Results 51 to 60 of about 24,816 (230)
Geochemistry, Geophysics, GeosystemsThe compositional evolution of the Earth's mantle is the result of mantle differentiation and thermal evolution. Partial melting of mantle materials produces geochemical heterogeneities, allows for degassing and depends on the thermal state of the mantle,
Nicolas Récalde +4 more
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On the Role of Rheological Memory for Convection‐Driven Plate Reorganizations
Geophysical Research Letters, 2022 Understanding the temporal variability of plate tectonics is key to unraveling how mantle convection transports heat, and one critical factor for the formation and evolution of plate boundaries is rheological “memory,” that is, the persistence of weak ...
L. Fuchs, T. W. Becker
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On the evolution of the water ocean in the plate-mantle system
Progress in Earth and Planetary Science, 2018 Here, we investigate a possible scenario of surface seawater evolution in the numerical simulations of surface plate motion driven by mantle dynamics, including thermo-chemical convection and water migration, from the early to present-day Earth to ...
Takashi Nakagawa +3 more
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Tectonic plates in 3D mantle convection model with stress-history-dependent rheology
Earth, Planets and Space, 2020 Plate tectonics is a key feature of the dynamics of the Earth’s mantle. By taking into account the stress-history-dependent rheology of mantle materials, we succeeded in realistically producing tectonic plates in our numerical model of mantle convection ...
Takehiro Miyagoshi +2 more
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Remote Sensing, 2023 The Afar and Ethiopian plateaus are in a dynamic uplift due to the mantle plume, therefore, considering the plume effect is necessary for any geophysical investigation including the estimation of lithospheric stress in this area. The Earth gravity models
Andenet A. Gedamu +2 more
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Osmium isotopes and mantle convection [PDF]
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002 The decay of (187)Re to (187)Os (with a half-life of 42 billion years) provides a unique isotopic fingerprint for tracing the evolution of crustal materials and mantle residues in the convecting mantle. Ancient subcontinental mantle lithosphere has uniquely low Re/Os and (187)Os/(188)Os ratios due to large-degree melt extraction, recording ancient melt-
openaire +2 more sources
Geochemistry, Geophysics, GeosystemsMineral phase transitions can either hinder or accelerate mantle flow. In the present day, the formation of the bridgmanite + ferropericlase assemblage from ringwoodite at 660 km depth has been found to cause weak and intermittent layering of mantle ...
Ranpeng Li +4 more
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Intraplate Seamounts as a Window into Deep Earth Processes [PDF]
Oceanography, 2010 Seamounts are windows into the deep Earth that are helping to elucidate various deep Earth processes. For example, thermal and mechanical properties of oceanic lithosphere can be deter-mined from the flexing of oceanic crust caused by the growth of ...
Anthony A.P. Koppers, Anthony B. Watts
doaj
A Simple Thermodynamic Model of the Internal Convective Zone of the Earth
Entropy, 2018 As it is well known both atmospheric and mantle convection are very complex phenomena. The dynamical description of these processes is a very difficult task involving complicated 2-D or 3-D mathematical models.
Karen Arango-Reyes +3 more
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Thermodynamic Limits on Magnetodynamos in Rocky Exoplanets
, 2010 To ascertain whether magnetic dynamos operate in rocky exoplanets more massive or hotter than the Earth, we developed a parametric model of a differentiated rocky planet and its thermal evolution.
Ahrens +28 more
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