Mars Had Oxygen-Rich Atmosphere Four Billion Years Ago (The oxygen was either produced by life forms or by a chemical reaction in the atmosphere of Mars) The Guardian (Associated Press) June 19, 2013 http://www.guardian.co.uk/science/2013/jun/19/mars-oxygen-rich-atmosphere
Mars Had Oxygen-Rich Atmosphere 4,000 Million Years Ago, Science Daily, June 19, 2013 http://www.sciencedaily.com/releases/2013/06/130619132446.htm The paper is: Tuff, J., J. Wade, and B. J. Wood, 2013, Volcanism on Mars controlled by early oxidation of the upper mantle. Nature, vol. 498, no. 7454, pp. 342-345. DOI: 10.1038/nature12225 http://www.nature.com/nature/journal/v498/n7454/full/nature12225.html Yours, Paul H. ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
