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About: Early Cambrian geochemical fluctuations     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Substance100019613, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: yago:Abstraction100002137yago:Atom114619225yago:Isotope114619658yago:Matter100020827yago:Part113809207yago:PhysicalEntity100001930yago:Relation100031921yago:WikicatIsotopesyago:Substance100019613 New Facet based on Instances of this Class

The start of the Cambrian period is marked by 'fluctuations' in a number of geochemical records, including Strontium, Sulfur and Carbon isotopic excursions. While these anomalies are difficult to interpret, a number of possibilities have been put forward. They probably represent changes on a global scale, and as such may help to constrain possible causes of the Cambrian explosion. The chemical signature may be related to continental break-up, the end of a "global glaciation", or a catastrophic drop in productivity caused by a mass extinction just before the beginning of the Cambrian.