LINK<\/strong><\/a><\/p>\n\n\n\n“Highlights<\/p>\n\n\n\n
\u2022 Isotope characteristics of Ru, Mo, and W in rare iron meteorite groups are compared.
\n\u2022 Non-carbonaceous and carbonaceous meteorites have distinct Mo-Ru and Mo-W relations.
\n\u2022 Ru, Mo, and W isotopes support thermal\/chemical processing of presolar material.
\n\u2022 Nucleosynthetic heterogeneity evolved in the reservoirs under distinct conditions.
\n\u2022 Carbonaceous reservoir was more oxidized than non-carbonaceous reservoir.”<\/p>\n\n\n\n
“Recent work has identified a nucleosynthetic isotope dichotomy between \u201ccarbonaceous\u201d (CC) and \u201cnon-carbonaceous\u201d (NC) meteorites. Here, we report new Ru isotope data for rare iron meteorite groups belonging to the NC and CC suites. We show that by studying the relative isotopic characteristics of Ru, Mo, and W in iron meteorites, it is possible to constrain the processes leading to the distinct isotope heterogeneities in both reservoirs. In NC meteorites, internally normalized, mass-independent isotope ratios of Mo and Ru are correlated, but those of Mo and W are not. In CC meteorites, Mo and W isotope ratios are correlated, but those of Mo and Ru are not; specifically, Mo isotopic compositions are variable and those of Ru are more restricted. The contrasting behaviors of Ru and W relative to Mo in the two reservoirs likely require processing of the presolar carriers under distinct redox conditions. This provides further evidence that NC and CC meteorites originated from spatially separated reservoirs that evolved under different prevailing conditions.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Emily A. Worsham, Christoph Burkhardt, Gerrit Budde, Mario Fischer-G\u00f6dde,Thomas S.Kruijer, Thorsten Kleine Earth and Planetary Science Letters Volume 521, 1 September 2019, Pages 103-112 LINK “Highlights \u2022 Isotope characteristics of Ru, Mo, and W in…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,72,214,71],"tags":[3273,4400,4453,1572,3554,3292],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19856"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19856"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19856\/revisions"}],"predecessor-version":[{"id":19857,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19856\/revisions\/19857"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}