Geochemistry of surface sediment samples from the South Atlantic Ocean
The aim of the present study is an evaluation of the applicability of biogenic barium as a proxy for productivity. For this purpose, 190 surface sediment samples from the South Atlantic Ocean were analysed for their barium and aluminium concentrations. Biogenic barium is estimated by subtracting the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.55094 2024-09-30T14:43:34+00:00 Geochemistry of surface sediment samples from the South Atlantic Ocean Pfeifer, Kerstin Kasten, Sabine Hensen, Christian Schulz, Horst D MEDIAN LATITUDE: -19.692404 * MEDIAN LONGITUDE: -19.341230 * SOUTH-BOUND LATITUDE: -48.386667 * WEST-BOUND LONGITUDE: -60.091667 * NORTH-BOUND LATITUDE: 7.343333 * EAST-BOUND LONGITUDE: 15.480000 * DATE/TIME START: 1988-02-24T00:00:00 * DATE/TIME END: 1996-04-01T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.003 m * MAXIMUM DEPTH, sediment/rock: 0.005 m 2001 text/tab-separated-values, 840 data points https://doi.pangaea.de/10.1594/PANGAEA.55094 https://doi.org/10.1594/PANGAEA.55094 en eng PANGAEA Pfeifer, Kerstin (1998): Rekonstruktion der Primärproduktion aus Bariumgehalten in Oberflächensedimenten des Südatlantiks. Diploma Thesis, Fachbereich Geowissenschaften, Universität Bremen, Germany Pfeifer, Kerstin (2003): Auswirkungen frühdiagenetischer Prozesse auf Calcit- und Barytgehalten in marinen Oberflächensedimenten: Modellierung von Lösung und Erhaltung. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 208, 110 pp, urn:nbn:de:gbv:46-ep000103296 https://doi.pangaea.de/10.1594/PANGAEA.55094 https://doi.org/10.1594/PANGAEA.55094 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Pfeifer, Kerstin; Kasten, Sabine; Hensen, Christian; Schulz, Horst D (2001): Reconstruction of primary productivity from the barium contents in surface sediments of the South Atlantic Ocean. Marine Geology, 177(1-2), 13-24, https://doi.org/10.1016/S0025-3227(01)00121-9 Aluminium Amazon Fan Angola Basin Argentine Basin Barium Brazil Basin Cape Basin Cardno Seamount Comment Continental slope off Brazil DEPTH sediment/rock East Brazil Basin Elevation of event Equatorial Atlantic Event label GeoB GeoB1013-2 GeoB1015-3 GeoB1018-2 GeoB1023-2 GeoB1024-3 GeoB1026-3 GeoB1031-3 GeoB1037-2 GeoB1039-1 GeoB1040-3 GeoB1041-1 GeoB1043-2 GeoB1044-3 GeoB1046-2 GeoB1101-4 GeoB1102-3 GeoB1103-3 GeoB1104-5 GeoB1105-3 GeoB1106-5 GeoB1108-3 GeoB1109-4 GeoB1110-3 GeoB1111-5 GeoB1112-3 GeoB1113-7 GeoB1114-3 GeoB1115-4 GeoB1116-1 GeoB1117-3 GeoB1118-2 GeoB1119-2 GeoB1120-3 dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.5509410.1016/S0025-3227(01)00121-9 2024-09-18T00:10:44Z The aim of the present study is an evaluation of the applicability of biogenic barium as a proxy for productivity. For this purpose, 190 surface sediment samples from the South Atlantic Ocean were analysed for their barium and aluminium concentrations. Biogenic barium is estimated by subtracting the calculated terrigenous barium (obtained from the terrigenous Ba/Al ratio and the amount of Al in the sample) from the total Ba content in the sample. Based on the accumulation rates of biogenic barium, export production is estimated using three different algorithms proposed by [Paleoceanography 7 (1992) 163, doi:10.1029/92PA00181; Global Biogeochem. Cycles 9 (1995) 289, doi:10.1029/95GB00021; Geomar. Report 38 (1995) 105]. Primary productivity was calculated from these different export productions and compared with measurements of recent primary productivity in the overlying surface waters. Only the primary productions calculated on the basis of the algorithm of [Paleoceanography 7 (1992) 163, doi:10.1029/92PA00181] yield productivity values comparable to those existing in ocean surface waters. This study further reveals that it is not sufficient to use a constant, generally applicable organic carbon/biogenic barium ratio, as is postulated by [Global Biogeochem. Cycles 9 (1995) 289, doi:10.1029/95GB00021]. This ratio has to be assessed regionally. For the sediments of the Cape Basin in the eastern South Atlantic Ocean, a new algorithm is developed which gives plausible primary productivities for the overlying surface waters. Dataset South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Argentine ENVELOPE(-60.091667,15.480000,7.343333,-48.386667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Aluminium Amazon Fan Angola Basin Argentine Basin Barium Brazil Basin Cape Basin Cardno Seamount Comment Continental slope off Brazil DEPTH sediment/rock East Brazil Basin Elevation of event Equatorial Atlantic Event label GeoB GeoB1013-2 GeoB1015-3 GeoB1018-2 GeoB1023-2 GeoB1024-3 GeoB1026-3 GeoB1031-3 GeoB1037-2 GeoB1039-1 GeoB1040-3 GeoB1041-1 GeoB1043-2 GeoB1044-3 GeoB1046-2 GeoB1101-4 GeoB1102-3 GeoB1103-3 GeoB1104-5 GeoB1105-3 GeoB1106-5 GeoB1108-3 GeoB1109-4 GeoB1110-3 GeoB1111-5 GeoB1112-3 GeoB1113-7 GeoB1114-3 GeoB1115-4 GeoB1116-1 GeoB1117-3 GeoB1118-2 GeoB1119-2 GeoB1120-3 |
spellingShingle |
Aluminium Amazon Fan Angola Basin Argentine Basin Barium Brazil Basin Cape Basin Cardno Seamount Comment Continental slope off Brazil DEPTH sediment/rock East Brazil Basin Elevation of event Equatorial Atlantic Event label GeoB GeoB1013-2 GeoB1015-3 GeoB1018-2 GeoB1023-2 GeoB1024-3 GeoB1026-3 GeoB1031-3 GeoB1037-2 GeoB1039-1 GeoB1040-3 GeoB1041-1 GeoB1043-2 GeoB1044-3 GeoB1046-2 GeoB1101-4 GeoB1102-3 GeoB1103-3 GeoB1104-5 GeoB1105-3 GeoB1106-5 GeoB1108-3 GeoB1109-4 GeoB1110-3 GeoB1111-5 GeoB1112-3 GeoB1113-7 GeoB1114-3 GeoB1115-4 GeoB1116-1 GeoB1117-3 GeoB1118-2 GeoB1119-2 GeoB1120-3 Pfeifer, Kerstin Kasten, Sabine Hensen, Christian Schulz, Horst D Geochemistry of surface sediment samples from the South Atlantic Ocean |
topic_facet |
Aluminium Amazon Fan Angola Basin Argentine Basin Barium Brazil Basin Cape Basin Cardno Seamount Comment Continental slope off Brazil DEPTH sediment/rock East Brazil Basin Elevation of event Equatorial Atlantic Event label GeoB GeoB1013-2 GeoB1015-3 GeoB1018-2 GeoB1023-2 GeoB1024-3 GeoB1026-3 GeoB1031-3 GeoB1037-2 GeoB1039-1 GeoB1040-3 GeoB1041-1 GeoB1043-2 GeoB1044-3 GeoB1046-2 GeoB1101-4 GeoB1102-3 GeoB1103-3 GeoB1104-5 GeoB1105-3 GeoB1106-5 GeoB1108-3 GeoB1109-4 GeoB1110-3 GeoB1111-5 GeoB1112-3 GeoB1113-7 GeoB1114-3 GeoB1115-4 GeoB1116-1 GeoB1117-3 GeoB1118-2 GeoB1119-2 GeoB1120-3 |
description |
The aim of the present study is an evaluation of the applicability of biogenic barium as a proxy for productivity. For this purpose, 190 surface sediment samples from the South Atlantic Ocean were analysed for their barium and aluminium concentrations. Biogenic barium is estimated by subtracting the calculated terrigenous barium (obtained from the terrigenous Ba/Al ratio and the amount of Al in the sample) from the total Ba content in the sample. Based on the accumulation rates of biogenic barium, export production is estimated using three different algorithms proposed by [Paleoceanography 7 (1992) 163, doi:10.1029/92PA00181; Global Biogeochem. Cycles 9 (1995) 289, doi:10.1029/95GB00021; Geomar. Report 38 (1995) 105]. Primary productivity was calculated from these different export productions and compared with measurements of recent primary productivity in the overlying surface waters. Only the primary productions calculated on the basis of the algorithm of [Paleoceanography 7 (1992) 163, doi:10.1029/92PA00181] yield productivity values comparable to those existing in ocean surface waters. This study further reveals that it is not sufficient to use a constant, generally applicable organic carbon/biogenic barium ratio, as is postulated by [Global Biogeochem. Cycles 9 (1995) 289, doi:10.1029/95GB00021]. This ratio has to be assessed regionally. For the sediments of the Cape Basin in the eastern South Atlantic Ocean, a new algorithm is developed which gives plausible primary productivities for the overlying surface waters. |
format |
Dataset |
author |
Pfeifer, Kerstin Kasten, Sabine Hensen, Christian Schulz, Horst D |
author_facet |
Pfeifer, Kerstin Kasten, Sabine Hensen, Christian Schulz, Horst D |
author_sort |
Pfeifer, Kerstin |
title |
Geochemistry of surface sediment samples from the South Atlantic Ocean |
title_short |
Geochemistry of surface sediment samples from the South Atlantic Ocean |
title_full |
Geochemistry of surface sediment samples from the South Atlantic Ocean |
title_fullStr |
Geochemistry of surface sediment samples from the South Atlantic Ocean |
title_full_unstemmed |
Geochemistry of surface sediment samples from the South Atlantic Ocean |
title_sort |
geochemistry of surface sediment samples from the south atlantic ocean |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.55094 https://doi.org/10.1594/PANGAEA.55094 |
op_coverage |
MEDIAN LATITUDE: -19.692404 * MEDIAN LONGITUDE: -19.341230 * SOUTH-BOUND LATITUDE: -48.386667 * WEST-BOUND LONGITUDE: -60.091667 * NORTH-BOUND LATITUDE: 7.343333 * EAST-BOUND LONGITUDE: 15.480000 * DATE/TIME START: 1988-02-24T00:00:00 * DATE/TIME END: 1996-04-01T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.003 m * MAXIMUM DEPTH, sediment/rock: 0.005 m |
long_lat |
ENVELOPE(-60.091667,15.480000,7.343333,-48.386667) |
geographic |
Argentine |
geographic_facet |
Argentine |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Pfeifer, Kerstin; Kasten, Sabine; Hensen, Christian; Schulz, Horst D (2001): Reconstruction of primary productivity from the barium contents in surface sediments of the South Atlantic Ocean. Marine Geology, 177(1-2), 13-24, https://doi.org/10.1016/S0025-3227(01)00121-9 |
op_relation |
Pfeifer, Kerstin (1998): Rekonstruktion der Primärproduktion aus Bariumgehalten in Oberflächensedimenten des Südatlantiks. Diploma Thesis, Fachbereich Geowissenschaften, Universität Bremen, Germany Pfeifer, Kerstin (2003): Auswirkungen frühdiagenetischer Prozesse auf Calcit- und Barytgehalten in marinen Oberflächensedimenten: Modellierung von Lösung und Erhaltung. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 208, 110 pp, urn:nbn:de:gbv:46-ep000103296 https://doi.pangaea.de/10.1594/PANGAEA.55094 https://doi.org/10.1594/PANGAEA.55094 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.5509410.1016/S0025-3227(01)00121-9 |
_version_ |
1811645323301355520 |