Since 3 Ma, however, xenoliths from the upper mantle contain spinel peridotite whose pressure-temperature conditions follow an asthenospheric adiabat. Thus, several authors, beginning with Ducea and Saleeby, have inferred removal of the ecslogitic and cooler peridotitic layers. Elegant theory by ...
V. Yarmolyuk.Average composition of basic magmas and mantle sources of island arcs and active continental margins estimated from the data on melt inclusions and quenched glasses of rocks[J]. Petrology .2010(1)Kovalenko V I, Naumov V A, Girnis V A, et al. Average composition of basic ...
a闪存芯片价格平稳 库存回补需求升温 Dodges saves the chip price to keep in stock steadily makes up the demand elevation of temperature[translate] a苦心人 Diligent person[translate] aIt's nine o'clock 它是九时[translate] a是否有最小生产批量 Whether has the most small-scale production batch[tran...
The oxygen vacancy ordering process in the system CaTiO3-CaFeO2.5 has been studied as a function of composition and temperature. The samples (CaTi1x Fe x O... A.I.Becerro,C.McCammon,F.Langenhorst,... - 《Phase Transitions》 被引量: 71发表: 1999年 Subsolidus phase relations and perov...
Both the hydrous phases and the limited diffusive equilibration of SiC with most minerals in the rocks indicate temperatures below 700-800 degrees C. Moissanite from mantle environments is hence a mineral that does not inform on pressure but on a low to moderate temperature environment involving ...
Our results suggest that mantle viscosity is primarily controlled by temperature, whereas grain size has a minor effect compared to the effect of temperature. We attribute two primary reasons for this: First, the bridgmanite-ferropericlase growth is very slow in the lower mantle and the grain ...
The value of the power law exponent, n, and the strength of the lithosphere depend on: the depth and stress difference at the brittle-ductile transition, the temperature at the Moho, and the geothermal gradient. In the range of vertically-integrated stress between 10 12 and 10 13 N m ...
lower mantleThe temperature-dependent local structure (<2nm) of neighborite (NaMgF3) is probed through least-squares refinement of structure models fit to the pair distribution function [G(r)] derived from the total high-energy X-ray scattering of sample powders. In contrast to previous ...
Magmas with 3–4 wt% \\{H2O\\} can be generated at ∼50° below the dry solidus for a wide range in F and H2O(o). The narrow range in wedge temperatures may be another manifestation of a planet with average upper mantle of 1400 °C potential temperature. The characteristic ...
We analyzed global properties, radial profiles, and 2D maps of the metal abundances and temperature in the cool core cluster of galaxies Hydra A using a de... A Simionescu,N Werner,H Böhringer,... - 《Astronomy & Astrophysics》 被引量: 97发表: 2008年 The Metallicity Distribution Function...