Search results
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).
ICS is a scientific body that defines global units of the International Chronostratigraphic Chart and the International Geologic Time Scale. The web page provides links to the chart, the GSSP, the correlation table, and the regional charts for the Ordovician and Permian systems.
2 dni temu · The geologic time scale is the “calendar” for events in Earth history. It subdivides all time into named units of abstract time called—in descending order of duration— eons , eras , periods , epochs , and ages.
Explore the International Chronostratigraphic Chart, a visual representation of the geological time scale based on the Semantic Web. Zoom in and out, change the time scaling, and see the names and ages of the eons, eras, periods, and stages.
17 gru 2022 · Global chronostratigraphical correlation table for the last 2.7 million years. Click here to download the pdf file and here to see the explanation of the correlation table. Ordovician Chronostratigraphic Chart.
21 mar 2024 · The ICS defines global units of the International Chronostratigraphic Chart and the International Geological Time Scale. Learn about the subcommissions, the executive, the publications, the prizes and the news of the ICS.
Explore the geological timescale and geochronological terms used by BGS, from the Precambrian to the Cenozoic era. Browse the timechart by era or download the pdf, and learn about the fossils, rocks and environments of each period.
