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Between a rock and a hot place: the core–mantle boundary
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008The boundary between the rocky mantle and iron core, almost 2900 km below the surface, is physically the most significant in the Earth's interior. It may be the terminus for subducted surface material, the source of mantle plumes and a control on the Earth's magnetic field.
Wookey, J, Dobson, David P
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The power balance at the core–mantle boundary
Physics of the Earth and Planetary Interiors, 2002The power () required by the mantle from the core, previously thought to be about 2.3 TW, is shown to be about 8 TW. Mantle heat transfer mechanisms near the core–mantle boundary (CMB) called sinks control power input into the mantle. The sinks are mechanisms for: heating the slab at the base of the mantle sufficiently to equilibrate its temperature ...
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Reaction of iron and silica at core–mantle boundary conditions
Physics of the Earth and Planetary Interiors, 2004Abstract Chemical interaction between iron and silica have been studied at pressures up to 140 GPa and temperatures over 3800 K in electrically- and laser-heated diamond anvil cells and in multianvil apparatus. At pressures below 55–60 GPa and high temperatures, iron and silica react to form iron oxide and iron–silicon alloy with up to 5 wt.% Si ...
Dubrovinsky, L. +7 more
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An α-effect on the core mantle boundary
Geophysical & Astrophysical Fluid Dynamics, 1991Abstract A boundary α-effect based on the reflection of hydromagnetic waves from the core-mantle boundary is studied in a simple plane model. The main features of this α-effect, namely: the concentration near the boundary, the change of sign of α in the layer, enhanced values of α and geometrical behavior, are in good agreement with those assumed by ...
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Instability of a reaction zone at the core-mantle boundary (CMB)
Earth, Moon, and Planets, 1994The core-mantle reaction proceeds on two scales: the short-scale chemical reaction leading to local equilibrium and the large-scale dispersal of reaction products. The second process is connected with a growth of the CMB-radius and may be described with application of the diffusion equation. The departure from a stationary interface is calculated using
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