Results 21 to 30 of about 1,123,502 (206)
Geologia Croatica, 2016 The Trepča Pb-Zn-Ag skarn deposit in Kosovo is spatially and temporarily related to the phreatomagmatic breccia of Oligocene age (~23 Ma). The deposit shows features typical for skarn deposits worldwide, including a stage of isochemical metamorphism, a ...
Sabina Strmić Palinkaš +6 more
doaj +1 more source
A magma ocean origin to divergent redox evolutions of rocky planetary bodies and early atmospheres
Nature Communications, 2020 Applying first-principles molecular dynamic simulations and thermodynamic modelling, the authors suggest a vertical oxygen fugacity gradient in magma oceans of Earth, Mars, and the Moon.
Jie Deng +4 more
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Anais da Academia Brasileira de Ciências, 2014 Subduction zone or arc magmas are known to display a characteristic depletion of High Field Strength Elements (HFSE) relative to other similarly incompatible elements, which can be attributed to the presence of the accessory mineral rutile (TiO2) in the ...
GUILHERME MALLMANN +2 more
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Geochemistry, Geophysics, Geosystems, 2023 The behavior of Fe3+ during mantle partial melting strongly influences the oxidation state of the resulting magmas, with implications for the evolution of the atmosphere's oxidation state.
Yves Moussallam +7 more
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The solubility and oxidation state of nickel in silicate melt at low oxygen fugacities: Results using a mechanically assisted equilibration technique [PDF]
, 1994 The solubility of Ni in a silicate melt has been measured using a new, mechanically assisted equilibration technique over a wide range of controlled ƒO2 values.
Spettel, Bernhard +3 more
core +1 more source
Frontiers in Earth Science, 2020 Large volcanic eruptions are frequently triggered by the intrusion of hot primitive magma into a more evolved magma-chamber or -mush zone. During intrusion into the cooler mush zone, the basaltic magma undergoes crystallization, which in turn can release
Stephan Kolzenburg +5 more
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Upper mantle oxygen fugacity recorded by spinel lherzolites
Nature, 1986 The oxygen fugacities ( ) recorded by rocks from the Earth's upper mantle have been the subject of much recent study and controversy1–7. Discussion has been stimulated by reported differences of several orders of magnitude between measurements made by different methods (Fig.
Mattioli, G, Wood, B
openaire +2 more sources
Oxygen fugacity evolution of the mantle lithosphere beneath the North China Craton
, 2021 Oxygen fugacity controls the behaviour of multivalent elements and compositions of C-O-H fluids in Earth’s mantle, which further affects the cycling of materials between the deep interior and surface of Earth. The redox state of the mantle lithosphere of
Ji-Feng Ying (7355513) +4 more
core +1 more source
Scientific Reports, 2017 We present the first oxygen fugacity (fO2) profile through the cratonic lithospheric mantle under the Panda kimberlite (Ekati Diamond Mine) in the Lac de Gras kimberlite field, central Slave Craton, northern Canada.
G. M. Yaxley +4 more
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Journal of Economic Geology, 2017 Introduction Mineral composition is sensitive to variations in the composition of the magma and can be used to characterize the physical conditions of crystallization such as temperature, pressure, oxygen fugacity and water content.
Fatemeh Sarjoughian
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