FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2923654300> ?p ?o ?g. }

• W2923654300 endingPage "23" @default.
• W2923654300 startingPage "8" @default.
• W2923654300 abstract "This study presents an inventory of possible chemical reactions affecting, or having affected, the Venus surface. Fluid rock reactions are simulated using experiments under conditions close to the present surface. Slabs or powder of several natural and synthetic silicate material (crystalline fresh basalt, altered basalt, obsidian, pumice and basalt glass) were reacted at 475 °C in CO2-H2O-H2S-SO2-CO gas mixture. Most of the runs were carried out at roughly 90 bars with a duration of one week, some experiments having longer (one month) or shorter (one day) durations. The role of H2O content was explored through a wide range of water pressure: from dry gas for the current Venus conditions up to 590 bars (86%H2O) for early Venus (or other early terrestrial planets). The gas phase was sampled before the completion of the runs for chemical analysis of major gas components (CO, H2S, SO2) as well as trace elements possibly released by the rocks. The altered samples were examined by a suite of mineralogical and chemical techniques (scanning and transmission electron microscopy, X-ray diffraction and spectroscopy). In dry atmosphere, the redox potential of the gas was close to the Ni/NiO buffer (−21.3 to −27.3 log fO2), thus close to the current Venus conditions. The sample alteration is tenuous and limited to surface oxidation of glasses and coating of olivine by iron oxides, as well as the general deposition of (Ca,Na)SO4 at the sample surface. The oxidation of glass is reflected in the formation of magnesioferrite under the surface and is accompanied by the release of Ca, Mg and Na into the gas phase or mineralized as sulfate at the surface. In wet atmosphere, obsidian recrystallizes into a mixture of plagioclase and amphibole while basaltic glass produced non-expandable clays minerals: chlorite-type (2:1:1) at the surface and likely celadonite (2:1) below the surface. Olivine is preserved. Using obsidian (the most alterable material) as a proxy of aluminosilicates, we discuss the surface reactions operating under supercritical conditions, and we used a shrinking-core equation for modeling the long-term reactions. These parametric exploration offer new insights into processes having affected the surface of Venus and contribute to the discussion of open questions such as the fate of water or the lifetime of vitreous dust or fine grain material if present in the current or past Venusian environment. Longer duration experiments will provide more kinetic parameters that can be extrapolated to the geologic history of Venus." @default.
• W2923654300 created "2019-04-01" @default.
• W2923654300 creator A5009436682 @default.
• W2923654300 creator A5014270783 @default.
• W2923654300 creator A5015750948 @default.
• W2923654300 creator A5028035751 @default.
• W2923654300 creator A5032302332 @default.
• W2923654300 creator A5066859290 @default.
• W2923654300 creator A5077415808 @default.
• W2923654300 creator A5080332204 @default.
• W2923654300 date "2019-09-01" @default.
• W2923654300 modified "2023-10-15" @default.
• W2923654300 title "Experimental exploration of volcanic rocks-atmosphere interaction under Venus surface conditions" @default.
• W2923654300 cites W1978394667 @default.
• W2923654300 cites W1981118566 @default.
• W2923654300 cites W1981776713 @default.
• W2923654300 cites W1983740760 @default.
• W2923654300 cites W1987366414 @default.
• W2923654300 cites W1988908936 @default.
• W2923654300 cites W2001757038 @default.
• W2923654300 cites W2007593832 @default.
• W2923654300 cites W2007939487 @default.
• W2923654300 cites W2007967898 @default.
• W2923654300 cites W2012546967 @default.
• W2923654300 cites W2014399720 @default.
• W2923654300 cites W2017093495 @default.
• W2923654300 cites W2017240906 @default.
• W2923654300 cites W2019937345 @default.
• W2923654300 cites W2026566595 @default.
• W2923654300 cites W2031095798 @default.
• W2923654300 cites W2042173377 @default.
• W2923654300 cites W2042200783 @default.
• W2923654300 cites W2043414525 @default.
• W2923654300 cites W2043689993 @default.
• W2923654300 cites W2044647052 @default.
• W2923654300 cites W2056435673 @default.
• W2923654300 cites W2060486282 @default.
• W2923654300 cites W2064295643 @default.
• W2923654300 cites W2065562633 @default.
• W2923654300 cites W2066865701 @default.
• W2923654300 cites W2068918692 @default.
• W2923654300 cites W2074017226 @default.
• W2923654300 cites W2076793342 @default.
• W2923654300 cites W2080248507 @default.
• W2923654300 cites W2081550367 @default.
• W2923654300 cites W2088123814 @default.
• W2923654300 cites W2090227326 @default.
• W2923654300 cites W2090375997 @default.
• W2923654300 cites W2090575937 @default.
• W2923654300 cites W2107394938 @default.
• W2923654300 cites W2136144598 @default.
• W2923654300 cites W2142958528 @default.
• W2923654300 cites W2157883317 @default.
• W2923654300 cites W2174921444 @default.
• W2923654300 cites W2257238871 @default.
• W2923654300 cites W2470412187 @default.
• W2923654300 cites W2558205656 @default.
• W2923654300 cites W2736046424 @default.
• W2923654300 cites W2743101741 @default.
• W2923654300 cites W2899541742 @default.
• W2923654300 cites W2899750234 @default.
• W2923654300 cites W2900378930 @default.
• W2923654300 cites W2905197319 @default.
• W2923654300 cites W2905267632 @default.
• W2923654300 doi "https://doi.org/10.1016/j.icarus.2019.03.033" @default.
• W2923654300 hasPublicationYear "2019" @default.
• W2923654300 type Work @default.
• W2923654300 sameAs 2923654300 @default.
• W2923654300 citedByCount "36" @default.
• W2923654300 countsByYear W29236543002019 @default.
• W2923654300 countsByYear W29236543002020 @default.
• W2923654300 countsByYear W29236543002021 @default.
• W2923654300 countsByYear W29236543002022 @default.
• W2923654300 countsByYear W29236543002023 @default.
• W2923654300 crossrefType "journal-article" @default.
• W2923654300 hasAuthorship W2923654300A5009436682 @default.
• W2923654300 hasAuthorship W2923654300A5014270783 @default.
• W2923654300 hasAuthorship W2923654300A5015750948 @default.
• W2923654300 hasAuthorship W2923654300A5028035751 @default.
• W2923654300 hasAuthorship W2923654300A5032302332 @default.
• W2923654300 hasAuthorship W2923654300A5066859290 @default.
• W2923654300 hasAuthorship W2923654300A5077415808 @default.
• W2923654300 hasAuthorship W2923654300A5080332204 @default.
• W2923654300 hasBestOaLocation W29236543001 @default.
• W2923654300 hasConcept C120806208 @default.
• W2923654300 hasConcept C121332964 @default.
• W2923654300 hasConcept C127313418 @default.
• W2923654300 hasConcept C161509811 @default.
• W2923654300 hasConcept C17409809 @default.
• W2923654300 hasConcept C178790620 @default.
• W2923654300 hasConcept C185592680 @default.
• W2923654300 hasConcept C199289684 @default.
• W2923654300 hasConcept C2777335606 @default.
• W2923654300 hasConcept C2779900269 @default.
• W2923654300 hasConcept C2780364934 @default.
• W2923654300 hasConcept C2908550418 @default.
• W2923654300 hasConcept C65440619 @default.
• W2923654300 hasConcept C87355193 @default.

• next