Continent-sized anomalous zones with low seismic velocity at the base of Earth's mantle

EJ Garnero, AK McNamara, SH Shim - Nature Geoscience, 2016 - nature.com
Seismic images of Earth's interior reveal two massive anomalous zones at the base of the
mantle, above the core, where seismic waves travel slowly. The mantle materials that …

[HTML][HTML] Core formation, mantle differentiation and core-mantle interaction within Earth and the terrestrial planets

RG Trønnes, MA Baron, KR Eigenmann, MG Guren… - Tectonophysics, 2019 - Elsevier
The terrestrial planets accreted from a diverse suite of solar system materials ranging from
strongly O-deficient materials similar to enstatite chondrites via ordinary chondrite materials …

Formation, preservation and extinction of high-pressure minerals in meteorites: temperature effects in shock metamorphism and shock classification

J Hu, TG Sharp - Progress in Earth and Planetary Science, 2022 - Springer
The goal of classifying shock metamorphic features in meteorites is to estimate the
corresponding shock pressure conditions. However, the temperature variability of shock …

Anisotropy in the deep Earth

B Romanowicz, HR Wenk - Physics of the Earth and Planetary Interiors, 2017 - Elsevier
Seismic anisotropy has been found in many regions of the Earth's interior. Its presence in the
Earth's crust has been known since the 19th century, and is due in part to the alignment of …

Large H2O solubility in dense silica and its implications for the interiors of water-rich planets

C Nisr, H Chen, K Leinenweber… - Proceedings of the …, 2020 - National Acad Sciences
Sub-Neptunes are common among the discovered exoplanets. However, lack of knowledge
on the state of matter in H 2 O-rich setting at high pressures and temperatures (P− T) places …

A hydrogen-enriched layer in the topmost outer core sourced from deeply subducted water

T Kim, JG O'Rourke, J Lee, S Chariton… - Nature …, 2023 - nature.com
The Earth's core–mantle boundary presents a dramatic change in materials, from silicate to
metal. While little is known about chemical interactions between them, a thin layer with a …

Structural Evolution of Glass with Si Coordination Number Greater than 6

Y Kono, Y Shu, C Kenney-Benson, Y Wang, G Shen - Physical Review Letters, 2020 - APS
Pair distribution function measurement of SiO 2 glass up to 120 GPa reveals changes in the
first-, second-, and third-neighbor distances associated with an increase in Si coordination …

[HTML][HTML] The stability of hydrous silicates in Earth's lower mantle: Experimental constraints from the systems MgO–SiO2–H2O and MgO–Al2O3–SiO2–H2O

MJ Walter, AR Thomson, W Wang, OT Lord, J Ross… - Chemical …, 2015 - Elsevier
We performed laser-heated diamond anvil cell experiments on bulk compositions in the
systems MgO–SiO 2–H 2 O (MSH) and MgO–Al 2 O 3–SiO 2–H 2 O (MASH) that constrain …

Diamond formation in the deep lower mantle: a high-pressure reaction of MgCO3 and SiO2

F Maeda, E Ohtani, S Kamada, T Sakamaki, N Hirao… - Scientific Reports, 2017 - nature.com
Diamond is an evidence for carbon existing in the deep Earth. Some diamonds are
considered to have originated at various depth ranges from the mantle transition zone to the …

Elasticity of a pseudoproper ferroelastic transition from stishovite to post-stishovite at high pressure

Y Zhang, S Fu, B Wang, JF Lin - Physical Review Letters, 2021 - APS
Elastic moduli (C ij) of single-crystal stishovite and post-stishovite are determined using
Brillouin light scattering, impulsive stimulated light scattering, and x-ray diffraction up to 70 …