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- Iridium_anomaly abstract "The term iridium anomaly commonly refers to an unusual abundance of the chemical element iridium in a layer of rock strata, often taken as evidence of an extraterrestrial impact event because of the case of such an anomaly at the Cretaceous–Paleogene boundary (often abbreviated to K-Pg boundary).Iridium is a very rare element in the Earth's crust, but is found in anomalously high concentrations (around 100 times greater than normal) in a thin worldwide layer of clay marking the boundary between the Cretaceous and Paleogene periods, 66 million years ago. This boundary is marked by a major extinction event, including that of the dinosaurs along with about 70% of all other species. The physicist Luis Alvarez and his coworkers were the first to link the extinction to an impact event based on the observation that iridium is much more abundant in meteorites than it is on Earth. This theory was later substantiated by other evidence, including the eventual discovery of the impact crater, known as Chicxulub, on the Yucatan Peninsula in Mexico.The type locality of this iridium anomaly is near Raton, New Mexico.".
- Iridium_anomaly wikiPageExternalLink 13_Alverez.pdf.
- Iridium_anomaly wikiPageExternalLink impacts.html.
- Iridium_anomaly wikiPageExternalLink science?_ob=ArticleURL&_udi=B6V61-473F25T-59&_user=10&_coverDate=11%2F30%2F1989&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=f23d86dff636c7c586b1b7daadfd62d0.
- Iridium_anomaly wikiPageID "8010045".
- Iridium_anomaly wikiPageLength "2553".
- Iridium_anomaly wikiPageOutDegree "21".
- Iridium_anomaly wikiPageRevisionID "618231696".
- Iridium_anomaly wikiPageWikiLink Category:Iridium.
- Iridium_anomaly wikiPageWikiLink Chemical_element.
- Iridium_anomaly wikiPageWikiLink Chicxulub_crater.
- Iridium_anomaly wikiPageWikiLink Clay.
- Iridium_anomaly wikiPageWikiLink Cretaceous.
- Iridium_anomaly wikiPageWikiLink Cretaceous–Paleogene_boundary.
- Iridium_anomaly wikiPageWikiLink Crust_(geology).
- Iridium_anomaly wikiPageWikiLink Dinosaur.
- Iridium_anomaly wikiPageWikiLink Earths_crust.
- Iridium_anomaly wikiPageWikiLink Extinction_event.
- Iridium_anomaly wikiPageWikiLink Impact_crater.
- Iridium_anomaly wikiPageWikiLink Impact_event.
- Iridium_anomaly wikiPageWikiLink Iridium.
- Iridium_anomaly wikiPageWikiLink Luis_Walter_Alvarez.
- Iridium_anomaly wikiPageWikiLink Meteorite.
- Iridium_anomaly wikiPageWikiLink Meteorites.
- Iridium_anomaly wikiPageWikiLink Mexico.
- Iridium_anomaly wikiPageWikiLink Paleogene.
- Iridium_anomaly wikiPageWikiLink Physicist.
- Iridium_anomaly wikiPageWikiLink Raton,_New_Mexico.
- Iridium_anomaly wikiPageWikiLink Stratum.
- Iridium_anomaly wikiPageWikiLink Type_locality_(geology).
- Iridium_anomaly wikiPageWikiLink Yucatan_Peninsula.
- Iridium_anomaly wikiPageWikiLink Yucatán_Peninsula.
- Iridium_anomaly wikiPageWikiLinkText "Iridium anomaly".
- Iridium_anomaly wikiPageWikiLinkText "iridium anomalies".
- Iridium_anomaly wikiPageWikiLinkText "iridium anomaly".
- Iridium_anomaly wikiPageWikiLinkText "iridium".
- Iridium_anomaly wikiPageWikiLinkText "iridium-rich clay".
- Iridium_anomaly hasPhotoCollection Iridium_anomaly.
- Iridium_anomaly wikiPageUsesTemplate Template:Geology-stub.
- Iridium_anomaly subject Category:Iridium.
- Iridium_anomaly type Article.
- Iridium_anomaly type Article.
- Iridium_anomaly type Element.
- Iridium_anomaly comment "The term iridium anomaly commonly refers to an unusual abundance of the chemical element iridium in a layer of rock strata, often taken as evidence of an extraterrestrial impact event because of the case of such an anomaly at the Cretaceous–Paleogene boundary (often abbreviated to K-Pg boundary).Iridium is a very rare element in the Earth's crust, but is found in anomalously high concentrations (around 100 times greater than normal) in a thin worldwide layer of clay marking the boundary between the Cretaceous and Paleogene periods, 66 million years ago. ".
- Iridium_anomaly label "Iridium anomaly".
- Iridium_anomaly sameAs Iridiová_anomálie.
- Iridium_anomaly sameAs Iridium-Anomalie.
- Iridium_anomaly sameAs Anomalia_irydowa.
- Iridium_anomaly sameAs m.026nfg1.
- Iridium_anomaly sameAs Q1276327.
- Iridium_anomaly sameAs Q1276327.
- Iridium_anomaly sameAs 銥異常.
- Iridium_anomaly wasDerivedFrom Iridium_anomaly?oldid=618231696.
- Iridium_anomaly isPrimaryTopicOf Iridium_anomaly.