Erathem (Geology terminology ⛰️)

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 ...

https://en.wikipedia.org/wiki/Erathem

#Erathem #Erathems #Stratigraphy #Geochronology #GeologicalEras #Paleogeography

System (stratigraphy) (Geological periods 🌍)

A system in stratigraphy is a sequence of strata that were laid down together within the same corresponding geological period. The associated period is a chronological time unit, a part of the geological time scale, while the system is a unit of chronostratigraphy. Systems are unrelated to lithostratigraphy, whic...

https://en.wikipedia.org/wiki/System_(stratigraphy)

#System #Erathems #Stratigraphy #Geochronology #GeologicalUnits #GeologicalPeriods

System (stratigraphy) (Geological periods 🌍)

A system in stratigraphy is a sequence of strata that were laid down together within the same corresponding geological period. The associated period is a chronological time unit, a part of the geological time scale, while the system is a unit of chronostratigraphy. Systems are unrelated to lithostratigraphy, whic...

https://en.wikipedia.org/wiki/System_(stratigraphy)

#System #Erathems #Stratigraphy #Geochronology #GeologicalUnits #GeologicalPeriods