Zircon U-Pb ages and Sr-Nd-Hf isotopic composition of the Haigou granitoids at the northeastern margin of North China Craton: Implications for geodynamic setting.
文献类型：期刊论文
| 作者 | Zhang Song1,2; Wang YongBin1,3; Chu ShaoXiong1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 28期号:2页码:544-556 |
| 关键词 | Haigou granitoids Sr-Nd-Hf isotopes tectonic setting Northeastern margin of the North China Craton |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Haigou granitoids, located in the northeastern margin of the North China Craton, consists of monzonite and monzogranite. This study presents zircon U-Pb age, geochemical compositions and Sr-Nd-Hf isotopes of the Haigou granitoids, to discuss the origin and tectonic setting of the magmas. The zircon U-Pb dating for the monzonite and monzogranite yields 322. 9 +/- 3. 4Ma and 320. 3 +/- 3. 5Ma respectively, indicating the magmas emplaced during the Hercynian Period. Petrochemical data indicate that they belong to calc-alkaline I-type granitoids with metaluminous affinity. They have similar geochemical features such as K2O/Na2O ratios being between 0. 51 and 0. 93, A/CNK ranging from 0. 87 to 0. 94, LREE enrichment with slightly positive Eu anomalies. In addition, trace element geochemistry also displays LILE (such as Rb, Ba, K) enrichment and HFSE (including Nb, Ta, Ti, P) depletion. The whole-rock I-sr and epsilon(Nd)(t) of the Haigou granitoids are 0. 7054 similar to 0. 7059 and -10. 4 similar to -8. 6 respectively. Two-stage Hf model ages (t(DM2)) of magmatic zircons from monzonite and monzogranite are 1. 39 similar to 1. 81Ga and 1. 67 similar to 2. 06Ga respectively, all manifesting relative low epsilon(Hf)(t) values (-7. 6 similar to -0. 8 for monzonite and -11. 5 similar to -5. 4 for monzogranite). Above-stated isotopic systematics of the granitoids implies that the magmas were derived possibly from the partial melting of ancient lower crust of the Mesoproterozoic or Paloproterozoic ages with abundant mantle contribution. Considering their ages, geochemical and isotopic signatures and regional geological evolution, it is suggested that subduction of the Paleoasian oceanic crust might be responsible for formation and emplacement of the Haigou granitoids magmas. |
| WOS关键词 | SINO-KOREAN CRATON ; LU-HF ; JILIN PROVINCE ; GEOCHRONOLOGY ; EVOLUTION ; REGION ; CRUST ; ZONE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000301991500016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84206]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Song |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.CNNC Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Song,Wang YongBin,Chu ShaoXiong. Zircon U-Pb ages and Sr-Nd-Hf isotopic composition of the Haigou granitoids at the northeastern margin of North China Craton: Implications for geodynamic setting.[J]. ACTA PETROLOGICA SINICA,2012,28(2):544-556. |
| APA | Zhang Song,Wang YongBin,&Chu ShaoXiong.(2012).Zircon U-Pb ages and Sr-Nd-Hf isotopic composition of the Haigou granitoids at the northeastern margin of North China Craton: Implications for geodynamic setting..ACTA PETROLOGICA SINICA,28(2),544-556. |
| MLA | Zhang Song,et al."Zircon U-Pb ages and Sr-Nd-Hf isotopic composition of the Haigou granitoids at the northeastern margin of North China Craton: Implications for geodynamic setting.".ACTA PETROLOGICA SINICA 28.2(2012):544-556. |
入库方式： OAI收割
来源：地质与地球物理研究所
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