Results 41 to 50 of about 270,968 (216)
Mantle pseudo-isochrons revisited [PDF]
The 2.0 Ga pseudo-isochron age inferred from the mid-ocean ridge basalt 207Pb/204Pb against 206Pb/204Pb diagram is reexamined on the basis of a statistical box model of mantle processes.
Rudge, J. F.
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A sequential data assimilation approach for the joint reconstruction of mantle convection and surface tectonics [PDF]
, 2015 International audienceWith the progress of mantle convection modelling over the last decade, it now becomes possible to solve for the dynamics of the interior flow and the surface tectonics to first order.
Bocher, M +3 more
core +1 more source
Anisotropic Convection Model for the Earth’s Mantle [PDF]
, 2003 The paper presents a theory for modeling flow in anisotropic, viscous rock. This theory has originally been developed for the simulation of large deformation processes including the folding and kinking of multi-layered visco-elastic rock (Muhlhaus et al. [1,2]). The orientation of slip planes in the context of crystallographic slip is determined by the
Hans-B. Mühlhaus, M. Cada, Louis Moresi
openaire +5 more sources
Europa's Ocean Translates Interior Tidal Heating Patterns to the Ice‐Ocean Boundary
AGU Advances, 2023 The circulation in Europa's ocean determines the degree of thermal, mechanical and chemical coupling between the ice shell and the silicate mantle. Using global direct numerical simulations, we investigate the effect of heterogeneous tidal heating in the
D. G. Lemasquerier +2 more
doaj +1 more source
Geological Journal, EarlyView.Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos +6 more
wiley +1 more source
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
Small, EarlyView.A bias‐free photovoltaic‐photoelectrochemical tandem system enables simultaneous methane and glycerol upgrading to formic acid under ambient conditions. The cathode generates hydrogen peroxide for methane oxidation, while the photoanode efficiently oxidizes glycerol.
Ho Kun Woo +5 more
wiley +1 more source
, 2021 The convective motion of material in Earth's mantle, powered by heat from the deep interior of our planet, drives plate tectonics at the surface, generating earthquakes and volcanic activity. It shapes our familiar surface landscapes, and also stabilizes
Padovan, Sebastiano +3 more
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Global patterns in Earth's dynamic topography since the Jurassic: the role of subducted slabs [PDF]
Solid 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
Journal of Vinyl and Additive Technology, Volume 31, Issue 2, Page 441-452, March 2025.Three poly(caprolactone) (PCL)‐based additives of differing molecular weights were used as a secondary plasticizer to prevent gas checks in PVC films produced through calendering. Results showed that chemical and physicochemical properties influence the prevention or reduction of gas checks, unlike rheological properties including complex viscosity and
Luis F. Alvarez +4 more
wiley +1 more source