Sediment accumulation rates of sediment cores from the North-West African continental margin
Six soft sediment cores, up to and over 9 m in length, and additional surface samples were selected for study of their planktonic foraminifera to provide information on the Holocene and Pleistocene stratigraphy of the West African continental margin south of the present boundary of the Sahara. The m...
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1975
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.548427 2023-05-15T16:30:36+02:00 Sediment accumulation rates of sediment cores from the North-West African continental margin Pflaumann, Uwe MEDIAN LATITUDE: 15.582778 * MEDIAN LONGITUDE: -17.509444 * SOUTH-BOUND LATITUDE: 15.443333 * WEST-BOUND LONGITUDE: -17.861667 * NORTH-BOUND LATITUDE: 15.825000 * EAST-BOUND LONGITUDE: -17.306667 * DATE/TIME START: 1971-01-01T00:00:00 * DATE/TIME END: 1971-11-17T00:00:00 1975-11-14 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.548427 https://doi.org/10.1594/PANGAEA.548427 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.548427 https://doi.org/10.1594/PANGAEA.548427 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Pflaumann, Uwe (1975): Late Quaternary stratigraphy based on planktonic foraminifera off Senegal. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C23, 1-46 East Atlantic GIK/IfG GIK12344-6 GIK12345-5 GIK12347-2 Institute for Geosciences Christian Albrechts University Kiel KAL Kasten corer M25 Meteor (1964) Dataset 1975 ftpangaea https://doi.org/10.1594/PANGAEA.548427 2023-01-20T07:31:00Z Six soft sediment cores, up to and over 9 m in length, and additional surface samples were selected for study of their planktonic foraminifera to provide information on the Holocene and Pleistocene stratigraphy of the West African continental margin south of the present boundary of the Sahara. The material was collected by the German research vessel "Meteor" during Cruise 25 in 1971. The residues larger than 160 microns determined, counted and statistically evaluated. Stratigraphical correlations with trans- Antlantic regions are given by occurrence of Truncorotalidoides hexagonus and Globorotalia tumidula flexuosa which mark the last interglacial stage. According to the climatic record the two deep-sea cores extend down to the V-zone, considered here as equivalent to the Mindel-Riss-interglacial time, as there are three distinctly warm and two cold periods indicated in the cores by planktonic foraminiferal faunas. Z-zone = Holocene is present in all cores, Y-zone = Wuermian glacial can be divided into five section, three cold and two warm stages; the X-zone can be divided into three warm stages, separated into two cool periods. The earliest warm stage is indicated to be the warmest one. There are excellent correlations to the Camp century ice core from Greenland, to the Mediterranean, to the Carribean and to the tropical Atlantic as well as to the Barnados stage. The W-zone was correlated to the Riss-glacial. V-zone is a warm period, the upper limit of which being not sufficiently defined, which contains also some cool sections. Increasing sedimentation rates from the deep-sea to the upper slope reveal climatic and regional details in Holocene and Late Pleistocene history of the continental margin. These were based mainly on different parameters of planktonic foraminiferal thanatocoenoses which are the main components of the size fraction >160 microns of the pelagic core. They become incerasingly diluted by other faunal and terrigenous components with decreasing slope depths. Estimates of absolute ... Dataset Greenland ice core Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-17.861667,-17.306667,15.825000,15.443333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
East Atlantic GIK/IfG GIK12344-6 GIK12345-5 GIK12347-2 Institute for Geosciences Christian Albrechts University Kiel KAL Kasten corer M25 Meteor (1964) |
spellingShingle |
East Atlantic GIK/IfG GIK12344-6 GIK12345-5 GIK12347-2 Institute for Geosciences Christian Albrechts University Kiel KAL Kasten corer M25 Meteor (1964) Pflaumann, Uwe Sediment accumulation rates of sediment cores from the North-West African continental margin |
topic_facet |
East Atlantic GIK/IfG GIK12344-6 GIK12345-5 GIK12347-2 Institute for Geosciences Christian Albrechts University Kiel KAL Kasten corer M25 Meteor (1964) |
description |
Six soft sediment cores, up to and over 9 m in length, and additional surface samples were selected for study of their planktonic foraminifera to provide information on the Holocene and Pleistocene stratigraphy of the West African continental margin south of the present boundary of the Sahara. The material was collected by the German research vessel "Meteor" during Cruise 25 in 1971. The residues larger than 160 microns determined, counted and statistically evaluated. Stratigraphical correlations with trans- Antlantic regions are given by occurrence of Truncorotalidoides hexagonus and Globorotalia tumidula flexuosa which mark the last interglacial stage. According to the climatic record the two deep-sea cores extend down to the V-zone, considered here as equivalent to the Mindel-Riss-interglacial time, as there are three distinctly warm and two cold periods indicated in the cores by planktonic foraminiferal faunas. Z-zone = Holocene is present in all cores, Y-zone = Wuermian glacial can be divided into five section, three cold and two warm stages; the X-zone can be divided into three warm stages, separated into two cool periods. The earliest warm stage is indicated to be the warmest one. There are excellent correlations to the Camp century ice core from Greenland, to the Mediterranean, to the Carribean and to the tropical Atlantic as well as to the Barnados stage. The W-zone was correlated to the Riss-glacial. V-zone is a warm period, the upper limit of which being not sufficiently defined, which contains also some cool sections. Increasing sedimentation rates from the deep-sea to the upper slope reveal climatic and regional details in Holocene and Late Pleistocene history of the continental margin. These were based mainly on different parameters of planktonic foraminiferal thanatocoenoses which are the main components of the size fraction >160 microns of the pelagic core. They become incerasingly diluted by other faunal and terrigenous components with decreasing slope depths. Estimates of absolute ... |
format |
Dataset |
author |
Pflaumann, Uwe |
author_facet |
Pflaumann, Uwe |
author_sort |
Pflaumann, Uwe |
title |
Sediment accumulation rates of sediment cores from the North-West African continental margin |
title_short |
Sediment accumulation rates of sediment cores from the North-West African continental margin |
title_full |
Sediment accumulation rates of sediment cores from the North-West African continental margin |
title_fullStr |
Sediment accumulation rates of sediment cores from the North-West African continental margin |
title_full_unstemmed |
Sediment accumulation rates of sediment cores from the North-West African continental margin |
title_sort |
sediment accumulation rates of sediment cores from the north-west african continental margin |
publisher |
PANGAEA |
publishDate |
1975 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.548427 https://doi.org/10.1594/PANGAEA.548427 |
op_coverage |
MEDIAN LATITUDE: 15.582778 * MEDIAN LONGITUDE: -17.509444 * SOUTH-BOUND LATITUDE: 15.443333 * WEST-BOUND LONGITUDE: -17.861667 * NORTH-BOUND LATITUDE: 15.825000 * EAST-BOUND LONGITUDE: -17.306667 * DATE/TIME START: 1971-01-01T00:00:00 * DATE/TIME END: 1971-11-17T00:00:00 |
long_lat |
ENVELOPE(-17.861667,-17.306667,15.825000,15.443333) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core Planktonic foraminifera |
genre_facet |
Greenland ice core Planktonic foraminifera |
op_source |
Supplement to: Pflaumann, Uwe (1975): Late Quaternary stratigraphy based on planktonic foraminifera off Senegal. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C23, 1-46 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.548427 https://doi.org/10.1594/PANGAEA.548427 |
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.548427 |
_version_ |
1766020329443950592 |