The role of solid–solid phase transitions in mantle convection

M Faccenda, L Dal Zilio - Lithos, 2017 - Elsevier
With changing pressure and temperature conditions, downwelling and upwelling crustal and
mantle rocks experience several solid–solid phase transitions that affect the mineral …

Supercontinents, mantle dynamics and plate tectonics: a perspective based on conceptual vs. numerical models

M Yoshida, M Santosh - Earth-Science Reviews, 2011 - Elsevier
The periodic assembly and dispersal of supercontinents through the history of the Earth had
considerable impact on mantle dynamics and surface processes. Here we synthesize some …

The making and breaking of supercontinents: some speculations based on superplumes, super downwelling and the role of tectosphere

M Santosh, S Maruyama, S Yamamoto - Gondwana Research, 2009 - Elsevier
The mechanisms of formation and disruption of supercontinents have been topics of debate.
Based on the Y-shaped topology, we identify two major types of subduction zones on the …

Contrasted continental rifting via plume-craton interaction: Applications to Central East African Rift

A Koptev, E Burov, E Calais, S Leroy, T Gerya… - Geoscience …, 2016 - Elsevier
Abstract The East African Rift system (EARS) provides a unique system with the
juxtaposition of two contrasting yet simultaneously formed rift branches, the eastern, magma …

Mantle dynamics with pressure-and temperature-dependent thermal expansivity and conductivity

N Tosi, DA Yuen, N de Koker… - Physics of the Earth and …, 2013 - Elsevier
In numerical simulations of mantle convection it is commonly assumed that the coefficients of
thermal expansion α and thermal conduction k are either constant or pressure-dependent …

[PDF][PDF] Глобальная геодинамическая эволюция Земли и глобальные геодинамические модели

НЛ Добрецов - Геология и геофизика, 2010 - ipgg.sbras.ru
Статья основана на докладе «Современные проблемы геодинамики», сделанном
автором на бюро Отделения наук о Земле 17 ноября 2009 г.[Фирсова, 2009] …

The P and S wave velocity structure of the mantle beneath eastern Africa and the African superplume anomaly

GD Mulibo, AA Nyblade - Geochemistry, Geophysics …, 2013 - Wiley Online Library
P and S relative arrival time residuals from teleseismic earthquakes recorded on over 60
temporary AfricaArray broadband seismic stations deployed in Uganda, Tanzania, and …

Velocity amplitudes in global convection simulations: The role of the Prandtl number and near-surface driving

B O'Mara, MS Miesch, NA Featherstone… - Advances in Space …, 2016 - Elsevier
Several lines of evidence suggest that the velocity amplitude in global simulations of solar
convection, U, may be systematically over-estimated. Motivated by these recent results, we …

Global geodynamic evolution of the Earth and global geodynamic models

NL Dobretsov - Russian Geology and Geophysics, 2010 - Elsevier
The paper is a synthesis of models for basic geodynamic processes (spreading, subduction
transient into collision, mantle plumes) in relation with the Earth's evolution and regularly …

Mantle transition zone thinning beneath eastern Africa: Evidence for a whole‐mantle superplume structure

GD Mulibo, AA Nyblade - Geophysical Research Letters, 2013 - Wiley Online Library
P to S conversions from the 410 and 660 km discontinuities observed in receiver function
stacks reveal a mantle transition zone that is~ 30–40 km thinner than the global average in a …