Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf
Within the wave-dominated and high-energy depositional environment of the hyper-arid Namibian coast, lagoons and related saltpans represent one of the few regional settings in which sediments originating from both marine and terrestrial sources can accumulate under sheltered conditions. This allows...
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Online Access: | https://doi.org/10.3389/feart.2022.898843.s002 https://figshare.com/articles/dataset/Table2_Sedimentary_evolution_of_lagoons_along_the_Namibian_coast_reveals_fluctuation_in_Holocene_biogeographic_faunal_provinces_upwelling_intensity_and_sea_level_pdf/21776378 |
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ftfrontimediafig:oai:figshare.com:article/21776378 2024-09-15T18:36:31+00:00 Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf Irka Schüller Lukas Belz Heinz Wilkes Achim Wehrmann 2022-12-23T10:18:54Z https://doi.org/10.3389/feart.2022.898843.s002 https://figshare.com/articles/dataset/Table2_Sedimentary_evolution_of_lagoons_along_the_Namibian_coast_reveals_fluctuation_in_Holocene_biogeographic_faunal_provinces_upwelling_intensity_and_sea_level_pdf/21776378 unknown doi:10.3389/feart.2022.898843.s002 https://figshare.com/articles/dataset/Table2_Sedimentary_evolution_of_lagoons_along_the_Namibian_coast_reveals_fluctuation_in_Holocene_biogeographic_faunal_provinces_upwelling_intensity_and_sea_level_pdf/21776378 CC BY 4.0 Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change coastal pans macrobenthos palaeoenvironment longshore currents Benguela Quaternary South Atlantic Ocean Dataset 2022 ftfrontimediafig https://doi.org/10.3389/feart.2022.898843.s002 2024-08-19T06:20:00Z Within the wave-dominated and high-energy depositional environment of the hyper-arid Namibian coast, lagoons and related saltpans represent one of the few regional settings in which sediments originating from both marine and terrestrial sources can accumulate under sheltered conditions. This allows for an approximately continuous depositional record of mid to late Holocene coastal evolution. For this paleoenvironmental reconstruction, 26 sediment cores from six coastal (paleo-)lagoons were taken and investigated along a 430 km-long latitudinal gradient. Based on 56 age determinations of sediments and shell material, the initial formation of the studied lagoons can be dated back to 6.0–5.3 cal kyr BP. The sediment cores present different types of lithoclastic sediments which can be assigned to five sedimentary facies ranging from sand spit sediments rich in shell material to eolian dune sands and evaporites. From these cores, 221 samples of macrobenthic faunal material have been collected and determined to possess 46 shallow marine species. Biogeographic analyses have resulted in the identification of 10 (sub-)tropical warm water species that are not part of the regional benthic fauna in the present upwelling system. Age determinations of the shell material revealed four phases of biogeographic range expansion/shift into the study area, at 5.3 cal kyr BP, 2.8 cal kyr BP, 1.2–0.9 cal kyr BP, and 0.36–0.12 cal kyr BP from both the northern tropical Angola Current as well as from the southern subtropical Agulhas Current. The combination of datasets from this study with published datasets of regional sea-level fluctuations and upwelling intensities presents an apparent correlation between both processes and presumably an additional linkage to the ENSO and Benguela Niño variability. Dataset South Atlantic Ocean Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change coastal pans macrobenthos palaeoenvironment longshore currents Benguela Quaternary South Atlantic Ocean |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change coastal pans macrobenthos palaeoenvironment longshore currents Benguela Quaternary South Atlantic Ocean Irka Schüller Lukas Belz Heinz Wilkes Achim Wehrmann Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change coastal pans macrobenthos palaeoenvironment longshore currents Benguela Quaternary South Atlantic Ocean |
description |
Within the wave-dominated and high-energy depositional environment of the hyper-arid Namibian coast, lagoons and related saltpans represent one of the few regional settings in which sediments originating from both marine and terrestrial sources can accumulate under sheltered conditions. This allows for an approximately continuous depositional record of mid to late Holocene coastal evolution. For this paleoenvironmental reconstruction, 26 sediment cores from six coastal (paleo-)lagoons were taken and investigated along a 430 km-long latitudinal gradient. Based on 56 age determinations of sediments and shell material, the initial formation of the studied lagoons can be dated back to 6.0–5.3 cal kyr BP. The sediment cores present different types of lithoclastic sediments which can be assigned to five sedimentary facies ranging from sand spit sediments rich in shell material to eolian dune sands and evaporites. From these cores, 221 samples of macrobenthic faunal material have been collected and determined to possess 46 shallow marine species. Biogeographic analyses have resulted in the identification of 10 (sub-)tropical warm water species that are not part of the regional benthic fauna in the present upwelling system. Age determinations of the shell material revealed four phases of biogeographic range expansion/shift into the study area, at 5.3 cal kyr BP, 2.8 cal kyr BP, 1.2–0.9 cal kyr BP, and 0.36–0.12 cal kyr BP from both the northern tropical Angola Current as well as from the southern subtropical Agulhas Current. The combination of datasets from this study with published datasets of regional sea-level fluctuations and upwelling intensities presents an apparent correlation between both processes and presumably an additional linkage to the ENSO and Benguela Niño variability. |
format |
Dataset |
author |
Irka Schüller Lukas Belz Heinz Wilkes Achim Wehrmann |
author_facet |
Irka Schüller Lukas Belz Heinz Wilkes Achim Wehrmann |
author_sort |
Irka Schüller |
title |
Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
title_short |
Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
title_full |
Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
title_fullStr |
Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
title_full_unstemmed |
Table2_Sedimentary evolution of lagoons along the Namibian coast reveals fluctuation in Holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
title_sort |
table2_sedimentary evolution of lagoons along the namibian coast reveals fluctuation in holocene biogeographic faunal provinces, upwelling intensity and sea level.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.898843.s002 https://figshare.com/articles/dataset/Table2_Sedimentary_evolution_of_lagoons_along_the_Namibian_coast_reveals_fluctuation_in_Holocene_biogeographic_faunal_provinces_upwelling_intensity_and_sea_level_pdf/21776378 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
doi:10.3389/feart.2022.898843.s002 https://figshare.com/articles/dataset/Table2_Sedimentary_evolution_of_lagoons_along_the_Namibian_coast_reveals_fluctuation_in_Holocene_biogeographic_faunal_provinces_upwelling_intensity_and_sea_level_pdf/21776378 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/feart.2022.898843.s002 |
_version_ |
1810480189860216832 |