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Remnants of the early solar system water enriched in heavy oxygen isotopes
| Title: | Remnants of the early solar system water enriched in heavy oxygen isotopes |
| Authors: | Sakamoto, Naoya Browse this author | | Seto, Yusuke Browse this author | | Itoh, Shoichi Browse this author →KAKEN DB | | Kuramoto, Kiyoshi Browse this author | | Fujino, Kiyoshi Browse this author | | Nagashima, Kazuhide Browse this author | | Krot, Alexander N. Browse this author | | Yurimoto, Hisayoshi Browse this author |
| Issue Date: | 13-Jul-2007 |
| Publisher: | American Association for the Advancement of Science |
| Journal Title: | Science |
| Volume: | 317 |
| Issue: | 5835 |
| Start Page: | 231 |
| End Page: | 233 |
| Publisher DOI: | 10.1126/science.1142021 |
| PMID: | 17569827 |
| Abstract: | 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. |
| Rights: | 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 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/26443 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 圦本 尚義
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