Abstract
Artiklen indeholder den af International Union of Geological Sciences ratificerede definition af starten af den nuværende mellemistid, Holocæn. Definitionen - et såkaldt Global Stratotype Section and Point (GSSP) - er baseret på analyse af data fra den grønlandske NGRIP-iskerne.
Udgivelsesdato: 17 January
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Journal of Quaternary Science |
| Vol/bind | 24 |
| Udgave nummer | 1 |
| Sider (fra-til) | 3-17 |
| Antal sider | 15 |
| ISSN | 0267-8179 |
| DOI | |
| Status | Udgivet - 2009 |
Bibliografisk note
Paper id:: 10.1002/jqs.1227Emneord
- Det Natur- og Biovidenskabelige Fakultet
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Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records. / Walker, Mike; Johnsen, Sigfus Johann; Rasmussen, Sune Olander; Popp, Trevor James; Steffensen, Jørgen Peder; Gibbard, Phil; Hoek, Wim; Lowe, John; Andrews, John; Björck, Svante; Cwynar, Les C.; Hughen, Konrad; Kershaw, Peter; Kromer, Bernd; Litt, Thomas; Lowe, David J.; Nakagawa, Takeshi; Newnham, Rewi; Schwander, Jakob.
I: Journal of Quaternary Science, Bind 24, Nr. 1, 2009, s. 3-17.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
}
TY - JOUR
T1 - Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records
AU - Walker, Mike
AU - Johnsen, Sigfus Johann
AU - Rasmussen, Sune Olander
AU - Popp, Trevor James
AU - Steffensen, Jørgen Peder
AU - Gibbard, Phil
AU - Hoek, Wim
AU - Lowe, John
AU - Andrews, John
AU - Björck, Svante
AU - Cwynar, Les C.
AU - Hughen, Konrad
AU - Kershaw, Peter
AU - Kromer, Bernd
AU - Litt, Thomas
AU - Lowe, David J.
AU - Nakagawa, Takeshi
AU - Newnham, Rewi
AU - Schwander, Jakob
N1 - Paper id:: 10.1002/jqs.1227
PY - 2009
Y1 - 2009
N2 - The Greenland ice core from NorthGRIP (NGRIP) contains a proxy climate record across the Pleistocene-Holocene boundary of unprecedented clarity and resolution. Analysis of an array of physical and chemical parameters within the ice enables the base of the Holocene, as reflected in the first signs of climatic warming at the end of the Younger Dryas/Greenland Stadial 1 cold phase, to be located with a high degree of precision. This climatic event is most clearly reflected in an abrupt shift in deuterium excess values, accompanied by more gradual changes in d18O, dust concentration, a range of chemical species, and annual layer thickness. A timescale based on multi-parameter annual layer counting provides an age of 11,700 calendar yr b2 k (before AD 2000) for the base of the Holocene, with a maximum counting error of 99 yr. A proposal that an archived core from this unique sequence should constitute the Global Stratotype Section and Point (GSSP) for the base of the Holocene Series/Epoch (Quaternary System/Period) has been ratified by the International Union of Geological Sciences. Five auxiliary stratotypes for the Pleistocene-Holocene boundary have also been recognised.
AB - The Greenland ice core from NorthGRIP (NGRIP) contains a proxy climate record across the Pleistocene-Holocene boundary of unprecedented clarity and resolution. Analysis of an array of physical and chemical parameters within the ice enables the base of the Holocene, as reflected in the first signs of climatic warming at the end of the Younger Dryas/Greenland Stadial 1 cold phase, to be located with a high degree of precision. This climatic event is most clearly reflected in an abrupt shift in deuterium excess values, accompanied by more gradual changes in d18O, dust concentration, a range of chemical species, and annual layer thickness. A timescale based on multi-parameter annual layer counting provides an age of 11,700 calendar yr b2 k (before AD 2000) for the base of the Holocene, with a maximum counting error of 99 yr. A proposal that an archived core from this unique sequence should constitute the Global Stratotype Section and Point (GSSP) for the base of the Holocene Series/Epoch (Quaternary System/Period) has been ratified by the International Union of Geological Sciences. Five auxiliary stratotypes for the Pleistocene-Holocene boundary have also been recognised.
KW - Faculty of Science
U2 - 10.1002/jqs.1227
DO - 10.1002/jqs.1227
M3 - Journal article
VL - 24
SP - 3
EP - 17
JO - Journal of Quaternary Science
JF - Journal of Quaternary Science
SN - 0267-8179
IS - 1
ER -