Average structure of the crust and upper- mantle in East Africa, Tectonophysics, 20, 238-253.Mueller, St, & Bonjer, K., 1973. Average structure of the crust and upper mantle in East Africa, Tectono- phys., 20,28
How dense is the troposphere? Is sea level pressure the same as barometric pressure? What is the average ocean temperature? What is the pressure of the Earth's outer core? What is the pressure of the Earth's mantle? Is sea level pressure the same as air pressure? How much does air wei...
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 mean and range ...
From this analysis it is argued that these heat flow means are a reliable estimate of the flux at depth. In order to be able to use heat flow measurements to investigate the age of the crust, the thickness of the lithospheric plate, upper mantle convection, and local anomalies, it is ...
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 ...
Considered magmas demonstrate distinct positive correlation between MgO content and homogenization temperature, practically coinciding with that of MOR magmas. Modeling of phase equilibria revealed widening of crystallization field of olivine in the magmas of subduction zones compared to MOR magmas. This can...
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 ...
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 ...
BONJER,Average structure of the crust and upper mantle in East Africa, Tectonophysics, 20, 283-293, 1973.Mueller, S. and Bonjer, K. P. (1973), Average structure of the crust and upper mantle in East Africa , Tectonophysies 20 , 283....
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 ...