Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1920470117 |
In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures | |
Morard, Guillaume1,2; Hernandez, Jean-Alexis3,4; Guarguaglini, Marco3; Bolis, Riccardo3; Benuzzi-Mounaix, Alessandra3; Vinci, Tommaso3; Fiquet, Guillaume1; Baron, Marzena A.1; Shim, Sang Heon5; Ko, Byeongkwan5; Gleason, Arianna E.6,7; Mao, Wendy L.6; Alonso-Mori, Roberto7; Lee, Hae Ja7; Nagler, Bob7; Galtier, Eric7; Sokaras, Dimosthenis7; Glenzer, Siegfried H.7; Andrault, Denis8; Garbarino, Gaston9; Mezouar, Mohamed9; Schuster, Anja K.10; Ravasio, Alessandra3 | |
2020-05-15 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:22页码:11981-11986 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Norway; USA; Germany |
英文摘要 | Properties of liquid silicates under high-pressure and high-temperature conditions are critical for modeling the dynamics and solidification mechanisms of the magma ocean in the early Earth, as well as for constraining entrainment of melts in the mantle and in the present-day core-mantle boundary. Here we present in situ structural measurements by X-ray diffraction of selected amorphous silicates compressed statically in diamond anvil cells (up to 157 GPa at room temperature) or dynamically by laser-generated shock compression (up to 130 GPa and 6,000 K along the MgSiO3 glass Hugoniot). The X-ray diffraction patterns of silicate glasses and liquids reveal similar characteristics over a wide pressure and temperature range. Beyond the increase in Si coordination observed at 20 GPa, we find no evidence for major structural changes occurring in the silicate melts studied up to pressures and temperatures exceeding Earth's core mantle boundary conditions. This result is supported by molecular dynamics calculations. Our findings reinforce the widely used assumption that the silicate glasses studies are appropriate structural analogs for understanding the atomic arrangement of silicate liquids at these high pressures. |
英文关键词 | amorphous silicates high pressure shock compression static compression XFEL diffraction |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000538147800024 |
WOS关键词 | CORE-MANTLE BOUNDARY ; MGSIO3 GLASS ; COORDINATION CHANGES ; MOLECULAR-DYNAMICS ; VELOCITY ; DENSITY ; LAYER ; ZONES ; EARTH ; SHOCK |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/267674 |
专题 | 地球科学 |
作者单位 | 1.Sorbonne Univ, Museum Natl Hist Nat, Inst Mineral Phys Mat & Cosmochim, CNRS,UMR 7590, F-75005 Paris, France; 2.Univ Savoie Mont Blanc, Univ Grenoble Alpes, Inst Francais Sci & Technol Transports, Amenagement & Reseaux,Inst Rech Dev,CNRS,ISTerre, F-38000 Grenoble, France; 3.Sorbonne Univ, Lab Utilisat Lasers Intenses, Ecole Polytech, Commissariat Energie Atom,CNRS, F-91128 Palaiseau, France; 4.Univ Oslo, Ctr Earth Evolut & Dynam, N-0315 Oslo, Norway; 5.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA; 6.Stanford Univ, Geol Sci, Stanford, CA 94305 USA; 7.SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA; 8.Univ Clermont Auvergne, Lab Magmas & Volcans, Inst Rech Dev, Observ Phys Globe Clermont Ferrand,CNRS, F-63000 Clermont Ferrand, France; 9.European Synchrotron Radiat Facil, F-38000 Grenoble, France; 10.Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany |
推荐引用方式 GB/T 7714 | Morard, Guillaume,Hernandez, Jean-Alexis,Guarguaglini, Marco,et al. In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(22):11981-11986. |
APA | Morard, Guillaume.,Hernandez, Jean-Alexis.,Guarguaglini, Marco.,Bolis, Riccardo.,Benuzzi-Mounaix, Alessandra.,...&Ravasio, Alessandra.(2020).In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(22),11981-11986. |
MLA | Morard, Guillaume,et al."In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.22(2020):11981-11986. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论