{"id":20812,"date":"2024-02-23T08:05:59","date_gmt":"2024-02-23T02:35:59","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=20812"},"modified":"2025-04-06T07:51:23","modified_gmt":"2025-04-06T02:21:23","slug":"singhbhum-craton","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/singhbhum-craton\/","title":{"rendered":"Singhbhum Craton"},"content":{"rendered":"<h2>About Singhbhum Craton<\/h2>\n<ul>\n<li>It is a vast swathe of rocky land that stretches mainly across parts of\u00a0Jharkhand and Odisha, between the\u00a0Chhota Nagpur plateau and the Eastern Ghats.<\/li>\n<li>This ancient part of the Earth\u2019s crust has been found in previous research to date back to\u00a03.5 billion years ago.<\/li>\n<li>The craton\u2019s oldest rock assemblages are largely\u00a0volcanic and sedimentary rocks also known as\u00a0greenstone successions.<\/li>\n<li>Greenstones are rock assemblages made up mostly of sub-marine volcanic rocks with minor sedimentary rocks.<\/li>\n<li>The geology of this area shares stark similarity with the greenstone belts documented in\u00a0South Africa\u2019s Barberton and Nondweni areas and the\u00a0Pilbara Craton in\u00a0western Australia.<\/li>\n<li>All these areas experienced widespread\u00a0submarine mafic \u2014 meaning high in magnesium oxide \u2014 volcanic eruptions between 3.5 and 3.3 billion years ago, preserved as pillowed lava and komatiites.<\/li>\n<li>Significance\n<ul>\n<li>They offer a clearer picture of\u00a0Earth\u2019s early tectonic activities during the Archaean times, contributing to our understanding of the planet\u2019s formative years.<\/li>\n<li>The Singhbhum Craton\u2019s\u00a0unique geological features, including its greenstone belts, provide invaluable information about Earth\u2019s surface and atmospheric processes.<\/li>\n<li>This is crucial for hypothesising early habitable conditions and the emergence of life on Earth.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>What are Cratons?<\/h2>\n<ul>\n<li>Cratons are the\u00a0oldest and most stable parts of the\u00a0Earth&#8217;s crust, acting as the bedrock of continents.<\/li>\n<li>These are pieces of ancient continents that formed billions of years ago.<\/li>\n<li>Studying them offers a window into how processes within and on the surface of Earth operated in the past.<\/li>\n<li>They host a variety of different groups of rocks, including greenstones and granites.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is Geology?<\/h3>\n<p>Geology is the study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them. It includes the study of organisms that have inhabited our planet. An important part of geology is the study of how Earth&#8217;s materials, structures, processes and organisms have changed over time.<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/www.downtoearth.org.in\/blog\/science-technology\/earth-s-early-evolution-fresh-insights-from-rocks-formed-3-5-billion-years-ago-94604\" target=\"_blank\" rel=\"nofollow noopener\">Earth\u2019s early evolution: Fresh insights from rocks formed 3.5 billion years ago<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Singhbhum Craton is a vast swathe of rocky land that stretches mainly across parts of Jharkhand and Odisha, between the Chhota Nagpur plateau and the Eastern Ghats.<\/p>\n","protected":false},"author":5,"featured_media":20813,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-20812","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=20812"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/20812\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/20813"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=20812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=20812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=20812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}