-
chronology and
periodization, an
epoch or reference epoch is an
instant in time
chosen as the
origin of a
particular calendar era. The "
epoch"
serves as a...
- Ice Age) is the
geological epoch that
lasted from c. 2.58 million to 11,700
years ago,
spanning the Earth's most
recent period of
repeated glaciations....
-
geological eras
defined for the
history of Earth.
Comparable terms are
epoch, age,
period, saeculum, aeon (Gr**** aion) and
Sanskrit yuga. The word has been...
- -loʊ-/) is the
current geological epoch,
beginning approximately 11,700
years ago. It
follows the Last
Glacial Period,
which concluded with the Holocene...
- is the
younger of two
epochs into
which the
Cretaceous Period is
divided in the
geologic time scale. Rock
strata from this
epoch form the
Upper Cretaceous...
- In astronomy, an
epoch or reference epoch is a
moment in time used as a
reference point for some time-varying
astronomical quantity. It is
useful for the...
- stratigraphies, localities, tectonics, and life. The
Pennsylvanian Epoch of the
Carboniferous Period: 318 to 299 Mya, Paleos.com US
Geological Survey comparison...
-
Early Cretaceous (geochronological name)
or the
Lower Cretaceous (chronostratigraphic name) is the
earlier or lower of the two
major divisions of the Cretaceous...
-
geologic record. It is the
earlier of two
subperiods of the
Carboniferous period lasting from
roughly 358.9 to 323.2
million years ago. As with most other...
-
Early Jur****ic
Epoch (in
chronostratigraphy corresponding to the
Lower Jur****ic Series) is the
earliest of
three epochs of the Jur****ic
Period. The Early...
