{"id":25532,"date":"2021-01-04T13:18:52","date_gmt":"2021-01-04T12:18:52","guid":{"rendered":"http:\/\/karmaka.de\/?p=25532"},"modified":"2021-01-04T13:22:10","modified_gmt":"2021-01-04T12:22:10","slug":"the-origin-of-the-moons-earth-like-tungsten-isotopic-composition-from-dynamical-and-geochemical-modeling","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=25532","title":{"rendered":"The origin of the Moon\u2019s Earth-like tungsten isotopic composition from dynamical and geochemical modeling<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Rebecca A. Fischer, Nicholas G. Zube &amp; Francis Nimmo<\/p>\n\n\n\n<p>Nature Communications, Volume 12, Article number: 35 (2021)<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-020-20266-1\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.nature.com\/articles\/s41467-020-20266-1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The Earth and Moon have identical or very similar isotopic compositions for many elements, including tungsten. However, canonical models of the Moon-forming impact predict that the Moon should be made mostly of material from the impactor, Theia. Here we evaluate the probability of the Moon inheriting its Earth-like tungsten isotopes from Theia in the canonical giant impact scenario, using 242 N-body models of planetary accretion and tracking tungsten isotopic evolution, and find that this probability is &lt;1.6\u20134.7%. Mixing in up to 30% terrestrial materials increases this probability, but it remains &lt;10%. Achieving similarity in stable isotopes is also a low-probability outcome, and is controlled by different mechanisms than tungsten. The Moon\u2019s stable isotopes and tungsten isotopic composition are anticorrelated due to redox effects, lowering the joint probability to significantly less than 0.08\u20130.4%. We therefore conclude that alternate explanations for the Moon\u2019s isotopic composition are likely more plausible.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rebecca A. Fischer, Nicholas G. Zube &amp; Francis Nimmo Nature Communications, Volume 12, Article number: 35 (2021) LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;The Earth and Moon have identical or very similar isotopic compositions for many&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[131,112,115],"tags":[80,1857,1665,114,1735,3292],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25532"}],"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=25532"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25532\/revisions"}],"predecessor-version":[{"id":25533,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25532\/revisions\/25533"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}