Ar-40/ar-39 age and geochemistry of the ultrapotassic magmatic rocks from bugula in nileke, xinjiang and its tectonic implication
文献类型：期刊论文
| 作者 | Yang WuBin1,2; Niu HeCai1; Luo Yong1,2; Shan Qiang1; 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:3065-3073 |
| 关键词 | Bugula Ultrapotassic igneous rocks Ar-40-ar-39 dating Tectonic setting |
| ISSN号 | 1000-0569 |
| 通讯作者 | Yang wubin() |
| 英文摘要 | The ultrapotassic magmatic rocks with tectonic significance have been confirmed at bugula in nileke, west tianshan. it intruded in the carboniferous dahalajunshan formation outcrop area is about 0. 02km(2), associated with the copper anomalous or mineralized zones. the ultrapotassic magmatic rocks show typical porphyritic texture, and the dominated phenocrysts are k-feldspar, olivine and pyroxene with some residual leucite or its pseudomorph occasionally. the bugula ultrapotassic magmatic rocks are defined as the plagioleucitites type of ultrapotassic rocks by means of their rock-forming minerals and geochemical characteristics. their negative nb, ta, zr, hf, ti anomalies and positive pb anomaly in the trace element spider diagram suggest that the bugula ultrapotassic magmatic rocks were formed in the orogenic stage. the trace element geochemical study indicaes that the ultrapotassic magma might be the products of partial melting of the phologopite-bearing garnet-spinel lherzolite occurred in the depth of a narrow range of 70km to 80km. a plateau age of 274.2 +/- 1. 6ma of a flat ar-40-ar-39 spectrum was obtained for the ultrapotassic magmatic rocks by laser stepwise heating method. its inverse isochron age of 274. 3 +/- 4. 4ma is agreed with the plateau age within analytical error. so, we suggested that the eastern awnlale mountains were within the stage of orogenic evolution in middle permian at least on the basis of the geochemical and geochronological studies of die ultrapotassic magmatic rocks. |
| WOS关键词 | CARBONIFEROUS VOLCANIC-ROCKS ; PB ISOTOPIC CHARACTERISTICS ; WESTERN TIANSHAN MOUNTAINS ; SUBALKALINE MAGMAS ; LEUCITE LAMPROITES ; CENOZOIC VOLCANISM ; NORTH XINJIANG ; TRACE-ELEMENT ; CHINA ; PROVINCE |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000284450800018 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2409653 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yang WuBin |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Xinjiang Bur Geol & Mineral Resource Explorat, Geol Survey Team 7, Wusu 833000, Peoples R China 4.Jiangxi Prov Inst Geol Survey, Nanchang 330030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang WuBin,Niu HeCai,Luo Yong,et al. Ar-40/ar-39 age and geochemistry of the ultrapotassic magmatic rocks from bugula in nileke, xinjiang and its tectonic implication[J]. Acta petrologica sinica,2010,26(10):3065-3073. |
| APA | Yang WuBin.,Niu HeCai.,Luo Yong.,Shan Qiang.,Zhou ChangPing.,...&Yu XueYuan.(2010).Ar-40/ar-39 age and geochemistry of the ultrapotassic magmatic rocks from bugula in nileke, xinjiang and its tectonic implication.Acta petrologica sinica,26(10),3065-3073. |
| MLA | Yang WuBin,et al."Ar-40/ar-39 age and geochemistry of the ultrapotassic magmatic rocks from bugula in nileke, xinjiang and its tectonic implication".Acta petrologica sinica 26.10(2010):3065-3073. |
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来源：中国科学院大学
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