{"id":31185,"date":"2022-08-25T22:35:28","date_gmt":"2022-08-25T20:35:28","guid":{"rendered":"https:\/\/karmaka.de\/?p=31185"},"modified":"2022-08-25T22:35:31","modified_gmt":"2022-08-25T20:35:31","slug":"aqueously-altered-igneous-rocks-sampled-on-the-floor-of-jezero-crater-mars","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=31185","title":{"rendered":"Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>K. A. Farley, K. M. Stack, D. L. Shuster, B. H. N. Horgan, J. A. Hurowitz, J. D. Tarnas, J. I. Simon, V. Z. Sun, E. L. Scheller, [\u2026] M.-P. Zorzano<\/p>\n\n\n\n<p>Science<br>25 August 2022<\/p>\n\n\n\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.abo2196\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.science.org\/doi\/epdf\/10.1126\/science.abo2196\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The Perseverance rover landed in Jezero crater, Mars, to investigate ancient lake and river deposits. We report observations of the crater floor, below the crater\u2019s sedimentary delta, finding the floor consists of igneous rocks altered by water. The lowest exposed unit, informally named S\u00e9\u00edtah, is a coarsely crystalline olivine-rich rock, which accumulated at the base of a magma body. Fe-Mg carbonates along grain boundaries indicate reactions with CO2-rich water, under water-poor conditions. Overlying S\u00e9\u00edtah is a unit informally named M\u00e1az, which we interpret as lava flows or the chemical complement to S\u00e9\u00edtah in a layered igneous body. Voids in these rocks contain sulfates and perchlorates, likely introduced by later near-surface brine evaporation. Core samples of these rocks were stored aboard Perseverance for potential return to Earth.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>K. A. Farley, K. M. Stack, D. L. Shuster, B. H. N. Horgan, J. A. Hurowitz, J. D. Tarnas, J. I. Simon, V. Z. Sun, E. L. Scheller, [\u2026] M.-P. Zorzano Science25 August 2022 LINK&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122,42,8,181],"tags":[6360,1858,4899,270],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31185"}],"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=31185"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31185\/revisions"}],"predecessor-version":[{"id":31186,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31185\/revisions\/31186"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=31185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=31185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=31185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}