{"id":18090,"date":"2023-12-13T10:59:48","date_gmt":"2023-12-13T05:29:48","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=18090"},"modified":"2025-04-05T08:37:13","modified_gmt":"2025-04-05T03:07:13","slug":"fault-line","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/fault-line\/","title":{"rendered":"What is a Fault Line?"},"content":{"rendered":"<h2>About Fault Line<\/h2>\n<ul>\n<li>It is a line determined by the intersection of a geological fault\u00a0and the\u00a0earth&#8217;s surface.<\/li>\n<li>A fault is a fracture or zone of fractures\u00a0between two blocks of rock.\u00a0<\/li>\n<li>This is\u00a0caused by the stresses created as sections of a plate (or two plates)\u00a0are moving in different directions.\u00a0<\/li>\n<li>All\u00a0faults are related to the movement of Earth&#8217;s tectonic plates. The\u00a0biggest faults mark the boundary between two plates.\u00a0<\/li>\n<li>Faults allow\u00a0the\u00a0blocks to move\u00a0relative to each other.<\/li>\n<li>This movement\u00a0may occur rapidly, in the form of an\u00a0earthquake,\u00a0or it may occur\u00a0slowly,\u00a0in the form of creep.\u00a0<\/li>\n<li>Faults\u00a0may range in length from a few millimeters to\u00a0thousands of kilometers,\u00a0such as the San Andreas Fault in California and the\u00a0Anatolian Fault in Turkey, both of which are visible from space.\u00a0<\/li>\n<li>Most faults\u00a0produce repeated displacements over geologic time.\u00a0<\/li>\n<li>The\u00a0fault surface can be horizontal, vertical\u00a0or some arbitrary\u00a0angle in between.<\/li>\n<li>Earth scientists use the\u00a0angle of the fault with respect to the surface (known as the dip) and the direction of slip along the fault to classify faults.<\/li>\n<li>There are a number of different types of faults, but most can be divided into\u00a0three categories: strike-slip faults, normal faults, and thrust faults.<\/li>\n<li>Strike-slip fault:\n<ul>\n<li>It occurs in an area where\u00a0two plates are sliding past horizontally with little to\u00a0no vertical movement.\u00a0<\/li>\n<li>Strike-slip faults are found\u00a0in California, the San Andreas Fault being the most famous, which has caused many powerful earthquakes.<\/li>\n<\/ul>\n<\/li>\n<li>Normal fault:\n<ul>\n<li>Normal faults cracks where\u00a0one mass of rock slides downward and pulls away from another mass of rock.<\/li>\n<li>Normal faults\u00a0create space. Two blocks of crust pull apart,\u00a0stretching the crust into a valley.\u00a0<\/li>\n<li>The\u00a0Basin and Range Province in North America and the\u00a0East African Rift Zone are two well-known regions where normal faults are spreading apart Earth&#8217;s crust.<\/li>\n<\/ul>\n<\/li>\n<li>Reverse faults:\n<ul>\n<li>Reverse faults also\u00a0called thrust faults,\u00a0slide one block of crust on top of another.\u00a0<\/li>\n<li>This involves\u00a0upward movement\u00a0as the two\u00a0plates collide and buckle upwards.<\/li>\n<li>These faults are commonly\u00a0found in collisions zones, where tectonic plates push up mountain ranges\u00a0such as the Himalayas and the Rocky Mountains.\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is a tectonic plate?<\/h3>\n<p>A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Due to the convection of the asthenosphere and lithosphere, the plates move relative to each other. Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest. Plate thickness also varies greatly, ranging from less than 15 km for young oceanic lithosphere to about 200 km or more for ancient continental lithosphere (for example, the interior parts of North and South America).<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/phys.org\/news\/2023-12-discovery-kilometer-fault-line-canada.html#google_vignette\" target=\"_blank\" rel=\"nofollow noopener\"><u>Discovery of 72-kilometer fault line on Canada&#8217;s Vancouver Island<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fault Line is a line determined by the intersection of a geological fault and the earth&#8217;s surface.<\/p>\n","protected":false},"author":5,"featured_media":18091,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-18090","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\/18090","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=18090"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/18090\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/18091"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=18090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=18090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=18090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}