Mesozoic bimodal volcanic suite in Zhalantun of the Da Hinggan Range and its geological significance: Zircon U-Pb age and Hf isotopic constraints
文献类型：期刊论文
| 作者 | Zhang, JH; Ge, WC; Wu, FY; Liu, XM |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2006 |
| 卷号 | 80期号:1页码:58-69 |
| 关键词 | volcanic rocks zircon U-Pb dating Hf isotope crustal growth Da Hinggan Range NE China |
| ISSN号 | 1000-9515 |
| 文献子类 | Article |
| 英文摘要 | Mesozoic bimodal volcanic rocks of basaltic andesite and rhyolite are widely distributed in the Da Hinggan Range, but their petrogenetic relationships and geodynamic implications are rarely constrained. Detailed studies on doleritic and porphyry dikes in the Zhalantun area indicate that they display features of magma mixing, suggesting their coeval formation. In situ zircon U-Pb dating shows that the porphyry was emplaced in the Early Cretaceous with a Pb-206/U-238 age of 130 +/- 1 Ma. Zircons from the dolerite also yield an Early Cretaceous emplacement age of 124 +/- 2 Ma although some inherited zircons have been identified. These age results indicate that the Early Cretaceous was an important period of magmatism in the Da Hinggan Range. Zircons from porphyry are characterized by positive value of epsilon(Hf)(t) as high as 10.3 +/- 0.5 with Hf depleted mantle model age of 349-568 Ma, whereas magmatic zircons from the dolerite have epsilon(Hf)(t) value of 11.0 +/- 1.4 with Hf depleted mantel model age of 342-657 Ma, consistent with those from the porphyry. Considering other data on the geological evolution of this area, it is concluded that the mafic magma originated from the partial melting of Paleozoic enriched lithospheric mantle, whereas the felsic magma came from recycling of juvenile crust formed during the Paleozoic. Both of the protoliths are closely related to the subduction of the Paleo-Asian Ocean during the Paleozoic, indicating that the Paleozoic is an important period of large-scale crustal growth in the area. |
| WOS关键词 | NORTHEASTERN CHINA ; CRUSTAL GROWTH ; GEOCHEMICAL CONSTRAINTS ; CONTINENTAL GROWTH ; INNER-MONGOLIA ; CENTRAL-ASIA ; NE CHINA ; GRANITES ; PETROGENESIS ; MOUNTAINS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000235927100009 |
| 出版者 | GEOLOGICAL SOC CHINA |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66354]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Ge, WC |
| 作者单位 | 1.Jilin Univ, Coll Earth Sci, Changchun 130061, Jilin, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.NW Univ Xian, Key Lab Continental Dynam, Minist Educ, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, JH,Ge, WC,Wu, FY,et al. Mesozoic bimodal volcanic suite in Zhalantun of the Da Hinggan Range and its geological significance: Zircon U-Pb age and Hf isotopic constraints[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2006,80(1):58-69. |
| APA | Zhang, JH,Ge, WC,Wu, FY,&Liu, XM.(2006).Mesozoic bimodal volcanic suite in Zhalantun of the Da Hinggan Range and its geological significance: Zircon U-Pb age and Hf isotopic constraints.ACTA GEOLOGICA SINICA-ENGLISH EDITION,80(1),58-69. |
| MLA | Zhang, JH,et al."Mesozoic bimodal volcanic suite in Zhalantun of the Da Hinggan Range and its geological significance: Zircon U-Pb age and Hf isotopic constraints".ACTA GEOLOGICA SINICA-ENGLISH EDITION 80.1(2006):58-69. |
入库方式： OAI收割
来源：地质与地球物理研究所
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