Northgrippian Explained

Northgrippian
Color:Northgrippian
Time Start:0.0082
Time End:0.0042
Timeline:Holocene
Name Formality:Formal
Name Accept Date:14 June 2018[1] [2]
Celestial Body:earth
Usage:Global (ICS)
Timescales Used:ICS Time Scale
Chrono Unit:Age
Strat Unit:Stage
Timespan Formality:Formal
Lower Boundary Def:8.2 kiloyear event
Lower Gssp Location:NGRIP1 ice core, Greenland
Lower Gssp Accept Date:14 June 2018
Upper Boundary Def:4.2 kiloyear event
Upper Gssp Location:Mawmluh Cave, Meghalaya, India
Upper Gssp Accept Date:14 June 2018

In the geologic time scale, the Northgrippian is the middle one of three ages or stages of the Holocene Epoch or Series.[3] [4] [5] [6] It was officially ratified by the International Commission on Stratigraphy in June 2018 along with the earlier Greenlandian and later Meghalayan ages/stages. The age takes its name from the North Greenland Ice Core Project (NorthGRIP).[4] The age began 8,276 BP (6326 BCE or 3854 HE), near the 8.2-kiloyear event, and goes up to the start of the Meghalayan, which began 4,200 BP (2250 BCE or 7750 HE), near the 4.2-kiloyear event.[7]

See also

Notes and References

  1. Walker . Mike . Head . Martin J. . Berkelhammer . Max . Björck . Svante . Cheng . Hai . Cwynar . Les . Fisher . David . Gkinis . Vasilios . Long . Anthony . Lowe . John . Newnham . Rewi . Rasmussen . Sune Olander . Weiss . Harvey . Formal ratification of the subdivision of the Holocene Series/ Epoch (Quaternary System/Period): two new Global Boundary Stratotype Sections and Points (GSSPs) and three new stages/subseries . Episodes . Subcommission on Quaternary Stratigraphy (SQS) . 1 December 2018 . 41 . 4 . 213–223 . 10.18814/epiiugs/2018/018016 . free . 28 August 2020. 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).
  2. Head . Martin J. . Formal subdivision of the Quaternary System/Period: Present status and future directions . Quaternary International . 17 May 2019 . 500 . 32–51 . 10.1016/j.quaint.2019.05.018 . 2019QuInt.500...32H . 182783922 .
  3. Web site: International Chronostratigraphic Chart . Cohen . K. M. . Finney . S. C. . Gibbard . P. L. . Fan . J-X. . International Commission on Stratigraphy . January 2020 . 8 January 2021.
  4. Web site: International Commission on Stratigraphy . ICS chart containing the Quaternary and Cambrian GSSPs and new stages (v 2018/07) is now released! . 19 July 2018.
  5. Web site: Scientists call our era the Meghalayan Age. Here's what the world was like when it began . Radha-Udayakumar . Ganesh . India Today . Living Media India Limited . New Delhi . 19 July 2018 . 3 January 2021.
  6. Web site: 'Meghalayan Age': Latest phase in Earth's history named after Indian state, began 4,200 years ago . Scroll.in. 19 July 2018 .
  7. News: Welcome to the Meghalayan Age – a new phase in history . Amos . Jonathan . 18 July 2018 . BBC News . 19 July 2018.

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