A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records
We examined near-surface, late Holocene deep-sea sediments at nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°S) along the Southwest African continental margin. Contents, distribution patterns and molecular stable carbon isotope signatures of long-chain n-alkanes...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.776480 2023-05-15T18:21:21+02:00 A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records Rommerskirchen, Florian Eglinton, Geoffrey Dupont, Lydie M Güntner, Ute Wenzel, Claudia Rullkötter, Jürgen MEDIAN LATITUDE: -16.417234 * MEDIAN LONGITUDE: 11.211792 * SOUTH-BOUND LATITUDE: -29.450000 * WEST-BOUND LONGITUDE: 9.185833 * NORTH-BOUND LATITUDE: -4.785300 * EAST-BOUND LONGITUDE: 13.309050 * DATE/TIME START: 1988-02-21T00:00:00 * DATE/TIME END: 1997-09-24T03:15:00 2003-02-22 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.776480 https://doi.org/10.1594/PANGAEA.776480 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.776480 https://doi.org/10.1594/PANGAEA.776480 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rommerskirchen, Florian; Eglinton, Geoffrey; Dupont, Lydie M; Güntner, Ute; Wenzel, Claudia; Rullkötter, Jürgen (2003): A north to south transect of Holocene southeast Atlantic continental margin sediments: Relationship between aerosol transport and compound-specific d13C land plant biomarker and pollen records. Geochemistry, Geophysics, Geosystems, 4(12), 1101, https://doi.org/10.1029/2003GC000541 175-1075A 175-1079A 175-1082A 175-1084A Angola Basin Benguela Current South Atlantic Ocean DRILL Drilling/drill rig GeoB GeoB1008-3 GeoB1016-3 GeoB1028-5 GeoB1710-3 GeoB1722-1 Geosciences University of Bremen Gravity corer (Kiel type) Joides Resolution Leg175 M20/2 M6/6 Meteor (1986) Namibia continental slope Ocean Drilling Program ODP SL Walvis Ridge Southeast Atlantic Ocean Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.776480 https://doi.org/10.1029/2003GC000541 2023-01-20T07:32:25Z We examined near-surface, late Holocene deep-sea sediments at nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°S) along the Southwest African continental margin. Contents, distribution patterns and molecular stable carbon isotope signatures of long-chain n-alkanes (C27-C33) and n-alkanols (C22-C32) are indicators of land plant vegetation of different biosynthetic types, which can be correlated with concentrations and distributions of pollen taxa in the same sediments. Calculated clusters of wind trajectories and satellite Aerosol Index imagery afford information on the source areas for the lipids and pollen on land and their transport pathways to the ocean sites. This multidisciplinary approach on an almost continental scale provides clear evidence of latitudinal differences in lipid and pollen composition paralleling the major phytogeographic zonations on the adjacent continent. Dust and smoke aerosols are mainly derived from the western and central South African hinterland dominated by deserts, semi-deserts and savannah regions rich in C4 and CAM plants. The northern sites (Congo Fan area and northern Angola Basin), which get most of their terrestrial material from the Congo Basin and the Angolan highlands, may also receive some material from the Chad region. Very little aerosol from the African continent is transported to the most southerly sites in the Cape Basin. As can be expected from the present position of the phytogeographic zones, the carbon isotopic signatures of the n-alkanes and n-alkanols both become isotopically more enriched in 13C from north to south. The results of the study suggest that this combination of pollen data and compound-specific isotope geochemical proxies can be effectively applied in the reconstruction of past continental phytogeographic developments. Dataset South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(9.185833,13.309050,-4.785300,-29.450000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1075A 175-1079A 175-1082A 175-1084A Angola Basin Benguela Current South Atlantic Ocean DRILL Drilling/drill rig GeoB GeoB1008-3 GeoB1016-3 GeoB1028-5 GeoB1710-3 GeoB1722-1 Geosciences University of Bremen Gravity corer (Kiel type) Joides Resolution Leg175 M20/2 M6/6 Meteor (1986) Namibia continental slope Ocean Drilling Program ODP SL Walvis Ridge Southeast Atlantic Ocean |
spellingShingle |
175-1075A 175-1079A 175-1082A 175-1084A Angola Basin Benguela Current South Atlantic Ocean DRILL Drilling/drill rig GeoB GeoB1008-3 GeoB1016-3 GeoB1028-5 GeoB1710-3 GeoB1722-1 Geosciences University of Bremen Gravity corer (Kiel type) Joides Resolution Leg175 M20/2 M6/6 Meteor (1986) Namibia continental slope Ocean Drilling Program ODP SL Walvis Ridge Southeast Atlantic Ocean Rommerskirchen, Florian Eglinton, Geoffrey Dupont, Lydie M Güntner, Ute Wenzel, Claudia Rullkötter, Jürgen A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
topic_facet |
175-1075A 175-1079A 175-1082A 175-1084A Angola Basin Benguela Current South Atlantic Ocean DRILL Drilling/drill rig GeoB GeoB1008-3 GeoB1016-3 GeoB1028-5 GeoB1710-3 GeoB1722-1 Geosciences University of Bremen Gravity corer (Kiel type) Joides Resolution Leg175 M20/2 M6/6 Meteor (1986) Namibia continental slope Ocean Drilling Program ODP SL Walvis Ridge Southeast Atlantic Ocean |
description |
We examined near-surface, late Holocene deep-sea sediments at nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°S) along the Southwest African continental margin. Contents, distribution patterns and molecular stable carbon isotope signatures of long-chain n-alkanes (C27-C33) and n-alkanols (C22-C32) are indicators of land plant vegetation of different biosynthetic types, which can be correlated with concentrations and distributions of pollen taxa in the same sediments. Calculated clusters of wind trajectories and satellite Aerosol Index imagery afford information on the source areas for the lipids and pollen on land and their transport pathways to the ocean sites. This multidisciplinary approach on an almost continental scale provides clear evidence of latitudinal differences in lipid and pollen composition paralleling the major phytogeographic zonations on the adjacent continent. Dust and smoke aerosols are mainly derived from the western and central South African hinterland dominated by deserts, semi-deserts and savannah regions rich in C4 and CAM plants. The northern sites (Congo Fan area and northern Angola Basin), which get most of their terrestrial material from the Congo Basin and the Angolan highlands, may also receive some material from the Chad region. Very little aerosol from the African continent is transported to the most southerly sites in the Cape Basin. As can be expected from the present position of the phytogeographic zones, the carbon isotopic signatures of the n-alkanes and n-alkanols both become isotopically more enriched in 13C from north to south. The results of the study suggest that this combination of pollen data and compound-specific isotope geochemical proxies can be effectively applied in the reconstruction of past continental phytogeographic developments. |
format |
Dataset |
author |
Rommerskirchen, Florian Eglinton, Geoffrey Dupont, Lydie M Güntner, Ute Wenzel, Claudia Rullkötter, Jürgen |
author_facet |
Rommerskirchen, Florian Eglinton, Geoffrey Dupont, Lydie M Güntner, Ute Wenzel, Claudia Rullkötter, Jürgen |
author_sort |
Rommerskirchen, Florian |
title |
A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
title_short |
A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
title_full |
A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
title_fullStr |
A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
title_full_unstemmed |
A relationship between aerosol transport and compound-specific δ¹³C land plant biomarker and pollen records |
title_sort |
relationship between aerosol transport and compound-specific δ¹³c land plant biomarker and pollen records |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.776480 https://doi.org/10.1594/PANGAEA.776480 |
op_coverage |
MEDIAN LATITUDE: -16.417234 * MEDIAN LONGITUDE: 11.211792 * SOUTH-BOUND LATITUDE: -29.450000 * WEST-BOUND LONGITUDE: 9.185833 * NORTH-BOUND LATITUDE: -4.785300 * EAST-BOUND LONGITUDE: 13.309050 * DATE/TIME START: 1988-02-21T00:00:00 * DATE/TIME END: 1997-09-24T03:15:00 |
long_lat |
ENVELOPE(9.185833,13.309050,-4.785300,-29.450000) |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Rommerskirchen, Florian; Eglinton, Geoffrey; Dupont, Lydie M; Güntner, Ute; Wenzel, Claudia; Rullkötter, Jürgen (2003): A north to south transect of Holocene southeast Atlantic continental margin sediments: Relationship between aerosol transport and compound-specific d13C land plant biomarker and pollen records. Geochemistry, Geophysics, Geosystems, 4(12), 1101, https://doi.org/10.1029/2003GC000541 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.776480 https://doi.org/10.1594/PANGAEA.776480 |
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.776480 https://doi.org/10.1029/2003GC000541 |
_version_ |
1766200565566537728 |