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Geomagnetic spikes on the core-mantle boundary [PDF]
Nature Communications, 2017 Rapid and spatially localized geomagnetic field variations around 1000 BC are hard to reconcile with expected field behaviour arising from the core dynamo.
Christopher Davies, Catherine Constable
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A diamond-bearing core-mantle boundary on Mercury [PDF]
Nature CommunicationsAbundant carbon was identified on Mercury by MESSENGER, which is interpreted as the remnant of a primordial graphite flotation crust, suggesting that the magma ocean and core were saturated in carbon.
Yongjiang Xu +5 more
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The emerging picture of a complex core-mantle boundary [PDF]
Nature CommunicationsRecent seismological studies challenge the traditional view that the interface between the core and mantle is a straightforward discontinuity. As seismology is pushed to its observational limits, a complex - potentially compositionally layered - region ...
Stuart Russell +3 more
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Water transport to the core-mantle boundary. [PDF]
Natl Sci Rev, 2021 Abstract Water is transported to Earth's interior in lithospheric slabs at subduction zones. Shallow dehydration fuels hydrous island arc magmatism but some water is transported deeper in cool slab mantle. Further dehydration at ∼700 km may limit deeper transport but hydrated phases in slab crust have considerable capacity for ...
Walter MJ.
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Kilometer-scale structure on the core–mantle boundary near Hawaii [PDF]
Nature Communications, 2022 A new paper constrains a high-resolution ultra-low velocity zone (ULVZ) structure at the base of the Hawaiian mantle. The authors further propose this to be a chemically distinct ULVZ with increasing iron content towards the core mantle boundary.
Zhi Li +3 more
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Mantle Electrical Conductivity and the Magnetic Field at the Core–Mantle Boundary
Fluids, 2021 The Earth’s magnetic field is measured on and above the crust, while the turbulent dynamo in the outer core produces magnetic field values at the core–mantle boundary (CMB).
John V. Shebalin
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Synthesis of heavy hydrocarbons at the core-mantle boundary. [PDF]
Sci Rep, 2015 AbstractThe synthesis of complex organic molecules with C-C bonds is possible under conditions of reduced activity of oxygen. We have found performing ab initio molecular dynamics simulations of the C-O-H-Fe system that such conditions exist at the core-mantle boundary (CMB).
Belonoshko AB +4 more
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Extensive iron–water exchange at Earth’s core–mantle boundary can explain seismic anomalies [PDF]
Nature CommunicationsSeismological observations indicate the presence of chemical heterogeneities at the lowermost mantle, just above the core–mantle boundary (CMB), sparking debate over their origins.
Katsutoshi Kawano +5 more
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Reactive formation of magnesiowüstite at the lunar core-mantle boundary [PDF]
Nature CommunicationsSeismological and geodetic data indicate that the lunar core-mantle boundary (CMB) exhibits a well-defined low-velocity zone (LVZ) with a combination of anomalous seismic velocities and density that remain unexplained.
Qianzhi Xu +12 more
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Deep mantle anomalies block early Earth melting, challenging a primordial origin [PDF]
Scientific ReportsEarth’s deep mantle hosts enigmatic structures known as Large Low Velocity Provinces (LLVPs), which sit atop the core–mantle boundary and influence mantle dynamics and plume generation.
Arnab Roy +2 more
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