{"id":29341,"date":"2021-10-27T18:59:01","date_gmt":"2021-10-27T16:59:01","guid":{"rendered":"https:\/\/karmaka.de\/?p=29341"},"modified":"2021-10-27T18:59:02","modified_gmt":"2021-10-27T16:59:02","slug":"three%e2%80%90dimensional-petrography-of-the-tucson-meteorite","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=29341","title":{"rendered":"Three\u2010dimensional petrography of the Tucson meteorite"},"content":{"rendered":"\n<p>Jon M. Friedrich, Michael K. Weisberg, Lucille C. Malecek, C. E. Nehru<\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>First Published: 27 October 2021<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/maps.13751\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;We use X-ray microtomography (\u00b5CT) and digital data extraction techniques for the three-dimensional (3-D) petrographic investigation of the Tucson meteorite. Our results show that the silicate-free metal regions in Tucson exist as discrete objects surrounded by a continuous silicate-containing metal \u201cmatrix.\u201d Volumetric measurements of the silicate-free metal regions in Tucson demonstrate that they are akin to the sizes of metallic nodules found in CBa chondrites. Silicate-free metal regions have bladed or prolate shapes. Nonmetallic minerals in Tucson are predominately equant or prolate in shape. Nonmetallic mineral grains and silicate-free metal regions in Tucson share a common orientation and are part of a petrofabric composed of a lineation. Any foliation in Tucson is weakly developed. We interpret the petrofabric as being the result of a single event on the Tucson parent body, during which Tucson experienced shearing forces. Our 3-D petrographic investigation supports the idea that Tucson is an unusual member of the CR chondrite clan.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jon M. Friedrich, Michael K. Weisberg, Lucille C. Malecek, C. E. Nehru Meteoritics &amp; Planetary ScienceFirst Published: 27 October 2021 LINK &#8220;We use X-ray microtomography (\u00b5CT) and digital data extraction techniques for the three-dimensional (3-D)&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,12,582,214,140],"tags":[1810,4558,1605],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/29341"}],"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=29341"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/29341\/revisions"}],"predecessor-version":[{"id":29342,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/29341\/revisions\/29342"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}