{"id":15385,"date":"2025-04-08T05:42:09","date_gmt":"2025-04-08T05:42:09","guid":{"rendered":"https:\/\/exam.pscnotes.com\/current-affairs\/?p=15385"},"modified":"2025-04-08T05:44:42","modified_gmt":"2025-04-08T05:44:42","slug":"primordial-earth-crust","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/","title":{"rendered":"Primordial Earth Crust"},"content":{"rendered":"<ul>\n<li>\n<p><strong>Hadean Protocrust Redefined:<\/strong> A new study challenges the established understanding of when plate tectonics began.<\/p>\n<\/li>\n<li>\n<p><strong>Early Chemical Signatures:<\/strong> Researchers found chemical signatures previously linked to plate tectonics were present in the Hadean protocrust, Earth&#8217;s earliest crust.<\/p>\n<\/li>\n<li>\n<p><strong>Hadean Eon Setting:<\/strong> The Hadean Eon (4.6 to 4 billion years ago) featured a partially molten surface, intense volcanic activity, and meteorite bombardment.<\/p>\n<\/li>\n<li>\n<p><strong>Crust Formation:<\/strong> As the magma ocean cooled, a flaky, unstable crust formed, with thicker sections evolving into proto-continents.<\/p>\n<\/li>\n<li>\n<p><strong>Plate Tectonics Questioned:<\/strong> The study suggests that processes other than <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> plate subduction may have created these signatures in the early Earth.<\/p>\n<\/li>\n<li>\n<p><strong>Research Methodology:<\/strong> The study combined models and laboratory research.<\/p>\n<\/li>\n<li>\n<p><strong>Need for Validation:<\/strong> Independent research is needed to validate the study&#8217;s findings.<\/p>\n<\/li>\n<li>\n<p><strong>Study Lead:<\/strong> Macquarie University in Australia led the <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> international research team.<\/p>\n<\/li>\n<li>\n<p><strong>Importance of Hadean Protocrust:<\/strong> Understanding the Hadean protocrust provides insight into early Earth formation, crustal evolution, and potentially the conditions for early life.<\/p>\n<\/li>\n<li>\n<p><strong>Evidence Location:<\/strong> Evidence of Hadean protocrust is primarily found in zircon crystals from the Jack Hills, Australia.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Hadean Protocrust Redefined: A new study challenges the established understanding of when plate tectonics began. Early Chemical Signatures: Researchers found chemical signatures Subscribe on YouTube previously linked to plate tectonics were present in the Hadean protocrust, Earth&#8217;s earliest crust. Hadean Eon Setting: The Hadean Eon (4.6 to 4 billion years ago) featured a partially molten &#8230; <a title=\"Primordial Earth Crust\" class=\"read-more\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/\">Read more <span class=\"screen-reader-text\">Primordial Earth Crust<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":15422,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[595],"tags":[1269],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Primordial Earth Crust - Current Affairs Exam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Primordial Earth Crust\" \/>\n<meta property=\"og:description\" content=\"Hadean Protocrust Redefined: A new study challenges the established understanding of when plate tectonics began. Early Chemical Signatures: Researchers found chemical signatures previously linked to plate tectonics were present in the Hadean protocrust, Earth&#8217;s earliest crust. Hadean Eon Setting: The Hadean Eon (4.6 to 4 billion years ago) featured a partially molten surface, intense Subscribe ... Read more Primordial Earth Crust\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/\" \/>\n<meta property=\"og:site_name\" content=\"Current Affairs Exam\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-08T05:42:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-08T05:44:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/exam.pscnotes.com\/current-affairs\/wp-content\/uploads\/sites\/307\/2025\/04\/15385_1744091080.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"867\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Primordial Earth Crust - Current Affairs Exam","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/","og_locale":"en_US","og_type":"article","og_title":"Primordial Earth Crust","og_description":"Hadean Protocrust Redefined: A new study challenges the established understanding of when plate tectonics began. Early Chemical Signatures: Researchers found chemical signatures previously linked to plate tectonics were present in the Hadean protocrust, Earth&#8217;s earliest crust. Hadean Eon Setting: The Hadean Eon (4.6 to 4 billion years ago) featured a partially molten surface, intense Subscribe ... Read more Primordial Earth Crust","og_url":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/","og_site_name":"Current Affairs Exam","article_published_time":"2025-04-08T05:42:09+00:00","article_modified_time":"2025-04-08T05:44:42+00:00","og_image":[{"width":867,"height":650,"url":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-content\/uploads\/sites\/307\/2025\/04\/15385_1744091080.jpg","type":"image\/jpeg"}],"author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/","url":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/","name":"Primordial Earth Crust - Current Affairs Exam","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/current-affairs\/#website"},"primaryImageOfPage":{"@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/#primaryimage"},"image":{"@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/#primaryimage"},"thumbnailUrl":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-content\/uploads\/sites\/307\/2025\/04\/15385_1744091080.jpg","datePublished":"2025-04-08T05:42:09+00:00","dateModified":"2025-04-08T05:44:42+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/current-affairs\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/#primaryimage","url":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-content\/uploads\/sites\/307\/2025\/04\/15385_1744091080.jpg","contentUrl":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-content\/uploads\/sites\/307\/2025\/04\/15385_1744091080.jpg","width":867,"height":650},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/primordial-earth-crust\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/current-affairs\/"},{"@type":"ListItem","position":2,"name":"Primordial Earth Crust"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/#website","url":"https:\/\/exam.pscnotes.com\/current-affairs\/","name":"Current Affairs Exam","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/current-affairs\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/current-affairs\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/current-affairs\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/posts\/15385"}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=15385"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/posts\/15385\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/media\/15422"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=15385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=15385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=15385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}