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 …

TX2019slab: A New P and S Tomography Model Incorporating Subducting Slabs

C Lu, SP Grand, H Lai… - Journal of Geophysical …, 2019 - Wiley Online Library
Large numbers of earthquakes occur in subduction zones that are marked by dipping,
narrow high seismic velocity slabs. The existence of these fast velocity slabs can cause …

Savani: A variable resolution whole‐mantle model of anisotropic shear velocity variations based on multiple data sets

L Auer, L Boschi, TW Becker… - Journal of …, 2014 - Wiley Online Library
We present a tomographic model of radially anisotropic shear velocity variations in the
Earth's mantle based on a new compilation of previously published data sets and a variable …

Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity

DR Davies, S Goes, JH Davies, BSA Schuberth… - Earth and Planetary …, 2012 - Elsevier
Two large low-shear-velocity provinces (LLSVPs) in the deep mantle beneath Africa and the
Pacific are generally interpreted as hot but chemically dense 'piles', which have remained …

SP12RTS: a degree-12 model of shear-and compressional-wave velocity for Earth's mantle

P Koelemeijer, J Ritsema, A Deuss… - Geophysical Journal …, 2016 - academic.oup.com
We present the new model SP12RTS of isotropic shear-wave (VS) and compressional-wave
(VP) velocity variations in the Earth's mantle. SP12RTS is derived using the same methods …

Global 3-D imaging of mantle conductivity based on inversion of observatory C-responses—II. Data analysis and results

A Semenov, A Kuvshinov - Geophysical Journal International, 2012 - academic.oup.com
The global 3-D electrical conductivity distribution in the mantle (in the depth range between
400 and 1600 km) is imaged by inverting C-responses estimated on a global net of …

Constraints on the presence of post-perovskite in Earth's lowermost mantle from tomographic-geodynamic model comparisons

P Koelemeijer, BSA Schuberth, DR Davies… - Earth and Planetary …, 2018 - Elsevier
Lower mantle tomography models consistently feature an increase in the ratio of shear-wave
velocity (VS) to compressional-wave velocity (VP) variations and a negative correlation …

Hydration of marginal basins and compositional variations within the continental lithospheric mantle inferred from a new global model of shear and compressional …

A Tesoniero, L Auer, L Boschi… - Journal of Geophysical …, 2015 - Wiley Online Library
We present a new global model of shear and compressional wave speeds for the entire
mantle, partly based on the data set employed for the shear velocity model savani. We invert …

[HTML][HTML] The P-wave boundary of the large-low shear velocity province beneath the Pacific

DA Frost, S Rost - Earth and Planetary Science Letters, 2014 - Elsevier
Abstract The Large Low Shear Velocity Provinces (LLSVPs) in the lower mantle represent
volumetrically significant thermal or chemical or thermo-chemical heterogeneities. Their …

Seismological expression of the iron spin crossover in ferropericlase in the Earth's lower mantle

GE Shephard, C Houser, JW Hernlund… - Nature …, 2021 - nature.com
The two most abundant minerals in the Earth's lower mantle are bridgmanite and
ferropericlase. The bulk modulus of ferropericlase (Fp) softens as iron d-electrons transition …