Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic
Abundance variations of six Pliocene species of the nannofossil genus Discoaster were analyzed over the time interval 1.89–2.95 Ma at five sites in the North Atlantic; DSDP 552 (56°N), DSDP 607 (41°N), ODP 659 (18°N), ODP 658 (20°N) and ODP 662 (1°S). Individual species are compared between the five...
Published in: | Journal of Micropalaeontology |
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GSL Publishing
1991
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00038354 2023-05-15T17:30:39+02:00 Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic Chepstow-Lusty, Alex Backman, Jan Shackleton, Nicholas J. 1991-03 electronic https://doi.org/10.1144/jm.9.2.133 https://noa.gwlb.de/receive/cop_mods_00038354 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00038032/jm-9-133-1991.pdf https://jm.copernicus.org/articles/9/133/1991/jm-9-133-1991.pdf eng eng GSL Publishing Journal of Micropalaeontology -- http://www.bibliothek.uni-regensburg.de/ezeit/?2053393 -- https://www.j-micropalaeontol.net/volumes.html -- http://jm.geoscienceworld.org/ -- 2041-4978 https://doi.org/10.1144/jm.9.2.133 https://noa.gwlb.de/receive/cop_mods_00038354 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00038032/jm-9-133-1991.pdf https://jm.copernicus.org/articles/9/133/1991/jm-9-133-1991.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 1991 ftnonlinearchiv https://doi.org/10.1144/jm.9.2.133 2022-02-08T22:43:06Z Abundance variations of six Pliocene species of the nannofossil genus Discoaster were analyzed over the time interval 1.89–2.95 Ma at five sites in the North Atlantic; DSDP 552 (56°N), DSDP 607 (41°N), ODP 659 (18°N), ODP 658 (20°N) and ODP 662 (1°S). Individual species are compared between the five sites as a percentage of the total Discoaster assemblage, using age models based mainly on Discoaster datums (3 control points used at each site). The sampling interval is approximately 3 kyrs. Discoaster brouweri, the only species covering the complete time interval became a less significant component of the assemblages with increasing latitude during the interval prior to 2.3 Ma. Discoaster triradiatus shows a distinct abundance acme at all sites between 1.89–2.7 Ma. Discoaster surculus increased in relative abundance with higher latitudes and upwelling conditions (ODP Site 658). Discoaster pentaradiatus is an important component of the assemblages at all sites, but displays an inverse abundance relationship with D. surculus as a function of increasing latitude and upwelling conditions. Discoaster tamalis and Discoaster asymmetricus are reduced at low latitudes and in upwelling conditions and increase relative to D. brouweri at higher latitudes, where there is strong evidence for taxonomic affinity. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Journal of Micropalaeontology 9 2 133 143 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Chepstow-Lusty, Alex Backman, Jan Shackleton, Nicholas J. Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
topic_facet |
article Verlagsveröffentlichung |
description |
Abundance variations of six Pliocene species of the nannofossil genus Discoaster were analyzed over the time interval 1.89–2.95 Ma at five sites in the North Atlantic; DSDP 552 (56°N), DSDP 607 (41°N), ODP 659 (18°N), ODP 658 (20°N) and ODP 662 (1°S). Individual species are compared between the five sites as a percentage of the total Discoaster assemblage, using age models based mainly on Discoaster datums (3 control points used at each site). The sampling interval is approximately 3 kyrs. Discoaster brouweri, the only species covering the complete time interval became a less significant component of the assemblages with increasing latitude during the interval prior to 2.3 Ma. Discoaster triradiatus shows a distinct abundance acme at all sites between 1.89–2.7 Ma. Discoaster surculus increased in relative abundance with higher latitudes and upwelling conditions (ODP Site 658). Discoaster pentaradiatus is an important component of the assemblages at all sites, but displays an inverse abundance relationship with D. surculus as a function of increasing latitude and upwelling conditions. Discoaster tamalis and Discoaster asymmetricus are reduced at low latitudes and in upwelling conditions and increase relative to D. brouweri at higher latitudes, where there is strong evidence for taxonomic affinity. |
format |
Article in Journal/Newspaper |
author |
Chepstow-Lusty, Alex Backman, Jan Shackleton, Nicholas J. |
author_facet |
Chepstow-Lusty, Alex Backman, Jan Shackleton, Nicholas J. |
author_sort |
Chepstow-Lusty, Alex |
title |
Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
title_short |
Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
title_full |
Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
title_fullStr |
Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
title_full_unstemmed |
Palaeoclimatic control of Upper Pliocene Discoaster assemblages in the North Atlantic |
title_sort |
palaeoclimatic control of upper pliocene discoaster assemblages in the north atlantic |
publisher |
GSL Publishing |
publishDate |
1991 |
url |
https://doi.org/10.1144/jm.9.2.133 https://noa.gwlb.de/receive/cop_mods_00038354 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00038032/jm-9-133-1991.pdf https://jm.copernicus.org/articles/9/133/1991/jm-9-133-1991.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of Micropalaeontology -- http://www.bibliothek.uni-regensburg.de/ezeit/?2053393 -- https://www.j-micropalaeontol.net/volumes.html -- http://jm.geoscienceworld.org/ -- 2041-4978 https://doi.org/10.1144/jm.9.2.133 https://noa.gwlb.de/receive/cop_mods_00038354 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00038032/jm-9-133-1991.pdf https://jm.copernicus.org/articles/9/133/1991/jm-9-133-1991.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1144/jm.9.2.133 |
container_title |
Journal of Micropalaeontology |
container_volume |
9 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
143 |
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1766127519051808768 |