{"id":30531,"date":"2022-04-23T10:20:40","date_gmt":"2022-04-23T08:20:40","guid":{"rendered":"https:\/\/karmaka.de\/?p=30531"},"modified":"2023-06-25T18:02:00","modified_gmt":"2023-06-25T16:02:00","slug":"a-window-into-atmospheric-escape-on-early-mars-provided-by-argon-isotopes-in-a-martian-meteorite","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=30531","title":{"rendered":"A window into atmospheric escape on early Mars provided by argon isotopes in a Martian meteorite"},"content":{"rendered":"\n<p>Chelsea D. Willett, William S. Cassata, Naomi E. Marks<\/p>\n\n\n\n<p>Geochimica et Cosmochimica Acta<br>Available online: 23 April 2022<\/p>\n\n\n\n<p>Update (24 June 2023):<br><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0016703723002703\" target=\"_blank\" rel=\"noreferrer noopener\">Corrigendum to \u201cA window into atmospheric escape on early Mars provided by argon isotopes in a Martian meteorite\u201d [Geochim. Cosmochim. Acta 329 (2022) 119\u2013134]<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S001670372200196X\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Novel analytical approaches to determining the trapped 38Ar\/36Ar ratio of gases contained within Martian meteorites are presented and applied to the Martian regolith breccia Northwest Africa (NWA) 7034 and paired stone NWA 11220. The resulting data indicate that extensive mass-dependent fractionation of atmospheric Ar may have occurred within 150 million years of planetary formation, ostensibly as a result of diffusion-limited hydrodynamic escape. The inferred fractional loss of Ar and lighter atmospheric constituents exceeds 50%. These data suggest that volatiles derived from planetary outgassing and\/or impactors may dominate the present abundance of atmospheric Ar.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chelsea D. Willett, William S. Cassata, Naomi E. Marks Geochimica et Cosmochimica ActaAvailable online: 23 April 2022 Update (24 June 2023):Corrigendum to \u201cA window into atmospheric escape on early Mars provided by argon isotopes in&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,42,46],"tags":[4163,668,2589,1828,4535,183],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30531"}],"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=30531"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30531\/revisions"}],"predecessor-version":[{"id":33914,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30531\/revisions\/33914"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}