The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon)
Understanding the age of geological formations is essential to reconstruct Earth’s history. Nevertheless, dating Proterozoic formations is a real challenge because they are often impacted by tectonic, magmatic or metamorphic phenomena. The sedimentary sequences of the Francevillian Basin are well pr...
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| Language: | English |
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Académie des sciences
2024-06-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.264/ |
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| author | Ikouanga, Julie Ngwal’ghoubou Reisberg, Laurie Pierson-Wickmann, Anne-Catherine El Khoury, Anna Fontaine, Claude El Albani, Abderrazak |
| author_facet | Ikouanga, Julie Ngwal’ghoubou Reisberg, Laurie Pierson-Wickmann, Anne-Catherine El Khoury, Anna Fontaine, Claude El Albani, Abderrazak |
| author_sort | Ikouanga, Julie Ngwal’ghoubou |
| collection | DOAJ |
| description | Understanding the age of geological formations is essential to reconstruct Earth’s history. Nevertheless, dating Proterozoic formations is a real challenge because they are often impacted by tectonic, magmatic or metamorphic phenomena. The sedimentary sequences of the Francevillian Basin are well preserved and have been dated previously using many methods (U–Pb, Ar–Ar, Rb–Sr, ...). Here, we applied the Re–Os dating method for the first time, specifically on the “FB” and “FD” formations containing a high organic matter (OM) content (up to10%). The age obtained, 2103 ${\pm }$ 11 Ma, is coherent with the previous studies. This data confirms the unusual quality of OM preservation and the chronology of the emergence of multicellular life occurring during the Lomagundi event. |
| format | Article |
| id | doaj-art-46b2a7c02232474882b85badcde8f4f4 |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-46b2a7c02232474882b85badcde8f4f42025-02-07T10:41:12ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252024-06-01356G1576610.5802/crgeos.26410.5802/crgeos.264The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon)Ikouanga, Julie Ngwal’ghoubou0Reisberg, Laurie1https://orcid.org/0000-0002-9551-7752 Pierson-Wickmann, Anne-Catherine2https://orcid.org/0000-0002-7715-3772El Khoury, Anna3https://orcid.org/0009-0003-7323-6049Fontaine, Claude4https://orcid.org/0000-0001-5686-6725El Albani, Abderrazak5https://orcid.org/0000-0001-9598-955XUniversity of Poitiers, UMR 7285 CNRS, IC2MP, F-86073, Poitiers Cedex 9, FranceCentre de Recherches Pétrographiques et Géochimiques, UMR 7358 CNRS - Université de Lorraine, F-54500 Vandoeuvre-lès-Nancy, FranceUniversity of Rennes, CNRS, Géosciences Rennes - UMR 6118, F-35000 Rennes, FranceNanoscopium Beamline, Synchrotron Soleil, 91192 Gif-sur-Yvette, France; University of Poitiers, UMR 7285 CNRS, IC2MP, F-86073, Poitiers Cedex 9, FranceUniversity of Poitiers, UMR 7285 CNRS, IC2MP, F-86073, Poitiers Cedex 9, FranceUniversity of Poitiers, UMR 7285 CNRS, IC2MP, F-86073, Poitiers Cedex 9, FranceUnderstanding the age of geological formations is essential to reconstruct Earth’s history. Nevertheless, dating Proterozoic formations is a real challenge because they are often impacted by tectonic, magmatic or metamorphic phenomena. The sedimentary sequences of the Francevillian Basin are well preserved and have been dated previously using many methods (U–Pb, Ar–Ar, Rb–Sr, ...). Here, we applied the Re–Os dating method for the first time, specifically on the “FB” and “FD” formations containing a high organic matter (OM) content (up to10%). The age obtained, 2103 ${\pm }$ 11 Ma, is coherent with the previous studies. This data confirms the unusual quality of OM preservation and the chronology of the emergence of multicellular life occurring during the Lomagundi event.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.264/DatingRe–OsFrancevillianPaleoproterozoicGabon |
| spellingShingle | Ikouanga, Julie Ngwal’ghoubou Reisberg, Laurie Pierson-Wickmann, Anne-Catherine El Khoury, Anna Fontaine, Claude El Albani, Abderrazak The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) Comptes Rendus. Géoscience Dating Re–Os Francevillian Paleoproterozoic Gabon |
| title | The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) |
| title_full | The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) |
| title_fullStr | The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) |
| title_full_unstemmed | The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) |
| title_short | The first application of Re–Os dating on Paleoproterozoic Francevillian sediments (Gabon) |
| title_sort | first application of re os dating on paleoproterozoic francevillian sediments gabon |
| topic | Dating Re–Os Francevillian Paleoproterozoic Gabon |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.264/ |
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