منابع مشابه
The carbon dioxide solubility in alkali basalts: an experimental study
Experiments were conducted to determine CO2 solubilities in alkali basalts from Vesuvius, Etna and Stromboli. The basaltic melts were equilibrated with nearly pure CO2 at 1200°C under oxidizing conditions, and at pressures ranging from 269 to 2060 bars. CO2 solubility was determined by FTIR measurements. The results show that alkalis have a strong effect on the CO2 solubility and confirm and re...
متن کاملDegassing of reduced carbon from planetary basalts.
Degassing of planetary interiors through surface volcanism plays an important role in the evolution of planetary bodies and atmospheres. On Earth, carbon dioxide and water are the primary volatile species in magmas. However, little is known about the speciation and degassing of carbon in magmas formed on other planets (i.e., Moon, Mars, Mercury), where the mantle oxidation state [oxygen fugacit...
متن کاملHeterogeneity in mantle carbon content from CO2-undersaturated basalts
The amount of carbon present in Earth's mantle affects the dynamics of melting, volcanic eruption style and the evolution of Earth's atmosphere via planetary outgassing. Mantle carbon concentrations are difficult to quantify because most magmas are strongly degassed upon eruption. Here we report undegassed carbon concentrations from a new set of olivine-hosted melt inclusions from the Mid-Atlan...
متن کاملAlkali basalts and enclosed ultramafic xenoliths near Ushuaia, Tierra Del Fuego, Argentina
At the southernmost part of Tierra del Fuego a few outcrops and erratic boulders of alkali basaltic rocks with ultramafic enclaves have been studied. Alkali basalt plugs or pipes hitherto identified are scarce, and host rocks are constituted by slates that belong to Mesozoic deposition. The petrography, texture and composition of the basalt and xenoliths were investigated by petrographic micros...
متن کاملA reduced organic carbon component in martian basalts.
The source and nature of carbon on Mars have been a subject of intense speculation. We report the results of confocal Raman imaging spectroscopy on 11 martian meteorites, spanning about 4.2 billion years of martian history. Ten of the meteorites contain abiotic macromolecular carbon (MMC) phases detected in association with small oxide grains included within high-temperature minerals. Polycycli...
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ژورنال
عنوان ژورنال: Solid Earth Sciences
سال: 2017
ISSN: 2451-912X
DOI: 10.1016/j.sesci.2017.03.002