Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria)
International audience A multi-proxy approach integrating data on planktonic foraminifera, calcareous nannofossils, δ13Ccarb, δ18Ocarb and the coiling direction of Muricohedbergella delrioensis was carried out for two sections in the Tellian Atlas (Algeria) both to establish a precise stratigraphic...
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Online Access: | https://hal.science/hal-03716389 https://doi.org/10.1016/j.cretres.2022.105264 |
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ftmuseumnhn:oai:HAL:hal-03716389v1 2024-02-11T10:08:02+01:00 Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) Ouikene, Karima Desmares, Delphine Gardin, Silvia Benkherouf-Kechid, Fatiha Bardin, Jérémie Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene Alger (USTHB) 2022-10-01 https://hal.science/hal-03716389 https://doi.org/10.1016/j.cretres.2022.105264 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2022.105264 hal-03716389 https://hal.science/hal-03716389 doi:10.1016/j.cretres.2022.105264 ISSN: 0195-6671 EISSN: 1095-998X Cretaceous Research https://hal.science/hal-03716389 Cretaceous Research, 2022, 138, pp.105264. ⟨10.1016/j.cretres.2022.105264⟩ Cenomanian/Turonian stage boundary Oceanic Anoxic Event 2 Algeria Shell coiling direction Planktonic foraminifera Calcareous nannofossils [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2022 ftmuseumnhn https://doi.org/10.1016/j.cretres.2022.105264 2024-01-24T17:26:09Z International audience A multi-proxy approach integrating data on planktonic foraminifera, calcareous nannofossils, δ13Ccarb, δ18Ocarb and the coiling direction of Muricohedbergella delrioensis was carried out for two sections in the Tellian Atlas (Algeria) both to establish a precise stratigraphic scheme and to precise the climatic events.The Sour el Ghozlane section offers a good record of the Oceanic Anoxic Event 2 (OAE2) in the southern margin of the Tethys, with organic-rich sediments and the continuous presence of planktonic foraminifera, nannofossils and other microfossils. The Cenomanian/Turonian boundary (CTB) in the Sour el Ghozlane section lies in the interval limited at the base by the last occurrence of Helenea chiastia and the first occurrence of Quadrum gartneri respectively located immediately below and above the last peak (C) of the carbon isotope excursion. However, in the Sidi Nadji section, the CTB interval is extremely thin; the last occurrences of Rotalipora cushmani and Thalmanninella greenhornensis coincide with the last occurrences of Corollithion kennedyi, Helenea chiastia, Axopodorhabdus albianus and Rhagodiscus asper and occur in the same level, therefore a hiatus is suspected.Sour el Ghozlane and Sidi Nadji are so far the southernmost sections where the percentage of sinistral M. delrioensis has been investigated. High proportion of left-coiled morphotypes among M. delrioensis indicate transient cooling episodes, including the Plenus Cold Event at the onset of OAE2 and before the warm conditions at the CTB characterized by the dominance of dextral forms. Article in Journal/Newspaper Planktonic foraminifera Muséum National d'Histoire Naturelle (MNHM): HAL Last Peak ENVELOPE(-134.221,-134.221,61.599,61.599) Cretaceous Research 138 105264 |
institution |
Open Polar |
collection |
Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
Cenomanian/Turonian stage boundary Oceanic Anoxic Event 2 Algeria Shell coiling direction Planktonic foraminifera Calcareous nannofossils [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Cenomanian/Turonian stage boundary Oceanic Anoxic Event 2 Algeria Shell coiling direction Planktonic foraminifera Calcareous nannofossils [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Ouikene, Karima Desmares, Delphine Gardin, Silvia Benkherouf-Kechid, Fatiha Bardin, Jérémie Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
topic_facet |
Cenomanian/Turonian stage boundary Oceanic Anoxic Event 2 Algeria Shell coiling direction Planktonic foraminifera Calcareous nannofossils [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience A multi-proxy approach integrating data on planktonic foraminifera, calcareous nannofossils, δ13Ccarb, δ18Ocarb and the coiling direction of Muricohedbergella delrioensis was carried out for two sections in the Tellian Atlas (Algeria) both to establish a precise stratigraphic scheme and to precise the climatic events.The Sour el Ghozlane section offers a good record of the Oceanic Anoxic Event 2 (OAE2) in the southern margin of the Tethys, with organic-rich sediments and the continuous presence of planktonic foraminifera, nannofossils and other microfossils. The Cenomanian/Turonian boundary (CTB) in the Sour el Ghozlane section lies in the interval limited at the base by the last occurrence of Helenea chiastia and the first occurrence of Quadrum gartneri respectively located immediately below and above the last peak (C) of the carbon isotope excursion. However, in the Sidi Nadji section, the CTB interval is extremely thin; the last occurrences of Rotalipora cushmani and Thalmanninella greenhornensis coincide with the last occurrences of Corollithion kennedyi, Helenea chiastia, Axopodorhabdus albianus and Rhagodiscus asper and occur in the same level, therefore a hiatus is suspected.Sour el Ghozlane and Sidi Nadji are so far the southernmost sections where the percentage of sinistral M. delrioensis has been investigated. High proportion of left-coiled morphotypes among M. delrioensis indicate transient cooling episodes, including the Plenus Cold Event at the onset of OAE2 and before the warm conditions at the CTB characterized by the dominance of dextral forms. |
author2 |
Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene Alger (USTHB) |
format |
Article in Journal/Newspaper |
author |
Ouikene, Karima Desmares, Delphine Gardin, Silvia Benkherouf-Kechid, Fatiha Bardin, Jérémie |
author_facet |
Ouikene, Karima Desmares, Delphine Gardin, Silvia Benkherouf-Kechid, Fatiha Bardin, Jérémie |
author_sort |
Ouikene, Karima |
title |
Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
title_short |
Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
title_full |
Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
title_fullStr |
Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
title_full_unstemmed |
Biostratigraphic and chemostratigraphic record of the Cenomanian/Turonian boundary interval of the Tellian Atlas (Algeria) |
title_sort |
biostratigraphic and chemostratigraphic record of the cenomanian/turonian boundary interval of the tellian atlas (algeria) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03716389 https://doi.org/10.1016/j.cretres.2022.105264 |
long_lat |
ENVELOPE(-134.221,-134.221,61.599,61.599) |
geographic |
Last Peak |
geographic_facet |
Last Peak |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 0195-6671 EISSN: 1095-998X Cretaceous Research https://hal.science/hal-03716389 Cretaceous Research, 2022, 138, pp.105264. ⟨10.1016/j.cretres.2022.105264⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2022.105264 hal-03716389 https://hal.science/hal-03716389 doi:10.1016/j.cretres.2022.105264 |
op_doi |
https://doi.org/10.1016/j.cretres.2022.105264 |
container_title |
Cretaceous Research |
container_volume |
138 |
container_start_page |
105264 |
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1790606943709036544 |