. 1984. 江西省区域地质志. 北京: 地质出版社.
[31]  马铁球, 陈立新, 柏道远, 周柯军, 李纲, 王先辉. 2009. 湘东北新元古代花岗岩体锆石SHRIMP U?Pb年龄及地球化学特征. 中国地质. 36(1): 65-73.
[32]  李鹏春, 陈广浩, 许德如, 贺转利, 符巩固. 2007. 湘东北新元古代过铝质花岗岩的岩石地球化学特征及其成因讨论. 大地构造与成矿学, 31(1): 126-136.
[33]  李献华. 1999. 广西北部新元古代花岗岩锆石U?Pb年代学及其构造意义. 地球化学, 28(1): 1-9.
[34]  李献华, 李正祥, 葛文春, 周汉文, 李武显, 刘颖. 2001. 华南新元古代花岗岩的锆石U?Pb年龄及其构造意义. 矿物岩石地球化学通报, 20(4): 271-273.
[35]  王孝磊, 周金城, 邱检生, 高剑锋. 2004. 湘东北新元古代强过铝质花岗岩的成因: 年代学和地球化学证据. 地质论评, 50(1): 65-76.
[36]  徐备, 郭令智, 施央申. 1992. 皖浙赣地区元古代地体和多期碰撞造山带. 北京: 地质出版社: 1-112.
[37]  袁洪林, 吴福元, 高山, 柳小明, 徐萍, 孙德友. 2003. 东北地区新生代侵入体的锆石激光探针U?Pb年龄测定与稀土元素成分分析. 科学通报, 48(14):1511-1520.
[38]  袁洪林, 高山, 罗彦, 宗春蕾, 戴梦宁, 柳小明, 第五春荣. 2007. Lu?Hf年代学研究――以大别榴辉岩为例. 岩石学报, 23(2): 233-239.
[39]  Li X H, Li Z X, Sinclair J A, Li W X and Garreth C. 2006. Revisiting the "Yanbian Terrane": Implications for Neoproterozoic tectonic evolution of the western Yangtze Block, South China. Precambr Res, 151: 14-30.
[40]  Li, X H, Li W X, Li Z X and Liu Y. 2008. 850790Ma bimodal volcanic and intrusive rocks in northern Zhejiang, South China: A major episode of continental rift magmatism during the breakup of Rodinia. Lithos, 102: 341-357.
[41]  Li X H, Zhou G Q, Zhao J X, Fanning C M and Compston W. 1994. SHRIMP ion microprobe zircon U?Pb age and Sm?Nd isotopic charatristics of the NE Jiangxi ophiolite and its tectonic implications. Chin J Geochem, 13: 317-325.
[42]  Li Z X, Li X H, Kinny P D, Wang J, Zhang S and Zhou H. 2003b. Geochronology of Neoproterozoic syn?rift magmatism in the Yangtze Craton, South China and correlations with other continents: Evidence for a mantle superplume that broke up Rodinia. Precambr Res, 122: 85-109.
[43]  Li Z X, Li X H, Kinny P D and Wang J. 1999. The breakup of Rodinia: Did it start with a mantle plume beneath South China? Earth Planet Sci Lett, 173: 171-181.
[44]  Li Z X, Zhang L H and Powell C M. 1995. South China in Rodinia: Part of the missing link between Australia?East Antarctica and Laurentia? Geology, 23: 407-410.
[45]  Ludwig K R. 2003. User′s manual for Isoplot 3.0. Berkeley Geochronological Center Special Publication No.4.
[46]  Nowell G M, Kempton P D, Noble S P, Fitton J G, Saunders A D, Mahoney J J and Taylor R N. 1998. High precision Hf isotope measurements of MORB and OIB by thermal ionisation mass spectrometry: Insights into the depleted mantle. Chem Geo, 149: 211-233.
[47]  Scherer E and Muenker C. 2001. Calibration of the lutetium?hafnium clock. Washington DC: American Association for the Advancement of Science, 293: 683-687.
[48]  Wu R X, Zheng Y F, Wu Y B, Zhao Z F, Zhang S B, Liu X M and Wu F Y. 2006. Reworking of juvenile crust: Element and isotope evidence from Neoproterozoic granodiorite in South China. Precambr Res, 146: 179-212.
[49]  Yuan H L, Gao S, Dai M N, Zong C L, Günther D, Fontaine G H, Liu X M and Diwu C R. 2008. Simultaneous determinations of U?Pb age, Hf isotopes and trace element compositions of zircon by excimer laser ablation quadrupole and multiple collector ICP?MS. Chem Geol, 247: 100-118.
[50]  Zhao G C and Cawood P A. 1999. Tectonothermal evolution of the Mayuan assemblage in the Cathaysia Block: Implicaton for Neoproterozoic collision?related assembly of the South China craton. Am J Sci, 299: 306-339.
[51]  Zheng Y F, Wu R X, Wu Y B, Zhang S B, Yuan H L and Wu F Y. 2008. Rift melting of juvenile arc?derived crust: Geochemical evidence from Neoproterozoic volcanic and granitic rocks in the Jiangnan Orogen, South China. Precambr Res, 163: 351-383.
[52]  Zheng Y F, Wu Y B, Chen F K, Gong B, Li L and Zhao Z F. 2004. Zircon U?Pb and oxygen isotope evidence for a large?scale 18O depletion event in igneous rocks during the Neoproterozoic. Geochimica et Cosmochimica Acta, 68: 4145-4165.
[53]  Zheng Y F, Zhang S B, Zhao Z F, Wu Y B, Li X H, Li Z X and Wu F Y. 2007. Contrasting zircon Hf and O isotopes in the two episodes of Neoproterozoic granitoids in South China: Implications for growth and reworking of continental crust. Lithos, 96: 127-150.
[54]  Zheng Y F, Zhao Z F, Wu Y B, Zhang S B, Liu X M and Wu F Y. 2006. Zircon U?Pb age, Hf and O isotope constraints on protolith origin of ultrahigh?pressure eclogite and gneiss in the Dabie orogen. Chem Geol, 231: 135-158.
[55]  Zhou J C, Wang X L, Qiu J S and Gao J F. 2004. Geochemistry of Meso? and Neoproterozoic mafic?ulrtamafic rocks from northern Guangxi, China: Arc or plume magmatism? Geochem J, 38: 139-152.
[56]  Zhou M F, Kennedy A K, Sun M, Malpas J and Lesher C M. 2002b. Neoproterozoic arc?related mafic intrusions along the northern margin of South China: Implications for the accretion of Rodinia. J Geol, 110: 611-618.
[57]  Zhou M F, Yan D P, Knnedy A K, Li Y Q and Ding J. 2002a. SHRIMP U?Pb zircon geochronological and geochemical evidence for Neoproterozoic arc?magmatism along the western margin of the Yangtze Block, South China. Earth Planet Sci Lett, 196: 51-67.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133