Geochemical characteristic, shrimp zircon u-pb dating and tectonic implication for granitoids in chonghuer basin, altai, xinjiang
文献类型：期刊论文
| 作者 | Zeng QiaoSong; Chen GuangHao; Wang He; Shan Qiang |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2007-08-01 |
| 卷号 | 23期号:8页码:1921-1932 |
| 关键词 | Granitoid Early paleozoic Shrimp zircon u-pb dating Chonghuer basin Altai |
| ISSN号 | 1000-0569 |
| 通讯作者 | Zeng qiaosong(zengqs@gig.ac.cn) |
| 英文摘要 | A voluminous of granitoids occur in the north margin of the chonghuer basin. petrochemical analysis and mineralogy study classify them as plagiogranites-tonalites. their outcropping characteristics indicate they are probably controlled by n-s basement structure, which is different from the late paleozoic major nw-ne structuring direction. the granites are rich in elements rb, ba, la, ce, depleted in ta, nb, p, ti, which are a suite of moderate-k calc-alkline rocks. these granitoids belong to metaluminous to peraluminous synorogenic crust melting series. trace elements y-nb, rb-y + nb, nb-ta diagrams display an environment of the active continental marginal volcanic arc. shrimp zircon u-pb method yields a 413 +/- 3.8 ma coordinate age, which represents the crystallization age of magma. this age together with that of volcanic rock (436 +/- 4ma) shows the chonghuer basin was formed in the silurium. these granitoids are consist predominantly of crustal source with some crust-mantle contamination during their emplacement. in the end of ordovician-silurian orogenic event, the regional danymo-heat flow metamorphism resulted from thermal-dome at depth causes middle-upper crust rocks to magmatization and granitization, which formed the s-type gneissoid granitoids in the studied area. |
| WOS关键词 | NORTHWEST CHINA ; CONTINENTAL GROWTH ; CRUSTAL GROWTH ; OROGENIC BELT ; EVOLUTION ; ROCKS ; ACCRETIONARY ; MOUNTAINS ; AGE |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000249590600013 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380420 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zeng QiaoSong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Metallogen Dynam, Guangzhou 510640, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng QiaoSong,Chen GuangHao,Wang He,et al. Geochemical characteristic, shrimp zircon u-pb dating and tectonic implication for granitoids in chonghuer basin, altai, xinjiang[J]. Acta petrologica sinica,2007,23(8):1921-1932. |
| APA | Zeng QiaoSong,Chen GuangHao,Wang He,&Shan Qiang.(2007).Geochemical characteristic, shrimp zircon u-pb dating and tectonic implication for granitoids in chonghuer basin, altai, xinjiang.Acta petrologica sinica,23(8),1921-1932. |
| MLA | Zeng QiaoSong,et al."Geochemical characteristic, shrimp zircon u-pb dating and tectonic implication for granitoids in chonghuer basin, altai, xinjiang".Acta petrologica sinica 23.8(2007):1921-1932. |
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来源：中国科学院大学
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