epoch

epoch, unit of geologic time that is a subdivision of a period. The Pleistocene and Holocene epochs, for example, are divisions of the Quaternary period. Epoch is also used to describe a short length of geologic time during a special occurrence, such as the glacial epoch. See geology; Geologic Timescale (table).

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More on epoch from Fact Monster:

  • Holocene epoch - Holocene epoch Holocene epoch or Recent epoch,most recent of all subdivisions of geologic time, ...
  • Pleistocene epoch - Pleistocene epoch Pleistocene epoch , 6th epoch of the Cenozoic era of geologic time (see Geologic ...
  • Miocene epoch - Miocene epoch Miocene epoch , fourth epoch of the Tertiary period in the Cenozoic era of geologic ...
  • Pliocene epoch - Pliocene epoch Pliocene epoch , fifth epoch of the Cenozoic era of geologic time (see Geologic ...
  • Paleocene epoch - Paleocene epoch Paleocene epoch , first epoch of the Tertiary period in the Cenozoic era of ...

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