赣南营前岩体的年代学, 地球化学, Sr-Nd-Hf 同位素组成及其地质意义.pdf

1000-0569/ 2010 /026( 03) -09 19-37 Acta etrolog ica Sinica 岩石学报 Sr-Nd-Hf * 1 1 2 郭春丽 毛景文 陈毓川 1 1 2 GUO ChunL i , M AO J inW en and CHEN Y uChuang 11 , , 100037 21 , 100037 11MLR K ey Laboratory of M etallogeny and M ineral Assessmen,t Insitute of M ineral Resources, Chinese A cademy of Geolog ical Sciences, Beij ing 100037, China 21 ChineseAcademy of Geolog icalSciences, Beij ing 100037, China 2009-12-19 收稿, 20 10-02-17 改回1 Guo CL, M ao JW and Chen YC1 20101 SHR IMP zircon U-P dating, geochem istry, Sr-N d-Hf isotopic analysis of the Y ingqian intrusion in Jiangxi Province, South China and its geological significance1A cta P etr olog ica S in ica, 26( 3): 919- 937 A stract T he Y ingq ian in ru sion is lo ca ed in sou hern J iangx i P rov ince o f he Eas N anling reg ion, and cons is s of gran i o ids of w o per iods of g rani o ids, m ega-porphyr i ic g ranod ior i es and f ine-g rained g rani es1 There are a lo o fm e lan ic m onzon i ic enclav es in m eg a- porphy ri ic g ranod ior i es1 SHR IM P zircon U-Pb da ing g ives he ages of 17212 ? 311M a for he earlie r granodio ri es, 1671 6 ? 31 3M a fo r enclaves, 168 ? 3M a fo r la e r g rani es, indica ing ha he Y ingq ian in rus ion is a M id-Jurassic m agm a ic p lu on1 A ll o f he rocks fall in o he calc-a lkaline ca egory1 The ir w ho le ro ck race e lem en s dem ons ra e o al LREE enr ichm en w i hou sign if ican Eu anoma lies and obv iou s frac iona ion be w een LREE andHR EE1 L ILE enr ichm en and HFSE dep le ion, and sign if ican ly nega iv e N b-T a anoma lies charac erized he prmi