Petrology, geochemistry and geochronology of the intermediate to mafic dykes in northern Xinjiang since Late Paleozoic
文献类型：期刊论文
| 作者 | Xu QinQin1; Ji JianQing1; Han BaoFu1; Zhu MeiFei2; Chu ZhuYin3; Zhou Jing1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 24期号:5页码:977-996 |
| 关键词 | intermediate to mafic dykes K-Ar age geochemistry fractional crystallization partial melting northern Xinjiang |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The K-Ar ages of the intermediate to mafic dykes in northern Xinjiang are in the range of 187 similar to 271 Ma. These dykes are principally composed of gabbro, diabase, diorite and dioritic porphytite, belonging to the subalkaline series. Analysis of major elements, REE and trace elements suggest provenance contamination as well as fractional crystallization during emplacement, and the regional distribution characteristics of these dykes are controlled by the extent of partial melting. The composition variations are also produced due to difference of the fractional crystallization and partial melting. Excluding the influence of magmatism above, there is evidence showing that the dykes are originated from depleted mantle. The Nd isotopic model ages (t(DM)) are concentrated in 363 Ma and 769Ma, which implies that the source region is a Paleozoic fresh lithospheric mantle, and this mantle reservoir belongs to oceanic lithosphere mantle. These intermediate to mafic dykes widely exposed in northern Xinjiang have similar characteristics of occurrence, lithologic association and isotope in spite of diverse temporal and special features, which indicates that a relatively uniform and integrated source region has existed in northern Xinjiang since Paleozoic. It is likely to infer that this source region is related with the long lasting residual oceanic basin and the related lithosphere since Paleozoic in north Xinjiang. |
| WOS关键词 | TRACE-ELEMENT ; CONTINENTAL-CRUST ; DEPLETED-MANTLE ; ND ; CHINA ; LITHOSPHERE ; VOLCANISM ; ISOTOPE ; GROWTH ; PETROGENESIS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000259628700005 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70222]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu QinQin |
| 作者单位 | 1.Peking Univ, Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Natl Taiwan Univ, Dept Geol, Taibei 116, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu QinQin,Ji JianQing,Han BaoFu,et al. Petrology, geochemistry and geochronology of the intermediate to mafic dykes in northern Xinjiang since Late Paleozoic[J]. ACTA PETROLOGICA SINICA,2008,24(5):977-996. |
| APA | Xu QinQin,Ji JianQing,Han BaoFu,Zhu MeiFei,Chu ZhuYin,&Zhou Jing.(2008).Petrology, geochemistry and geochronology of the intermediate to mafic dykes in northern Xinjiang since Late Paleozoic.ACTA PETROLOGICA SINICA,24(5),977-996. |
| MLA | Xu QinQin,et al."Petrology, geochemistry and geochronology of the intermediate to mafic dykes in northern Xinjiang since Late Paleozoic".ACTA PETROLOGICA SINICA 24.5(2008):977-996. |
入库方式： OAI收割
来源：地质与地球物理研究所
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