{"id":41818,"date":"2026-06-13T22:34:18","date_gmt":"2026-06-13T20:34:18","guid":{"rendered":"https:\/\/karmaka.de\/?p=41818"},"modified":"2026-06-13T22:40:30","modified_gmt":"2026-06-13T20:40:30","slug":"a-noachian-hydrosphere-component-in-the-4-1-ga-martian-meteorite-teghaza-001","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=41818","title":{"rendered":"A Noachian hydrosphere component in the 4.1-Ga Martian meteorite Teghaza 001<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Lee Saper, Yang Liu, Yunbin Guan, Chi Ma, Elizabeth Ann Bell, and Carl B. Agee<\/p>\n\n\n\n<p>Science Advances<br>10 Jun 2026<br>Vol 12, Issue 24<\/p>\n\n\n\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.aea3420\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.science.org\/doi\/epdf\/10.1126\/sciadv.aea3420\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The recent discovery of a 4.1-billion-year-old (Ga) Martian gabbroic diorite enables an assessment of water reservoirs on early Mars. Measurements of H2O and D\/H in igneous Ca-phosphates record mixing between D-poor magmatic water and a D-rich component that retains an imprint of the ancient Martian hydrosphere. The D\/H ratio of magmatic water is similar in Martian magmas with different ages and mantle sources, indicating that early differentiation processes did not fractionate H isotopes in the primordial Martian mantle. The D-rich component was assimilated by migrating magmas that interacted with aqueously altered basaltic crust. Our minimum bound on the D\/H ratio of the Martian hydrosphere at 4.1 Ga (~2\u00d7 the D\/H ratio of Earth seawater) supports models of rapid H loss to space from Mars\u2019 juvenile atmosphere.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lee Saper, Yang Liu, Yunbin Guan, Chi Ma, Elizabeth Ann Bell, and Carl B. Agee Science Advances10 Jun 2026Vol 12, Issue 24 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;The recent discovery of a 4.1-billion-year-old (Ga) Martian&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,42,43],"tags":[658,194,3421,2089,1858,1920,5527,6832,1829,7214,1855],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41818"}],"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=41818"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41818\/revisions"}],"predecessor-version":[{"id":41819,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41818\/revisions\/41819"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}