Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8910706 | Geochimica et Cosmochimica Acta | 2018 | 13 Pages |
Abstract
Two eucrites (GRA 98098 and CMS 04049) yield isotopic compositions that are distinct from this mean for δ34S, and in the case of CMS 04049, for Î33S as well. GRA 98098 yields δ34S of 0.81â¯Â±â¯0.18â° (2 Ïest, estimated external precision), Î33S of 0.010â¯Â±â¯0.008â° (2 Ïest) and Î36S of 0.01â¯Â±â¯0.34â° (2 Ïest). CMS 04049 yields δ34S of â0.22â¯Â±â¯0.18â° (2 Ïest), Î33S of 0.024â¯Â±â¯0.008â° (2 Ïest), and Î36S of â0.17â¯Â±â¯0.34â° (2 Ïest). The more positive δ34S of GRA98098 suggests fractionation of sulfur (34S/32S) by a combination of parent body processes that may be linked to evaporation. The more positive Î33S and the negative δ34S of CMS 04049 suggests that this meteorite may be from another 'Vesta-like' parent body.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Nanping Wu, James Farquhar, James W. III, Nivea Magalhães,