Non‐adiabaticity in mantle convection [PDF]
Geophysical Research Letters, 2001 Seismic observations indicate that Earth's lower mantle is homogeneous as revealed by smooth depth variations of the bulk sound velocity and Bullen's inhomogeneity parameter η being close to one. Here we show with 3D spherical convection simulations that it should also be non‐adiabatic because a significant proportion of mantle heat sources is internal.
Bunge, H.-P., Ricard, Y., Matas, J.
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Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary [PDF]
, 2007 Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick; id_orcid +7 more
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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
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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
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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
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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
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Shear-induced material transfer across the core-mantle boundary aided by the post-perovskite phase transition [PDF]
, 2005 We present a novel mechanical model for the extraction of outer core material upwards across the CMB into the mantle side region of D" and subsequent interaction with the post-perovskite (ppv) phase transition.
Brodholt, John +6 more
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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
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Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]
, 1996 We relax the steady-motions theorem by solving for a steady velocity field at the surface of the core in a frame of reference drifting at a linear rate with respect to an observer fixed in the mantle frame of reference.
Whaler, Kathy; id_orcid, Davis, R. G.
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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
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