FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING
International audience Fluctuations in abundance between the two calcareous nannofossil species Coccolithus pelagicus and Reticulofenestra pseudoumbilica are observed in the upper Miocene sediments recovered from Deep Sea Drilling Project hole 552A. A record of these fluctuations (Cp/Rp) is establis...
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Language: | English |
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1990
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ftunivaixmarseil:oai:HAL:hal-01460402v1 2023-12-17T10:48:58+01:00 FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING Beaufort, Luc, L Aubry, Marie-Pierre Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 1990-12 https://hal.science/hal-01460402 https://hal.science/hal-01460402/document https://hal.science/hal-01460402/file/ark%20_67375_WNG-D1LSBNCT-5.pdf https://doi.org/10.1029/PA005i006p00845 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/PA005i006p00845 hal-01460402 https://hal.science/hal-01460402 https://hal.science/hal-01460402/document https://hal.science/hal-01460402/file/ark%20_67375_WNG-D1LSBNCT-5.pdf doi:10.1029/PA005i006p00845 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.science/hal-01460402 Paleoceanography, 1990, 5 (6), pp.845-865. ⟨10.1029/PA005i006p00845⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 1990 ftunivaixmarseil https://doi.org/10.1029/PA005i006p00845 2023-11-21T23:43:52Z International audience Fluctuations in abundance between the two calcareous nannofossil species Coccolithus pelagicus and Reticulofenestra pseudoumbilica are observed in the upper Miocene sediments recovered from Deep Sea Drilling Project hole 552A. A record of these fluctuations (Cp/Rp) is established for a time interval of similar to 1.35 m.y. (from 4.9 to 6.25 Ma) and is shown to yield periodicities which correspond to Milankovitch periodicities. A change in regime occurred at 5.72 Ma, as indicated by a shift from a series dominated by the 20-kyr cycle to a series dominated by the 100-kyr cycle. The Cp/Rp is compared with the isotopic delta O-18 and delta C-13 records from benthic and planktonic foraminifera. It is shown that a good correlation between the Cp/Rp and the isotopic records occurs only at times of major global changes. This suggests that the Cp/Rp, which reflects water masses movements, yields a complex paleoclimatic/paleoceanographic message which can help improving our understanding of the late Miocene history. Article in Journal/Newspaper Planktonic foraminifera Aix-Marseille Université: HAL Paleoceanography 5 6 845 865 |
institution |
Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Beaufort, Luc, L Aubry, Marie-Pierre FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Fluctuations in abundance between the two calcareous nannofossil species Coccolithus pelagicus and Reticulofenestra pseudoumbilica are observed in the upper Miocene sediments recovered from Deep Sea Drilling Project hole 552A. A record of these fluctuations (Cp/Rp) is established for a time interval of similar to 1.35 m.y. (from 4.9 to 6.25 Ma) and is shown to yield periodicities which correspond to Milankovitch periodicities. A change in regime occurred at 5.72 Ma, as indicated by a shift from a series dominated by the 20-kyr cycle to a series dominated by the 100-kyr cycle. The Cp/Rp is compared with the isotopic delta O-18 and delta C-13 records from benthic and planktonic foraminifera. It is shown that a good correlation between the Cp/Rp and the isotopic records occurs only at times of major global changes. This suggests that the Cp/Rp, which reflects water masses movements, yields a complex paleoclimatic/paleoceanographic message which can help improving our understanding of the late Miocene history. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Beaufort, Luc, L Aubry, Marie-Pierre |
author_facet |
Beaufort, Luc, L Aubry, Marie-Pierre |
author_sort |
Beaufort, Luc, L |
title |
FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
title_short |
FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
title_full |
FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
title_fullStr |
FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
title_full_unstemmed |
FLUCTUATIONS IN THE COMPOSITION OF LATE MIOCENE CALCAREOUS NANNOFOSSIL ASSEMBLAGES AS A RESPONSE TO ORBITAL FORCING |
title_sort |
fluctuations in the composition of late miocene calcareous nannofossil assemblages as a response to orbital forcing |
publisher |
HAL CCSD |
publishDate |
1990 |
url |
https://hal.science/hal-01460402 https://hal.science/hal-01460402/document https://hal.science/hal-01460402/file/ark%20_67375_WNG-D1LSBNCT-5.pdf https://doi.org/10.1029/PA005i006p00845 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.science/hal-01460402 Paleoceanography, 1990, 5 (6), pp.845-865. ⟨10.1029/PA005i006p00845⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/PA005i006p00845 hal-01460402 https://hal.science/hal-01460402 https://hal.science/hal-01460402/document https://hal.science/hal-01460402/file/ark%20_67375_WNG-D1LSBNCT-5.pdf doi:10.1029/PA005i006p00845 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/PA005i006p00845 |
container_title |
Paleoceanography |
container_volume |
5 |
container_issue |
6 |
container_start_page |
845 |
op_container_end_page |
865 |
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1785573290434101248 |