Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum
This study documents multi-proxy data representing surface water productivity and AMS 14C dates of box (BC3) and gravity (GC2) cores in the Central Basin of the northwestern Ross Sea. Based on AMS 14C dates, a comparison of sediment properties between BC3 and GC2 reveals that BC3 records the complet...
Published in: | Polar Science |
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ftnipr:oai:nipr.repo.nii.ac.jp:00016489 2023-05-15T13:49:00+02:00 Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum 2021-06 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16489 http://id.nii.ac.jp/1291/00016360/ en eng https://doi.org/10.1016/j.polar.2021.100682 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16489 http://id.nii.ac.jp/1291/00016360/ Polar Science, 28, 100682(2021-06) 18739652 Glaciomarine Geochemistry Productivity Ice sheet Continental margin Antarctica Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2021.100682 2022-12-03T19:43:21Z This study documents multi-proxy data representing surface water productivity and AMS 14C dates of box (BC3) and gravity (GC2) cores in the Central Basin of the northwestern Ross Sea. Based on AMS 14C dates, a comparison of sediment properties between BC3 and GC2 reveals that BC3 records the complete Holocene (i.e., interglacial) history, which is correlated to the uppermost part of GC2. The lithostratigraphic succession of GC2 consists of the repetition of contrasting layers distinguished by the productivity proxies. In contrast to the uppermost sediment layer (i.e., interglacial), the subsurface sediment layer (i.e., deglacial) is distinctly characterized by very high biogenic components. Such pronounced biogenic remnants in the deglacial sediments are not explained exclusively by in situ enhanced productivity in the surface water. Our results, thus, suggest that eroded and reworked shelf sediments from a previous interglacial period enriched in biogenic components by the advancing ice sheet might be transported through the melt-water plumes from the grounding line to the Central Basin, to provide high geochemical properties of deglacial sediments. Thus, growth and retreat of the grounded ice sheet played an important role in glaciomarine sedimentation change in the Central Basin of the northwestern Ross Sea. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Polar Science Polar Science Ross Sea National Institute of Polar Research Repository, Japan Ross Sea Central Basin ENVELOPE(178.000,178.000,-72.300,-72.300) Polar Science 28 100682 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Glaciomarine Geochemistry Productivity Ice sheet Continental margin Antarctica |
spellingShingle |
Glaciomarine Geochemistry Productivity Ice sheet Continental margin Antarctica Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
topic_facet |
Glaciomarine Geochemistry Productivity Ice sheet Continental margin Antarctica |
description |
This study documents multi-proxy data representing surface water productivity and AMS 14C dates of box (BC3) and gravity (GC2) cores in the Central Basin of the northwestern Ross Sea. Based on AMS 14C dates, a comparison of sediment properties between BC3 and GC2 reveals that BC3 records the complete Holocene (i.e., interglacial) history, which is correlated to the uppermost part of GC2. The lithostratigraphic succession of GC2 consists of the repetition of contrasting layers distinguished by the productivity proxies. In contrast to the uppermost sediment layer (i.e., interglacial), the subsurface sediment layer (i.e., deglacial) is distinctly characterized by very high biogenic components. Such pronounced biogenic remnants in the deglacial sediments are not explained exclusively by in situ enhanced productivity in the surface water. Our results, thus, suggest that eroded and reworked shelf sediments from a previous interglacial period enriched in biogenic components by the advancing ice sheet might be transported through the melt-water plumes from the grounding line to the Central Basin, to provide high geochemical properties of deglacial sediments. Thus, growth and retreat of the grounded ice sheet played an important role in glaciomarine sedimentation change in the Central Basin of the northwestern Ross Sea. |
format |
Article in Journal/Newspaper |
title |
Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
title_short |
Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
title_full |
Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
title_fullStr |
Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
title_full_unstemmed |
Biological productivity and glaciomarine sedimentation in the Central Basin of the northwestern Ross Sea since the last glacial maximum |
title_sort |
biological productivity and glaciomarine sedimentation in the central basin of the northwestern ross sea since the last glacial maximum |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16489 http://id.nii.ac.jp/1291/00016360/ |
long_lat |
ENVELOPE(178.000,178.000,-72.300,-72.300) |
geographic |
Ross Sea Central Basin |
geographic_facet |
Ross Sea Central Basin |
genre |
Antarc* Antarctica Ice Sheet Polar Science Polar Science Ross Sea |
genre_facet |
Antarc* Antarctica Ice Sheet Polar Science Polar Science Ross Sea |
op_relation |
https://doi.org/10.1016/j.polar.2021.100682 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16489 http://id.nii.ac.jp/1291/00016360/ Polar Science, 28, 100682(2021-06) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2021.100682 |
container_title |
Polar Science |
container_volume |
28 |
container_start_page |
100682 |
_version_ |
1766250395489796096 |