In Situ Chemical Speciation Analysis of Nitrogen and Sulfur in Carbonates Indicating the Reduced Surface Environment of Ancient Mars

Tomohiro Usui1, Ryoichi Nakada2, Mizuho Koike3, Mizuho Koike1, Iori Kajitani1 and Ramses Ramirez4, (1)JAXA, Sagamihara, Japan, (2)Kochi/JAMSTEC, Nankoku, Japan, (3)Atmosphere & Ocean Research institute, the University of Tokyo, Chiba, Japan, (4)Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan