Age (geology): Difference between revisions
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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 [ | A list of ages/stages may be found at the International Commission on Stratigraphy.<ref>[http://www.stratigraphy.org/ Overview of Global Boundary Stratotype Sections and Points (GSSP's)Status on June 2004], compiled by Jim Ogg (ICS Executive Secretary) (2004)</ref><ref>[http://www.stratigraphy.org/cheu.pdf International Stratigraphic Chart]</ref> | ||
==Interdisciplinary Links in Citizendium== | ==Interdisciplinary Links in Citizendium== | ||
Revision as of 00:01, 4 June 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 at the International Commission on Stratigraphy.[1][2]
Interdisciplinary Links in Citizendium
- Earth science
- Stage (geology)
- Geologic time scale
- Geologic ages of earth history
- Chronostratigraphy
- Geochronology
- Geochronometry
- Hydrology
- Biostratigraphy
- Palynology
External links
- ↑ Overview of Global Boundary Stratotype Sections and Points (GSSP's)Status on June 2004, compiled by Jim Ogg (ICS Executive Secretary) (2004)
- ↑ International Stratigraphic Chart