Northgrippian

In the geologic time scale, the Northgrippian is the middle 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]

Northgrippian
0.0082 – 0.0042 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Chronology
−11000 — – — – −10000 — – — – −9000 — – — – −8000 — – — – −7000 — – — – −6000 — – — – −5000 — – — – −4000 — – — – −3000 — – — – −2000 — – — – −1000 — – — – 0 — – — – 1000 — – — – 2000 — Cenozoic Quaternary Late Pleistocene Holocene Greenlandian Northgrippian Meghalayan ← Year 0 ← 8.2 kiloyear event ← 4.2 kiloyear event ← Y2K 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 75.1000°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 25.2622°N 91.7150°E / 25.2622; 91.7150
Upper GSSP ratified	14 June 2018[1]

See also

• Geologic time scale
• North Greenland Ice Core Project
• 5th millennium BC