Remnants of the early solar system water enriched in heavy oxygen isotopes

Sakamoto, Naoya; Seto, Yusuke; Itoh, Shoichi; Kuramoto, Kiyoshi; Fujino, Kiyoshi; Nagashima, Kazuhide; Krot, Alexander N.; Yurimoto, Hisayoshi

Remnants of the early solar system water enriched in heavy oxygen isotopes

Sakamoto, Naoya; Seto, Yusuke; Itoh, Shoichi et al.

Science, 2007, 317(5835), 231-233

Permalink : https://hdl.handle.net/2115/26443

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アクセス権	open access
URI	https://hdl.handle.net/2115/26443
タイトル	Remnants of the early solar system water enriched in heavy oxygen isotopes
著者	Sakamoto, Naoya ; Seto, Yusuke ; Itoh, Shoichi ; Kuramoto, Kiyoshi ; Fujino, Kiyoshi ; Nagashima, Kazuhide ; Krot, Alexander N. ; Yurimoto, Hisayoshi
著者名 Sakamoto, Naoya
著者名 Seto, Yusuke
e-Rad_Researcher 60397023 著者名 Itoh, Shoichi
著者名 Kuramoto, Kiyoshi
著者名 Fujino, Kiyoshi
著者名 Nagashima, Kazuhide
著者名 Krot, Alexander N.
著者名 Yurimoto, Hisayoshi
言語	英語
発行日	2007-07-13
出版者	American Association for the Advancement of Science
収録物名	Science
巻(号)	317(5835)
ページ	231-233
抄録	Oxygen isotopic composition of our solar system is believed to have resulted from mixing of two isotopically distinct nebular reservoirs, 16O-rich and 17,18O-rich relative to Earth. The nature and composition of the 17,18O-rich reservoir are poorly constrained. We report an in situ discovery of a chemically and isotopically unique material distributed ubiquitously in fine-grained matrix of a primitive carbonaceous chondrite Acfer 094. This material formed by oxidation of Fe,Ni-metal and sulfides by water either in the solar nebula or on a planetesimal. Oxygen isotopic composition of this material indicates that the water was highly enriched in 17O and 18O (δ17,18OSMOW = +180‰ per mil), providing the first evidence for an extremely 17,18O-rich reservoir in the early solar system.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in SCIENCE, VOL 317, 2007-7-13, doi:10.1126/science.1142021
PISSN	0036-8075
EISSN	1095-9203
関連情報	PMID 17569827
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1126/science.1142021