{"id":39953,"date":"2025-12-24T13:51:53","date_gmt":"2025-12-24T12:51:53","guid":{"rendered":"https:\/\/karmaka.de\/?p=39953"},"modified":"2025-12-24T13:51:54","modified_gmt":"2025-12-24T12:51:54","slug":"the-d-h-ratio-of-the-martian-mantle-evidence-from-the-lafayette-meteorite","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=39953","title":{"rendered":"The D\/H ratio of the Martian Mantle: Evidence from the Lafayette Meteorite<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Lydia J. Hallis, Evangelos Christou, Jemma Davidson, Andrea G. Distel<\/p>\n\n\n\n<p>Advances in Geochemistry and Cosmochemistry<br>19 December 2025<\/p>\n\n\n\n<p><a href=\"https:\/\/www.researchgate.net\/publication\/398874907_The_DH_ratio_of_the_Martian_Mantle_Evidence_from_the_Lafayette_Meteorite\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.researchgate.net\/publication\/398874907_The_DH_ratio_of_the_Martian_Mantle_Evidence_from_the_Lafayette_Meteorite\/fulltext\/69458a110c98040d481eff12\/The-D-H-ratio-of-the-Martian-Mantle-Evidence-from-the-Lafayette-Meteorite.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Hydrous apatite in the nakhlite group of martian meteorites shows evidence of Cl-rich fluid incorporation into the magma prior to apatite crystallisation. Thus, nakhlite apatite D\/H ratios should reflect a mixture between the parental magma and this crustally derived fluid. Here we present the volatile content and D\/H ratios of apatite within the nakhlite Lafayette (\u03b4D 137 to 352\u2030), suggesting mixing between a crustally derived Cl-rich fluid and an intermediate D\/H ratio (\u03b4D \u2248 400\u2030) and a magma with a low D\/H ratio (\u03b4D \u2248 \u2212100\u2030). This martian mantle D\/H ratio is similar to that of Earth\u2019s upper mantle, but is higher than recent D\/H ratios measured within a number of other inner Solar System materials. Thus, D\/H ratio heterogeneity in these materials points towards multiple sources of hydrogen during the formation of rocky planetary bodies in the inner Solar System.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lydia J. Hallis, Evangelos Christou, Jemma Davidson, Andrea G. Distel Advances in Geochemistry and Cosmochemistry19 December 2025 LINK (OPEN ACCESS) PDF (OPEN ACCESS) &#8220;Hydrous apatite in the nakhlite group of martian meteorites shows evidence of&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,44],"tags":[428,634,1920,1830],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39953"}],"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=39953"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39953\/revisions"}],"predecessor-version":[{"id":39955,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39953\/revisions\/39955"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=39953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}