Results 81 to 90 of about 24,714 (224)
Geophysical Research Letters, 2019 Numerical experiments of thermochemical mantle convection in 2‐D spherical annulus geometry are performed to investigate the effects of compositional viscosity ratio (ΔηC) on the long‐term evolution of reservoirs of dense, primordial material in the ...
Yang Li +5 more
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MANTLE CONVECTION FOR GEOLOGISTS [PDF]
American Mineralogist, 2014 By Geoffrey F. Davies (2011) Cambridge University Press, U.K., 232 p. $64.00 ISBN 978-0-521-19800-4 (Hardback; e-formats available). Since the plate tectonics model was advanced in the 1960s, mantle convection has been recognized to be at the heart of various activities of the solid Earth like volcanism, continental drift, mountain building, and ...
openaire +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.Abstract Ribbon collision is a process that can rapidly disturb the symmetry of subduction zones. Previous studies have demonstrated how ribbon collision causes rotation at the surface and contortion in the slab, but have only focused on the surface kinematics.
Andres Rodriguez‐Corcho +4 more
wiley +1 more source
Solid-state mantle convection coupled with a crystallising basal magma ocean
Comptes Rendus. GéoscienceFractional crystallisation of a basal magma ocean (BMO) has been proposed to explain the formation of large scale compositional variations in the mantle and the persistence of partially molten patches in the lowermost mantle. We present a complete set of
Labrosse, Stéphane +2 more
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Driving forces: Slab subduction and mantle convection [PDF]
Mantle convection is the mechanism ultimately responsible for most geological activity at Earth's surface. To zeroth order, the lithosphere is the cold outer thermal boundary layer of the convecting mantle.
Hager, Bradford H.
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Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract The Appalachian‐Caledonian orogen was built during the Paleozoic by accretion of peri‐Gondwanan terranes onto Laurentia, culminating in the formation of Pangea. During the Mesozoic, Pangea broke apart, displacing one section of the belt to eastern North America and another to northwestern Europe.
Roberto Masis +4 more
wiley +1 more source
Geochemistry, Geophysics, GeosystemsSubduction zones are fundamental features of Earth's mantle convection and plate tectonics, but mantle flow and pressure around slabs are poorly understood because of the lack of direct observational constraints on subsurface flow.
Samuel L. Goldberg, Adam F. Holt
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HeliyonThis study examines the Rayleigh-Bénard convection model with free slip boundary conditions appropriate for the Earth's mantle in narrow and elongated cells with aspect ratios of 1:2 and 2:1, respectively.
Tania S. Khaleque +2 more
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Modeling Geoid and Dynamic Topography From Tomography‐Based Thermo‐Chemical Mantle Convection
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract Mantle convection causes the most important contribution to the geoid and dynamic topography. With mantle density inferred from high‐resolution tomography models and numerical methods solving the governing equations of viscous mantle flow, the modeled geoid can fit the observations well.
Ronghua Cui +2 more
wiley +1 more source
Edge‐modulated stagnant‐lid convection and volcanic passive margins
Geochemistry, Geophysics, Geosystems, 2007 The initial oceanic crust along volcanic passive margins is a factor of ∼3 greater than that of typical oceanic crust (20 versus 6–7 km). Convection driven by the edge of the continental lithosphere may cause mantle material to circulate through the ...
Norman H. Sleep
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