Quaternary

:This article is about the geologic period. For base-4 in mathematics, see quaternary numeral system. For the EP by Motley Crue see Quaternary (EP). For structural biology see Quaternary structure.

Related Topics:
Quaternary numeral system - EP - Motley Crue - Quaternary (EP) - Quaternary structure

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

The Quaternary Period is the geologic time period from the end of the Pliocene Epoch roughly 1.8-1.6 million years ago to the present. The Quaternary includes 2 geologic subdivisions -- the Pleistocene and the Holocene Epochs.

Related Topics:
Geologic time - Pliocene - Epoch - Pleistocene - Holocene

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

In a recent revision of the international classification of geological time periods, the Quaternary was subsumed into the Neogene. The move has met with some resistance from geologists.

Related Topics:
Neogene - Geologist

~ ~ ~ ~ ~ ~ ~ ~ ~ ~