erathem -> αιωνοδιάπλαση


  • Global Moderator
  • Hero Member
  • *****
    • Posts: 70714
    • Gender:Female
  • Vicky Papaprodromou
erathem -> αιωνοδιάπλαση


In stratigraphy, paleontology, geology, and geobiology an erathem is the total stratigraphic unit deposited during a certain corresponding span of time during an era in the geologic timescale.

It can therefore be used as a chronostratigraphic unit of time which delineates a large span of years — less than a geological eon, but greater than its successively smaller and more refined subdivisions (geologic periods, epochs, and geologic ages).
« Last Edit: 24 Feb, 2018, 15:38:31 by spiros »


Search Tools