I- and A-type composite granites of the Panshan pluton in the Jixian, Tianjin: a record of regional tectonic transformation?
文献类型：期刊论文
| 作者 | Yang FuQuan; Zhao Yue; Zeng QingLi; Wu Hai; Xia HaoDong |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 23期号:3页码:529-546 |
| 关键词 | I- and A-type composite granite geological and geochemical characteristics petrogenesis tectonic implication Panshan |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Late Triassic Panshan I- and A-type composite granites are located in the eastern segment of the Yanshan intracontinental orogenic belt. In accordance with their intruding order, from early to late, the composite granites can be divided into four units, the Langjiayu, Guanzhuang, Dongluozhuang and Xiaopanshan units. The Langjiayu and Guanzhuang units are characterized by I-type granite, but Dongluozhuang and Xiaopanshan units belong to A-type granite. Investigation results have shown that the features of petrology, major elements, trace elements, rare earth elements and Sr-Nd isotopic compositions between the I-type and A-type granites are quite different. Geochemistry of the I-type granites is rich in alkalis (K2O + Na2O = 8.15% similar to 9.50%), Al (Al2O3 = 13.05% similar to 15.49%), Ca (CaO = 1. 22% similar to 3.02%), REE, Rb, Ba, Hf and Th, poor in Nb, P, Ti, Zr and Th. The A-type granites are rich in Si, alkalis, Th, Nd, Rb, Hf, and depleted in REE, Ba, Sr, P, Ti and Zr, and have higher Rb/Sr and Ga/Al, and display obviously negative europium anomaly. The Sr-87/Sr-86 initial ratios of the rock from the Panshan composite granites ranging from 0.70234 to 0.70628 and the epsilon(Nd) (t) values of -12.73 to -15.70. Regional setting and geochemistry compositive analyse suggests that the Panshan pluton was emplaced in an environment of regional compressional shortening transforming to extension. Early I-type granites record the feature of regional compressional shortening environment, but late A-type granites record the feature of lithospheric extension and thinning. The Panshan I- and A-type composite granites are confirmed, showing that the Yanshan intracontinental orogenic belt in the end of Late Triassic to Early Jurassic went through environment transforming from regional compressional shortening to extension. |
| WOS关键词 | YANSHAN OROGEN ; VOLCANIC-ROCKS ; NORTHERN CHINA ; EASTERN CHINA ; GEOCHEMISTRY ; PETROGENESIS ; EVOLUTION ; BELT ; ORIGIN ; ND |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000246956900001 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67462]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang FuQuan |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Minist Land & Resources, Natl Geol Samples Ctr, Yanjiao 065201, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang FuQuan,Zhao Yue,Zeng QingLi,et al. I- and A-type composite granites of the Panshan pluton in the Jixian, Tianjin: a record of regional tectonic transformation?[J]. ACTA PETROLOGICA SINICA,2007,23(3):529-546. |
| APA | Yang FuQuan,Zhao Yue,Zeng QingLi,Wu Hai,&Xia HaoDong.(2007).I- and A-type composite granites of the Panshan pluton in the Jixian, Tianjin: a record of regional tectonic transformation?.ACTA PETROLOGICA SINICA,23(3),529-546. |
| MLA | Yang FuQuan,et al."I- and A-type composite granites of the Panshan pluton in the Jixian, Tianjin: a record of regional tectonic transformation?".ACTA PETROLOGICA SINICA 23.3(2007):529-546. |
入库方式： OAI收割
来源：地质与地球物理研究所
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