Discovery of a Permian quartz syenitic porphyritic dyke from the Tarim basin and its tectonic implications.
文献类型：期刊论文
| 作者 | Yang ShuFeng; Li ZiLong; Chen HanLin; Xiao WenJiao; Yu Xing; Lin XiuBin; Shi XiGui |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2006-05-01 |
| 卷号 | 22期号:5页码:1405-1412 |
| 关键词 | A-type Quartz Syenitic Porphyritic Dyke Geochemistry Within-plate Setting Zircon Shrimp Age Dating Tarim Basin |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Huge Permian basalts and igneous rocks related (260 similar to 292 Ma), occurred in the Tarim Basin, Xinjiang are mainly composed of basalts, diabases, basaltic andesites, ultramafic rocks and syenites. This study is the first report of the quartz syenitic porphyritic dyke occurred in Shuigongtuan of Bachu County, Tarim Basin. The quartz syenitic porphyry in this dyke is metaluminous (A/CNK < 1), and has SiO2 of 66 similar to 67%,enriched in K2O + Na2O(10 similar to 11%) and K2O/Na2O(0.8 similar to 0.9), and low Mg/(Mg + Fe) ratios. The rocks are enriched in LILE(Ba,Rb)and HSFE(Zr,Nb,Y), Ga/Al ratios and total rare earth elements(631 similar to 734 x 10(-6)), high LREE/HREE ratios, and having negative Eu anomalies. The chemical characteristics and tectonic discriminative diagrams show that the rocks have geochemical affinity with A - type granites. Low Y/Nb(0.4) < 1.2, and enriched in LILE and Nb evenness - enrichment in the spider diagram indicates typical within - plate environment and a source from mantle, which may be derived from hot basic magma by fractional crystallization. Compared with the Xiaohaizi syenites, the quartz syenitic porphyry has almost the same geochemical characteristics, and they may be derived from the same source. The concordia age of 277Ma 4 Ma was obtained from the Xiaohaizi syenitic body by the SHRIMP U - Pb zircon age dating in this study, indicating that the intrusive age of the Xiaohaizi syenitic body is approximately 277Ma. Based on the present study, the Shuigongtuan quartz syenitic porphyritic dyke and Xiaohaizi syenitic body probably formed during Early Permian(277Ma), and represented the products of within-plate environments, indicating the end of the last large magmatic thermal event happened in the Tarim Basin. |
| WOS关键词 | PETROGENESIS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000239220600029 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65902]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang ShuFeng |
| 作者单位 | 1.Zhejiang Univ, Coll Sci, Dept Earth Sci, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang ShuFeng,Li ZiLong,Chen HanLin,et al. Discovery of a Permian quartz syenitic porphyritic dyke from the Tarim basin and its tectonic implications.[J]. ACTA PETROLOGICA SINICA,2006,22(5):1405-1412. |
| APA | Yang ShuFeng.,Li ZiLong.,Chen HanLin.,Xiao WenJiao.,Yu Xing.,...&Shi XiGui.(2006).Discovery of a Permian quartz syenitic porphyritic dyke from the Tarim basin and its tectonic implications..ACTA PETROLOGICA SINICA,22(5),1405-1412. |
| MLA | Yang ShuFeng,et al."Discovery of a Permian quartz syenitic porphyritic dyke from the Tarim basin and its tectonic implications.".ACTA PETROLOGICA SINICA 22.5(2006):1405-1412. |
入库方式： OAI收割
来源：地质与地球物理研究所
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