Early Pleistocene
Subdivisions of the Quaternary Period | ||||
---|---|---|---|---|
Period
|
Epoch
|
Age
|
Age | |
Quaternary | Holocene | Meghalayan | 0 | 4,200 |
Northgrippian | 4,200 | 8,200 | ||
Greenlandian | 8,200 | 11,700 | ||
Pleistocene | 'Upper' | 11,700 | 129 ka
| |
Chibanian | 129ka | 774ka | ||
Calabrian | 774ka | 1.80 Ma
| ||
Gelasian | 1.80Ma | 2.58Ma | ||
Neogene | Pliocene | Piacenzian | 2.58Ma | 3.60Ma |
Subdivision of the Quaternary Period according to the ICS, as of January 2020.[1]
For the Holocene, dates are relative to the year 2000 (e.g. Greenlandian began 11,700 years before 2000). For the beginning of the Northgrippian a date of 8,236 years before 2000 has been set.[2] The Meghalayan has been set to begin 4,250 years before 2000.[1] 'Tarantian' is an informal, unofficial name proposed for a stage/age to replace the equally informal, unofficial 'Upper Pleistocene' subseries/subepoch. In Europe and North America, the Holocene is subdivided into last glacial period ends with the cold Younger Dryas substage.
| ||||
The Early Pleistocene is an unofficial
Ma (million years ago) and 0.773 ± 0.005 Ma. The term Early Pleistocene applies to both the Gelasian Age and the Calabrian Age.[1]
While the Gelasian and the Calabrian have officially been defined by the
Middle Pleistocene and Late Pleistocene respectively. The Chibanian provisionally spans time from 773 ka to 126 ka, and the Tarantian from then until the definitive end of the whole Pleistocene, c. 9700 BC in the 10th millennium BC.[1]
Notes
- ^ a b c d e Cohen, K. M.; Finney, S. C.; Gibbard, P. L.; Fan, J.-X. (January 2020). "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. Retrieved 23 February 2020.
- ^ . Retrieved 11 November 2019. This proposal on behalf of the SQS has been approved by the International Commission on Stratigraphy (ICS) and formally ratified by the Executive Committee of the International Union of Geological Sciences (IUGS).
- . Retrieved 13 November 2019.