{"id":36603,"date":"2024-08-30T16:27:52","date_gmt":"2024-08-30T14:27:52","guid":{"rendered":"https:\/\/karmaka.de\/?p=36603"},"modified":"2024-08-30T16:27:53","modified_gmt":"2024-08-30T14:27:53","slug":"petrology-and-chronology-of-mare-components-in-lunar-basaltic-breccia-meteorite-northwest-africa-12384","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=36603","title":{"rendered":"Petrology and chronology of mare components in lunar basaltic breccia meteorite Northwest Africa 12384<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Christopher J.-K. Yen, Paul K. Carpenter, C\u00e9cile Deligny, Alexander Nemchin, Renaud Merle, Anthony J. Irving, Kunihiko Nishiizumi, Marc W. Caffee, A. J. Timothy Jull, Martin Whitehouse, Bradley L. Jolliff<\/p>\n\n\n\n<p>MAPS, Version of Record online: 30 August 2024<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.14260\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/epdf\/10.1111\/maps.14260\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Northwest Africa (NWA) 12384 is a lunar polymict breccia composed almost entirely of basaltic components. The clast content includes low- to very-low-Ti volcanic picritic glass, basaltic vitrophyre, and crystalline pigeonite basalt\u2014an assemblage of volcanic materials that can be tested for petrogenetic relationships. We present the inferred history of select mare components of NWA 12384 as suggested by texture, mineralogy, and petrography, and compare them to Apollo samples and other lunar meteorites. In addition, we used the volcanic glasses in the breccia as a primary composition for crystallization modeling and comparison to the lithic clast compositions. We find that the mafic clasts in NWA 12384 cannot be derived from the picritic glass through a common liquid line of descent because of higher Ti content, though they may have crystallized from a separate, common liquid line of descent. These clasts could represent local source-region heterogeneity or differential assimilation of more Ti-rich material. Pb-Pb SIMS analyses of a large basalt clast in NWA 12384 reveal an age of 3044\u2009\u00b1\u200941\u2009Ma (2\u03c3), which is used together with the chemical data and 4\u03c0 cosmic ray exposure age of less than 20\u2009kyr and terrestrial age of between 3.1 and 17.3\u2009kyr to constrain the possible locations of provenance for this meteorite.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Christopher J.-K. Yen, Paul K. Carpenter, C\u00e9cile Deligny, Alexander Nemchin, Renaud Merle, Anthony J. Irving, Kunihiko Nishiizumi, Marc W. Caffee, A. J. Timothy Jull, Martin Whitehouse, Bradley L. Jolliff MAPS, Version of Record online: 30&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[2883,2238,3128,1857,6708],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/36603"}],"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=36603"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/36603\/revisions"}],"predecessor-version":[{"id":36604,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/36603\/revisions\/36604"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=36603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=36603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=36603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}