Compositional heterogeneity in the mantle transition zone

S Goes, C Yu, MD Ballmer, J Yan… - Nature Reviews Earth & …, 2022 - nature.com
Earth's mantle transition zone (MTZ) is characterized by several sharp increases in seismic
wave speed between~ 300 km and~ 850 km depth. These seismic discontinuities are …

WINTERC-G: mapping the upper mantle thermochemical heterogeneity from coupled geophysical–petrological inversion of seismic waveforms, heat flow, surface …

J Fullea, S Lebedev, Z Martinec… - Geophysical Journal …, 2021 - academic.oup.com
We present a new global thermochemical model of the lithosphere and underlying upper
mantle constrained by state of the art seismic waveform inversion, satellite gravity (geoid …

The Composition of Earth's Lower Mantle

M Murakami, A Khan, PA Sossi… - Annual Review of …, 2024 - annualreviews.org
Determining the composition of Earth's lower mantle, which constitutes almost half of its total
volume, has been a central goal in the Earth sciences for more than a century given the …

A poorly mixed mantle transition zone and its thermal state inferred from seismic waves

L Waszek, B Tauzin, NC Schmerr, MD Ballmer… - Nature …, 2021 - nature.com
The abrupt changes in mineralogical properties across the Earth's mantle transition zone
substantially impact convection and thermochemical fluxes between the upper and lower …

Poly (vinyl alcohol-co-ethylene)(EVOH) modified polymer inclusion membrane in heavy rare earths separation with advanced hydrophilicity and separation property

L Chen, H Dong, W Pan, J Dai, X Dai, J Pan - Chemical Engineering …, 2021 - Elsevier
Efficient separation of adjacent rare earths is an interesting and challenging job for
membrane separation scientists. In this article, a novel polymer inclusion membrane (PIM) …

[HTML][HTML] The tectonics and volcanism of Venus: New modes facilitated by realistic crustal rheology and intrusive magmatism

J Tian, PJ Tackley, DL Lourenço - Icarus, 2023 - Elsevier
To explain Venus' young surface age and lack of plate tectonics, Venus' tectonic regime has
often been proposed to be either an episodic-lid regime with global lithospheric overturns, or …

Full-waveform inversion reveals diverse origins of lower mantle positive wave speed anomalies

TLA Schouten, L Gebraad, S Noe, AJP Gülcher… - Scientific Reports, 2024 - nature.com
Determining Earth's structure is paramount to unravel its interior dynamics. Seismic
tomography reveals positive wave speed anomalies throughout the mantle that spatially …

Seismic evidence for global basalt accumulation in the mantle transition zone

C Yu, S Goes, EA Day, RD van der Hilst - Science Advances, 2023 - science.org
The mantle's compositional structure reflects the thermochemical evolution of Earth. Yet,
even the radial average composition of the mantle remains debated. Here, we analyze a …

Compositional and thermal state of the lower mantle from joint 3D inversion with seismic tomography and mineral elasticity

X Deng, Y Xu, S Hao, Y Ruan, Y Zhao… - Proceedings of the …, 2023 - National Acad Sciences
The compositional and thermal state of Earth's mantle provides critical constraints on the
origin, evolution, and dynamics of Earth. However, the chemical composition and thermal …

Deciphering the deep Earth heterogeneities from the temperature fluctuation of mantle plumes

H Liu, W Leng, W Wang, Y Zheng - Earth and Planetary Science Letters, 2023 - Elsevier
Distinguishing deep lower mantle heterogeneities and resolving their physical and chemical
properties are challenging due to the difficulty in achieving severe high-temperature and …