{"id":30838,"date":"2022-07-01T13:12:30","date_gmt":"2022-07-01T11:12:30","guid":{"rendered":"https:\/\/karmaka.de\/?p=30838"},"modified":"2022-07-01T13:13:06","modified_gmt":"2022-07-01T11:13:06","slug":"zinc-isotope-anomalies-in-primitive-meteorites-identify-the-outer-solar-system-as-an-important-source-of-earths-volatile-inventory","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=30838","title":{"rendered":"Zinc isotope anomalies in primitive meteorites identify the outer solar system as an important source of Earth&#8217;s volatile inventory<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Paul S. Savage, Fr\u00e9d\u00e9ric Moynier, Maud Boyet<\/p>\n\n\n\n<p>Icarus<br>In Press, Journal Pre-proof, Available online 1 July 2022<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0019103522002743\" target=\"_blank\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p>&#8220;Highlights<\/p>\n\n\n\n<p>\u2022 Chondrites exhibit a range of Zn isotopic anomalies compared to Earth.<br>\u2022 Earth&#8217;s Zn inventory is distinct from both CC and NC meteorites.<br>\u2022 30% of Earth&#8217;s Zn must have CC (outer solar system) origin.<br>\u2022 Zinc isotopes reveal an outer solar system origin for volatile elements.<br>\u2022 ~6% of Earth&#8217;s material must have a CC (outer solar system) origin.&#8221;<\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The source of and timing of delivery of the volatile elements to Earth is a question that is fundamental to understanding how our planet evolved. Here, we show that primitive meteorites have resolved mass-independent Zn isotope anomalies from the terrestrial reservoir. Carbonaceous chondrites (CC), likely originating from the outer Solar System are distinct from non-CC, and Earth is intermediate between these two components. Modelling based on these data indicates that around 30% of Earth&#8217;s budget of Zn and other moderately volatile material derives from the participation of 6% of CC-like materials during Earth&#8217;s accretion, with the remaining coming from NC meteorites. This implies that, despite the relatively minor mass of Earth thought to derive from CC-like material, the CC component of Earth was relatively and significantly volatile-enriched; this is in line with the observation that the terrestrial elemental abundance pattern of moderately volatile elements could be explained by a carbonaceous source, and with the carbonaceous chondrite-like isotopic budget of more volatile-rich material accreted later in Earth&#8217;s accretion history (e.g. Hg, Se, N, noble gases).&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Paul S. Savage, Fr\u00e9d\u00e9ric Moynier, Maud Boyet IcarusIn Press, Journal Pre-proof, Available online 1 July 2022 LINK (OPEN ACCESS) &#8220;Highlights \u2022 Chondrites exhibit a range of Zn isotopic anomalies compared to Earth.\u2022 Earth&#8217;s Zn inventory&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,72,112,71],"tags":[80,1867,369,1692,5660],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30838"}],"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=30838"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30838\/revisions"}],"predecessor-version":[{"id":30840,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30838\/revisions\/30840"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}