Advances in map** lowermost mantle convective flow with seismic anisotropy observations

J Wolf, M Li, MD Long, E Garnero - Reviews of Geophysics, 2024 - Wiley Online Library
Convective flow in the deep mantle controls Earth's dynamic evolution, influences plate
tectonics, and has shaped Earth's current surface features. Present and past convection …

New advances in using seismic anisotropy, mineral physics and geodynamics to understand deformation in the lowermost mantle

A Nowacki, J Wookey, JM Kendall - Journal of Geodynamics, 2011 - Elsevier
The D′′ region, which lies in the lowermost few hundred kilometres of the mantle, is a
central cog in the Earth's heat engine, influencing convection in the underlying core and …

Rheological structure of the mantle of a super-Earth: Some insights from mineral physics

S Karato - Icarus, 2011 - Elsevier
The rheological properties of the mantle of super-Earths have important influences on their
orbital and thermal evolution. Mineral physics observations are reviewed to obtain some …

Slip Systems in MgSiO3 Post-Perovskite: Implications for D′′ Anisotropy

L Miyagi, W Kanitpanyacharoen, P Kaercher, KKM Lee… - Science, 2010 - science.org
Understanding deformation of mineral phases in the lowermost mantle is important for
interpreting seismic anisotropy in Earth's interior. Recently, there has been considerable …

Inversion of shear wave waveforms reveal deformation in the lowermost mantle

J Asplet, J Wookey, M Kendall - Geophysical Journal …, 2023 - academic.oup.com
It is well known that regions of the lowermost mantle—D ″—exhibit significant seismic
anisotropy. Identifying a unique mechanism for seismic anisotropy in D ″and interpreting …

Determination of pole figure coverage for texture measurements with neutron time-of-flight diffractometers

S Takajo, SC Vogel - Applied Crystallography, 2018 - journals.iucr.org
The coverage of a given diffraction instrument as a percentage of the area 2π of a pole
figure hemisphere is a crucial parameter of each diffraction instrument used for texture or …

Flow and deformation in Earth's deepest mantle: Insights from geodynamic modeling and comparisons with seismic observations

M Li, J Wolf, E Garnero, MD Long - Journal of Geophysical …, 2024 - Wiley Online Library
The dynamics of Earth's D ″layer at the base of the mantle plays an essential role in Earth's
thermal and chemical evolution. Mantle convection in D ″is thought to result in seismic …

Seismic detection of post-perovskite inside the Earth

L Cobden, C Thomas, J Trampert - The Earth's heterogeneous mantle: A …, 2015 - Springer
Since 2004, we have known that perovskite, the most abundant mineral in the lower mantle,
has the capacity to transform to a denser structure, post-perovskite, if subjected to sufficiently …

Elastic anisotropy of D ″predicted from global models of mantle flow

AM Walker, AM Forte, J Wookey… - Geochemistry …, 2011 - Wiley Online Library
In order to test the hypothesis that seismic anisotropy in the lowermost mantle is caused by
the development of a post‐perovskite lattice preferred orientation, and that anisotropy can …

Deformation in the lowermost mantle: From polycrystal plasticity to seismic anisotropy

HR Wenk, S Cottaar, CN Tomé, A McNamara… - Earth and Planetary …, 2011 - Elsevier
In the deep earth, deformation occurs at many scales: large-scale convection produces
subduction of slabs and upwelling of plumes in the mantle. At the high temperature/high …