Influence of the miscibility of bridgmanite and davemaoite on the long-term evolution of large low shear velocity provinces : insights from 2-D numerical models
文献类型：期刊论文
| 作者 | Li Yang1,3; Niu XiaoGuang2,3; Liu ShaoHui1,3; Shi ZhiDong1,3; Zhang ZhiGang2,3; Li Juan2,3; Zhao Liang1,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 66期号:10页码:4241-4252 |
| ISSN号 | 0001-5733 |
| 关键词 | Mantle convection Large low shear velocity provinces Bridgmanite Davemaoite Miscibility Numerical modeling |
| DOI | 10.6038/cjg2023R0228 |
| 英文摘要 | Bridgmanite and davemaoite are the primary minerals in the deep mantle and are important building blocks of the lower mantle. Recent studies in mineral physics have found that the miscibility of these two minerals will be increased and even become a single perovskite-structured mineral under high-temperature and high-pressure conditions, which would potentially change the physical and chemical state of the lower mantle. In this study, we counted the miscibility of bridgmanite and davemaoite in two-dimensional mantle convection numerical simulations and discussed its long-term dynamic effects on the thermal-chemical structure of the mantle, particularly on the stability of the large low-shear-wave-velocity provinces (LLSVP) in the lower mantle. Our simulation results show that the miscibility of bridgmanite and davemaoite has a positive influence on the long-term preservation of the LLSVPs in the lower mantle, and this stabilizing effect increases as the density difference between the LLSVP and the surrounding mantle decreases, while the Clapeyron slope of the phase transition plays a minor role in the long-term evolution. |
| WOS关键词 | POST-PEROVSKITE PHASE ; SPIN TRANSITION ; PRIMORDIAL RESERVOIRS ; MANTLE CONVECTION ; IRON ; STABILITY ; DISCOVERY ; PACIFIC ; LLSVPS ; MGSIO3 |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001086914800016 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110731]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Li Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, CAS Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yang,Niu XiaoGuang,Liu ShaoHui,et al. Influence of the miscibility of bridgmanite and davemaoite on the long-term evolution of large low shear velocity provinces : insights from 2-D numerical models[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2023,66(10):4241-4252. |
| APA | Li Yang.,Niu XiaoGuang.,Liu ShaoHui.,Shi ZhiDong.,Zhang ZhiGang.,...&Zhao Liang.(2023).Influence of the miscibility of bridgmanite and davemaoite on the long-term evolution of large low shear velocity provinces : insights from 2-D numerical models.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,66(10),4241-4252. |
| MLA | Li Yang,et al."Influence of the miscibility of bridgmanite and davemaoite on the long-term evolution of large low shear velocity provinces : insights from 2-D numerical models".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 66.10(2023):4241-4252. |
入库方式： OAI收割
来源：地质与地球物理研究所
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。