Greenlandian: Difference between revisions
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In the [[geologic time scale]], the '''Greenlandian''' is the earliest [[age (geology)|age]] or lowest [[stage (stratigraphy)|stage]] of the [[Holocene]] [[Epoch (geology)|epoch]] or [[series (stratigraphy)|series]], part of the [[Quaternary]].<ref name="chart" /><ref name="ICCtimescale" /> Beginning in 9700 BCE and ending 6236 BCE,<ref name="BBCNews" /> it is the earliest of three sub-divisions of the Holocene, and was officially ratified by the [[International Commission on Stratigraphy]] in June 2018 with the later [[ |
In the [[geologic time scale]], the '''Greenlandian''' is the earliest [[age (geology)|age]] or lowest [[stage (stratigraphy)|stage]] of the [[Holocene]] [[Epoch (geology)|epoch]] or [[series (stratigraphy)|series]], part of the [[Quaternary]].<ref name="chart" /><ref name="ICCtimescale" /> Beginning in 9700 BCE and ending 6236 BCE,<ref name="BBCNews" /> it is the earliest of three sub-divisions of the Holocene, and was officially ratified by the [[International Commission on Stratigraphy]] in June 2018 with the later [[Northgrippian]] and [[Meghalayan]] ages/stages.<ref name="chart" /> The lower boundary of the Greenlandian Age is the [[Global_Boundary_Stratotype_Section_and_Point|GSSP]] sample from the [[North Greenland Ice Core Project]] in central Greenland (75.1000°N 42.3200°W).<ref name="GSSP-Table" /> The Greenlandian GSSP has been correlated with the end of [[Younger Dryas]] (from near-glacial to interglacial) and a "shift in deuterium excess values".<ref name="GSSP-Table" /> |
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==References== |
==References== |
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Revision as of 16:03, 3 January 2021
| Greenlandian | |||||||||||||||
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| Chronology | |||||||||||||||
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| 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 | End of the Younger Dryas stadial | ||||||||||||||
| Lower boundary GSSP | NGRIP2 ice core, Greenland 75°06′00″N 42°19′12″W / 75.1000°N 42.3200°W | ||||||||||||||
| Lower GSSP ratified | 14 June 2018 (as base of Greenlandian)[1] | ||||||||||||||
| Upper boundary definition | 8.2 kiloyear event | ||||||||||||||
| Upper boundary GSSP | NGRIP1 ice core, Greenland 75°06′00″N 42°19′12″W / 75.1000°N 42.3200°W | ||||||||||||||
| Upper GSSP ratified | 14 June 2018[1] | ||||||||||||||
| Part of a series on |
| Human history |
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| ↑ Prehistory (Stone Age) (Pleistocene epoch) |
| ↓ Future |
In the geologic time scale, the Greenlandian is the earliest age or lowest stage of the Holocene epoch or series, part of the Quaternary.[3][4] Beginning in 9700 BCE and ending 6236 BCE,[5] it is the earliest of three sub-divisions of the Holocene, and was officially ratified by the International Commission on Stratigraphy in June 2018 with the later Northgrippian and Meghalayan ages/stages.[3] The lower boundary of the Greenlandian Age is the GSSP sample from the North Greenland Ice Core Project in central Greenland (75.1000°N 42.3200°W).[6] The Greenlandian GSSP has been correlated with the end of Younger Dryas (from near-glacial to interglacial) and a "shift in deuterium excess values".[6]
References
- ^ a b c 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 (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): 213–223. doi:10.18814/epiiugs/2018/018016. Retrieved 28 August 2020.
- ^ Head, Martin J. (17 May 2019). "Formal subdivision of the Quaternary System/Period: Present status and future directions". Quaternary International. 500: 32–51. doi:10.1016/j.quaint.2019.05.018. Retrieved 26 December 2020.
- ^ a b International Commission on Stratigraphy. "ICS chart containing the Quaternary and Cambrian GSSPs and new stages (v 2018/07) is now released!". Retrieved 15 July 2018.
- ^ Cohen, Kim Mikkel, David A. T. Harper, Philip Leonard Gibbard, and Junxuan Fan. "The ICS International Chronostratigraphic Chart". International Commission on Stratigraphy. Retrieved 15 July 2018.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ Amos, Jonathan (18 July 2018). "Welcome to the Meghalayan Age - a new phase in history". BBC News. Retrieved 19 July 2018.
- ^ a b International Commission on Stratigraphy. "GSSP Table - All Periods". GSSPs. Retrieved 15 July 2018.
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