Age determination of Antarctic marine sediments
We present the first circum-East Antarctic chronology for the Holocene, based on 17 radiocarbon dates generated by the accelerator method. Marine sediments from around East Antarctica contain a consistent, high-resolution record of terrigenous (ice-proximal) and biogenic (open-marine) sedimentation...
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1991
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735014 2024-09-15T17:41:59+00:00 Age determination of Antarctic marine sediments Domack, Eugene W Jull, A J Timothy Nakao, Seizo MEDIAN LATITUDE: -67.078500 * MEDIAN LONGITUDE: 125.245475 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 76.681900 * NORTH-BOUND LATITUDE: -66.250000 * EAST-BOUND LONGITUDE: 143.350000 * DATE/TIME START: 1979-01-01T00:00:00 * DATE/TIME END: 1988-01-27T13:15:00 1991 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.735014 https://doi.org/10.1594/PANGAEA.735014 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735014 https://doi.org/10.1594/PANGAEA.735014 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Domack, Eugene W; Jull, A J Timothy; Nakao, Seizo (1991): Advance of east Antarctic outlet glaciers during the hypsithermal: implications for the volume state of the Antarctic ice sheet under global warming. Geology, 19(11), 1059-1062, https://doi.org/10.1130/0091-7613(1991)019%3C1059:AOEAOG%3E2.3.CO;2 #5/DF79/12 119-740A Core302 DF79 DF79.009-GB DF79.012-GB DRILL Drilling/drill rig GC Glacier Grab Gravity corer Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Southern Ocean dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.73501410.1130/0091-7613(1991)019%3C1059:AOEAOG%3E2.3.CO;2 2024-07-24T02:31:20Z We present the first circum-East Antarctic chronology for the Holocene, based on 17 radiocarbon dates generated by the accelerator method. Marine sediments from around East Antarctica contain a consistent, high-resolution record of terrigenous (ice-proximal) and biogenic (open-marine) sedimentation during Holocene time. This record demonstrates that biogenic sedimentation beneath the open-marine environment on the continental shelf has been restricted to approximately the past 4 ka, whereas a period of terrigenous sedimentation related to grounding line advance of ice tongues and ice shelves took place between 7 and 4 ka. An earlier period of open-marine (biogenic sedimentation) conditions following the late Pleistocene glacial maximum is recognized from the Prydz Bay (Ocean Drilling Program) record between 10.7 and 7.3 ka. Clearly, the response of outlet systems along the periphery of the East Antarctic ice sheet during the mid-Holocene was expansion. This may have been a direct consequence of climate warming during an Antarctic 'Hypsithermal'. Temperature-accumulation relations for the Antarctic indicate that warming will cause a significant increase in accumulation rather than in ablation. Models that predict a positive mass balance (growth) of the Antarctic ice sheet under global warming are supported by the mid-Holocene data presented herein. Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Prydz Bay Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(76.681900,143.350000,-66.250000,-68.764000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
#5/DF79/12 119-740A Core302 DF79 DF79.009-GB DF79.012-GB DRILL Drilling/drill rig GC Glacier Grab Gravity corer Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Southern Ocean |
spellingShingle |
#5/DF79/12 119-740A Core302 DF79 DF79.009-GB DF79.012-GB DRILL Drilling/drill rig GC Glacier Grab Gravity corer Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Southern Ocean Domack, Eugene W Jull, A J Timothy Nakao, Seizo Age determination of Antarctic marine sediments |
topic_facet |
#5/DF79/12 119-740A Core302 DF79 DF79.009-GB DF79.012-GB DRILL Drilling/drill rig GC Glacier Grab Gravity corer Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Southern Ocean |
description |
We present the first circum-East Antarctic chronology for the Holocene, based on 17 radiocarbon dates generated by the accelerator method. Marine sediments from around East Antarctica contain a consistent, high-resolution record of terrigenous (ice-proximal) and biogenic (open-marine) sedimentation during Holocene time. This record demonstrates that biogenic sedimentation beneath the open-marine environment on the continental shelf has been restricted to approximately the past 4 ka, whereas a period of terrigenous sedimentation related to grounding line advance of ice tongues and ice shelves took place between 7 and 4 ka. An earlier period of open-marine (biogenic sedimentation) conditions following the late Pleistocene glacial maximum is recognized from the Prydz Bay (Ocean Drilling Program) record between 10.7 and 7.3 ka. Clearly, the response of outlet systems along the periphery of the East Antarctic ice sheet during the mid-Holocene was expansion. This may have been a direct consequence of climate warming during an Antarctic 'Hypsithermal'. Temperature-accumulation relations for the Antarctic indicate that warming will cause a significant increase in accumulation rather than in ablation. Models that predict a positive mass balance (growth) of the Antarctic ice sheet under global warming are supported by the mid-Holocene data presented herein. |
format |
Other/Unknown Material |
author |
Domack, Eugene W Jull, A J Timothy Nakao, Seizo |
author_facet |
Domack, Eugene W Jull, A J Timothy Nakao, Seizo |
author_sort |
Domack, Eugene W |
title |
Age determination of Antarctic marine sediments |
title_short |
Age determination of Antarctic marine sediments |
title_full |
Age determination of Antarctic marine sediments |
title_fullStr |
Age determination of Antarctic marine sediments |
title_full_unstemmed |
Age determination of Antarctic marine sediments |
title_sort |
age determination of antarctic marine sediments |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735014 https://doi.org/10.1594/PANGAEA.735014 |
op_coverage |
MEDIAN LATITUDE: -67.078500 * MEDIAN LONGITUDE: 125.245475 * SOUTH-BOUND LATITUDE: -68.764000 * WEST-BOUND LONGITUDE: 76.681900 * NORTH-BOUND LATITUDE: -66.250000 * EAST-BOUND LONGITUDE: 143.350000 * DATE/TIME START: 1979-01-01T00:00:00 * DATE/TIME END: 1988-01-27T13:15:00 |
long_lat |
ENVELOPE(76.681900,143.350000,-66.250000,-68.764000) |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Prydz Bay Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves Prydz Bay Southern Ocean |
op_source |
Supplement to: Domack, Eugene W; Jull, A J Timothy; Nakao, Seizo (1991): Advance of east Antarctic outlet glaciers during the hypsithermal: implications for the volume state of the Antarctic ice sheet under global warming. Geology, 19(11), 1059-1062, https://doi.org/10.1130/0091-7613(1991)019%3C1059:AOEAOG%3E2.3.CO;2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735014 https://doi.org/10.1594/PANGAEA.735014 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.73501410.1130/0091-7613(1991)019%3C1059:AOEAOG%3E2.3.CO;2 |
_version_ |
1810488312050221056 |