Glacial–interglacial records from sediments in Powell Basin, Antarctica
Abstract Palaeoenvironmental history is reconstructed from diatoms in two sediment cores, GC01-PW02 and GC03-PW02, recovered from Powell Basin, Antarctica. A total of 43 species belonging to 21 genera are identified from GC01-PW02. A total of 61 species belonging to 27 genera are identified from GC0...
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Language: | English |
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Cambridge University Press (CUP)
2018
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Online Access: | http://dx.doi.org/10.1017/s0954102018000408 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000408 |
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crcambridgeupr:10.1017/s0954102018000408 2024-06-23T07:47:02+00:00 Glacial–interglacial records from sediments in Powell Basin, Antarctica Bak, Young-Suk Yoo, Kyu-Cheul Lee, Jae Il Yoon, Ho Il 2018 http://dx.doi.org/10.1017/s0954102018000408 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000408 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms Antarctic Science volume 30, issue 6, page 371-378 ISSN 0954-1020 1365-2079 journal-article 2018 crcambridgeupr https://doi.org/10.1017/s0954102018000408 2024-06-05T04:03:08Z Abstract Palaeoenvironmental history is reconstructed from diatoms in two sediment cores, GC01-PW02 and GC03-PW02, recovered from Powell Basin, Antarctica. A total of 43 species belonging to 21 genera are identified from GC01-PW02. A total of 61 species belonging to 27 genera are identified from GC03-PW02. The number of diatom valves g -1 of dry sediment ranges from 0.1–48.3 × 10 6 valves g -1 . Based on diatom abundance, six assemblage zones were identified from GC01-PW02, and five diatom zones were identified from GC03-PW02. Barren intervals represent glacial periods, while intervals with higher diatom abundances were deposited during interglacial periods and reduced sea ice cover. The occurrence of Rouxia leventerae only within the deepest zone of each of the cores indicates that the core sediments were deposited since marine isotope stage (MIS) 6. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Sea ice Cambridge University Press Powell Basin ENVELOPE(-49.500,-49.500,-62.250,-62.250) Antarctic Science 30 6 371 378 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Palaeoenvironmental history is reconstructed from diatoms in two sediment cores, GC01-PW02 and GC03-PW02, recovered from Powell Basin, Antarctica. A total of 43 species belonging to 21 genera are identified from GC01-PW02. A total of 61 species belonging to 27 genera are identified from GC03-PW02. The number of diatom valves g -1 of dry sediment ranges from 0.1–48.3 × 10 6 valves g -1 . Based on diatom abundance, six assemblage zones were identified from GC01-PW02, and five diatom zones were identified from GC03-PW02. Barren intervals represent glacial periods, while intervals with higher diatom abundances were deposited during interglacial periods and reduced sea ice cover. The occurrence of Rouxia leventerae only within the deepest zone of each of the cores indicates that the core sediments were deposited since marine isotope stage (MIS) 6. |
format |
Article in Journal/Newspaper |
author |
Bak, Young-Suk Yoo, Kyu-Cheul Lee, Jae Il Yoon, Ho Il |
spellingShingle |
Bak, Young-Suk Yoo, Kyu-Cheul Lee, Jae Il Yoon, Ho Il Glacial–interglacial records from sediments in Powell Basin, Antarctica |
author_facet |
Bak, Young-Suk Yoo, Kyu-Cheul Lee, Jae Il Yoon, Ho Il |
author_sort |
Bak, Young-Suk |
title |
Glacial–interglacial records from sediments in Powell Basin, Antarctica |
title_short |
Glacial–interglacial records from sediments in Powell Basin, Antarctica |
title_full |
Glacial–interglacial records from sediments in Powell Basin, Antarctica |
title_fullStr |
Glacial–interglacial records from sediments in Powell Basin, Antarctica |
title_full_unstemmed |
Glacial–interglacial records from sediments in Powell Basin, Antarctica |
title_sort |
glacial–interglacial records from sediments in powell basin, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/s0954102018000408 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000408 |
long_lat |
ENVELOPE(-49.500,-49.500,-62.250,-62.250) |
geographic |
Powell Basin |
geographic_facet |
Powell Basin |
genre |
Antarc* Antarctic Science Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Science Antarctica Sea ice |
op_source |
Antarctic Science volume 30, issue 6, page 371-378 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102018000408 |
container_title |
Antarctic Science |
container_volume |
30 |
container_issue |
6 |
container_start_page |
371 |
op_container_end_page |
378 |
_version_ |
1802650327551311872 |