A stage or age in geology is a period of time measured in millions of years. It is less than an epoch, and more than a chron or chronozone.

Technically, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of sedimentation or deposition. An example of a stage in the Geologic time scale is the Kimmeridgian.


Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.