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Northgrippian

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(Redirected fromMiddle Holocene)

Second stage of the Holocene epoch

Northgrippian

0.0082 – 0.0042Ma

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Chronology

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Cenozoic

Quaternary

Holocene

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Ages of the Holocene Epoch.
Axis scale: AD year.

Etymology

Name formality

Formal

Name ratified

14 June 2018^[1]^[2]

Usage information

Celestial body

Earth

Regional usage

Global (ICS)

Time scale(s) used

ICS Time Scale

Definition

Chronological unit

Age

Stratigraphic unit

Stage

Time span formality

Formal

Lower boundary definition

8.2 kiloyear event

Lower boundary GSSP

NGRIP1 ice core,Greenland
75°06′00″N42°19′12″W / 75.1000°N 42.3200°W /75.1000; -42.3200

Lower GSSP ratified

14 June 2018^[1]

Upper boundary definition

4.2 kiloyear event

Upper boundary GSSP

Mawmluh Cave,Meghalaya,India
25°15′44″N91°42′54″E / 25.2622°N 91.7150°E /25.2622; 91.7150

Upper GSSP ratified

14 June 2018^[1]

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Part ofa series on

Human history

↑Prehistory (Stone Age) (Pleistocene epoch)

Holocene

Timelines
Neolithic –Contemporary
(10,000 BCE –present)

Ancient

Europe

Postclassical

Timeline

South Asia

Europe
- Renaissance

Modern

See also
Early modern Late modern Contemporary Africa North America South America Oceania East Asia South Asia Southeast Asia West Asia Europe
Age of Discovery Modernity Postmodernity Futurology Political history

↓Future

In thegeologic time scale, theNorthgrippian is the middle one of threeages orstages of theHolocene Epoch orSeries.^[3]^[4]^[5]^[6] It was officially ratified by theInternational Commission on Stratigraphy in June 2018 along with the earlierGreenlandian and laterMeghalayan ages/stages. The age takes its name from theNorth Greenland Ice Core Project (NorthGRIP).^[4] The age began 8,276BP (6326 BCE or 3854HE), near the8.2-kiloyear event, and goes up to the start of theMeghalayan, which began 4,200 BP (2250 BCE or 7750 HE), near the4.2-kiloyear event.^[7]

References

[edit]

^^a ^b ^cWalker, 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 (1 December 2018)."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"(PDF).Episodes.41 (4). Subcommission on Quaternary Stratigraphy (SQS):213–223.doi:10.18814/epiiugs/2018/018016. Retrieved28 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).
^Head, Martin J. (17 May 2019). "Formal subdivision of the Quaternary System/Period: Present status and future directions".Quaternary International.500:32–51.Bibcode:2019QuInt.500...32H.doi:10.1016/j.quaint.2019.05.018.S2CID 182783922.
^Cohen, K. M.; Finney, S. C.; Gibbard, P. L.; Fan, J-X. (January 2020)."International Chronostratigraphic Chart"(PDF). International Commission on Stratigraphy. Retrieved8 January 2021.
^^a ^bInternational Commission on Stratigraphy."ICS chart containing the Quaternary and Cambrian GSSPs and new stages (v 2018/07) is now released!". Retrieved19 July 2018.
^Radha-Udayakumar, Ganesh (19 July 2018)."Scientists call our era the Meghalayan Age. Here's what the world was like when it began".India Today. New Delhi: Living Media India Limited. Retrieved3 January 2021.
^"'Meghalayan Age': Latest phase in Earth's history named after Indian state, began 4,200 years ago".Scroll.in. 19 July 2018.
^Amos, Jonathan (18 July 2018)."Welcome to the Meghalayan Age – a new phase in history".BBC News. Retrieved19 July 2018.

v t e Holocene
ICS stages/ages (official)	Preceded by thePleistocene Greenlandian (11.7* –8.236*ka) Northgrippian (8.236 –4.2† ka) Meghalayan (4.2 ka – present)
Blytt–Sernander stages/ages	Pleistocene Preboreal (10.3† ka – 9† ka) Boreal (9 ka – 7.5† ka) Atlantic (7.5 ka –5† ka) Subboreal (5 ka –2.5† ka) Subatlantic (2.5ka – present)
*Relative to year 2000 (b2k). †Relative to year 1950 (BP/Before "Present").

Geological history of Earth

Cenozoic Era
(present–66.0 Ma)

Quaternary(present–2.58 Ma)	Holocene (present–11.7 ka) Pleistocene (11.7 ka–2.58 Ma)
Neogene(2.58–23.0 Ma)	Pliocene (2.59–5.33 Ma) Miocene (5.33–23.0 Ma)
Paleogene(23.0–66.0 Ma)	Oligocene (23.0–33.9 Ma) Eocene (33.9–56.0 Ma) Paleocene (56.0–66.0 Ma)

Mesozoic Era
(66.0–252 Ma)

Cretaceous(66.0–145 Ma)	Late (66.0–100 Ma) Early (100–145 Ma)
Jurassic(145–201 Ma)	Late (145–164 Ma) Middle (164–174 Ma) Early (174–201 Ma)
Triassic(201–252 Ma)	Late (201–237 Ma) Middle (237–247 Ma) Early (247–252 Ma)

Paleozoic Era
(252–539 Ma)

Permian(252–299 Ma)	Lopingian (252–260 Ma) Guadalupian (260–272 Ma) Cisuralian (272–299 Ma)
Carboniferous(299–359 Ma)	Pennsylvanian (299–323 Ma) Mississippian (323–359 Ma)
Devonian(359–419 Ma)	Late (359–383 Ma) Middle (383–393 Ma) Early (393–419 Ma)
Silurian(419–444 Ma)	Pridoli (419–423 Ma) Ludlow (423–427 Ma) Wenlock (427–433 Ma) Llandovery (433–444 Ma)
Ordovician(444–485 Ma)	Late (444–458 Ma) Middle (458–470 Ma) Early (470–485 Ma)
Cambrian(485–539 Ma)	Furongian (485–497 Ma) Miaolingian (497–509 Ma) Series 2 (509–521 Ma) Terreneuvian (521–539 Ma)

Proterozoic Eon
(539 Ma–2.5 Ga)

Neoproterozoic(539 Ma–1 Ga)	Ediacaran (539–635 Ma) Cryogenian (635–720 Ma) Tonian (720 Ma–1 Ga)
Mesoproterozoic(1–1.6 Ga)	Stenian (1–1.2 Ga) Ectasian (1.2–1.4 Ga) Calymmian (1.4–1.6 Ga)
Paleoproterozoic(1.6–2.5 Ga)	Statherian (1.6–1.8 Ga) Orosirian (1.8–2.05 Ga) Rhyacian (2.05–2.3 Ga) Siderian (2.3–2.5 Ga)