Geochronological age and tectonic background of the dabate a-type granite pluton in the west tianshan
文献类型：期刊论文
| 作者 | Tang GongJian1,2; Chen HaiHong3; Wang Qiang1; Zhao ZhenHua1; Wyman, Derek A.4; Jiang ZiQi1; Jia XiaoHui1,2 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 24期号:5页码:947-958 |
| 关键词 | Zircon la-icpms u-pb dating A-type granite Post-collision West tianshan |
| ISSN号 | 1000-0569 |
| 通讯作者 | Tang gongjian() |
| 英文摘要 | The dabate granitic porphyry pluton is located geographically to the north of the sayram lake, western tianshan and, tectonically, occurs in the orogenic belt between the junggar plate to the north and the yli-central tianshan plate to the south. it mainly consists of biotite-bearing granite porphyries that are geochemically similar to a-type granites. they have high sio(2) (75, 6% similar to 77. 6%), alkalis (na(2)o + k(2)o = 8. 27% similar to 8. 70%), fe/( fe + mg) (0. 91 similar to 0. 98) and (ga/al) x 10(4) (3. 19 similar to 3. 40) values, but low al(2)o(3)(12. 04% similar to 12. 91%) and cao (0. 28% similar to 0.34%) contents. they are enriched in large ion lithophile elements rb, th and u) and high field strength elements ( nb, ta, zr and hf), but have obvious negative eu, ba and sr anomalies and "sea-gull"-type rare earth element pattern. they also have relatively high rb/nb and y/nb ratios, indicating a(2)-type granite characteristics. our new zircon la-icp-ms u-pb age data suggest that the dabate a-type granite porphyries were generated in the early permian (288. 9 +/- 2. 3ma). some residual zircon cores have a late carboniferous (319. 0 +/- 4. 7ma) age, indicating that the source of the granitic porphyries likely contains carboniferous magmatic rocks. taking into account reginoal geological and magmatic rock data, we suggest that the northern tianshan was in an extensional setting by the early permian, which was possibly related to post-collisional evolution of the orogenic belt. |
| WOS关键词 | PHANEROZOIC CRUSTAL GROWTH ; PALAEO-ASIAN OCEAN ; CHINESE TIEN-SHAN ; NORTHWESTERN CHINA ; TRACE-ELEMENT ; OROGENIC BELT ; NW CHINA ; CONTINENTAL GROWTH ; ISOTOPIC EVIDENCE ; EASTERN TIANSHAN |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000259628700002 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2385295 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Tang GongJian |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 4.Univ Sydney, Div Geol & Geophys, Sch Geosci, Sydney, NSW 2006, Australia |
| 推荐引用方式 GB/T 7714 | Tang GongJian,Chen HaiHong,Wang Qiang,et al. Geochronological age and tectonic background of the dabate a-type granite pluton in the west tianshan[J]. Acta petrologica sinica,2008,24(5):947-958. |
| APA | Tang GongJian.,Chen HaiHong.,Wang Qiang.,Zhao ZhenHua.,Wyman, Derek A..,...&Jia XiaoHui.(2008).Geochronological age and tectonic background of the dabate a-type granite pluton in the west tianshan.Acta petrologica sinica,24(5),947-958. |
| MLA | Tang GongJian,et al."Geochronological age and tectonic background of the dabate a-type granite pluton in the west tianshan".Acta petrologica sinica 24.5(2008):947-958. |
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来源：中国科学院大学
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