Characteristics of the lithospheric mantle revealed by peridotite xenoliths from Changbaishan volcanic rocks
文献类型：期刊论文
| 作者 | Xu QingHu2; Liu JiaQi1; Mo XuanXue2; He HuaiYu1; Zhang YunHui3; Zhao WenBin1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2020 |
| 卷号 | 36期号:7页码:2047-2066 |
| 关键词 | Peridotite xenolith Partial melting Mantle metasomatism Changbaishan North China Craton |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2020.07.08 |
| 英文摘要 | The Changbaishan area is located in the northeastern North China Craton, in which the Cenozoic basalts bearing abundant mantle peridotite xenolith are widely exposed, providing an excellent geological condition for studying the nature and evolution of lithospheric mantle. In this paper, petrology, whole-rock major and trace elements, mineral major elements, in situ clinopyroxene trace element and Sr-Nd-Hf isotope analysis of peridotite xenolith from Tianchi and Longgang Cenozoic basalts were carried out. The results indicate that the peridotite xenoliths are composed of lherzolite and minor harzburgite. They possess Mg-# values of 87. 4 similar to 91. 2 and show the new and fertile characteristics, with estimated equilibrium temperature of 900 similar to 1100 degrees C. The Mg-# values (% Fo) of olivine are 85. 6 similar to 91. 3. Four types of clinopyroxenes are identified: (1) seriously depleted LREE; (2) depleted LREE; (3) gently right-dipping and (4) spoon type. Clinopyroxene shows Sr isotopic features (0. 702749 similar to 0. 707276) mainly depleted and partly enriched. Also clinopyroxene shows depleted Nd-Hf isotopic features with Nd-143/Nd-144 = 0. 512886- 0. 51333, epsilon(Hf) = + 17. 7 similar to + 49. 8. The peridotites in Changbaishan area experienced partial melting lower and slightly lager than 10% different degrees of metasomatism. The westward subduction of the Pacific plate caused the asthenosphere to upwelling and carry a large amount of crustal material into the deep mantle, and the lithospheric mantle to undergo peridotite-melt reaction. As a result, new and fertile oceanic lithospheric mantle, with minor ancient refractory lithospheric mantle remnants was formed beneath the Changbaishan area in northeastern North China Craton. |
| WOS关键词 | NORTH CHINA CRATON ; HF ISOTOPE CONSTRAINTS ; SINO-KOREAN CRATON ; TRACE-ELEMENT ; LU-HF ; CARBONATITE METASOMATISM ; OS ISOTOPES ; ULTRAMAFIC XENOLITHS ; SPINEL PERIDOTITES ; ICPMS ANALYSIS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000596477200008 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/99877]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Liu JiaQi |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 611756, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu QingHu,Liu JiaQi,Mo XuanXue,et al. Characteristics of the lithospheric mantle revealed by peridotite xenoliths from Changbaishan volcanic rocks[J]. ACTA PETROLOGICA SINICA,2020,36(7):2047-2066. |
| APA | Xu QingHu,Liu JiaQi,Mo XuanXue,He HuaiYu,Zhang YunHui,&Zhao WenBin.(2020).Characteristics of the lithospheric mantle revealed by peridotite xenoliths from Changbaishan volcanic rocks.ACTA PETROLOGICA SINICA,36(7),2047-2066. |
| MLA | Xu QingHu,et al."Characteristics of the lithospheric mantle revealed by peridotite xenoliths from Changbaishan volcanic rocks".ACTA PETROLOGICA SINICA 36.7(2020):2047-2066. |
入库方式： OAI收割
来源：地质与地球物理研究所
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