Remnants of the Early Solar System Water Enriched in Heavy Oxygen Isotopes

Details Remnants of the Early Solar System Water Enriched in Heavy Oxygen Isotopes Remnants of the Early Solar System Water Enriched in Heavy Oxygen Isotopes

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sci...317..231s&link_type=abstract

Science, Volume 317, Issue 5835, pp. 231- (2007).

Computer Science

35

Scientific paper

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.

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