Petrogenesis of the Gaojiacun mafic-ultramafic pluton at the southwestern margin of Yangtze Block: Evidence from petrology, geochemistry and geochronology.
文献类型：期刊论文
| 作者 | Du LiLin1,2; Yang CongHui1; Geng YuanSheng1; Wang XinShe1; Ren LiuDong1; Zhou XiWen1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2009-08-01 |
| 卷号 | 25期号:8页码:1897-1908 |
| 关键词 | Gaojiacun mafic-ultramafic pluton Geochemistry Island are Neoproterozoic |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The mineral assemblage, crystallizing sequence and ubiquitous occurrence of hornblende in the gabbro-peridotite pluton near Gaojiacun Village, Yanbian County, Sichuan Province, all indicate that the rocks formed from the hydrous magma. The obvious negative correlations between the major components Al2O3, CaO and MgO imply that plagioclase is not an early cumulate phase. With the total REE contents from 5.97 x 10(-6) to 221.32 x 10(-6), the LREE are moderately enriched and the LREE and HREE are weak to moderately differentiated. While the Eu anomaly is weak in gabbro and pyroxene-bearing diorite, but prominent in olive-gabbro and peridotite. As to the trace elements, negative anomalies of Nb, Ta, Zr, Hf and Ti, but positive anomalies of Ba and Sr can be observed in the gabbro and pyroxene-bearing diorite. Meanwhile the epsilon(Nd) (t) gives the range of 0.59 similar to 1.86, which is lower than that of the contemporaneous depleted mantle, suggesting the similar feature to that of basic magma of the island arc. In addition, the Neoproterozoic age, 822 +/- 8Ma, is obtained with SHRIMP U-Pb analysis of zircon from the pyroxene bearing diorite. Summarizingly the Gaojiacun pluton was derived from the partial melting of the depleted upper mantle which had experienced alteration by the fluids from the subduction zone. |
| WOS关键词 | NEOPROTEROZOIC TECTONIC EVOLUTION ; SOUTHERN SICHUAN PROVINCE ; SW CHINA ; CONTINENTAL-CRUST ; YANBIAN TERRANE ; WESTERN MARGIN ; INTRUSIVE COMPLEX ; OROGENIC BELTS ; IGNEOUS ROCKS ; ICP-MS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000269813000014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71452]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Du LiLin |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du LiLin,Yang CongHui,Geng YuanSheng,et al. Petrogenesis of the Gaojiacun mafic-ultramafic pluton at the southwestern margin of Yangtze Block: Evidence from petrology, geochemistry and geochronology.[J]. ACTA PETROLOGICA SINICA,2009,25(8):1897-1908. |
| APA | Du LiLin,Yang CongHui,Geng YuanSheng,Wang XinShe,Ren LiuDong,&Zhou XiWen.(2009).Petrogenesis of the Gaojiacun mafic-ultramafic pluton at the southwestern margin of Yangtze Block: Evidence from petrology, geochemistry and geochronology..ACTA PETROLOGICA SINICA,25(8),1897-1908. |
| MLA | Du LiLin,et al."Petrogenesis of the Gaojiacun mafic-ultramafic pluton at the southwestern margin of Yangtze Block: Evidence from petrology, geochemistry and geochronology.".ACTA PETROLOGICA SINICA 25.8(2009):1897-1908. |
入库方式： OAI收割
来源：地质与地球物理研究所
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