Methane plume observations on Mars: Difference between revisions

However, sometimes abiotic methane can have carbon 13 depleted to as low as -50%, for instance in hydrothermal vents. <ref>

McDermott, Jill M., Jeffrey S. Seewald, Christopher R. German, and Sean P. Sylva. [http://www.pnas.org/content/pnas/112/25/7668.full.pdf "Pathways for abiotic organic synthesis at submarine hydrothermal fields."] Proceedings of the National Academy of Sciences 112, no. 25 (2015): 7668-7672.</ref>