(Table 1) Arctic radiocarbon dates from sediment core PS1230-1
Ice sheets in the North American Arctic and, to a lesser extent, those in northern Eurasia calved large quantities of icebergs that drifted through Fram Strait into the Greenland Sea several times during the late Pleistocene. These icebergs deposited Fe oxide grains (45-250 mm) and coarse lithic cla...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.738278 2023-05-15T14:25:42+02:00 (Table 1) Arctic radiocarbon dates from sediment core PS1230-1 Darby, Dennis A Bischof, Jens Spielhagen, Robert F Marshall, Steven A Herman, Stephen W LATITUDE: 78.855300 * LONGITUDE: -4.781200 * DATE/TIME START: 1984-08-16T00:00:00 * DATE/TIME END: 1984-08-16T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.005 m * MAXIMUM DEPTH, sediment/rock: 0.445 m 2002-05-19 text/tab-separated-values, 84 data points https://doi.pangaea.de/10.1594/PANGAEA.738278 https://doi.org/10.1594/PANGAEA.738278 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.738278 https://doi.org/10.1594/PANGAEA.738278 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Darby, Dennis A; Bischof, Jens; Spielhagen, Robert F; Marshall, Steven A; Herman, Stephen W (2002): Arctic ice export events and their potential impact on global climate during the late Pleistocene. Paleoceanography, 17(2), 1025, https://doi.org/10.1029/2001PA000639 Age 14C AMS dated dated standard deviation ARK-II/4 AWI_Paleo Depth bottom/max sediment/rock top/min Fram Strait Giant box corer GIK23230-1 PS05/416 GKG Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS05 PS1230-1 Sample code/label Dataset 2002 ftpangaea https://doi.org/10.1594/PANGAEA.738278 https://doi.org/10.1029/2001PA000639 2023-01-20T08:50:07Z Ice sheets in the North American Arctic and, to a lesser extent, those in northern Eurasia calved large quantities of icebergs that drifted through Fram Strait into the Greenland Sea several times during the late Pleistocene. These icebergs deposited Fe oxide grains (45-250 mm) and coarse lithic clasts >250 mm matched to specific circum-Arctic sources. Four massive Arctic iceberg export events are identified from the Laurentide and the Innuitian ice sheets, between 14 and 34 ka (calendar years) in a sediment core from Fram Strait. These relatively short duration (<1-4 kyr) events contain 3-5 times the background levels of Fe oxide grains. They began suddenly, as indicated by a steep rise in the number of grains matched to an ice sheet source, suggesting rapid purges of ice through Fram Strait, due perhaps to collapse of ice sheets. The larger events from the northwestern Laurentide ice sheet are preceded by events from the Innuitian ice sheet. Despite the chronological uncertainties, the Arctic export events appear to occur prior to Heinrich events. Dataset Arctic Arctic Fram Strait Greenland Greenland Sea Ice Sheet Iceberg* PANGAEA - Data Publisher for Earth & Environmental Science Arctic Greenland ENVELOPE(-4.781200,-4.781200,78.855300,78.855300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age 14C AMS dated dated standard deviation ARK-II/4 AWI_Paleo Depth bottom/max sediment/rock top/min Fram Strait Giant box corer GIK23230-1 PS05/416 GKG Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS05 PS1230-1 Sample code/label |
spellingShingle |
Age 14C AMS dated dated standard deviation ARK-II/4 AWI_Paleo Depth bottom/max sediment/rock top/min Fram Strait Giant box corer GIK23230-1 PS05/416 GKG Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS05 PS1230-1 Sample code/label Darby, Dennis A Bischof, Jens Spielhagen, Robert F Marshall, Steven A Herman, Stephen W (Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
topic_facet |
Age 14C AMS dated dated standard deviation ARK-II/4 AWI_Paleo Depth bottom/max sediment/rock top/min Fram Strait Giant box corer GIK23230-1 PS05/416 GKG Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS05 PS1230-1 Sample code/label |
description |
Ice sheets in the North American Arctic and, to a lesser extent, those in northern Eurasia calved large quantities of icebergs that drifted through Fram Strait into the Greenland Sea several times during the late Pleistocene. These icebergs deposited Fe oxide grains (45-250 mm) and coarse lithic clasts >250 mm matched to specific circum-Arctic sources. Four massive Arctic iceberg export events are identified from the Laurentide and the Innuitian ice sheets, between 14 and 34 ka (calendar years) in a sediment core from Fram Strait. These relatively short duration (<1-4 kyr) events contain 3-5 times the background levels of Fe oxide grains. They began suddenly, as indicated by a steep rise in the number of grains matched to an ice sheet source, suggesting rapid purges of ice through Fram Strait, due perhaps to collapse of ice sheets. The larger events from the northwestern Laurentide ice sheet are preceded by events from the Innuitian ice sheet. Despite the chronological uncertainties, the Arctic export events appear to occur prior to Heinrich events. |
format |
Dataset |
author |
Darby, Dennis A Bischof, Jens Spielhagen, Robert F Marshall, Steven A Herman, Stephen W |
author_facet |
Darby, Dennis A Bischof, Jens Spielhagen, Robert F Marshall, Steven A Herman, Stephen W |
author_sort |
Darby, Dennis A |
title |
(Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
title_short |
(Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
title_full |
(Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
title_fullStr |
(Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
title_full_unstemmed |
(Table 1) Arctic radiocarbon dates from sediment core PS1230-1 |
title_sort |
(table 1) arctic radiocarbon dates from sediment core ps1230-1 |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.738278 https://doi.org/10.1594/PANGAEA.738278 |
op_coverage |
LATITUDE: 78.855300 * LONGITUDE: -4.781200 * DATE/TIME START: 1984-08-16T00:00:00 * DATE/TIME END: 1984-08-16T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.005 m * MAXIMUM DEPTH, sediment/rock: 0.445 m |
long_lat |
ENVELOPE(-4.781200,-4.781200,78.855300,78.855300) |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Fram Strait Greenland Greenland Sea Ice Sheet Iceberg* |
genre_facet |
Arctic Arctic Fram Strait Greenland Greenland Sea Ice Sheet Iceberg* |
op_source |
Supplement to: Darby, Dennis A; Bischof, Jens; Spielhagen, Robert F; Marshall, Steven A; Herman, Stephen W (2002): Arctic ice export events and their potential impact on global climate during the late Pleistocene. Paleoceanography, 17(2), 1025, https://doi.org/10.1029/2001PA000639 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.738278 https://doi.org/10.1594/PANGAEA.738278 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.738278 https://doi.org/10.1029/2001PA000639 |
_version_ |
1766298153637642240 |