Age (geology): Difference between revisions
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The '''age''' is the fundamental [[chronostratigraphy|chronostratigraphic | The '''age''' is the fundamental [[chronostratigraphy|chronostratigraphic]] unit. | ||
Being [[geochronology|geochronologic | Being [[geochronology|geochronologic]] units, ages represent a interval of geologic time. The corresponding [[chronostratigraphy|chronostratigraphic]] units represent the body of rocks formed during the age, and are called [[Stage (geology)|stages]] | ||
Ages/Stages are formally defined following the indications of the [http://www.stratigraphy.org/ ICS] (International Commission on Stratigraphy). More specifically, ages/stages are defined by the [[GSSP]] of their base, their top being defined by the GSSP of the overlying age/stage. | Ages/Stages are formally defined following the indications of the [http://www.stratigraphy.org/ ICS] (International Commission on Stratigraphy). More specifically, ages/stages are defined by the [[GSSP]] of their base, their top being defined by the GSSP of the overlying age/stage. | ||
A list of ages/stages may be found [[List of Global Boundary Stratotype Sections and Points | A list of ages/stages may be found [[List of Global Boundary Stratotype Sections and Points|here]]. | ||
|here]]. | |||
== See also == | == See also == | ||
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* [http://www.stratigraphy.org/ International Commission on Stratigraphy] | * [http://www.stratigraphy.org/ International Commission on Stratigraphy] | ||
[[Category:CZ Live]] | [[Category:CZ Live]] | ||
[[Category:Earth Sciences Workgroup]] | [[Category:Earth Sciences Workgroup]] | ||
Revision as of 17:04, 1 April 2007
The age is the fundamental chronostratigraphic unit.
Being geochronologic units, ages represent a interval of geologic time. The corresponding chronostratigraphic units represent the body of rocks formed during the age, and are called stages
Ages/Stages are formally defined following the indications of the ICS (International Commission on Stratigraphy). More specifically, ages/stages are defined by the GSSP of their base, their top being defined by the GSSP of the overlying age/stage.
A list of ages/stages may be found here.