{"id":16939,"date":"2023-11-11T11:33:40","date_gmt":"2023-11-11T06:03:40","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=16939"},"modified":"2025-04-05T01:04:01","modified_gmt":"2025-04-04T19:34:01","slug":"phreatomagmatic-eruption","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/phreatomagmatic-eruption\/","title":{"rendered":"Phreatomagmatic eruption"},"content":{"rendered":"<h2>About Phreatomagmatic eruption<\/h2>\n<ul>\n<li>A new island near Japan&#8217;s Ogasawara island chain was formed by a phreatomagmatic eruption.<\/li>\n<li>It is an eruption that\u00a0involves both magma and water.<\/li>\n<li>It typically interacts explosively leading to concurrent ejection of steam and pyroclastic fragments.<\/li>\n<li>Phreatomagmatic ash is formed by the same mechanism over a wide range of basic and acidic compositions.<\/li>\n<li>A blocky and uniform crust with low vesicle content is formed.<\/li>\n<li>Deposits from phreatomagmatic eruptions are thought to be better classified and finer-grained than those from magmatic eruptions.<\/li>\n<li>This is the result of higher fragmentation of phreatomagmatic eruptions.<\/li>\n<\/ul>\n<h2>Key facts about Ogasawara Islands<\/h2>\n<ul>\n<li>The Ogasawara Islands are located in the\u00a0North-Western Pacific Ocean.<\/li>\n<li>It is also known as the Bonin Islands.<\/li>\n<li>It is a volcanic arc comprising more than 30 islands and islets.\u00a0<\/li>\n<li>The landscape is dominated by subtropical forest types and sclerophyllous shrublands surrounded by steep cliffs.\u00a0<\/li>\n<li>It is one of the famous\u00a0UNESCO World Heritage sites of Japan.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is a volcano?<\/h3>\n<p>A volcano is a geological formation on the Earth&#8217;s surface that occurs when magma, volcanic ash, and gases escape from below the Earth&#8217;s crust through an opening called a vent. Volcanoes can take various forms, ranging from stratovolcanoes (composite volcanoes) to shield volcanoes and cinder cone volcanoes.<\/p>\n<p><strong>Source:<\/strong> <a href=\"https:\/\/timesofindia.indiatimes.com\/world\/rest-of-world\/new-island-is-born-in-japan-after-undersea-volcanic-eruption\/articleshow\/105108161.cms?from=mdr\" target=\"_blank\" rel=\"nofollow noopener\">New island is born in Japan after undersea volcanic eruption<\/a>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Phreatomagmatic eruption  typically interacts explosively leading to concurrent ejection of steam and pyroclastic fragments.<\/p>\n","protected":false},"author":5,"featured_media":16940,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-16939","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\/16939","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=16939"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16939\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/16940"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=16939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=16939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=16939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}