Results 101 to 110 of about 15,904 (206)
Evidence for a dominantly reducing Archaean ambient mantle from two redox proxies, and low oxygen fugacity of deeply subducted oceanic crust. [PDF]
Sci Rep, 2019 Aulbach S +5 more
europepmc +1 more source
Meteoritic basalts: The nakhlites, their parental magmas, cooling rates, and equivalents on Earth [PDF]
Field study in northern Ontario was planned to compare cumulate rocks reported in the literature with the nakhlites in order to study the crystallization rates of the nakhlites and their possible geological settings.
Treiman, Allan H.
core +1 more source
All EarthExperimental petrology provides a direct means of constraining mineral phase stability and primary magma compositions across a wide range of pressure – temperature (P-T) conditions.
Caroline D. K. Tolotti +1 more
doaj +1 more source
Investigation of critical burning of fuel droplets [PDF]
The steady combustion characteristics of droplets were considered in combustion chamber environments at various pressures, flow conditions, and ambient oxidizer concentrations for a number of hydrocarbon fuels.
Chanin, S., Faeth, G. M.
core +1 more source
Electrical conductivity of carbonaceous chondrites and electric heating of meteorite parent bodies [PDF]
The electrical conductivity of samples of the Murchison and Allende carbonaceous chondrites is 4 to 6 magnitudes greater than rock forming minerals such as Olivine up to 700 C. The remarkably high electrical conductivity of these meteorites is attributed
Duba, A.
core +1 more source
Electrolytic smelting of lunar rock for oxygen, iron, and silicon [PDF]
Preliminary studies of the electrochemical properties of silicate melts such as those available from heating of lunar mare soils indicate that conductivities are high enough for design of a practical electrolytic cell.
Colson, Russell O. +4 more
core +1 more source
Mixed-valence iron minerals on Venus: Fe(2+)-Fe(3+) oxides and oxy-silicates formed by surface-atmosphere interactions [PDF]
Inferences from these investigations are that Fe(3+)-bearing minerals such as hematite magnesioferrite, acmite, and epidote are thermodynamically unstable, and that magnetite is the predominant mixed-valence iron oxide mineral on venus.
Burns, Roger G., Straub, Darcy W.
core +1 more source
Effect of Oxygen Fugacity on Fassaitic Pyroxene
Effect of Oxygen Fugacity on Fassaitic PyroxeneStability of fassaitic pyroxene in the system CaMgSi2O6-CaFeAlSiO6-CaAl2SiO6-CaTiAl2O6 is discussed on the basis of published data. In the system CaMgSi2O6-CaFeAlSiO6 the stability field of clinopyroxene decreases with an increase in CaFeAlSiO6 content and a decrease in oxygen fugacity at constant temperature.
openaire
The Mantle Fe<sup>3+</sup>/ΣFe Ratio Has Doubled Since the Early Archean. [PDF]
Nat CommunZhu XX +4 more
europepmc +1 more source