Geochemical characteristics and petrogenesis of the aikendaban permian shoshonite in the western tianshan
文献类型：期刊论文
| 作者 | Luo Yong1,2; Niu HeCai1; Shan Qiang1; Yang WuBin1,2; Zhang Bing3; Zhou ChangPing3; Liao SiPing4; Yu XueYuan1 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 26期号:10页码:2925-2934 |
| 关键词 | Western tianshan Aikendaban Trachyandesite Trachyte Post-subduction magmatism |
| ISSN号 | 1000-0569 |
| 通讯作者 | Luo yong(luoyong@gig.ac.cn) |
| 英文摘要 | Trachyandesite and trachyte from the aikendaban formation in the western tianshan, are alkali-rich (na(2)o + k(2)o > 8%) of high-aluminium (al(2)o(3) > 13.5%) and low-titanium (tio(2) < 1. 31%), and have typical petro-geochemical characteristics of shoshonitic volcanics. compared with classic shoshonite association, the trachyandesite is obviously high in tio(2), al(2)o(3) and na(2)o, and relatively low in fe(2)o(3), cao and mgo, and the trachyte is obviously high in tio(2), fe(2)o(3) and na(2)o, comparatively low in al(2)o(3) and extremely low in cao. the bee geochemical characteristics of trachyandesite, show obvious enrichment of lree, obvious depletion of hree and negative en anomalies, high sr/y (29 similar to 49) ratio and low ((87)sr/(86)sr), (0. 7044 similar to 0.7045). trachyte show less enrichment of lree and depletion of hree, stronger negative en anomalies, even appears strong depletion phenomenon of sr, low sr/y(1. 74 similar to 2. 50) ratio and high ((87)sr/(86)sr)(i) (0. 7060 similar to 0. 7080). the results showed that both trachyandesite and trachyte from aikendaban formation as a product of post-subduction magmatism, but they were formed in different stages of subduction; the trachyandesite is a typical shoshonitic alkaline volcanics which originated by low-degree (less than 5%) partial melting of the em in the post-subduction extension stage, with melting phase of amphibole and residual phase of abundance garnet for their high sr/y ratio; and the trachyte is felsic-alkaline volcanics originated by partial melting of the juvenile lower crust in the post-subduction compression stage, which formed earlier than the trachyandesite. |
| WOS关键词 | PORPHYRY CU-AU ; NEW-SOUTH-WALES ; GOLD-COPPER MINERALIZATION ; IGNEOUS ROCKS ; GEODYNAMIC EVOLUTION ; TECTONIC EVOLUTION ; VOLCANIC-ROCKS ; TRACE-ELEMENT ; CALC-ALKALINE ; SR-ND |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000284450800005 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2412770 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Luo Yong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Sch, Coll Earth Sci, Beijing 100049, Peoples R China 3.Xinjiang Bur Geol & Mineral Resource Explorat, Geol Survey Team 7, Wusu 833000, Peoples R China 4.Jiangxi Inst Geol Survey, Nanchang 330030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo Yong,Niu HeCai,Shan Qiang,et al. Geochemical characteristics and petrogenesis of the aikendaban permian shoshonite in the western tianshan[J]. Acta petrologica sinica,2010,26(10):2925-2934. |
| APA | Luo Yong.,Niu HeCai.,Shan Qiang.,Yang WuBin.,Zhang Bing.,...&Yu XueYuan.(2010).Geochemical characteristics and petrogenesis of the aikendaban permian shoshonite in the western tianshan.Acta petrologica sinica,26(10),2925-2934. |
| MLA | Luo Yong,et al."Geochemical characteristics and petrogenesis of the aikendaban permian shoshonite in the western tianshan".Acta petrologica sinica 26.10(2010):2925-2934. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。