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interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Orozir_d%C3%B6vr%C3%BC" title="Orozir dövrü – Azerbaijani" lang="az" hreflang="az" data-title="Orozir dövrü" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%90%D1%80%D0%B0%D0%B7%D1%96%D1%80%D1%8B%D0%B9" title="Аразірый – Belarusian" lang="be" hreflang="be" data-title="Аразірый" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Orosirieg" title="Orosirieg – Breton" lang="br" hreflang="br" data-title="Orosirieg" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Orosiri%C3%A0" title="Orosirià – Catalan" lang="ca" hreflang="ca" data-title="Orosirià" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Orosirium" title="Orosirium – German" lang="de" hreflang="de" data-title="Orosirium" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Per%C3%ADodo_Oros%C3%ADrico" title="Período Orosírico – Spanish" lang="es" hreflang="es" data-title="Período Orosírico" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Orosiriar" title="Orosiriar – Basque" lang="eu" hreflang="eu" data-title="Orosiriar" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D9%88%D8%B1%D9%88%D8%B3%DB%8C%D8%B1%DB%8C%D9%86" title="اوروسیرین – Persian" lang="fa" hreflang="fa" data-title="اوروسیرین" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Orosirien" title="Orosirien – French" lang="fr" hreflang="fr" data-title="Orosirien" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%98%A4%EB%A1%9C%EC%84%B8%EC%9D%B4%EB%9D%BC%EA%B8%B0" title="오로세이라기 – Korean" lang="ko" hreflang="ko" data-title="오로세이라기" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%93%E0%A4%B0%E0%A5%8B%E0%A4%B8%E0%A4%BF%E0%A4%B0%E0%A4%BF%E0%A4%AF%E0%A4%BE%E0%A4%88_%E0%A4%95%E0%A4%B2%E0%A5%8D%E0%A4%AA" title="ओरोसिरियाई कल्प – Hindi" lang="hi" hreflang="hi" data-title="ओरोसिरियाई कल्प" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Orosirij" title="Orosirij – Croatian" lang="hr" hreflang="hr" data-title="Orosirij" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Orosirium" title="Orosirium – Indonesian" lang="id" hreflang="id" data-title="Orosirium" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Orosiriano" title="Orosiriano – Italian" lang="it" hreflang="it" data-title="Orosiriano" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Oroseira" title="Oroseira – Malay" lang="ms" hreflang="ms" data-title="Oroseira" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Orosirium" title="Orosirium – Dutch" lang="nl" hreflang="nl" data-title="Orosirium" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AA%E3%83%AD%E3%82%B7%E3%83%AA%E3%82%A2%E3%83%B3" title="オロシリアン – Japanese" lang="ja" hreflang="ja" data-title="オロシリアン" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Orosirium" title="Orosirium – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Orosirium" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Orosir" title="Orosir – Polish" lang="pl" hreflang="pl" data-title="Orosir" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Oros%C3%ADrico" title="Orosírico – Portuguese" lang="pt" hreflang="pt" data-title="Orosírico" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D1%80%D0%BE%D0%B7%D0%B8%D1%80%D0%B8%D0%B9" title="Орозирий – Russian" lang="ru" hreflang="ru" data-title="Орозирий" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Orosirian" title="Orosirian – Simple English" lang="en-simple" hreflang="en-simple" data-title="Orosirian" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Orosirij" title="Orosirij – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Orosirij" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A2%E0%B8%B8%E0%B8%84%E0%B8%AD%E0%B8%AD%E0%B9%82%E0%B8%A3%E0%B8%8B%E0%B8%B5%E0%B9%80%E0%B8%A3%E0%B8%B5%E0%B8%A2%E0%B8%99" title="ยุคออโรซีเรียน – Thai" lang="th" hreflang="th" data-title="ยุคออโรซีเรียน" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9E%D1%80%D0%BE%D0%B7%D0%B8%D1%80%D1%96%D0%B9" title="Орозирій – Ukrainian" lang="uk" hreflang="uk" data-title="Орозирій" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/K%E1%BB%B7_Orosira" title="Kỷ Orosira – Vietnamese" lang="vi" hreflang="vi" data-title="Kỷ Orosira" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%80%A0%E5%B1%B1%E7%B4%80" title="造山紀 – Cantonese" lang="yue" hreflang="yue" data-title="造山紀" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%80%A0%E5%B1%B1%E7%BA%AA" title="造山纪 – Chinese" lang="zh" hreflang="zh" data-title="造山纪" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q597383#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> 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.infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="width:23em;"><tbody><tr><th colspan="2" class="infobox-above" style="padding:0.25em 0.33em 0.33em;line-height:1.2em;font-size:1.25em;background:rgb(247,104,152);">Orosirian</th></tr><tr><td colspan="2" class="infobox-subheader"><span class="noprint"><span style="display:inline-block;"></span><span style="display:inline-block;">2050 – 1800 <a href="/wiki/Year#SI_prefix_multipliers" title="Year">Ma</a></span> <span style="display:inline-block;"></span><div id="Timeline-row" style="margin: 4px auto 0; clear:both; width:250px; padding:0px; height:18px; overflow:visible; border:1px #666; border-style:solid none; font-size:small; position:relative; z-index:0;"> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(153,192,141); left:220.50580249617px; width:15.704948543902px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(103,197,202); left:236.21075104007px; width:10.1763739873px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(242,249,29); left:246.38712502737px; width:3.6128749726297px;"></div> <div style="position:absolute; height:6px; text-align:center; background-color:rgb(154,217,221); left:220.50580249617px; width:29.494197503832px;"><a href="/wiki/Phanerozoic" title="Phanerozoic"><span style="color:black;">Pha.</span></a></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(247,67,112); left:113.14867527918px; width:49.266476899496px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(253,180,98); left:162.41515217867px; width:32.844317932998px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(254,179,66); left:195.25947011167px; width:25.246332384497px;"></div> <div style="position:absolute; height:6px; text-align:center; background-color:rgb(247,53,99); left:113.14867527918px; width:107.35712721699px;"><a href="/wiki/Proterozoic" title="Proterozoic"><span style="color:black;">Proterozoic</span></a></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(218,3,127); left:29.340924020145px; width:23.59316838187px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(244,68,159); left:52.934092402014px; width:21.896211955332px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(247,104,169); left:74.830304357346px; width:21.896211955332px;"></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(249,155,193); left:96.726516312678px; width:16.422158966499px;"></div> <div style="position:absolute; height:6px; text-align:center; background-color:rgb(240,4,127); left:29.340924020145px; width:83.807751259032px;"><a href="/wiki/Archean" title="Archean"><span style="color:black;">Archean</span></a></div> <div style="position:absolute; height:12px; top:6px; text-align:center; background-color:rgb(174,2,126); left:0px; width:29.340924020145px;"></div> <div style="position:absolute; height:6px; text-align:center; background-color:rgb(174,2,126); left:0px; width:29.340924020145px;"><a href="/wiki/Hadean" title="Hadean"><span style="color:white;">Had.</span></a></div> <div id="end-border" style="position:absolute; height:100%; background-color:#666; width:1px; left:249px"></div><div style="margin:0 auto; line-height:0; clear:both; width:250px; padding:0px; height:8px; overflow:visible; background-color:transparent; position:relative; top:-4px; z-index:100;"><div style="position:absolute; height:8px; left:137.78191372892px; width:13.685132472082px; background-color:#360; opacity:0.42;"></div> <div style="position:absolute; height:8px; left:137.78191372892px; width:13.685132472082px; background-color:#360; opacity:1;"></div> <div style="position:absolute; height:6px; top:1px; left:138.78191372892px; width:11.685132472082px; background-color:#6c3;"></div> </div> </div></span></td></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:2000_Ma_paleoglobe.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/2000_Ma_paleoglobe.png/250px-2000_Ma_paleoglobe.png" decoding="async" width="250" height="115" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/2000_Ma_paleoglobe.png/375px-2000_Ma_paleoglobe.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/2000_Ma_paleoglobe.png/500px-2000_Ma_paleoglobe.png 2x" data-file-width="3814" data-file-height="1754" /></a></span><div class="infobox-caption">A map of Earth as it appeared during the early Orosirian, c. 2 Ga<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="Description on Wikimedia Commons page is "own work" with no cited sources (June 2024)">citation needed</span></a></i>]</sup></div></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ededed;">Chronology</th></tr><tr><td colspan="2" class="infobox-full-data"><div style="font-size:14px"><table id="Container" role="presentation" class="toccolours searchaux" style="text-align:left;padding:0 0.5em;border-style:none;margin:auto;overflow:hidden;min-width:23.550em"><tbody><tr style="vertical-align:top"><td id="Scale" style="padding:0;margin:0.7em 0 0.7em 0;width:4.2em;position:relative;float:left;font-size:100%;height:320px;border-right:1px solid #242020"><div style="float:right;position:absolute;right:-1px;top:308.97px;transform:translateY(-50%)"><span style="font-size:90%">−2060 —</span></div><div style="float:right;position:absolute;right:-1px;top:297.93px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:286.90px;transform:translateY(-50%)"><span style="font-size:90%">−2040 —</span></div><div style="float:right;position:absolute;right:-1px;top:275.86px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:264.83px;transform:translateY(-50%)"><span style="font-size:90%">−2020 —</span></div><div style="float:right;position:absolute;right:-1px;top:253.79px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:242.76px;transform:translateY(-50%)"><span style="font-size:90%">−2000 —</span></div><div style="float:right;position:absolute;right:-1px;top:231.72px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:220.69px;transform:translateY(-50%)"><span style="font-size:90%">−1980 —</span></div><div style="float:right;position:absolute;right:-1px;top:209.66px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:198.62px;transform:translateY(-50%)"><span style="font-size:90%">−1960 —</span></div><div style="float:right;position:absolute;right:-1px;top:187.59px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:176.55px;transform:translateY(-50%)"><span style="font-size:90%">−1940 —</span></div><div style="float:right;position:absolute;right:-1px;top:165.52px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:154.48px;transform:translateY(-50%)"><span style="font-size:90%">−1920 —</span></div><div style="float:right;position:absolute;right:-1px;top:143.45px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:132.41px;transform:translateY(-50%)"><span style="font-size:90%">−1900 —</span></div><div style="float:right;position:absolute;right:-1px;top:121.38px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:110.34px;transform:translateY(-50%)"><span style="font-size:90%">−1880 —</span></div><div style="float:right;position:absolute;right:-1px;top:99.31px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:88.28px;transform:translateY(-50%)"><span style="font-size:90%">−1860 —</span></div><div style="float:right;position:absolute;right:-1px;top:77.24px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:66.21px;transform:translateY(-50%)"><span style="font-size:90%">−1840 —</span></div><div style="float:right;position:absolute;right:-1px;top:55.17px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:44.14px;transform:translateY(-50%)"><span style="font-size:90%">−1820 —</span></div><div style="float:right;position:absolute;right:-1px;top:33.10px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:22.07px;transform:translateY(-50%)"><span style="font-size:90%">−1800 —</span></div><div style="float:right;position:absolute;right:-1px;top:11.03px;transform:translateY(-50%)"><span style="font-size:90%">–</span></div><div style="float:right;position:absolute;right:-1px;top:0.00px;transform:translateY(-50%)"><span style="font-size:90%">−1780 —</span></div></td><td id="Timeline" class="toccolours notheme" style="padding:0px;margin:0.7em 0 0.7em 0;position:relative;font-size:100%;width:7.5em;height:320px;float:left;border:none;background-color:#000000"><div class="notheme" style="font-size:100%;background-color:rgb(247,67,112);border-width:0px;border-style:solid none;position:absolute;text-align:center;margin:0;padding:0;top:0.000px;height:320.000px;left:0.000em;width:1.125em"><div class="notheme" style="position:relative;text-align:center;vertical-align:middle;display:block;bottom:-160.000px;transform:translateY(-50%);z-index:5"><b><style data-mw-deduplicate="TemplateStyles:r1231500821">@supports(writing-mode:vertical-lr){.mw-parser-output .ts-vertical-text{letter-spacing:-0.12em;line-height:1em;text-orientation:upright;writing-mode:vertical-lr;width:1em}}</style><span class="ts-vertical-text" style=""><a href="/wiki/Paleoproterozoic" title="Paleoproterozoic">Paleoproterozoic</a></span></b></div></div><div class="notheme" style="font-size:100%;background-color:rgb(247,91,137);border-width:0px;border-style:solid none;position:absolute;text-align:center;margin:0;padding:0;top:297.931px;height:22.069px;left:1.200em;width:6.300em"><div class="notheme" style="position:relative;text-align:center;vertical-align:middle;display:block;bottom:-11.034px;transform:translateY(-50%);z-index:5"><b><a href="/wiki/Rhyacian" title="Rhyacian">Rhyacian</a></b></div></div><div class="notheme" style="font-size:100%;background-color:rgb(247,104,152);border-width:1px;border-style:solid none;position:absolute;text-align:center;margin:0;padding:0;top:22.069px;height:273.862px;left:1.200em;width:6.300em"><div class="notheme" style="position:relative;text-align:center;vertical-align:middle;display:block;bottom:-136.931px;transform:translateY(-50%);z-index:5"><b><a class="mw-selflink selflink">Orosirian</a></b></div></div><div class="notheme" style="font-size:100%;background-color:rgb(248,117,167);border-width:0px;border-style:solid none;position:absolute;text-align:center;margin:0;padding:0;top:0.000px;height:22.069px;left:1.200em;width:6.300em"><div class="notheme" style="position:relative;text-align:center;vertical-align:middle;display:block;bottom:-11.034px;transform:translateY(-50%);z-index:5"><b><a href="/wiki/Statherian" title="Statherian">Statherian</a></b></div></div></td><td id="Annotations" style="padding:0;margin:0.7em 0 0.7em 0;float:left;position:relative;width:10.150em;height:320px"><table role="presentation" style="position:absolute;z-index:15;top:22.069px;left:0em;transform:translateY(-50%);padding:0;margin:0;font-size:100%"><tbody><tr><td style="padding:0;text-align:left;vertical-align:middle"><span style="color:var( --color-base, #000)">←</span></td><td style="padding:0;text-align:left;vertical-align:middle"><div class="annot-nudge" style="font-size:100%;float:left;position:relative;top:-0.4em"><div style="z-index:10;font-size:85%;color:var( --color-base, #000);display:block;line-height:105%;bottom:0">Beginning of the <a href="/wiki/Boring_Billion" title="Boring Billion">Boring Billion</a></div></div></td></tr></tbody></table><table role="presentation" style="position:absolute;z-index:15;top:77.241px;left:0em;transform:translateY(-50%);padding:0;margin:0;font-size:100%"><tbody><tr><td style="padding:0;text-align:left;vertical-align:middle"><span style="color:var( --color-base, #000)">←</span></td><td style="padding:0;text-align:left;vertical-align:middle"><div class="annot-nudge" style="font-size:100%;float:left;position:relative;top:0.4em"><div style="z-index:10;font-size:85%;color:var( --color-base, #000);display:block;line-height:105%;bottom:0"><a href="/wiki/Sudbury_Basin" title="Sudbury Basin">Sudbury Basin</a> structure created by asteroid impact?</div></div></td></tr></tbody></table><table role="presentation" style="position:absolute;z-index:15;top:268.138px;left:0em;transform:translateY(-50%);padding:0;margin:0;font-size:100%"><tbody><tr><td style="padding:0;text-align:left;vertical-align:middle"><span style="color:var( --color-base, #000)">←</span></td><td style="padding:0;text-align:left;vertical-align:middle"><div class="annot-nudge" style="font-size:100%;float:left;position:relative;top:0.4em"><div style="z-index:10;font-size:85%;color:var( --color-base, #000);display:block;line-height:105%;bottom:0"><a href="/wiki/Vredefort_impact_structure" title="Vredefort impact structure">Vredefort impact structure</a> created by asteroid impact</div></div></td></tr></tbody></table><table role="presentation" style="position:absolute;z-index:15;top:44.138px;left:0em;transform:translateY(-50%);padding:0;margin:0;font-size:100%"><tbody><tr><td style="padding:0;text-align:left;vertical-align:middle"><span style="color:var( --color-base, #000)">←</span></td><td style="padding:0;text-align:left;vertical-align:middle"><div class="annot-nudge" style="font-size:100%;float:left;position:relative;top:0em"><div style="z-index:10;font-size:85%;color:var( --color-base, #000);display:block;line-height:105%;bottom:0">Supercontinent <a href="/wiki/Columbia_(supercontinent)" title="Columbia (supercontinent)">Columbia</a> formed</div></div></td></tr></tbody></table><table role="presentation" style="position:absolute;z-index:15;top:242.759px;left:0em;transform:translateY(-50%);padding:0;margin:0;font-size:100%"><tbody><tr><td style="padding:0;text-align:left;vertical-align:middle"><span style="color:var( --color-base, #000)">←</span></td><td style="padding:0;text-align:left;vertical-align:middle"><div class="annot-nudge" style="font-size:100%;float:left;position:relative;top:-0.4em"><div style="z-index:10;font-size:85%;color:var( --color-base, #000);display:block;line-height:105%;bottom:0">End of <a href="/wiki/Great_Oxidation_Event" title="Great Oxidation Event">Great Oxidation Event</a></div></div></td></tr></tbody></table></td></tr><tr><td id="Caption" colspan="3" style="padding:0;margin:0 0.2em 0.7em 0.2em"><div id="Caption" class="toccolours" style="margin:0 auto;float:left;border-style:none;clear:both;text-align:center;width:21.000em"><b>Events of the Orosirian Period.</b><br />Vertical axis scale: <a href="/wiki/Megaannus" class="mw-redirect" title="Megaannus">Millions of years ago</a></div></td></tr></tbody></table></div></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ededed;">Etymology</th></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Name formality</th><td class="infobox-data">Formal</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ededed;">Usage information</th></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Celestial body</th><td class="infobox-data"><a href="/wiki/Geological_history_of_Earth" title="Geological history of Earth">Earth</a></td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Regional usage</th><td class="infobox-data">Global (<a href="/wiki/International_Commission_on_Stratigraphy" title="International Commission on Stratigraphy">ICS</a>)</td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Time scale(s) used</th><td class="infobox-data">ICS Time Scale</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ededed;">Definition</th></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Chronological unit</th><td class="infobox-data"><a href="/wiki/Geological_period" class="mw-redirect" title="Geological period">Period</a></td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Stratigraphic unit</th><td class="infobox-data"><a href="/wiki/System_(stratigraphy)" title="System (stratigraphy)">System</a></td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Time span formality</th><td class="infobox-data">Formal</td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Lower boundary definition</th><td class="infobox-data">Defined chronometrically</td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Lower GSSA ratified</th><td class="infobox-data">1991<sup id="cite_ref-Plumb1991_1-0" class="reference"><a href="#cite_note-Plumb1991-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Upper boundary definition</th><td class="infobox-data">Defined chronometrically</td></tr><tr><th scope="row" class="infobox-label" style="width:10em;">Upper GSSA ratified</th><td class="infobox-data">1991<sup id="cite_ref-Plumb1991_1-1" class="reference"><a href="#cite_note-Plumb1991-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr></tbody></table> <p>The <b>Orosirian Period</b> (<span class="rt-commentedText nowrap"><style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><span class="IPA-label IPA-label-small"> </span><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˌ/: secondary stress follows">ˌ</span><span title="/ɒr/: 'or' in 'moral'">ɒr</span><span title="/oʊ/: 'o' in 'code'">oʊ</span><span title="/ˈ/: primary stress follows">ˈ</span><span title="'s' in 'sigh'">s</span><span title="/ɪər/: 'ear' in 'near'">ɪər</span><span title="/i/: 'y' in 'happy'">i</span><span title="/ən/: 'on' in 'button'">ən</span></span>/</a></span></span>; <a href="/wiki/Ancient_Greek_language" class="mw-redirect" title="Ancient Greek language">Ancient Greek</a>: <span lang="grc">ὀροσειρά</span>, <small><a href="/wiki/Romanization_of_Ancient_Greek" class="mw-redirect" title="Romanization of Ancient Greek">romanized</a>: </small><span title="Ancient Greek-language romanization"><i lang="grc-Latn">oroseirá</i></span>, meaning "mountain range") is the third <a href="/wiki/Geologic_period" class="mw-redirect" title="Geologic period">geologic period</a> in the <a href="/wiki/Paleoproterozoic" title="Paleoproterozoic">Paleoproterozoic</a> <a href="/wiki/Era_(geology)" class="mw-redirect" title="Era (geology)">Era</a> and lasted from 2050 <a href="/wiki/Annum" class="mw-redirect" title="Annum">Mya</a> to 1800 Mya (million years ago).<sup id="cite_ref-HuddartStott2013_2-0" class="reference"><a href="#cite_note-HuddartStott2013-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Instead of being based on <a href="/wiki/Stratigraphy" title="Stratigraphy">stratigraphy</a>, these dates are defined <a href="/wiki/Absolute_dating" title="Absolute dating">chronometrically</a>. </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Vredefort_Dome_STS51I-33-56AA.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Vredefort_Dome_STS51I-33-56AA.jpg/220px-Vredefort_Dome_STS51I-33-56AA.jpg" decoding="async" width="220" height="221" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Vredefort_Dome_STS51I-33-56AA.jpg/330px-Vredefort_Dome_STS51I-33-56AA.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Vredefort_Dome_STS51I-33-56AA.jpg/440px-Vredefort_Dome_STS51I-33-56AA.jpg 2x" data-file-width="2124" data-file-height="2137" /></a><figcaption><a href="/wiki/Vredefort_impact_structure" title="Vredefort impact structure">Vredefort impact structure</a> is believed to have formed in this period</figcaption></figure> <p>The later half of the period was an episode of intensive <a href="/wiki/Orogeny" title="Orogeny">orogeny</a> on virtually all <a href="/wiki/Continent" title="Continent">continents</a>. </p><p>Two of the largest known <a href="/wiki/Impact_event" title="Impact event">impact events</a> on Earth occurred during the Orosirian. Early in the period, 2023 Mya, a large <a href="/wiki/Asteroid" title="Asteroid">asteroid</a> collision created the <a href="/wiki/Vredefort_impact_structure" title="Vredefort impact structure">Vredefort impact structure</a>. The event that created the <a href="/wiki/Sudbury_Basin" title="Sudbury Basin">Sudbury Basin</a> structure occurred near the end of the period, 1850 Mya. </p><p>For the time period from about 2060 to 1780 Mya, an alternative period based on stratigraphy rather than chronometry, named the <b>Columbian</b>, was suggested in the geological timescale review 2012 edited by Gradstein et al.,<sup id="cite_ref-Gradstein_et_al_2012_3-0" class="reference"><a href="#cite_note-Gradstein_et_al_2012-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> but as of February 2022<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orosirian&action=edit">[update]</a></sup>, this has not yet been officially adopted by the <a href="/wiki/IUGS" class="mw-redirect" title="IUGS">IUGS</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Paleogeography">Paleogeography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Orosirian&action=edit&section=1" title="Edit section: Paleogeography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Supercontinent" title="Supercontinent">supercontinent</a> <a href="/wiki/Columbia_(supercontinent)" title="Columbia (supercontinent)">Columbia</a> formed at the end of this period.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2024)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Orosirian&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.stratigraphy.org/bak/geowhen/stages/Orosirian.html">"Orosirian Period"</a>. <i>GeoWhen Database</i><span class="reference-accessdate">. Retrieved <span class="nowrap">July 8,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GeoWhen+Database&rft.atitle=Orosirian+Period&rft_id=http%3A%2F%2Fwww.stratigraphy.org%2Fbak%2Fgeowhen%2Fstages%2FOrosirian.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrosirian" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJames_G._Ogg2004" class="citation journal cs1">James G. Ogg (2004). "Status on Divisions of the International Geologic Time Scale". <i>Lethaia</i>. <b>37</b> (2): <span class="nowrap">183–</span>199. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F00241160410006492">10.1080/00241160410006492</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Lethaia&rft.atitle=Status+on+Divisions+of+the+International+Geologic+Time+Scale&rft.volume=37&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E183-%3C%2Fspan%3E199&rft.date=2004&rft_id=info%3Adoi%2F10.1080%2F00241160410006492&rft.au=James+G.+Ogg&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrosirian" class="Z3988"></span></li></ul> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Plumb1991-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Plumb1991_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Plumb1991_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPlumb1991" class="citation journal cs1">Plumb, K. A. (June 1, 1991). <a rel="nofollow" class="external text" href="https://doi.org/10.18814%2Fepiiugs%2F1991%2Fv14i2%2F005">"New Precambrian time scale"</a>. <i>Episodes</i>. <b>14</b> (2): <span class="nowrap">139–</span>140. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.18814%2Fepiiugs%2F1991%2Fv14i2%2F005">10.18814/epiiugs/1991/v14i2/005</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Episodes&rft.atitle=New+Precambrian+time+scale&rft.volume=14&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E139-%3C%2Fspan%3E140&rft.date=1991-06-01&rft_id=info%3Adoi%2F10.18814%2Fepiiugs%2F1991%2Fv14i2%2F005&rft.aulast=Plumb&rft.aufirst=K.+A.&rft_id=https%3A%2F%2Fdoi.org%2F10.18814%252Fepiiugs%252F1991%252Fv14i2%252F005&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrosirian" class="Z3988"></span></span> </li> <li id="cite_note-HuddartStott2013-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-HuddartStott2013_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDavid_HuddartTim_Stott2013" class="citation book cs1">David Huddart; Tim Stott (16 April 2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=_64G6cYuz3AC&pg=PT1599"><i>Earth Environments: Past, Present and Future</i></a>. John Wiley & Sons. pp. 1599–. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-118-68812-0" title="Special:BookSources/978-1-118-68812-0"><bdi>978-1-118-68812-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Earth+Environments%3A+Past%2C+Present+and+Future&rft.pages=1599-&rft.pub=John+Wiley+%26+Sons&rft.date=2013-04-16&rft.isbn=978-1-118-68812-0&rft.au=David+Huddart&rft.au=Tim+Stott&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D_64G6cYuz3AC%26pg%3DPT1599&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrosirian" class="Z3988"></span></span> </li> <li id="cite_note-Gradstein_et_al_2012-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-Gradstein_et_al_2012_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGradstein,_F.M.2012" class="citation book cs1">Gradstein, F.M.; et al., eds. (2012). <i>The Geologic Time Scale 2012</i>. Vol. 1. Elsevier. pp. <span class="nowrap">361–</span>365. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-44-459390-0" title="Special:BookSources/978-0-44-459390-0"><bdi>978-0-44-459390-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Geologic+Time+Scale+2012&rft.pages=%3Cspan+class%3D%22nowrap%22%3E361-%3C%2Fspan%3E365&rft.pub=Elsevier&rft.date=2012&rft.isbn=978-0-44-459390-0&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrosirian" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline 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