Age (geology)

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

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This article is about Age (geology). For other uses of the term  Age , please see Age (disambiguation).

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 at the International Commission on Stratigraphy.[1][2]

## Interdisciplinary Links in Citizendium[edit]

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

## Notes[edit]

1. ↑ Overview of Global Boundary Stratotype Sections and Points (GSSP's)Status on June 2004, compiled by Jim Ogg (ICS Executive Secretary) (2004)
2. ↑ International Stratigraphic Chart