{"id":42772,"date":"2026-11-12T06:44:52","date_gmt":"2026-11-12T05:44:52","guid":{"rendered":"https:\/\/karmaka.de\/?p=42772"},"modified":"2026-11-12T06:44:54","modified_gmt":"2026-11-12T05:44:54","slug":"a-primordial-heavy-water-reservoir-in-the-outer-solar-system","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=42772","title":{"rendered":"A primordial heavy water reservoir in the outer solar system<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Lindsay P. Keller, Christopher J. Snead, Ming-Chang Liu, and Kevin D. McKeegan<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Science Advances<br>11 Nov 2026<br>Vol 12, Issue 46<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.aeg1602\" target=\"_blank\" rel=\"noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.science.org\/doi\/epdf\/10.1126\/sciadv.aeg1602\" target=\"_blank\" rel=\"noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text wp-block-paragraph\">&#8220;The oxygen (O) isotopic composition of outer solar system ices is believed to be enriched in heavy O isotopes owing to photochemical processes, but evidence for this O reservoir is exceedingly rare in meteorites. Hydrated interplanetary dust particles (IDPs) collected in Earth\u2019s stratosphere that display high densities of solar energetic particle tracks originate from Edgeworth-Kuiper belt objects. Their mineralogy is dominated by hydrated minerals that formed by alteration of anhydrous precursor minerals at low temperatures through reactions with water (H2O)\u2013carbon dioxide fluids. The O isotopic compositions of track-rich hydrated IDPs implicate 17,18O-rich ices as the source of H2O involved in their alteration, providing compelling evidence for the presence of a major heavy water reservoir beyond the orbits of the gas giant planets that was largely isolated from inner solar system materials.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lindsay P. Keller, Christopher J. Snead, Ming-Chang Liu, and Kevin D. McKeegan Science Advances11 Nov 2026Vol 12, Issue 46 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;The oxygen (O) isotopic composition of outer solar system ices is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61,9,10,65,71,335,81],"tags":[4274,3965,4273,1842,3273,5007,2089,7334,301,1845,397,463],"class_list":["post-42772","post","type-post","status-publish","format-standard","hentry","category-aqueous-alteration","category-carbonaceous-chondrite","category-ci","category-oxygen-isotopes","category-solar-system","category-ungrouped-carbonaceous-chondrite","category-water","tag-17-18o-rich-water","tag-17o","tag-18o","tag-aqueous-alteration","tag-carbonaceous-chondrite","tag-ci-like-material","tag-h2o","tag-heavy-water-reservoir","tag-interplanetary-dust-particles-idps","tag-oxygen-isotopes","tag-protoplanetary-disk","tag-tagish-lake"],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42772","targetHints":{"allow":["GET"]}}],"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=42772"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42772\/revisions"}],"predecessor-version":[{"id":42773,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42772\/revisions\/42773"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}