Northgrippian
Northgrippian | ||||||
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Chronology | ||||||
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Etymology | ||||||
Name formality | Formal | |||||
Name ratified | 14 June 2018 | |||||
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″N 42°19′12″W / 75.1000°N 42.3200°W | |||||
Lower GSSP ratified | 14 June 2018 | |||||
Upper boundary definition | 4.2 kiloyear event | |||||
Upper boundary GSSP | Mawmluh Cave, Meghalaya, India 25°15′44″N 91°42′54″E / 25.2622°N 91.7150°E | |||||
Upper GSSP ratified | 14 June 2018 |
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In the geologic time scale, the Northgrippian is the middle one of three ages or stages of the Holocene Epoch or Series. 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). 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.
See also