![Does aspartic acid racemization constrain the depth limit of the subsurface biosphere?]()
Does aspartic acid racemization constrain the depth limit of the subsurface biosphere?Onstott, T. C.; Magnabosco, C.; Aubrey, A. D.; Burton, A. S.; Dworkin, J. P.; Elsila, J. E.; Grunsfeld, S.; Cao, B. H.; Hein, J. E.; Glavin, D. P.; Kieft, T. L.; Silver, B. J.; Phelps, T. J.; van Heerden, E.; Opperman, D. J.; Bada, J. L. · Geobiology · 2014