Science news articles about 'lower mantle'

... bound to each other. Earlier experiments by Lin and others had found evidence for areas in the lower mantle in which electrons were either mostly paired up or were mostly unpaired. This was the first ...

... Sujoy Mukhopadhyay, a Harvard geochemist, developed a model that could reconcile convection involving the lower mantle with the helium-3 measurements found in ocean island basalts. The model suggests ...

... that the deepest mantle is complex and significantly more anomalous than the rest of the lower mantle. To understand this region, seismologists analyze tomographic images constructed from seismic wave ...

... , issue of Nature, call into question current models of mantle dynamics. Lead author of the study Alexander Goncharov explains: "The lower mantle sits on top of the core where pressures range ...

... report unexpected properties of ferropericlase, which is presumably the second most abundant mineral of the lower mantle. "The dependence of wave velocity on direction increases significantly at a ...

... moment when these theoretical predictions are verified one day in geological samples that have been generated from the lower mantle, Yin said. But the logical next step for him and Rustad to take, he ...

... by the Earth's rotation and temperature differences between the inner core's outer layers and the lower mantle. The researchers obtained magnetic measurements from a thick stack of lava flows in ...