Difference between revisions of "Template:Geologic time scale"

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(The Cambrian is a period. The name is never used to refer to a supereon.)
imported>Necessary Evil
(Partial undid revision 445221977 by 84.198.56.170. Something went wrong at the table.)
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! Start, million years ago<ref name="uncertain-dates">Dates are slightly uncertain with differences of a few percent between various sources being common. This is largely due to uncertainties in [[radiometric dating]] and the problem that deposits suitable for radiometric dating seldom occur exactly at the places in the geologic column where they would be most useful. The dates and errors quoted above are according to the [[International Commission on Stratigraphy]] 2004 time scale. Dates labeled with a * indicate boundaries where a [[Global Boundary Stratotype Section and Point]] has been internationally agreed upon: see [[List of Global Boundary Stratotype Sections and Points]] for a complete list.</ref>
 
! Start, million years ago<ref name="uncertain-dates">Dates are slightly uncertain with differences of a few percent between various sources being common. This is largely due to uncertainties in [[radiometric dating]] and the problem that deposits suitable for radiometric dating seldom occur exactly at the places in the geologic column where they would be most useful. The dates and errors quoted above are according to the [[International Commission on Stratigraphy]] 2004 time scale. Dates labeled with a * indicate boundaries where a [[Global Boundary Stratotype Section and Point]] has been internationally agreed upon: see [[List of Global Boundary Stratotype Sections and Points]] for a complete list.</ref>
 
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|rowspan="94" colspan="2" style="background:#b3e2d1"| [[Phanerozoic]]
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|rowspan="94" style="background:#ffffff"| n/a
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|rowspan="94" style="background:#b3e2d1"| [[Phanerozoic]]
 
|rowspan="23" style="background:#ffff00"| [[Cenozoic]]<ref name="cenozoic-division">Historically, the [[Cenozoic]] has been divided up into the [[Quaternary]] and [[Tertiary]] sub-eras, as well as the [[Neogene]] and [[Paleogene]] periods. The [http://www.stratigraphy.org/upload/ISChart2009.pdf 2009 version of the ICS time chart] recognizes a slightly extended Quaternary as well as the Paleogene and a truncated Neogene, the Tertiary having been demoted to informal status.</ref>
 
|rowspan="23" style="background:#ffff00"| [[Cenozoic]]<ref name="cenozoic-division">Historically, the [[Cenozoic]] has been divided up into the [[Quaternary]] and [[Tertiary]] sub-eras, as well as the [[Neogene]] and [[Paleogene]] periods. The [http://www.stratigraphy.org/upload/ISChart2009.pdf 2009 version of the ICS time chart] recognizes a slightly extended Quaternary as well as the Paleogene and a truncated Neogene, the Tertiary having been demoted to informal status.</ref>
 
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Revision as of 23:52, 1 January 2012

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