Results 41 to 50 of about 5,696 (230)

Inverse problems in mantle convection : models, algorithms, and applications [PDF]

open access: yes, 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

Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high mu (HIMU) mantle [PDF]

open access: yes, 1999
Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/204Pb = μ (HIMU) magmatic system. Helium isotopic compositions
Alex N. Halliday   +16 more
core   +1 more source

On the global geodynamic consequences of different phase boundary morphologies [PDF]

open access: yesSolid Earth
Phase transitions can influence mantle convection patterns, inhibiting or promoting vertical flow. One such transition is the ringwoodite-to-bridgmanite plus periclase transition, which has a negative Clapeyron slope and therefore reduces mantle flow ...
G. T. Morgan   +3 more
doaj   +1 more source

Global patterns in Earth's dynamic topography since the Jurassic: the role of subducted slabs [PDF]

open access: yesSolid Earth, 2017
We evaluate the spatial and temporal evolution of Earth's long-wavelength surface dynamic topography since the Jurassic using a series of high-resolution global mantle convection models.
M. Rubey   +6 more
doaj   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

open access: yesTerra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

Empirical evidence for the fractionation of carbon isotopes between diamond and iron carbide from the Earth’s mantle [PDF]

open access: yes, 2014
S.M. would like to thank the Engineering and Physical Sciences Research Council, the Diamond Trading Company, and the Department of Physical Sciences, The Open University (UK) for financial support during his time as a PhD student at University College ...
Krispin, Catherine   +16 more
core   +1 more source

Impact-induced changes in source depth and volume of magmatism on Mercury and their observational signatures

open access: yesNature Communications, 2017
Mantle partial melting produced the volcanic crust of Mercury. Here, the authors numerically model the formation of post-impact melt sheets and find that mantle convection was weak at around 3.7–3.8 Ga and that the melt sheets of Caloris and Rembrandt ...
Sebastiano Padovan   +3 more
doaj   +1 more source

Coupling thermodynamic mineralogical models and mantle convection [PDF]

open access: yes, 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
core  

pyMelt: An extensible Python engine for mantle melting calculations

open access: yesVolcanica, 2022
Modelling the melting of Earth’s mantle is crucial for understanding the distribution of volcanic activity on Earth and for testing models of mantle convection and mantle lithological heterogeneity.
Simon Matthews   +2 more
doaj   +1 more source

Sr-Nd-Pb-Hf isotope results from ODP Leg 187: Evidence for mantle dynamics of the Australian-Antarctic Discordance and origin of the Indian MORB source [PDF]

open access: yes, 2002
New high precision PIMMS Hf and Pb isotope data for 14–28 Ma basalts recovered during ODP Leg 187 are compared with zero-age dredge samples from the Australian-Antarctic Discordance (AAD).
Barry, Tiffany Louise   +17 more
core   +1 more source

Home - About - Disclaimer - Privacy