\u25c7 It forms about 83 per cent of the earth’s volume and holds 67% of the earth\u2019s mass.<\/p>\n\n\n\n
\u25c7 It extends from Moho\u2019s discontinuity to a depth of 2,900 km.<\/p>\n\n\n\n
\u25c7 The density of the upper mantle varies between 2.9 g\/cm3 and 3.3 g\/cm3.<\/p>\n\n\n\n
\u25c7 The lower mantle extends beyond the asthenosphere. It is in a solid state.<\/p>\n\n\n\n
\u25c7 The density ranges from 3.3 g\/cm3 to 5.7 g\/cm3 in the lower mantle.<\/p>\n\n\n\n
\u25c7 The mantle is composed of silicate rocks that are rich in iron.<\/p>\n\n\n\n
\u25c7 Regarding its constituent elements, the mantle is made up of 45% oxygen, 21% silicon, and 23% magnesium (OSM).<\/p>\n\n\n\n
\u25c7 Temperatures range from approximately 200 \u00b0C at the upper boundary with the crust to approximately 4,000 \u00b0C at the core-mantle boundary.<\/p>\n\n\n\n
\u25c7 Because of the temperature difference, there is a convective material circulation in the mantle (although solid, the high temperatures within the mantle cause the silicate material to be sufficiently ductile).<\/p>\n","protected":false},"excerpt":{"rendered":"
THE MANTLE \u25c7 It forms about 83 per cent of the earth’s volume and holds 67% of the earth\u2019s mass. \u25c7 It extends from Moho\u2019s discontinuity to a depth of 2,900 km. \u25c7 The density of the upper mantle varies between 2.9 g\/cm3 and 3.3 g\/cm3. \u25c7 The lower mantle extends beyond the asthenosphere. It […]<\/p>\n","protected":false},"author":894,"featured_media":89399,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1755],"tags":[1797],"class_list":["post-89398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-upsc-important-topics","tag-upsc-daily-important-topic"],"_links":{"self":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/89398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/users\/894"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/comments?post=89398"}],"version-history":[{"count":1,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/89398\/revisions"}],"predecessor-version":[{"id":89400,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/89398\/revisions\/89400"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media\/89399"}],"wp:attachment":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media?parent=89398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/categories?post=89398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/tags?post=89398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}