Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8910726 | Geochimica et Cosmochimica Acta | 2018 | 19 Pages |
Abstract
For 3.3â¯Ga-old samples, Ar-N2 correlations are consistent with a partial pressure of nitrogen (pN2) in the Archean atmosphere similar to, or lower than, the modern one, thus requiring other processes than a high pN2 to keep the Earth's surface warm despite a fainter Sun. The nitrogen isotope composition of the atmosphere at 3.3â¯Ga was already modern-like, attesting to inefficient nitrogen escape to space since that time.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
G. Avice, B. Marty, R. Burgess, A. Hofmann, P. Philippot, K. Zahnle, D. Zakharov,