Results 31 to 40 of about 270,968 (216)
Rapid transition from primary to secondary crust building on the Moon explained by mantle overturn
Nature Communications, 2023 Geochronology indicates a rapid transition (tens of Myrs) from primary to secondary crust building on the Moon. The processes responsible for initiating secondary magmatism, however, remain in debate.
Tabb C. Prissel +3 more
doaj +1 more source
On the effect of continents on mantle convection [PDF]
Journal of Geophysical Research: Solid Earth, 1995 At the Earth's surface, continents and oceans impose different thermal boundary conditions at the top of the mantle. Laboratory experiments are used to investigate the consequences of this for mantle convection. The upper boundary of the experimental tank was made of copper plates enforcing a fixed temperature and had a conductive lid of finite width ...
Guillou-Frottier, Laurent +1 more
openaire +2 more sources
Deep Water Cycling and the Multi‐Stage Cooling of the Earth
Geochemistry, Geophysics, Geosystems, 2020 Paleo‐temperature data indicates that the Earth's mantle has not cooled at a constant rate. The data show slow cooling from 3.8 to 2.5 Ga followed by more rapid cooling until the present.
J. Seales, A. Lenardic
doaj +1 more source
Influence of the asthenosphere on earth dynamics and evolution
Scientific Reports, 2023 The existence of a thin, weak asthenospheric layer beneath Earth’s lithospheric plates is consistent with existing geological and geophysical constraints, including Pleistocene glacio-isostatic adjustment, modeling of gravity anomalies, studies of ...
Lawrence Cathles +5 more
doaj +1 more source
Burying Earth's Primitive Mantle in the Slab Graveyard
Geochemistry, Geophysics, Geosystems, 2021 The evolution of mantle composition can be viewed as a process of destruction whereby the initial chemical state is overprinted and reworked with time.
T. D. Jones, N. Sime, P. E. van Keken
doaj +1 more source
A Role for Subducted Oceanic Crust in Generating the Depleted Mid‐Ocean Ridge Basalt Mantle
Geochemistry, Geophysics, Geosystems, 2020 The composition of Earth's mantle, continental crust, and oceanic crust continuously evolve in response to the dynamic forces of plate tectonics and mantle convection.
Jonathan M. Tucker +3 more
doaj +1 more source
Inverse problems in mantle convection : models, algorithms, and applications [PDF]
, 2013 textMantle convection is the principal control on the thermal and geological evolution of the earth, including the motion of the tectonic plates, which in turn influences earthquakes, tsunamis, and volcanic eruptions.
Worthen, Jennifer Anne
core +1 more source
Coupling thermodynamic mineralogical models and mantle convection [PDF]
, 2007 In this thesis I advance the integration of mineral thermodynamics into convection modeling. I have compiled a thermodynamic model of mantle mineralogy in the five component CFMAS system (CaO-FeO-MgO-Al2O3-SiO2), including mineral phases that occur close
Piazzoni, Antonio Sebastiano
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Large-scale adaptive mantle convection simulation [PDF]
A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency
Wilcox, Lucas C. +6 more
core +1 more source
Modification of the lithospheric stress field by lateral variations in plate-mantle coupling [PDF]
, 2009 The presence of deeply penetrating continental roots may locally increase the magnitude of basal shear tractions by up to a factor of 4 compared to a layered viscosity structure.
Naliboff, JB +5 more
core +1 more source