Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current
Deep-water agglutinated foraminifera on the crest of the Hovgård Ridge, west of Spitsbergen, consist mostly of large tubular astrorhizids. At a boxcore station collected from the crest of Hovgård Ridge at a water depth of 1169 m, the sediment surface was covered with patches of large (1 mm diameter)...
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Annales Societatis Geologorum Poloniae
2015
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ftjgq:oai:geojournals.pgi.gov.pl:article/23642 2023-05-15T16:18:06+02:00 Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current Kaminski, Michael A. Niessen, Frank Shipboard Geoscience Party, The PS87 2015-05-27 application/pdf https://gq.pgi.gov.pl/asgp/article/view/23642 eng eng Annales Societatis Geologorum Poloniae https://gq.pgi.gov.pl/asgp/article/view/23642/16449 Annales Societatis Geologorum Poloniae; Vol 85, No 1 (2015); 309-320, doi:10.14241/asgp.2015.006 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjgq 2019-08-13T19:05:52Z Deep-water agglutinated foraminifera on the crest of the Hovgård Ridge, west of Spitsbergen, consist mostly of large tubular astrorhizids. At a boxcore station collected from the crest of Hovgård Ridge at a water depth of 1169 m, the sediment surface was covered with patches of large (1 mm diameter) tubular forms, belonging mostly to the species Astrorhiza crassatina Brady, with smaller numbers of Saccorhiza, Hyperammina, and Psammosiphonella. Non-tubular species consisted mainly of opportunistic forms, such as Psammosphaera and Reophax. The presence of large suspension-feeding tubular genera as well as opportunistic forms point to the presence of deep currents at this locality that are strong enough to disturb the benthic fauna. This is confirmed by data obtained from sediment echosounding, which exhibit lateral variation in relative sedimentation rates within the Pleistocene sedimentary drape covering the ridge, indicative of winnowing in a south-easterly direction. Article in Journal/Newspaper Fram Strait Spitsbergen Geological Quarterly |
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Open Polar |
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Geological Quarterly |
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ftjgq |
language |
English |
description |
Deep-water agglutinated foraminifera on the crest of the Hovgård Ridge, west of Spitsbergen, consist mostly of large tubular astrorhizids. At a boxcore station collected from the crest of Hovgård Ridge at a water depth of 1169 m, the sediment surface was covered with patches of large (1 mm diameter) tubular forms, belonging mostly to the species Astrorhiza crassatina Brady, with smaller numbers of Saccorhiza, Hyperammina, and Psammosiphonella. Non-tubular species consisted mainly of opportunistic forms, such as Psammosphaera and Reophax. The presence of large suspension-feeding tubular genera as well as opportunistic forms point to the presence of deep currents at this locality that are strong enough to disturb the benthic fauna. This is confirmed by data obtained from sediment echosounding, which exhibit lateral variation in relative sedimentation rates within the Pleistocene sedimentary drape covering the ridge, indicative of winnowing in a south-easterly direction. |
format |
Article in Journal/Newspaper |
author |
Kaminski, Michael A. Niessen, Frank Shipboard Geoscience Party, The PS87 |
spellingShingle |
Kaminski, Michael A. Niessen, Frank Shipboard Geoscience Party, The PS87 Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
author_facet |
Kaminski, Michael A. Niessen, Frank Shipboard Geoscience Party, The PS87 |
author_sort |
Kaminski, Michael A. |
title |
Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
title_short |
Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
title_full |
Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
title_fullStr |
Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
title_full_unstemmed |
Modern agglutinated Foraminifera from the Hovgård Ridge, Fram Strait, west of Spitsbergen: evidence for a deep bottom current |
title_sort |
modern agglutinated foraminifera from the hovgård ridge, fram strait, west of spitsbergen: evidence for a deep bottom current |
publisher |
Annales Societatis Geologorum Poloniae |
publishDate |
2015 |
url |
https://gq.pgi.gov.pl/asgp/article/view/23642 |
genre |
Fram Strait Spitsbergen |
genre_facet |
Fram Strait Spitsbergen |
op_source |
Annales Societatis Geologorum Poloniae; Vol 85, No 1 (2015); 309-320, doi:10.14241/asgp.2015.006 |
op_relation |
https://gq.pgi.gov.pl/asgp/article/view/23642/16449 |
_version_ |
1766004225142161408 |