Metadata
Author: langbot
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English[en]
The geologic time scale (GTS) is a system of chronological dating that classifies geological strata (stratigraphy) in time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in geologic history. The time scale was developed through the study and observation of layers of rock and relationships as well as the times when different organisms appeared, evolved and became extinct through the study of fossilized remains and imprints. The table of geologic time spans, presented here, agrees with the nomenclature, dates and standard color codes set forth by the International Commission on Stratigraphy (ICS).
Cornish[kw]
An Goloven Dhororiethel yw an kevreyth a glassa karrygi hag istori an Nor yn osow hag amseryow dyffrans. Displegys veu an kevreyth a'n 19ves kansvledhen, dre vras gans dororydhyon Breten Veur, kepar ha Roderick Murchison, Adam Sedgwick ha Charles Lyell, kynth o erel dhyworth Europa, kepar ha Friedrich Von Alberti ha Alexandre Brongniart. Chanjys dhe'n kevreyth yw rewlys gans Desedhek Kesgwlasek Nivelonieth (International Commission on Stratigraphy).