10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland
The million-year behavior of ice sheets is poorly understood because younger glaciations remove the terrestrial record of older advances. However, material shed from continents is preserved as marine sediment that can be analyzed to infer glacial process and history. Here, we use measurements of in...
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2016
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dataone:doi:10.18739/A2D795B3Q 2024-06-03T18:46:49+00:00 10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland Paul Bierman The ODP Core site 918 in the Irminger Basin The ODP Core site 987 off the east coast of Greenland near Scoresby Sund ENVELOPE(-38.639,-38.6388,63.0932,63.0929) BEGINDATE: ENDDATE: 2016-01-01T00:00:00Z 2016-11-13T00:00:00Z https://doi.org/10.18739/A2D795B3Q unknown Arctic Data Center cosmogenic marine sediment Plio-Pleistocene Dataset 2016 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2D795B3Q 2024-06-03T18:16:24Z The million-year behavior of ice sheets is poorly understood because younger glaciations remove the terrestrial record of older advances. However, material shed from continents is preserved as marine sediment that can be analyzed to infer glacial process and history. Here, we use measurements of in situ produced cosmogenic 10Be and 26Al in marine sediment cores to understand the long-term behavior of the eastern Greenland Ice Sheet. We find a progressive, order-of-magnitude decline in 10Be over the past 7.5 Myr, consistent with deep, ongoing erosion by ice of the pre-icehouse Greenlandic landscape. 26Al/10Be indicates that much of East Greenland was covered by ice for most of the Pleistocene. At major climate transitions, isotope concentrations and 26Al/10Be change, consistent with ice sheet expansion into previously ice-free terrain. The detrital cosmogenic history reflects major events recorded in the marine benthic δ18O record, confirming that the Greenland Ice Sheet consistently responded to global climate forcing. Dataset East Greenland Greenland greenlandic Ice Sheet Scoresby Sund Arctic Data Center (via DataONE) Greenland Sund ENVELOPE(13.644,13.644,66.207,66.207) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) ENVELOPE(-38.639,-38.6388,63.0932,63.0929) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
cosmogenic marine sediment Plio-Pleistocene |
spellingShingle |
cosmogenic marine sediment Plio-Pleistocene Paul Bierman 10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
topic_facet |
cosmogenic marine sediment Plio-Pleistocene |
description |
The million-year behavior of ice sheets is poorly understood because younger glaciations remove the terrestrial record of older advances. However, material shed from continents is preserved as marine sediment that can be analyzed to infer glacial process and history. Here, we use measurements of in situ produced cosmogenic 10Be and 26Al in marine sediment cores to understand the long-term behavior of the eastern Greenland Ice Sheet. We find a progressive, order-of-magnitude decline in 10Be over the past 7.5 Myr, consistent with deep, ongoing erosion by ice of the pre-icehouse Greenlandic landscape. 26Al/10Be indicates that much of East Greenland was covered by ice for most of the Pleistocene. At major climate transitions, isotope concentrations and 26Al/10Be change, consistent with ice sheet expansion into previously ice-free terrain. The detrital cosmogenic history reflects major events recorded in the marine benthic δ18O record, confirming that the Greenland Ice Sheet consistently responded to global climate forcing. |
format |
Dataset |
author |
Paul Bierman |
author_facet |
Paul Bierman |
author_sort |
Paul Bierman |
title |
10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
title_short |
10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
title_full |
10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
title_fullStr |
10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
title_full_unstemmed |
10Be and 26Al isotopic data in ODP marine sediment cores near eastern Greenland |
title_sort |
10be and 26al isotopic data in odp marine sediment cores near eastern greenland |
publisher |
Arctic Data Center |
publishDate |
2016 |
url |
https://doi.org/10.18739/A2D795B3Q |
op_coverage |
The ODP Core site 918 in the Irminger Basin The ODP Core site 987 off the east coast of Greenland near Scoresby Sund ENVELOPE(-38.639,-38.6388,63.0932,63.0929) BEGINDATE: ENDDATE: 2016-01-01T00:00:00Z |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(-36.000,-36.000,61.000,61.000) ENVELOPE(-38.639,-38.6388,63.0932,63.0929) |
geographic |
Greenland Sund Scoresby Scoresby Sund Irminger Basin |
geographic_facet |
Greenland Sund Scoresby Scoresby Sund Irminger Basin |
genre |
East Greenland Greenland greenlandic Ice Sheet Scoresby Sund |
genre_facet |
East Greenland Greenland greenlandic Ice Sheet Scoresby Sund |
op_doi |
https://doi.org/10.18739/A2D795B3Q |
_version_ |
1800871636059029504 |