High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea
Upper Quaternary pelagic and hemipelagic sediments from the Scotia Sea and South Scotia Ridge range from diatom ooze to diatom-bearing mud. Diatom content increases northwards, and at most sites diatom-rich and diatom-poor sediments alternate downcore on a scale of metres. A local stratigraphy is ba...
Published in: | Marine Micropaleontology |
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Elsevier
1992
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Online Access: | http://nora.nerc.ac.uk/id/eprint/518612/ https://doi.org/10.1016/0377-8398(92)90029-J |
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ftnerc:oai:nora.nerc.ac.uk:518612 2023-05-15T13:49:34+02:00 High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea Jordan, R.W. Pudsey, C.J. 1992-07 http://nora.nerc.ac.uk/id/eprint/518612/ https://doi.org/10.1016/0377-8398(92)90029-J unknown Elsevier Jordan, R.W.; Pudsey, C.J. 1992 High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea. Marine Micropaleontology, 19 (3). 201-237. https://doi.org/10.1016/0377-8398(92)90029-J <https://doi.org/10.1016/0377-8398(92)90029-J> Publication - Article PeerReviewed 1992 ftnerc https://doi.org/10.1016/0377-8398(92)90029-J 2023-02-04T19:45:46Z Upper Quaternary pelagic and hemipelagic sediments from the Scotia Sea and South Scotia Ridge range from diatom ooze to diatom-bearing mud. Diatom content increases northwards, and at most sites diatom-rich and diatom-poor sediments alternate downcore on a scale of metres. A local stratigraphy is based on relative abundance of six prominent diatom taxa:Eucampia antarctica, Rhizosolenia spp.,Thalassiosira spp.,Chaetoceros spores,Nitzschia kerguelensis and otherNitzschia species and one silicoflagellate species (Distephanus speculum). These stratigraphic units defined using diatoms are correlated with radiolarian abundance stratigraphy (Cycladophora davisiana) and with palaeomagnetic stratigraphy. Information from modern environments (phytoplankton and sediment trap studies) indicates that changes in diatom species composition are related to N-S movement of the winter ice edge and of the Antarctic Convergence. Article in Journal/Newspaper Antarc* Antarctic Antarctica Scotia Sea Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Scotia Sea South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) Marine Micropaleontology 19 3 201 237 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Upper Quaternary pelagic and hemipelagic sediments from the Scotia Sea and South Scotia Ridge range from diatom ooze to diatom-bearing mud. Diatom content increases northwards, and at most sites diatom-rich and diatom-poor sediments alternate downcore on a scale of metres. A local stratigraphy is based on relative abundance of six prominent diatom taxa:Eucampia antarctica, Rhizosolenia spp.,Thalassiosira spp.,Chaetoceros spores,Nitzschia kerguelensis and otherNitzschia species and one silicoflagellate species (Distephanus speculum). These stratigraphic units defined using diatoms are correlated with radiolarian abundance stratigraphy (Cycladophora davisiana) and with palaeomagnetic stratigraphy. Information from modern environments (phytoplankton and sediment trap studies) indicates that changes in diatom species composition are related to N-S movement of the winter ice edge and of the Antarctic Convergence. |
format |
Article in Journal/Newspaper |
author |
Jordan, R.W. Pudsey, C.J. |
spellingShingle |
Jordan, R.W. Pudsey, C.J. High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
author_facet |
Jordan, R.W. Pudsey, C.J. |
author_sort |
Jordan, R.W. |
title |
High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
title_short |
High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
title_full |
High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
title_fullStr |
High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
title_full_unstemmed |
High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea |
title_sort |
high-resolution diatom stratigraphy of quaternary sediments from the scotia sea |
publisher |
Elsevier |
publishDate |
1992 |
url |
http://nora.nerc.ac.uk/id/eprint/518612/ https://doi.org/10.1016/0377-8398(92)90029-J |
long_lat |
ENVELOPE(-46.500,-46.500,-60.000,-60.000) |
geographic |
Antarctic The Antarctic Scotia Sea South Scotia Ridge |
geographic_facet |
Antarctic The Antarctic Scotia Sea South Scotia Ridge |
genre |
Antarc* Antarctic Antarctica Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctica Scotia Sea |
op_relation |
Jordan, R.W.; Pudsey, C.J. 1992 High-resolution diatom stratigraphy of Quaternary sediments from the Scotia Sea. Marine Micropaleontology, 19 (3). 201-237. https://doi.org/10.1016/0377-8398(92)90029-J <https://doi.org/10.1016/0377-8398(92)90029-J> |
op_doi |
https://doi.org/10.1016/0377-8398(92)90029-J |
container_title |
Marine Micropaleontology |
container_volume |
19 |
container_issue |
3 |
container_start_page |
201 |
op_container_end_page |
237 |
_version_ |
1766251726368669696 |