Stage (geology)

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This editable Main Article is under development and subject to a disclaimer.

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The stage is the fundamental chronostratigraphic unit.

Being chronostratigraphic units, stages represent the body of rocks formed during a given interval of geologic time. The corresponding geochronologic units are called ages.

Stages/ages are formally defined following the indications of the ICS (International Commission on Stratigraphy). More specifically, stages/ages are defined by the GSSP of their base, their top being defined by the GSSP of the overlying stage/age.

A list of stages/ages may be found here.

## Interdisciplinary Links in Citizendium[edit]

* Earth science
* Age (geology)
* Geologic time scale
* Geologic ages of earth history
* Chronostratigraphy
* Geochronology
* Geochronometry
* Hydrology
* Biostratigraphy
* Palynology