Dynamics and evolution of the deep mantle resulting from thermal, chemical, phase and melting effects

PJ Tackley - Earth-Science Reviews, 2012 - Elsevier
The core–mantle boundary (CMB)–the interface between the silicate mantle and liquid iron
alloy outer core–is the most important boundary inside our planet, with processes occurring …

Globally distributed subducted materials along the Earth's core-mantle boundary: Implications for ultralow velocity zones

SE Hansen, EJ Garnero, M Li, SH Shim, S Rost - Science Advances, 2023 - science.org
Ultralow velocity zones (ULVZs) are the most anomalous structures within the Earth's
interior; however, given the wide range of associated characteristics (thickness and …

Deep mantle seismic modeling and imaging

T Lay, EJ Garnero - Annual Review of Earth and Planetary …, 2011 - annualreviews.org
Detailed seismic modeling and imaging of Earth's deep interior is providing key information
about lower-mantle structures and processes, including heat flow across the core-mantle …

Ultralow velocity zone locations: A global assessment

S Yu, EJ Garnero - Geochemistry, Geophysics, Geosystems, 2018 - Wiley Online Library
We have compiled all previous ultralow velocity zone (ULVZ) studies, and digitized their
core‐mantle boundary (CMB) sampling locations. For studies that presented sampling …

[PDF][PDF] 7.11: The core–mantle boundary region

J Hernlund, A McNamara, G Schubert - Treatise on geophysics, 2015 - researchgate.net
The Earth was formed by the accretion of both differentiated and undifferentiated parent
bodies, and the large density difference between metallic and ionic components gave rise to …

A geodynamic and mineral physics model of a solid-state ultralow-velocity zone

DJ Bower, JK Wicks, M Gurnis, JM Jackson - Earth and Planetary Science …, 2011 - Elsevier
Recent results (Wicks et al., 2010) suggest that a mixture of iron-enriched (Mg, Fe) O and
ambient mantle is consistent with wavespeed reductions and density increases inferred for …

Rolling hills on the core–mantle boundary

D Sun, DV Helmberger, JM Jackson… - Earth and Planetary …, 2013 - Elsevier
Recent results suggest that an iron-rich oxide may have fractionally crystallized from a
primordial magma ocean and settled on the core–mantle boundary (CMB). Based on …

The morphology, evolution and seismic visibility of partial melt at the core–mantle boundary: implications for ULVZs

J Dannberg, R Myhill, R Gassmöller… - Geophysical Journal …, 2021 - academic.oup.com
Seismic observations indicate that the lowermost mantle above the core–mantle boundary
(CMB) is strongly heterogeneous. Body waves reveal a variety of ultra-low velocity zones …

Normal mode sensitivity to Earth's D ″layer and topography on the core-mantle boundary: what we can and cannot see

PJ Koelemeijer, A Deuss… - Geophysical Journal …, 2012 - academic.oup.com
The core-mantle boundary (CMB) is Earth's most profound internal boundary separating the
liquid iron outer core and the solid silicate mantle. The detailed structure near the CMB has …

Intermittent and lateral varying ULVZ structure at the northeastern margin of the Pacific LLSVP

C Zhao, EJ Garnero, M Li… - Journal of Geophysical …, 2017 - Wiley Online Library
Thin patches with ultralow velocities have been proposed to exist at the core‐mantle
boundary (CMB). The detection and map** of ultralow velocity zones (ULVZs) are difficult …