Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land

Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land

Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O. Recent computation modeling has suggested that a...

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Main Author: Premović Pavle I.
Format: Article
Language:English
Published: Serbian Chemical Society 2003-01-01
Series:Journal of the Serbian Chemical Society
Subjects:
oxygen
atmosphere
thermochemistry
photochemistry
earth
asteroid
impact
Online Access:http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390302097P.pdf
id doaj-471a2646737349af8065b652d320e99b
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spelling doaj-471a2646737349af8065b652d320e99b2020-12-24T12:10:42ZengSerbian Chemical Society Journal of the Serbian Chemical Society0352-51391820-74212003-01-016829710710.2298/JSC0302097P0352-51390302097PThermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on landPremović Pavle I.0Laboratory for Geochemistry, Cosmochemistry and Astrochemistry, University of Niš, P. O. Box 91, YU-18000 Niš, Serbia, YugoslaviaEarth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O. Recent computation modeling has suggested that a superheated (ca. 2000 K) H2O vapor atmosphere of 1.4x1021 kg (the present mass of the oceans) lasting for about 3000 y could probably have been formed on Earth by an enormous (ca. 1028 J) asteroid impact. In this report, the occurrence of the thermochemical dissociation of the vapor, creating a primitive oxygenic (ca. 0.1 of the present level (PAL) of free O2) atmosphere.http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390302097P.pdfoxygenatmospherethermochemistryphotochemistryearthasteroidimpact
collection DOAJ
language English
format Article
sources DOAJ
author Premović Pavle I.
spellingShingle Premović Pavle I.
Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
Journal of the Serbian Chemical Society
oxygen
atmosphere
thermochemistry
photochemistry
earth
asteroid
impact
author_facet Premović Pavle I.
author_sort Premović Pavle I.
title Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
title_short Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
title_full Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
title_fullStr Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
title_full_unstemmed Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impact on land
title_sort thermochemical equilibrium calculations of high-temperature o2 generation on the early earth: giant asteroid impact on land
publisher Serbian Chemical Society
series Journal of the Serbian Chemical Society
issn 0352-5139
1820-7421
publishDate 2003-01-01
description Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O. Recent computation modeling has suggested that a superheated (ca. 2000 K) H2O vapor atmosphere of 1.4x1021 kg (the present mass of the oceans) lasting for about 3000 y could probably have been formed on Earth by an enormous (ca. 1028 J) asteroid impact. In this report, the occurrence of the thermochemical dissociation of the vapor, creating a primitive oxygenic (ca. 0.1 of the present level (PAL) of free O2) atmosphere.
topic oxygen
atmosphere
thermochemistry
photochemistry
earth
asteroid
impact
url http://www.doiserbia.nb.rs/img/doi/0352-5139/2003/0352-51390302097P.pdf
work_keys_str_mv AT premovicpavlei thermochemicalequilibriumcalculationsofhightemperatureo2generationontheearlyearthgiantasteroidimpactonland
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