Discovery of Middle Silurian adakite granite and its tectonic significance in Liuyuan area, Beishan Moutains, NW China.
文献类型：期刊论文
| 作者 | Mao QiGui1,2,3; Xiao WenJiao1; Han ChunMing1; Sum Min4; Yuan Chao5; Zhang JiEn1; Ao SongJian1; Li JiLiang1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2010-02-01 |
| 卷号 | 26期号:2页码:584-596 |
| 关键词 | Adakite Slab Melting La-icpms Dating Zircon Hf Isotopic Crustal Growth Beishan Mountains |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The gneiss gran nod in Liuyuan area of the Beishan Mountains belongs to the calc-alkaline serious, characterized by having relative high SiO(2) (>56%) Al(2)O(3) (>15%) and relative low MgO (<3%) contents, Na(2)O > K(2)O; enriched in Sr (>400 x 10(-6)) and high Sr/Y ratios; relatively strong REE segregation ((La/Yb)(N) = 18 similar to 86) and depleted HREE (Yb and Y), only weak negative Eu negative (delta Eu = 0 90 similar to 0 95); enriched in LREE and LILE, depleted in HREE and HFSE. (Nb, Ta), is similar to the typical adakites formed by melting of the oceanic slab subduction However, the isotopic compositions of the adakite rocks are more radiogenic than most typical depleted adakites, with relatively high (87)Sr/(86)Sr(1) (0. 70635 similar to 0 70636), low epsilon(Nd) (t) (-0 8 similar to -0 9) and the low epsilon(Nd)(t) (-0. 8 similar to +2 7) These isotopic differences front typical adakites are attribute to participation of the crustal and/or sedimentary components in the magma source and/or the inheritance of a more radiogenic oceanic slab (OIB/E-MORB) of the source, and contaminated by crustal component in the intruded process This adakite have the crystallization age 424 +/- 4Ma by zircon LA-ICPMS U-Pb dating During the Middle Silurian, the geothermic grade was high in the Huaniushan arc, huge area high epsilon(Nd)(t) calcalkaline gramtiods intruded and extensive high-T metamorphism happened. Therefore, the favorable interpretation is that the Luyuan adakites was formed by melting of a hot subductmg oceanic slab, which could be one of most important crustal growth ways in the Early Paleozoic in the Beishan Mountains |
| WOS关键词 | PHANEROZOIC CRUSTAL GROWTH ; A-TYPE GRANITES ; SUBDUCTING OCEANIC-CRUST ; ASIAN OROGENIC BELT ; ZIRCON U-PB ; CONTINENTAL GROWTH ; EASTERN TIANSHAN ; ACCRETIONARY OROGENESIS ; PALEOZOIC ACCRETIONARY ; NORTHEASTERN CHINA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000275734400019 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/73454]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Mao QiGui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.China Nonferrous Met Resource Geol Survey, Beijing 100012, Peoples R China 3.Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China 4.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao QiGui,Xiao WenJiao,Han ChunMing,et al. Discovery of Middle Silurian adakite granite and its tectonic significance in Liuyuan area, Beishan Moutains, NW China.[J]. ACTA PETROLOGICA SINICA,2010,26(2):584-596. |
| APA | Mao QiGui.,Xiao WenJiao.,Han ChunMing.,Sum Min.,Yuan Chao.,...&Li JiLiang.(2010).Discovery of Middle Silurian adakite granite and its tectonic significance in Liuyuan area, Beishan Moutains, NW China..ACTA PETROLOGICA SINICA,26(2),584-596. |
| MLA | Mao QiGui,et al."Discovery of Middle Silurian adakite granite and its tectonic significance in Liuyuan area, Beishan Moutains, NW China.".ACTA PETROLOGICA SINICA 26.2(2010):584-596. |
入库方式： OAI收割
来源：地质与地球物理研究所
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