LINK<\/strong><\/a><\/p>\n\n\n\n“Shock\u2010lithification is a fundamental process of making rocks from fine\u2010grained and porous regoliths on the surface of the Moon. Previous investigations have constrained potential shock pressures during shock\u2010lithification based on experimental and numerical simulations. However, pressure and temperature conditions during shock\u2010lithification have not been directly inferred from natural lunar breccias. Here, we report the discovery of widespread tissintite in strongly shock\u2010lithified lunar meteorites, accompanied occasionally by Si\u2010rich corundum and coesite. The coexistence of tissintite and coesite and the absence of stishovite in molten regions indicate a shock pressure of 4\u20138 GPa, which might be the pressure boundary between weak and strong shock\u2010lithification. Meanwhile, the presence of Si\u2010rich corundum imposes a temperature constraint of approximately 2300 K for the intergranular melts. This temperature constraint has profound significance for interpreting the behaviors of volatile and moderately volatile elements and remanent magnetization records during strongly shock\u2010lithification of lunar breccias.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Ai\u2010Cheng Zhang, Qin\u2010Ting Jiang, Naotaka Tomioka, Yan\u2010Jun Guo, Jia\u2010Ni Chen, Yang Li, Naoya Sakamoto, Hisayoshi Yurimoto Geophysical Research LettersFirst published: 06 February 2021 LINK “Shock\u2010lithification is a fundamental process of making rocks from fine\u2010grained and…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,115],"tags":[1827,2238,3324,5862,1331],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26151"}],"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=26151"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26151\/revisions"}],"predecessor-version":[{"id":26152,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26151\/revisions\/26152"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}