{"id":12280,"date":"2017-04-11T10:26:13","date_gmt":"2017-04-11T08:26:13","guid":{"rendered":"http:\/\/karmaka.de\/?p=12280"},"modified":"2017-10-24T07:57:11","modified_gmt":"2017-10-24T05:57:11","slug":"annama-h-chondrite-mineralogy-physical-properties-cosmic-ray-exposure-and-parent-body-history","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=12280","title":{"rendered":"Annama H chondrite\u2014Mineralogy, physical properties, cosmic ray exposure, and parent body history.<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"<p>Kohout, T., Haloda, J., Halodov\u00e1, P., Meier, M. M. M., Maden, C., Busemann, H., Laubenstein, M., Caffee, Marc. W., Welten, K. C., Hopp, J., Trieloff, M., Mahajan, R. R., Naik, S., Trigo-Rodriguez, J. M., Moyano-Cambero, C. E., Oshtrakh, M. I., Maksimova, A. A., Chukin, A. V., Semionkin, V. A., Karabanalov, M. S., Felner, I., Petrova, E. V., Brusnitsyna, E. V., Grokhovsky, V. I., Yakovlev, G. A., Gritsevich, M., Lyytinen, E., Moilanen, J., Kruglikov, N. A. and Ishchenko, A. V.<\/p>\n<p>Meteoritics &#038; Planetary Science. doi: 10.1111\/maps.12871<\/p>\n<p><a href=\"http:\/\/onlinelibrary.wiley.com\/wol1\/doi\/10.1111\/maps.12871\/abstract\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>Update (24 Oct 2017): <a href=\"https:\/\/arxiv.org\/ftp\/arxiv\/papers\/1710\/1710.07687.pdf\" target=\"_blank\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n<p>&#8220;The fall of the Annama meteorite occurred early morning (local time) on April 19, 2014 on the Kola Peninsula (Russia). Based on mineralogy and physical properties, Annama is a typical H chondrite. It has a high Ar-Ar age of 4.4 Ga. Its cosmic ray exposure history is atypical as it is not part of the large group of H chondrites with a prominent 7\u20138 Ma peak in the exposure age histograms. Instead, its exposure age is within uncertainty of a smaller peak at 30 \u00b1 4 Ma. The results from short-lived radionuclides are compatible with an atmospheric pre-entry radius of 30\u201340 cm. However, based on noble gas and cosmogenic radionuclide data, Annama must have been part of a larger body (radius >65 cm) for a large part of its cosmic ray exposure history. The 10Be concentration indicates a recent (3\u20135 Ma) breakup which may be responsible for the Annama parent body size reduction to 30\u201335 cm pre-entry radius.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kohout, T., Haloda, J., Halodov\u00e1, P., Meier, M. M. M., Maden, C., Busemann, H., Laubenstein, M., Caffee, Marc. W., Welten, K. C., Hopp, J., Trieloff, M., Mahajan, R. R., Naik, S., Trigo-Rodriguez, J. M., Moyano-Cambero,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1221,69,6,7,337,47],"tags":[1222,1849,1806,2416,1807,1832],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12280"}],"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=12280"}],"version-history":[{"count":3,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12280\/revisions"}],"predecessor-version":[{"id":13805,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12280\/revisions\/13805"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}