erathem -> αιωνοδιάπλαση

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erathem -> αιωνοδιάπλαση

Πηγή: http://www.eleto.gr/download/Bodies/Geoterms_Glossary.pdf

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).
https://en.wikipedia.org/wiki/Erathem
« Last Edit: 24 Feb, 2018, 15:38:31 by spiros »


 

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