Origin of precursors of organic molecules during evaporation of meteorites and mafic terrestrial rocks

Details Origin of precursors of organic molecules during evaporation of meteorites and mafic terrestrial rocks Origin of precursors of organic molecules during evaporation of meteorites and mafic terrestrial rocks

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.340...46m&link_type=abstract

Nature (ISSN 0028-0836), vol. 340, July 6, 1989, p. 46-48.

Computer Science

41

Abiogenesis, Chemical Evolution, Meteorites, Organic Compounds, Rocks, Chemical Composition, Evaporation, Gas Mixtures, Hydrocarbons, Hydrocyanic Acid, Impact, Laser Heating, Silicates, Meteorites, Organic Material, Parent Molecules, Origin, Formation, Gases, Evaporation, Laboratory Studies, Simulations, Experiments, Vaporization, Composition, Earth, Impacts, Silicates, Aldehyde, Hydrocarbons, Diagrams, Atmosphere, Devolatilization, Equipment, Hydrogen Cyanide, Abundance, Samples, Meteorite

Scientific paper

The effects of laser-pulse heating on meteorite materials and silicates is studied in order to simulate the vaporization which occurs during impacts and to study the chemical composition of the gases produced. The residual gas mixture consisted of both oxidized and reduced components. The composition of the gas mixtures is found to be qualitatively similar for all samples. The data give an idea of the chemical composition of gases that may have been released into the earth's early atmosphere by impact devolatilization. Weights percent of about 0.001 for HCN, about 0.0001 for CH3CHO, and about 0.01 for hydrocarbons were measured for the experimental gas mixtures. Impact vaporization is no less effective for the formation of HCN than is the formation of HCN by impact reprocessing of the atmosphere. For the production of aldehyde and hydrocarbons, impact vaporization is even more effective. The gas mixtures formed by vaporization of silicates provide favorable conditions for abiotic synthesis of organic compounds.

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