{"id":31688,"date":"2022-12-12T15:12:26","date_gmt":"2022-12-12T14:12:26","guid":{"rendered":"https:\/\/karmaka.de\/?p=31688"},"modified":"2022-12-12T15:12:27","modified_gmt":"2022-12-12T14:12:27","slug":"potassium-isotope-heterogeneity-in-the-early-solar-system-controlled-by-extensive-evaporation-and-partial-recondensation","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=31688","title":{"rendered":"Potassium isotope heterogeneity in the early Solar System controlled by extensive evaporation and partial recondensation<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Yan Hu, Fr\u00e9d\u00e9ric Moynier &amp; Martin Bizzarro<\/p>\n\n\n\n<p>Nature Communications, Volume 13, Article number: 7669<br>Published: 12 December 2022<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-022-35362-7\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.nature.com\/articles\/s41467-022-35362-7.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Volatiles are vital ingredients for a habitable planet. Angrite meteorites sample the most volatile-depleted planetesimal in the Solar System, particularly for the alkali elements. They are prime targets for investigating the formation of volatile-poor rocky planets, yet their exceptionally low volatile content presents a major analytical challenge. Here, we leverage improved sensitivity and precision of K isotopic analysis to constrain the mechanism of extreme K depletion (&gt;99.8%) in angrites. In contrast with the isotopically heavy Moon and Vesta, we find that angrites are strikingly depleted in the heavier K isotopes, which is best explained by partial recondensation of vaporized K following extensive evaporation on the angrite parent body (APB) during magma-ocean stage. Therefore, the APB may provide a rare example of isotope fractionation controlled by condensation, rather than evaporation, at a planetary scale. Furthermore, nebula-wide K isotopic variations primarily reflect volatility-driven fractionations instead of presolar nucleosynthetic heterogeneity proposed previously&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yan Hu, Fr\u00e9d\u00e9ric Moynier &amp; Martin Bizzarro Nature Communications, Volume 13, Article number: 7669Published: 12 December 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;Volatiles are vital ingredients for a habitable planet. Angrite meteorites sample the most&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,72,71],"tags":[1825,1208,3701,5103,3236,369],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31688"}],"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=31688"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31688\/revisions"}],"predecessor-version":[{"id":31689,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31688\/revisions\/31689"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=31688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=31688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=31688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}