Like the outer core, this compositional layer of the Earth is made up of metal. Unlike the outer core, however, it's solid metal. The inner core is composed almost completely of iron, but around 10 percent of it is thought to be sulfur, nickel or oxygen. It's 1,200 kilometers (750...
Geochemical observations and one layer mantle convection. Earth Planet. Sci. Lett. 174, 125–137 (1999). Article Google Scholar Jones, R. E. et al. Origins of the terrestrial Hf–Nd mantle array: evidence from a combined geodynamical–geochemical approach. Earth Planet. Sci. Lett. 518,...
to diffusion-based profiles.The best-fitting diffusion profile is for a layer, 186卤20km thick.Core diffusion coefficients (D) may be seismically estimated.Hard-sphere liquid theory adequately explains the estimated D values.The layer may be a remnant of an early impact that formed the Earth.do...
There may exist a discontinuous interface beneath the Sichuan Basin, with the saturated lower layer thicker than the refractory upper layer. As a result, the lithospheric mantle of the Sichuan Basin and surrounding regions is mainly composed of saturated and transitional peridotite....
In general, inclusion compositions were uniform and similar to the host glass, indicating that with the isothermal times required for most inclusions to form, a boundary layer was not entrapped that could be detected within the limits of our analyses. 展开 ...
(MCD43A1) employing the Ross-Thick (volumetric) and Li-Sparse-Reciprocal (geometric-optical) kernels, whose combination characterizes scenes featuring a dense vegetation layer in the canopy and a sparsely distributed arrangement of stems on the horizontal plane (Lucht et al., 2000; Roujean et al...
Production of peroxy radicals at night via reactions of ozone and the nitrate radical in the marine boundary layer In this paper, a substantial set of simultaneous measurements of the sum of peroxy radicals, [HO+ RO], NO, hydrocarbons (HCs), and ozone, taken at Mace Hea......
The basin ejecta units are largely uniform in composition with the inner, Montes Rook Formation being slightly more mafic than the outer, Hevelius Formation. The Inner and Outer Rook mountains display many outcrops of pure anorthosite. These and other findings are consistent with a three layer ...
F Characteristic microstructure for the carbonate-rich sandy facies: Overview shot of a quartz-rich, carbonate cemented layer, including fossil shells, sparry calcite fragments (cc), dark pyrite grains (pyr) and stylolites; sample 19Mt0052 Full size image The base of the first carbonate layer ...
Recent upward revisions of the thermal conductivity of the core to 130–200 W m−1 K−1 indicate a larger adiabatic heat flow of 13–16 TW and larger values of Qcmb to avoid a deep stratified layer. Larger values of Qcmb lead to younger inner core nucleation ages of ∼0.7 Ga (...