{"id":14643,"date":"2018-04-16T05:46:38","date_gmt":"2018-04-16T04:46:38","guid":{"rendered":"http:\/\/karmaka.de\/?p=14643"},"modified":"2018-04-16T06:01:33","modified_gmt":"2018-04-16T05:01:33","slug":"rapid-effects-of-terrestrial-alteration-on-highly-siderophile-elements-in-the-sutters-mill-meteorite","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=14643","title":{"rendered":"Rapid effects of terrestrial alteration on highly siderophile elements in the Sutter&#8217;s Mill meteorite"},"content":{"rendered":"<p>Richard J. Walker, Qing\u2010Zhu Yin, Philipp R. Heck<\/p>\n<p>Meteoritics &#038; Planetary Science<\/p>\n<p>Meteorit Planet Sci. . doi:10.1111\/maps.13102<\/p>\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.13102\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;The 187Re\u2010187Os isotopic systematics of many bulk chondrites plot well beyond analytical uncertainties of a primordial isochron. Limited variations in 187Os\/188Os, coupled with large variations in Re\/Os ratios among chondrites, suggest that this apparently open\u2010system behavior is a result of the comparatively recent gain or loss of Re and\/or Os. In order to assess whether or not rapid alteration in the terrestrial environment could be responsible for open\u2010system behavior in chondrites, four pieces of the Sutter&#8217;s Mill meteorite were examined for Os isotopic systematics and abundances of highly siderophile elements. Pieces SM1 and SM2 were collected prior to a rain event, within 2 days of the fall. Pieces SM51 and SM53 were collected after a rain event. There are significant but minor relative and absolute variations in the abundances of the highly siderophile elements, as well as187Os\/188Os among the four pieces. Rhenium\u2010Os isotopic data for SM1 and SM2 plot within analytical uncertainties of a primordial isochron, while powders made from SM51 and SM53 do not. These results suggest that interactions with rain caused some redistribution of Re, and to a lesser extent Os, within small pieces of the meteorite. Thus, Re\u2010Os isotopic systematics of <dm\u2010size pieces of chondrites must be considered susceptible to modification after only a short time on the surface, where exposed to rain.\"\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Richard J. Walker, Qing\u2010Zhu Yin, Philipp R. Heck Meteoritics &#038; Planetary Science Meteorit Planet Sci. . doi:10.1111\/maps.13102 LINK &#8220;The 187Re\u2010187Os isotopic systematics of many bulk chondrites plot well beyond analytical uncertainties of a primordial isochron&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,18,49,64],"tags":[4471,404,1384,4472,529,522,4473,1834,4470,2414],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14643"}],"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=14643"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14643\/revisions"}],"predecessor-version":[{"id":14644,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14643\/revisions\/14644"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}