[B-CG04] Decoding the history of the Earth-like planets: From their birth to the present

[BCG04-10] Nitrogen isotope evidence for biogenic nitrogen fixation in the Early Archean

★Invited Papers

*Kohei Sasaki¹, Akizumi Ishida², Takeshi Kakegawa³, Kenichiro Sugitani⁴, Ko Hashizume⁵, Naoto Takahata¹ (1. Atmosphere and Ocean research Institute, University of Tokyo, 2. Department of Earth Science, Chiba University, 3. Department of Earth Science, Tohoku University, 4. Department of Earth and Environmental Sciences, Nagoya University, 5. Department of Science, Ibaraki University)

Keywords:Archean, Nitrogen isotope, stepwise combustion method, Nitrogen fixation