LINK<\/strong><\/a><\/p>\n\n\n\n“Shock\u2010induced melting textures and high\u2010pressure polymorphs in 178 ordinary chondrites of all chemical groups and petrologic types were investigated. The shock\u2010induced melting modes were classified into three types, namely pocket, line, and network. The type of shock\u2010induced melting depends on the petrologic type. The width of the shock\u2010induced melt increased with increasing the petrologic type number. The approximate estimated shock\u2010pressure ranges recorded in and around the shock\u2010induced melts of the H\u2010group ordinary chondrites based on the identified high\u2010pressure polymorphs were as follows: H3, less than 2 GPa; H4\u2013H6, 2\u20136 GPa. For ordinary chondrites of the L\/LL group, the values were as follows: L\/LL3, 2\u20136 GPa; L\/LL4, 2\u201314 GPa; L5: 14\u201320 GPa; LL5, 2\u201314 GPa; L6, 17\u201323 GPa; and LL6, 14\u201318 GPa. After adopting the estimated shock pressures into the onion shell\u2010structured parent body model, the shock pressure on the surface was much lower than in the interior. One possibility is that the apparent lower shock pressure on the surface is due to spallation during the impact. Considering the features of the high\u2010pressure polymorphs, the major disruption history of the parent bodies is different in each chemical group, although the L\/LL chondrite parent bodies may have a similar major disruption history.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Masaaki Miyahara, Akira Yamaguchi, Masato Saitoh, Kanta Fukimoto, Takeshi Sakai, Hiroaki Ohfuji, Naotaka Tomioka, Yu Kodama, Eiji Ohtani Meteoritics & Planetary ScienceVersion of Record online: 27 January 2021 LINK “Shock\u2010induced melting textures and high\u2010pressure polymorphs…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,23,24,7,337,63],"tags":[2932,3262,1807,3661,314],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25847"}],"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=25847"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25847\/revisions"}],"predecessor-version":[{"id":25849,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25847\/revisions\/25849"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}