In situ foraminifera in grounding zone diamict: a working hypothesis
Abstract The ice-proximal diamict sediment deposited on the foreset of a grounding zone wedge in Glomar Challenger Basin on the eastern Ross Sea continental shelf yielded a low abundance assemblage of foraminifera at two piston core sites. We found 302 small well-preserved specimens representing 18...
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Online Access: | http://dx.doi.org/10.1017/s0954102016000055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000055 |
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crcambridgeupr:10.1017/s0954102016000055 2024-09-15T17:48:40+00:00 In situ foraminifera in grounding zone diamict: a working hypothesis Bart, Philip J. Coquereau, Laura Warny, Sophie Majewski, Wojciech 2016 http://dx.doi.org/10.1017/s0954102016000055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000055 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 28, issue 4, page 313-321 ISSN 0954-1020 1365-2079 journal-article 2016 crcambridgeupr https://doi.org/10.1017/s0954102016000055 2024-07-31T04:02:33Z Abstract The ice-proximal diamict sediment deposited on the foreset of a grounding zone wedge in Glomar Challenger Basin on the eastern Ross Sea continental shelf yielded a low abundance assemblage of foraminifera at two piston core sites. We found 302 small well-preserved specimens representing 18 species of benthic foraminifera from 825 ml of sediment. Only three poorly preserved specimens of the planktonic foraminifera Neogloboquadrina pachyderma (sinistral) were found. Our combined analyses of preservation state, assemblage composition and stable isotopes suggest that the benthic foraminifera may be in situ . This possibility is of interest to palaeoclimatologists who use ice-proximal sediments on the Antarctic continental shelves to radiocarbon date the post-glacial retreat history. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Neogloboquadrina pachyderma Planktonic foraminifera Ross Sea Cambridge University Press Antarctic Science 28 4 313 321 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The ice-proximal diamict sediment deposited on the foreset of a grounding zone wedge in Glomar Challenger Basin on the eastern Ross Sea continental shelf yielded a low abundance assemblage of foraminifera at two piston core sites. We found 302 small well-preserved specimens representing 18 species of benthic foraminifera from 825 ml of sediment. Only three poorly preserved specimens of the planktonic foraminifera Neogloboquadrina pachyderma (sinistral) were found. Our combined analyses of preservation state, assemblage composition and stable isotopes suggest that the benthic foraminifera may be in situ . This possibility is of interest to palaeoclimatologists who use ice-proximal sediments on the Antarctic continental shelves to radiocarbon date the post-glacial retreat history. |
format |
Article in Journal/Newspaper |
author |
Bart, Philip J. Coquereau, Laura Warny, Sophie Majewski, Wojciech |
spellingShingle |
Bart, Philip J. Coquereau, Laura Warny, Sophie Majewski, Wojciech In situ foraminifera in grounding zone diamict: a working hypothesis |
author_facet |
Bart, Philip J. Coquereau, Laura Warny, Sophie Majewski, Wojciech |
author_sort |
Bart, Philip J. |
title |
In situ foraminifera in grounding zone diamict: a working hypothesis |
title_short |
In situ foraminifera in grounding zone diamict: a working hypothesis |
title_full |
In situ foraminifera in grounding zone diamict: a working hypothesis |
title_fullStr |
In situ foraminifera in grounding zone diamict: a working hypothesis |
title_full_unstemmed |
In situ foraminifera in grounding zone diamict: a working hypothesis |
title_sort |
in situ foraminifera in grounding zone diamict: a working hypothesis |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/s0954102016000055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000055 |
genre |
Antarc* Antarctic Antarctic Science Neogloboquadrina pachyderma Planktonic foraminifera Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Neogloboquadrina pachyderma Planktonic foraminifera Ross Sea |
op_source |
Antarctic Science volume 28, issue 4, page 313-321 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102016000055 |
container_title |
Antarctic Science |
container_volume |
28 |
container_issue |
4 |
container_start_page |
313 |
op_container_end_page |
321 |
_version_ |
1810290159417032704 |