{"id":19323,"date":"2019-05-01T00:42:43","date_gmt":"2019-04-30T22:42:43","guid":{"rendered":"http:\/\/karmaka.de\/?p=19323"},"modified":"2019-05-01T00:43:05","modified_gmt":"2019-04-30T22:43:05","slug":"the-meteorite-flux-of-the-last-2-myr-recorded-in-the-atacama-desert","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=19323","title":{"rendered":"The meteorite flux of the last 2 Myr recorded in the Atacama desert<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R. Braucher, D. Bourl\u00e8s, ASTER Team, M. Gounelle, A. Morbidelli,  V. Debaille, M. Van Ginneken, M. Valenzuela, Y. Quesnel, R. Martinez<\/p>\n\n\n\n<p>accepted in Geology<\/p>\n\n\n\n<p><a href=\"https:\/\/arxiv.org\/pdf\/1904.12644\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The evolution of the meteorite flux to the Earth can be studied by determining the terrestrial ages of meteorite collected in hot deserts. We have measured the terrestrial ages of 54 stony meteorites from the El M\u00e9dano area, in the Atacama Desert, using the cosmogenic nuclide chlorine 36. With an average age of 710 ka, this collection is the oldest collection of non fossil meteorites at the Earth&#8217;s surface. This allows both determining the average meteorite flux intensity over the last 2 Myr (222 meteorites larger than 10 g per km2 per Myr) and discussing its possible compositional variability over the Quaternary period. A change in the flux composition, with more abundant H chondrites, occurred between 0.5 and 1 Ma, possibly due to the direct delivery to Earth of a meteoroid swarm from the asteroid belt.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R. Braucher, D. Bourl\u00e8s, ASTER Team, M. Gounelle, A. Morbidelli, V. Debaille, M. Van Ginneken, M. Valenzuela, Y. Quesnel, R. Martinez accepted in Geology PDF (OPEN ACCESS)&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,23,24,8,7,70],"tags":[464,2522,2523,2521,3548,1807,601],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19323"}],"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=19323"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19323\/revisions"}],"predecessor-version":[{"id":19325,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/19323\/revisions\/19325"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}