Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782
Samples of dust from the Greenland Ice Sheet Project 2 (GISP2) ice core, Summit, Greenland, dated within marine isotope stage 2 (between 23,340 and 26,180 calendar years B.P.) around the time of the coldest, local, last glacial temperatures, have been analyzed to determine their provenance. To accom...
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ftdatacite:10.1594/pangaea.730452 2023-05-15T16:19:48+02:00 Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 Biscaye, Pierre Eginton Grousset, Francis E Revel, Marie van der Gaast, Sjierk Zielinski, G A Vaars, A Kukla, George J 1997 application/zip https://dx.doi.org/10.1594/pangaea.730452 https://doi.pangaea.de/10.1594/PANGAEA.730452 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://store.pangaea.de/Projects/GRIP-GISP/grip-gisp.iso https://dx.doi.org/10.1029/97jc01249 https://store.pangaea.de/Projects/GRIP-GISP/grip-gisp.iso Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Sampling by hand GISP Sampling/drilling ice Greenland Ice Core Projects GRIP/GISP/NGRIP Collection article Supplementary Collection of Datasets 1997 ftdatacite https://doi.org/10.1594/pangaea.730452 https://doi.org/10.1029/97jc01249 2021-11-05T12:55:41Z Samples of dust from the Greenland Ice Sheet Project 2 (GISP2) ice core, Summit, Greenland, dated within marine isotope stage 2 (between 23,340 and 26,180 calendar years B.P.) around the time of the coldest, local, last glacial temperatures, have been analyzed to determine their provenance. To accomplish this, we have compared them with approximately Coeval aeolian sediments (mostly loesses) sampled in possible source areas (PSAs) from around the northern hemisphere. The <5-µm grain-size fraction of these samples was analyzed on the basis that it corresponds to the atmospheric dust component of that time and locale, which was sufficiently fine grained to be transported over long distances. On the basis of comparison of the clay mineralogy and Sr, Nd and Pb isotope composition with ice dust and PSAs and assuming that we have sampled the most important PSAs, we have determined that the probable source area of these GISP2 dusts was in eastern Asia. The dust was not derived from either the midcontinental United States or the Sahara, two more proximal areas that have been suggested as potential sources based on atmospheric circulation modeling. Except for a brief period during an interstadial, when dust transport was exceptionally low (for glacial times) and had a mineralogical composition indicative of a slightly more southern provenance, the source area of the dust did not change significantly during times of variably higher fluxes of dust with larger mean grain size or lower fluxes of dust with smaller mean grain size. This includes the high-dust period that correlates with the Heinrich 2 period of major iceberg discharge into the North Atlantic. Variable wind strengths must therefore be invoked to account for these abrupt and significant changes in dust flux and grain size. Article in Journal/Newspaper GISP Greenland Greenland ice core Greenland Ice Sheet Project GRIP ice core Ice Sheet NGRIP North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Sampling by hand GISP Sampling/drilling ice Greenland Ice Core Projects GRIP/GISP/NGRIP |
spellingShingle |
Drilling/drill rig Sampling by hand GISP Sampling/drilling ice Greenland Ice Core Projects GRIP/GISP/NGRIP Biscaye, Pierre Eginton Grousset, Francis E Revel, Marie van der Gaast, Sjierk Zielinski, G A Vaars, A Kukla, George J Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
topic_facet |
Drilling/drill rig Sampling by hand GISP Sampling/drilling ice Greenland Ice Core Projects GRIP/GISP/NGRIP |
description |
Samples of dust from the Greenland Ice Sheet Project 2 (GISP2) ice core, Summit, Greenland, dated within marine isotope stage 2 (between 23,340 and 26,180 calendar years B.P.) around the time of the coldest, local, last glacial temperatures, have been analyzed to determine their provenance. To accomplish this, we have compared them with approximately Coeval aeolian sediments (mostly loesses) sampled in possible source areas (PSAs) from around the northern hemisphere. The <5-µm grain-size fraction of these samples was analyzed on the basis that it corresponds to the atmospheric dust component of that time and locale, which was sufficiently fine grained to be transported over long distances. On the basis of comparison of the clay mineralogy and Sr, Nd and Pb isotope composition with ice dust and PSAs and assuming that we have sampled the most important PSAs, we have determined that the probable source area of these GISP2 dusts was in eastern Asia. The dust was not derived from either the midcontinental United States or the Sahara, two more proximal areas that have been suggested as potential sources based on atmospheric circulation modeling. Except for a brief period during an interstadial, when dust transport was exceptionally low (for glacial times) and had a mineralogical composition indicative of a slightly more southern provenance, the source area of the dust did not change significantly during times of variably higher fluxes of dust with larger mean grain size or lower fluxes of dust with smaller mean grain size. This includes the high-dust period that correlates with the Heinrich 2 period of major iceberg discharge into the North Atlantic. Variable wind strengths must therefore be invoked to account for these abrupt and significant changes in dust flux and grain size. |
format |
Article in Journal/Newspaper |
author |
Biscaye, Pierre Eginton Grousset, Francis E Revel, Marie van der Gaast, Sjierk Zielinski, G A Vaars, A Kukla, George J |
author_facet |
Biscaye, Pierre Eginton Grousset, Francis E Revel, Marie van der Gaast, Sjierk Zielinski, G A Vaars, A Kukla, George J |
author_sort |
Biscaye, Pierre Eginton |
title |
Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
title_short |
Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
title_full |
Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
title_fullStr |
Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
title_full_unstemmed |
Mineralogy and isotope chemistry of GISP2 and potential source areas, supplement to: Biscaye, Pierre Eginton; Grousset, Francis E; Revel, Marie; van der Gaast, Sjierk; Zielinski, G A; Vaars, A; Kukla, George J (1997): Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 ice core, Summit, Greenland. Journal of Geophysical Research: Oceans, 102(C12), 26765-26782 |
title_sort |
mineralogy and isotope chemistry of gisp2 and potential source areas, supplement to: biscaye, pierre eginton; grousset, francis e; revel, marie; van der gaast, sjierk; zielinski, g a; vaars, a; kukla, george j (1997): asian provenance of glacial dust (stage 2) in the greenland ice sheet project 2 ice core, summit, greenland. journal of geophysical research: oceans, 102(c12), 26765-26782 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1997 |
url |
https://dx.doi.org/10.1594/pangaea.730452 https://doi.pangaea.de/10.1594/PANGAEA.730452 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
GISP Greenland Greenland ice core Greenland Ice Sheet Project GRIP ice core Ice Sheet NGRIP North Atlantic |
genre_facet |
GISP Greenland Greenland ice core Greenland Ice Sheet Project GRIP ice core Ice Sheet NGRIP North Atlantic |
op_relation |
https://store.pangaea.de/Projects/GRIP-GISP/grip-gisp.iso https://dx.doi.org/10.1029/97jc01249 https://store.pangaea.de/Projects/GRIP-GISP/grip-gisp.iso |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.730452 https://doi.org/10.1029/97jc01249 |
_version_ |
1766006247198294016 |