{"id":30651,"date":"2022-05-26T21:36:52","date_gmt":"2022-05-26T19:36:52","guid":{"rendered":"https:\/\/karmaka.de\/?p=30651"},"modified":"2022-05-26T23:02:03","modified_gmt":"2022-05-26T21:02:03","slug":"the-unusual-low-mg-rock-clasts-from-lohawat-howardite-india-petrogenetic-implications","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=30651","title":{"rendered":"The unusual low Mg rock clasts from Lohawat Howardite, India: Petrogenetic implications"},"content":{"rendered":"\n<p>Dwijesh Ray &amp; Sambhunath Ghosh<\/p>\n\n\n\n<p>Journal of Earth System Science, Volume 131, Article number: 125 (2022)<br>Published: 26 May 2022<\/p>\n\n\n\n<p><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s12040-022-01875-4\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;We report here a few, unusual, low Mg rock clasts from Lohawat howardite, a megaregolith of matrix-dominated polymict breccia comprising clasts of ~16% diogenites, ~9% basaltic eucrites and ~3% cumulate eucrites. Low Mg rock clasts are largely characterised by silica\u2013fayalitic olivine (Fa73\u201395)\u2013ferroaugite (En3\u201329Fs32\u201355Wo34\u201341) bearing symplectites along with ferroan pyroxenes, calcic feldspars (An 89.3), low Mg ilmenite (&lt;0.3 wt.% MgO), troilite and SiO2 polymorph. A few low Mg clasts without symplectites contain ferro-pigeonite (En30Fs55.8Wo14), ternary calcic feldspar (An81.8Ab17.4Or0.8), low Mg ilmenite (&gt;0.3 wt.% MgO) and a quartz-ilmenite intergrowth phase. Two tiny melt inclusions include K-rich granite and Ca-rich granitic composition, respectively. These low Mg rock clasts appeared ballistically transported regolith fines of granite from some unidentified, distant areas where high-energy impact on eucrite crust could have generated limited parental melt (via impact-induced remelting) and ultimately produced the low Mg rocks and acidic melts, respectively.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dwijesh Ray &amp; Sambhunath Ghosh Journal of Earth System Science, Volume 131, Article number: 125 (2022)Published: 26 May 2022 LINK &#8220;We report here a few, unusual, low Mg rock clasts from Lohawat howardite, a megaregolith&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[706,1822,4765],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30651"}],"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=30651"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30651\/revisions"}],"predecessor-version":[{"id":30652,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30651\/revisions\/30652"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}