{"id":14860,"date":"2018-05-23T17:23:14","date_gmt":"2018-05-23T15:23:14","guid":{"rendered":"http:\/\/karmaka.de\/?p=14860"},"modified":"2018-05-23T17:23:14","modified_gmt":"2018-05-23T15:23:14","slug":"experimental-insights-into-stannern%e2%80%90trend-eucrite-petrogenesis","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=14860","title":{"rendered":"Experimental insights into Stannern\u2010trend eucrite petrogenesis"},"content":{"rendered":"<p>Crossley, S. D., Lunning, N. G., Mayne, R. G., McCoy, T. J., Yang, S. , Humayun, M. , Ash, R. D., Sunshine, J. M., Greenwood, R. C. and Franchi, I. A.<\/p>\n<p>Meteorit Planet Sci. .<br \/>\ndoi:10.1111\/maps.13114<\/p>\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1111\/maps.13114\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;The incompatible trace element\u2010enriched Stannern\u2010trend eucrites have long been recognized as requiring a distinct petrogenesis from the Main Group\u2010Nuevo Laredo (MGNL) eucrites. Barrat et al. () proposed that Stannern\u2010trend eucrites formed via assimilation of crustal partial melts by a MGNL\u2010trend magma. Previous experimental studies of low\u2010degree partial melting of eucrites did not produce sufficiently large melt pools for both major and trace element analyses. Low\u2010degree partial melts produced near the solidus are potentially the best analog to the assimilated crustal melts. We partially melted the unbrecciated, unequilibrated MGNL\u2010trend eucrite NWA 8562 in a 1 atm gas\u2010mixing furnace, at IW\u20100.5, and at temperatures between 1050 and 1200 \u00b0C. We found that low\u2010degree partial melts formed at 1050 \u00b0C are incompatible trace element enriched, although the experimental melts did not reach equilibrium at all temperatures. Using our experimental melt compositions and binary mixing modeling, the FeO\/MgO trend of the resultant magmas coincides with the range of known Stannern\u2010trend eucrites when a primary magma is contaminated by crustal partial melts. When experimental major element compositions for eucritic crustal partial melts are combined with trace element concentrations determined by previous modeling (Barrat et al. ), the Stannern\u2010trend can be replicated with respect to both major, minor, and trace element concentrations.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Crossley, S. D., Lunning, N. G., Mayne, R. G., McCoy, T. J., Yang, S. , Humayun, M. , Ash, R. D., Sunshine, J. M., Greenwood, R. C. and Franchi, I. A. Meteorit Planet Sci. &#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35,33],"tags":[1823,212,4531,4533,4532],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14860"}],"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=14860"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14860\/revisions"}],"predecessor-version":[{"id":14861,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/14860\/revisions\/14861"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}