Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018
Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt...
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Arctic Data Center
2020
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Online Access: | https://doi.org/10.18739/A2R785P9T |
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dataone:doi:10.18739/A2R785P9T 2024-06-03T18:46:51+00:00 Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 Shaun A. Marcott Washington Land, Greenland ENVELOPE(-64.2,-59.3,80.7,79.9) BEGINDATE: 2015-01-01T00:00:00Z ENDDATE: 2018-01-01T00:00:00Z 2020-01-01T00:00:00Z https://doi.org/10.18739/A2R785P9T unknown Arctic Data Center Glaciers Glaciation Dataset 2020 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2R785P9T 2024-06-03T18:16:30Z Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. The research took place from 2015 to 2018. These moraine chronologies indicate a Little Ice Age advance of the ice sheet margin before ~0.3 kiloannum (ka) and a possible equivalent advance of similar magnitude prior to ~2.8 ka. An early Holocene moraine at Humboldt Glacier was abandoned by 8.3 ± 1.7 ka and is contemporaneous with other moraines deposited along the entire western GIS margin. This widespread ice margin stability between ~9 and 8 ka indicates that while this margin was influenced by warming atmospheric temperatures during the early Holocene, the warming was likely overprinted with the effect of the abrupt climate cooling at 9.3 and 8.2 ka. Dataset glacier Greenland Humboldt Glacier Ice Sheet Petermann glacier Washington land Arctic Data Center (via DataONE) Greenland Washington Land ENVELOPE(-66.000,-66.000,80.250,80.250) ENVELOPE(-64.2,-59.3,80.7,79.9) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Glaciers Glaciation |
spellingShingle |
Glaciers Glaciation Shaun A. Marcott Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
topic_facet |
Glaciers Glaciation |
description |
Terrestrial chronologies from southern Greenland provide a detailed deglacial history of the Greenland Ice Sheet (GIS). The northern GIS margin history, however, is less established. Here we present surface exposure ages from moraines associated with two large outlet glaciers, Petermann and Humboldt, in the northwestern sector of the GIS. The research took place from 2015 to 2018. These moraine chronologies indicate a Little Ice Age advance of the ice sheet margin before ~0.3 kiloannum (ka) and a possible equivalent advance of similar magnitude prior to ~2.8 ka. An early Holocene moraine at Humboldt Glacier was abandoned by 8.3 ± 1.7 ka and is contemporaneous with other moraines deposited along the entire western GIS margin. This widespread ice margin stability between ~9 and 8 ka indicates that while this margin was influenced by warming atmospheric temperatures during the early Holocene, the warming was likely overprinted with the effect of the abrupt climate cooling at 9.3 and 8.2 ka. |
format |
Dataset |
author |
Shaun A. Marcott |
author_facet |
Shaun A. Marcott |
author_sort |
Shaun A. Marcott |
title |
Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
title_short |
Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
title_full |
Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
title_fullStr |
Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
title_full_unstemmed |
Washington Land, Petermann Glacier, Greenland, Late Pleistocene to Holocene Beryllium-10 Moraine Ages, 2015 -2018 |
title_sort |
washington land, petermann glacier, greenland, late pleistocene to holocene beryllium-10 moraine ages, 2015 -2018 |
publisher |
Arctic Data Center |
publishDate |
2020 |
url |
https://doi.org/10.18739/A2R785P9T |
op_coverage |
Washington Land, Greenland ENVELOPE(-64.2,-59.3,80.7,79.9) BEGINDATE: 2015-01-01T00:00:00Z ENDDATE: 2018-01-01T00:00:00Z |
long_lat |
ENVELOPE(-66.000,-66.000,80.250,80.250) ENVELOPE(-64.2,-59.3,80.7,79.9) |
geographic |
Greenland Washington Land |
geographic_facet |
Greenland Washington Land |
genre |
glacier Greenland Humboldt Glacier Ice Sheet Petermann glacier Washington land |
genre_facet |
glacier Greenland Humboldt Glacier Ice Sheet Petermann glacier Washington land |
op_doi |
https://doi.org/10.18739/A2R785P9T |
_version_ |
1800871987523878912 |