大兴安岭东北部早古生代花岗岩锆石U-Pb年龄、Hf同位素特征及地质意义
Zircon U-Pb ages, Hf isotopic characteristics and their implications of the Early Paleozoic granites in the northeastern Da Hinggan Mts. , northeastern China
-
摘要: 大兴安岭东北部早古生代花岗岩属于Ⅰ型花岗岩.锆石的LA-ICPMS U-Pb年代学研究表明,十八站岩体、内河岩体、白银纳岩体的形成年龄分别为499±1、500±1和460±1 Ma,而查拉班河岩体为一多次侵入的杂岩体,其形成年龄在465~481 Ma.结合本区和邻区其它早古生代花岗岩体的锆石U-Pb年龄,限定了大兴安岭东北部地区早古生代花岗岩浆活动的时限为460~500 Ma.锆石的LA-MC-ICPMS Hf同位素研究显示,本区早古生代花岗岩的锆石εHf(t)多数介于+1.5~+3.8之间,二阶段模式年龄介于1.1~1.4 Ga,表明其主要起源于中-新元古代增生的地壳物质.结合兴安地块其它花岗岩的锆石Hf同位素资料,认为额尔古纳地块在中-新元古代时期曾发生一次重要的地壳增生事件,与兴安地块主要为显生宙地壳的特点明显不同.
-
Key words:
- Zircon U-Pb age /
- Hf isotope /
- Granite /
- Early Paleozoic /
- Northeastern Da Hinggan Mts.
-
[1] Andersen T.2002. Correction of common lead in U-Pb analyses that do not report 204pb.Chem.Geol.,192:59 -79
[2] Biao SH,Li YC,He XH,et al.1999. The geochemical characteristics of the Xinghuadukou Group in the Lvlin forestry center,Tahe,Heilongjiang Province.Regional Geol.China,18:28-33 (in Chinese with English abstract)
[3] Bichert-Toft J.,Albarede F.1997. The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantlecrust system.Earth Planet.Sci.Lett.,148:243 -258
[4] Chen B,Jahn B M,Wilde S and Xu B.2000. Two contrasting paleozoic magmatic belts in northern Inner Mongolia,China:Petrogenesis and tectonic implications.Tectonophysics,328:157-182
[5] Chu,NC,Taylor,RN.,Chavagnac,V,Nesbitt RW,Boella RM,Milton JA,German CR,Bayon G and Burton K.2002. Hf isotope ratio analysis using multi-collector inductively coupled plasma mass spectrometry:an evaluation of isobaric interference corrections.J.Anal.At.Spectrom.,17:1567-1574
[6] Ge WC,Wu FY,Zhou CY,Abdel Rahman AA.2005a.Emplacement age of the Tahe granite and its constraints on the tectonic nature of the Ergun block in the northern part of the Da Hinggan Range.Chinese Sci.Bull.,50:2097-2105
[7] Griffin WL,Wang X,Jackson SE,Pearson NJ,Oreilly SY.2002. Zircon geochemistry and magma mixing,SE China:in-situ analysis of Hf isotopes,Tonglu and Pingtan igneous complexes.Lithos,61:237-269
[8] Heilongjiang Bureau of Geology and Mineral Resources.1993. Regional Geology of Heilongjiang Province.Beijing:Geological Publishing House,1 -734 (in Chinese withy English abstract)
[9] Hong DW,Zhang JS,Wang T,et al.2004. Continental crustal growth and the supercontinental cycle:evidence from the Central Asian Orogenic Belt.J.Asian Earth Sci.,23:799 -813
[10] Jahn BM,Wu FY and Chen B.2000. Granitoids of the Central Asian Orogenic Belt and Continental Growth in the Phanerozoic.Trans.Royal Soc.Edinburgh:Earth Sci.,91:181 -193
[11] Sorokin AA,Kudryashov NM,Li JY,et al.2004. Early Paleozoic granitoids in the eastern margin of the Argun\' terrane,Amur area:first geochemical and geochronologic data.Petrology,12:367 -376
[12] Sui ZM,Ge WC,Wu FY,et al.2006. U-Pb chronology in zircon from Halabaqi granitic pluton in northeastern Daxing\'anling area and its origin.World Geol.,25:229 -236
[13] Sui ZM,Ge WC,Wu FY,Zhang JH,Xu XC and Cheng RY.2007. Zircon U-Pb ages,geochemistry and its petrogenesis of Jurassic granites in northeastern part of the Da Hinggan Mts..Acta Petrologica Sinica,23 (2):461-480
[14] Veevers JJ,Saeed A,Belousova EA,Griffin WL.2005. U-Pb ages and source composition by Hf-isotope and trace element analysis of detrital zircons in Permian sandstone and modern sand from southwestern Australia and a review of the paleogeographical and denudational history of the Yilgarn craton.Earth Sci.Rev.,68:245-279
[15] Woodhead J,Hergt J,Shelley M,Eggins S and Kemp R.2004. Zircon Hf-isotope analysis with an excimer laser,depth profiling,ablation of complex geometries,and concomitant age estimation.Chem.Geol.,209:121-135
[16] Wu FY,Sun DY,Lin Q.1999. Petrogenesis of the Phanerozoic granites and crustal growth in NortheastChina.Acta Petrol.Sinica,15:181-189 (in Chinese with English abstract)
[17] Wu FY,Jahn BM,Wilde SA and Sun DY.2000. Phanerozoic continental crustal growth:U-Pb and Sr-Nd isotopic evidence from the granites in northeastern China.Tectonophysics,328:89 -113
[18] Wu FY,Yang YH,Xie LW,Yang JH,Xu P.2006. Hf isotopic compositions of the standard zircons and baddeleyites used in U-Pb geochronology.Chem.Geol.,234:105-126
[19] Wu G,Sun FY,Zhao SC,Li ZT,Zhao AL,Pang QB,Li GY.2005. Discovery of the Early Paleozoic post-collisional granites in the northern margin of the Erguna massif and its geological significance.Chinese Sci.Bull.,50:2733 -2743
[20] Xu P,Wu FY,Xie LW and Yang YH.2004. Hf isotopic compositions of the standard zircons for U-Pb dating.Chinese Sci.Bull.,49:1642-1648
[21] Yuan HL,Wu FY,Gao S,Liu XM,Xu P,Sun DY.2003. Determination of U-Pb age and rare earth element concentrations of zircons from Cenozoic intrusions in northeastern China by laser ablation ICP-MS.Chinese Sci.Bull.,48:1511-1520
[22] Zhang J H,Ge WC,Wu FY et al.2006. Mesozoic bimodal volanic suite in Zhalatun of the Da Hinggan Range and its geological significance:zircon U-Pb age and Hf isotopic Constraints.Acta Geologica Sinica,80(1):58 -69
[23] 表尚虎,李仰春,何晓华等.1999.黑龙江省塔河绿林林场一带兴华渡口群岩石地球化学特征.中国区域地质,18:28-33
[24] 葛文春,吴福元,周长勇,Abdel Rahman AA.2005.大兴安岭北部塔河花岗岩体的时代及对额尔古纳地块构造归属的制约.科学通报,50:1239-1246
[25] 黑龙江省地质矿产局.1993.黑龙江省区域地质志.地质出版社,1-734
[26] 苗来成,刘敦一,张福勤等.2007.大兴安岭韩家园子和新林地区"兴华渡口群"和"扎兰屯群"锆石SHRIMP U-Pb年龄.科学通报,(出版中)
[27] 隋振民,葛文春,吴福元,徐学纯,王青海.2006.大兴安岭东北部哈拉巴奇花岗岩体锆石U-Pb年龄及其成因.世界地质,25:229-236.
[28] 隋振民,葛文春,吴福元等.2007.大兴安岭东北部侏罗纪花岗质岩石的锆石U-Pb年龄、地球化学特征及成因岩石学报,23(2):461-480
[29] 吴福元,孙德有,林强.1999.东北地区显生宙花岗岩的成因与地壳增生.岩石学报,15:181-189
[30] 武广,孙丰月,赵财胜.2005.额尔古纳地块北缘早古生代后碰撞花岗岩的发现及其地质意义.科学通报,50:2278-2288
[31] 徐平,吴福元,谢烈文,杨岳衡.2004. U-Pb同位素定年标准锆石的Hf同位素.科学通报,49:1403-1410
[32] 袁洪林,吴福元,高山.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,48:1511-1520
计量
- 文章访问数: 11219
- PDF下载数: 12766
- 施引文献: 0