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Journal articles
Nitrogen Isotopic Composition and Density of the Archean Atmosphere
Abstract : Understanding the atmosphere's composition during the Archean eon is a fundamental issue to unravel ancient environmental conditions. We show from the analysis of nitrogen and argon isotopes in fluid inclusions trapped in 3.0-3.5 Ga hydrothermal quartz that the PN2 of the Archean atmosphere was lower than 1.1 bar, possibly as low as 0.5 bar, and had a nitrogen isotopic composition comparable to the present-day one. These results imply that dinitrogen did not play a significant role in the thermal budget of the ancient Earth and that the Archean PCO2 was probably lower than 0.7 bar.
Cited literature [18 references]
https://hal.archives-ouvertes.fr/hal-01346331
Contributor : Bernard Marty <>
Submitted on : Friday, July 22, 2016 - 11:00:04 AM
Last modification on : Thursday, February 25, 2021 - 9:46:09 AM
Contributor : Bernard Marty <>
Submitted on : Friday, July 22, 2016 - 11:00:04 AM
Last modification on : Thursday, February 25, 2021 - 9:46:09 AM
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1240971-R5-2.pdf
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