Reply to the Comments of Kato and Isozaki on “Evaluation of palaeo-oxygenation of the ocean bottom across the Permian–Triassic boundary” by Y. Kakuwa [Global Planet. Change 63 (2008) 40–56]: Was the Late Permian deep-superocean really oxic?
aDepartment of Earth Science and Astronomy, Graduate School of Arts and Sciences, the University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan