Tomohiko SATO last update : 2011/10/1 [Japanese]

Graduate student
Department of Earth Science & Astronomy, The University of Tokyo
Mail: tomohiko @

The theme of my study is the environmental change and the animal evolution around the Precambrian-Cambrian boundary (ca. 542 million years ago). Now, I'm focusing on the late Neoproterozoic to the Early Cambrian sedimentary rocks; deep-sea chert in Wales, UK and phosphorite in Yunnan, South China.

Fig. 1. Schematic diagram showing the secular change of relative redox condition in deep ocean in the late Neoproterozoic and Phanerozoic (Sato, Isozaki & Matsuo, 2009).

Fig. 2. The outcrop of the Early Cambrian phosphorite bed in Yunnan, South China.


Sato, T., Isozaki, Y., Shozugawa, K., Seimiya, K., Matsuo, M., in press
57Fe Moessbauer analysis of the Upper Triassic-Lower Jurassic deep-sea chert: Paleo-redox history across the Triassic-Jurassic boundary and the Toarcian Oceanic Anoxic Event. Hyperfine Interactions.

Sato, T., Isozaki, Y., Shozugawa, K., Matsuo, M., 2011
57Fe Moessbauer spectroscopic analysis of deep-sea pelagic chert: Effect of secondary alteration with respect to paleo-redox evaluation. Journal of Asian Earth Sciences, 42, 1403-1410.

T. Sato, Y. Isozaki & M. Matsuo, 2009
Redox conditions of the deep ocean in the late Neoproterozoic-Early Paleozoic: 57Fe Moessbauer spectroscopic study on deep-sea pelagic chert. The Journal of the Geological Society of Japan, 115, 391-399 (in Japanese with English abstract).


2008. 09. International Symposium of "From Genome to Snowball Earth, Metazoan Evolution and Habitable Planets: Multidisciplinary Relations" (poster).

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