{"id":22005,"date":"2020-05-07T14:29:55","date_gmt":"2020-05-07T12:29:55","guid":{"rendered":"http:\/\/karmaka.de\/?p=22005"},"modified":"2020-05-07T14:29:58","modified_gmt":"2020-05-07T12:29:58","slug":"convective-activity-in-a-martian-magma-chamber-recorded-by-p%e2%80%90zoning-in-tissint-olivine","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=22005","title":{"rendered":"Convective activity in a Martian magma chamber recorded by P\u2010zoning in Tissint olivine<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>N. Mari, L. J. Hallis, L. Daly, M. R. Lee<\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>Version of Record online:07 May 2020<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.13488\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/epdf\/10.1111\/maps.13488\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The Tissint Martian meteorite is an unusual depleted olivine\u2010phyric shergottite, reportedly sourced from a mantle\u2010derived melt within a deep magma chamber. Here, we report major and trace element data for Tissint olivine and pyroxene, and use these data to provide new insights into the dynamics of the Tissint magma chamber. The presence of irregularly spaced oscillatory phosphorous (P)\u2010rich bands in olivine, along with geochemical evidence indicative of a closed magmatic system, implies that the olivine grains were subject to solute trapping caused by vigorous crystal convection within the Tissint magma chamber. Calculated equilibration temperatures for the earliest crystallizing (antecrystic) olivine cores suggest a Tissint magma source temperature of 1680 \u00b0C, and a local Martian mantle temperature of 1560 \u00b0C during the late Amazonian\u2014the latter being consistent with the ambient mantle temperature of Archean Earth.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>N. Mari, L. J. Hallis, L. Daly, M. R. Lee Meteoritics &amp; Planetary ScienceVersion of Record online:07 May 2020 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;The Tissint Martian meteorite is an unusual depleted olivine\u2010phyric shergottite, reportedly&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,42,43,524],"tags":[2101,1858,1828,1829,1885],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22005"}],"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=22005"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22005\/revisions"}],"predecessor-version":[{"id":22006,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22005\/revisions\/22006"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}