Recent benthic foraminifera of the Scotia Sea and Argentine Basin
We investigated 88 surface sediment samples taken with a multiple corer from the southwestern South Atlantic Ocean for their live (Rose Bengal stained) and dead benthic foraminiferal content. Using Q-Mode Principal Component Analysis six live and six dead associations are differentiated. Live and de...
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.729697 https://doi.org/10.1594/PANGAEA.729697 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729697 2023-05-15T13:42:09+02:00 Recent benthic foraminifera of the Scotia Sea and Argentine Basin Harloff, Joachim Mackensen, Andreas MEDIAN LATITUDE: -49.856170 * MEDIAN LONGITUDE: -39.756531 * SOUTH-BOUND LATITUDE: -60.772667 * WEST-BOUND LONGITUDE: -61.580000 * NORTH-BOUND LATITUDE: -37.806667 * EAST-BOUND LONGITUDE: -14.228333 * DATE/TIME START: 1992-08-09T01:41:00 * DATE/TIME END: 1994-07-11T00:00:00 1997-11-30 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.729697 https://doi.org/10.1594/PANGAEA.729697 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.729697 https://doi.org/10.1594/PANGAEA.729697 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Harloff, Joachim; Mackensen, Andreas (1997): Recent benthic foraminiferal associations and ecology of the Scotia Sea and Argentine Basin. Marine Micropaleontology, 31(1-2), 1-29, https://doi.org/10.1016/S0377-8398(96)00059-X ANT-X/5 ANT-XI/2 AWI_Paleo Falkland Islands GeoB2701-4 GeoB2703-7 GeoB2704-1 GeoB2705-7 GeoB2706-6 GeoB2707-4 GeoB2708-5 GeoB2709-7 GeoB2711-2 GeoB2712-1 GeoB2714-5 GeoB2715-1 GeoB2717-8 GeoB2718-1 GeoB2719-2 GeoB2722-2 GeoB2723-2 GeoB2724-7 GeoB2725-2 GeoB2726-3 GeoB2727-1 GeoB2729-1 GeoB2730-1 GeoB2731-1 GeoB2734-2 Islas Orcadas M29/1 Meteor (1986) MIC MiniCorer MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS22/280 PS22/678 PS22/679 PS22/690 PS22/712 PS22/721 PS22/744 PS22/747 PS22/748 PS22/751 PS22/755 PS22/758 Dataset 1997 ftpangaea https://doi.org/10.1594/PANGAEA.729697 https://doi.org/10.1016/S0377-8398(96)00059-X 2023-01-20T07:31:35Z We investigated 88 surface sediment samples taken with a multiple corer from the southwestern South Atlantic Ocean for their live (Rose Bengal stained) and dead benthic foraminiferal content. Using Q-Mode Principal Component Analysis six live and six dead associations are differentiated. Live and dead association distributions correspond fairly well; differences are mainly caused by downslope transport and selective test destruction. In addition, four potential fossil associations are calculated from the dead data set after removal of non-fossilizable species. These potential fossil associations are expected to be useful for paleoceanographic reconstructions. Environments are described in detail for the live and potential fossil associations and for selected species. Along the upper Argentine continental slope strong bottom currents control the occurrence of live, dead and potential fossil Angulogerina angulosa associations. Here, particles of a high organic carbon flux rate remain suspended. Below this high energy environment live, dead and potential fossil Uvigerina peregrina dominated associations correlate with enhanced sediment organic carbon content and still high organic carbon flux rates. The live A. angulosa and U. peregrina associations correlate with high standing crops. Furthermore, live and dead Epistominella exigua-Nuttallides umbonifer associations were separated. Dominance of a Nuttallides umbonifer potential fossil association relates to coverage by Antarctic Bottom Water (AABW) and Lower Circumpolar Deep Water (LCDW), above the Calcite Compensation Depth (CCD). Three associations of mainly agglutinated foraminifera occur in sediments bathed mainly by AABW or CDW. A Reophax difflugiformis association was found in mud-rich and diatomaceous sediments. Below the CCD, a Psammosphaera fusca association occurs in coarse sediments poor in organic carbon while a Cribrostomoides subglobosus-Ammobaculites agglutinans association covers a more variable environmental range with mud contents exceeding 30%. ... Dataset Antarc* Antarctic Scotia Sea South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Argentine Orcadas ENVELOPE(-44.717,-44.717,-60.750,-60.750) Scotia Sea ENVELOPE(-61.580000,-14.228333,-37.806667,-60.772667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-X/5 ANT-XI/2 AWI_Paleo Falkland Islands GeoB2701-4 GeoB2703-7 GeoB2704-1 GeoB2705-7 GeoB2706-6 GeoB2707-4 GeoB2708-5 GeoB2709-7 GeoB2711-2 GeoB2712-1 GeoB2714-5 GeoB2715-1 GeoB2717-8 GeoB2718-1 GeoB2719-2 GeoB2722-2 GeoB2723-2 GeoB2724-7 GeoB2725-2 GeoB2726-3 GeoB2727-1 GeoB2729-1 GeoB2730-1 GeoB2731-1 GeoB2734-2 Islas Orcadas M29/1 Meteor (1986) MIC MiniCorer MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS22/280 PS22/678 PS22/679 PS22/690 PS22/712 PS22/721 PS22/744 PS22/747 PS22/748 PS22/751 PS22/755 PS22/758 |
spellingShingle |
ANT-X/5 ANT-XI/2 AWI_Paleo Falkland Islands GeoB2701-4 GeoB2703-7 GeoB2704-1 GeoB2705-7 GeoB2706-6 GeoB2707-4 GeoB2708-5 GeoB2709-7 GeoB2711-2 GeoB2712-1 GeoB2714-5 GeoB2715-1 GeoB2717-8 GeoB2718-1 GeoB2719-2 GeoB2722-2 GeoB2723-2 GeoB2724-7 GeoB2725-2 GeoB2726-3 GeoB2727-1 GeoB2729-1 GeoB2730-1 GeoB2731-1 GeoB2734-2 Islas Orcadas M29/1 Meteor (1986) MIC MiniCorer MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS22/280 PS22/678 PS22/679 PS22/690 PS22/712 PS22/721 PS22/744 PS22/747 PS22/748 PS22/751 PS22/755 PS22/758 Harloff, Joachim Mackensen, Andreas Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
topic_facet |
ANT-X/5 ANT-XI/2 AWI_Paleo Falkland Islands GeoB2701-4 GeoB2703-7 GeoB2704-1 GeoB2705-7 GeoB2706-6 GeoB2707-4 GeoB2708-5 GeoB2709-7 GeoB2711-2 GeoB2712-1 GeoB2714-5 GeoB2715-1 GeoB2717-8 GeoB2718-1 GeoB2719-2 GeoB2722-2 GeoB2723-2 GeoB2724-7 GeoB2725-2 GeoB2726-3 GeoB2727-1 GeoB2729-1 GeoB2730-1 GeoB2731-1 GeoB2734-2 Islas Orcadas M29/1 Meteor (1986) MIC MiniCorer MUC MultiCorer Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS22/280 PS22/678 PS22/679 PS22/690 PS22/712 PS22/721 PS22/744 PS22/747 PS22/748 PS22/751 PS22/755 PS22/758 |
description |
We investigated 88 surface sediment samples taken with a multiple corer from the southwestern South Atlantic Ocean for their live (Rose Bengal stained) and dead benthic foraminiferal content. Using Q-Mode Principal Component Analysis six live and six dead associations are differentiated. Live and dead association distributions correspond fairly well; differences are mainly caused by downslope transport and selective test destruction. In addition, four potential fossil associations are calculated from the dead data set after removal of non-fossilizable species. These potential fossil associations are expected to be useful for paleoceanographic reconstructions. Environments are described in detail for the live and potential fossil associations and for selected species. Along the upper Argentine continental slope strong bottom currents control the occurrence of live, dead and potential fossil Angulogerina angulosa associations. Here, particles of a high organic carbon flux rate remain suspended. Below this high energy environment live, dead and potential fossil Uvigerina peregrina dominated associations correlate with enhanced sediment organic carbon content and still high organic carbon flux rates. The live A. angulosa and U. peregrina associations correlate with high standing crops. Furthermore, live and dead Epistominella exigua-Nuttallides umbonifer associations were separated. Dominance of a Nuttallides umbonifer potential fossil association relates to coverage by Antarctic Bottom Water (AABW) and Lower Circumpolar Deep Water (LCDW), above the Calcite Compensation Depth (CCD). Three associations of mainly agglutinated foraminifera occur in sediments bathed mainly by AABW or CDW. A Reophax difflugiformis association was found in mud-rich and diatomaceous sediments. Below the CCD, a Psammosphaera fusca association occurs in coarse sediments poor in organic carbon while a Cribrostomoides subglobosus-Ammobaculites agglutinans association covers a more variable environmental range with mud contents exceeding 30%. ... |
format |
Dataset |
author |
Harloff, Joachim Mackensen, Andreas |
author_facet |
Harloff, Joachim Mackensen, Andreas |
author_sort |
Harloff, Joachim |
title |
Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
title_short |
Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
title_full |
Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
title_fullStr |
Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
title_full_unstemmed |
Recent benthic foraminifera of the Scotia Sea and Argentine Basin |
title_sort |
recent benthic foraminifera of the scotia sea and argentine basin |
publisher |
PANGAEA |
publishDate |
1997 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.729697 https://doi.org/10.1594/PANGAEA.729697 |
op_coverage |
MEDIAN LATITUDE: -49.856170 * MEDIAN LONGITUDE: -39.756531 * SOUTH-BOUND LATITUDE: -60.772667 * WEST-BOUND LONGITUDE: -61.580000 * NORTH-BOUND LATITUDE: -37.806667 * EAST-BOUND LONGITUDE: -14.228333 * DATE/TIME START: 1992-08-09T01:41:00 * DATE/TIME END: 1994-07-11T00:00:00 |
long_lat |
ENVELOPE(-44.717,-44.717,-60.750,-60.750) ENVELOPE(-61.580000,-14.228333,-37.806667,-60.772667) |
geographic |
Antarctic Argentine Orcadas Scotia Sea |
geographic_facet |
Antarctic Argentine Orcadas Scotia Sea |
genre |
Antarc* Antarctic Scotia Sea South Atlantic Ocean |
genre_facet |
Antarc* Antarctic Scotia Sea South Atlantic Ocean |
op_source |
Supplement to: Harloff, Joachim; Mackensen, Andreas (1997): Recent benthic foraminiferal associations and ecology of the Scotia Sea and Argentine Basin. Marine Micropaleontology, 31(1-2), 1-29, https://doi.org/10.1016/S0377-8398(96)00059-X |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.729697 https://doi.org/10.1594/PANGAEA.729697 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.729697 https://doi.org/10.1016/S0377-8398(96)00059-X |
_version_ |
1766163627572723712 |