This site provides information about the International Commission on Stratigraphy, a collection of downloadable stratigraphic charts and columns, an abridged version of the International Stratigraphic Guide, links to industry journals and publications, and links to a collection of other stratigraphy-related websites. It also features a detailed chart of global boundary stratotype sections and points, as well as the Time Scale Creator, software that lets users create customized downloadable charts of any portion of the geologic time scale and correlated earth history events. The site also links to the GeoWhen Database, a collection of detailed time-scale representations and classifications.