- In stratigraphy, paleontology, geology, and geobiology, an
erathem is the
total stratigraphic unit
deposited during a
certain corresponding span of time...
-
specific interval of
geologic time, and only this time span. Eonothem,
erathem, system, series, subseries, stage, and
substage are the
hierarchical chronostratigraphic...
- Series, of the
Paleogene Period or System, and of the
Cenozoic Era or
Erathem. The
beginning of the
Danian (and the end of the
preceding Maastrichtian)...
-
Stratigraphy (ICS) once
proposed that the
Quaternary be
considered a sub-era (sub-
erathem) of the Neogene, with a
beginning date of 2.58 Ma,
namely the
start of...
-
Cretaceous Series, the
Cretaceous Period or System, and of the
Mesozoic Era or
Erathem. It
spanned the
interval from 72.1 to 66
million years ago. The Maastrichtian...
- used ICS Time
Scale Definition Chronological unit Era
Stratigraphic unit
Erathem Time span
formality Formal Lower boundary definition Iridium enriched layer...
- used ICS Time
Scale Definition Chronological unit Era
Stratigraphic unit
Erathem Time span
formality Formal Lower boundary definition First appearance of...
-
within the
timelines within the rock column.
Eonothems are
subdivided into
erathems and
their smaller subdivisions within geology and
paleobiology and their...
- used ICS Time
Scale Definition Chronological unit Era
Stratigraphic unit
Erathem Lower boundary definition Appearance of the
Ichnofossil Treptichnus pedum...
-
subdivides rock
layers on
their lithology.
Systems are
subdivisions of
erathems and are
themselves divided into
series and stages. The
systems of the Phanerozoic...
