Geochemistry of Zhalantun dyke swarm in north Da Hinggan Mountain and its geological implication
文献类型：期刊论文
| 作者 | Zhang YuTao; Zhang LianChang; Ying JiFeng; Zhou XinHua |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 22期号:11页码:2733-2742 |
| 关键词 | Zhalantun dyke swarm petrogeochemistry remelting of the lower crust Da Hinggan Mountain |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Zhalantun dyke swarm was emplaced in a late Carboniferous Zhalantun granitic pluton, Inner Mongolia. The dyke swarm consists of diorite porphyrite in lithology. The samples all have porphyraceous texture. Phenocrysts are plagioclase,alkalic feldspar, hornblende,pyroxene and quartz, matrixes are fine-grained minerals above mentioned and glass. Zircon U-Pb determination yields a concordant age of 120.6 +/- 4.7 Ma and Ar-40-Ar-39 dating of the matrix gives a plateau age of 122.2 +/- 0.6Ma, indicating intrusive time of the dyke swarm is the early Cretaceous. The chemical analyses of the dyke swarm show that SiO, contents have a range of 56.88% similar to 61.69%, Al2O3 contents range from 15.83% to 19.29%, and total alkali is high (5.32% similar to 8.37%). The total REE contents have a large variation, ranging from 121.4 x 10(-6) to 144.1 X 10(-6). The samples have high ( La/Yb), Values (6.24 similar to 10.40) and little negative Eu anomaly ( 0.92 similar to 0.79). The samples are enriched in LILE and depleted in HFSE. Isotopic geochemistry shows that the dykes have high epsilon(Nd) ( t) of + 3.06 and low ( Sr-87/Sr-86)(i) of 0.7047 similar to 0.7053 and Pb characteristics similar to those of mantle. According to the geochemistry and geochronology of the dyke swarm and compared to the contemporary volcanic rocks, we concluded that the dykes originated from the remelting of the underplating basaltic juvenile lower crust. |
| WOS关键词 | I-TYPE GRANITES ; CRUSTAL GROWTH ; NORTHEASTERN CHINA ; NE CHINA ; ISOTOPIC CONSTRAINTS ; U-PB ; PETROGENESIS ; ORIGIN ; EXTENSION ; MONGOLIA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000242929100011 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66758]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang YuTao |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang YuTao,Zhang LianChang,Ying JiFeng,et al. Geochemistry of Zhalantun dyke swarm in north Da Hinggan Mountain and its geological implication[J]. ACTA PETROLOGICA SINICA,2006,22(11):2733-2742. |
| APA | Zhang YuTao,Zhang LianChang,Ying JiFeng,&Zhou XinHua.(2006).Geochemistry of Zhalantun dyke swarm in north Da Hinggan Mountain and its geological implication.ACTA PETROLOGICA SINICA,22(11),2733-2742. |
| MLA | Zhang YuTao,et al."Geochemistry of Zhalantun dyke swarm in north Da Hinggan Mountain and its geological implication".ACTA PETROLOGICA SINICA 22.11(2006):2733-2742. |
入库方式： OAI收割
来源：地质与地球物理研究所
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