Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation
The age of the Paleogene deposits of the Haut Var (Provence, France) has been the subject of debate. Particularly, the ''Calcaire à Bithynies'' and the ''Sables bleutés'' units were ascribed either to the early Eocene or to the Oligocene. A stratigraphical cla...
| Authors: | , , , , , , |
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| Format: | article |
| Status: | Versión aceptada para publicación |
| Publication Date: | 2017 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/124877 |
| Online Access: | https://hdl.handle.net/2445/124877 |
| Access Level: | Open access |
| Keyword: | Estratigrafia Paleogen Provença (França) Stratigraphic geology Paleogene Provence (France) |
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Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' FormationPhilip, J.Vianey-Liaud, M.Martín-Closas, CarlesTabuce, R.Léonide, P.Margerel, J.-P.Noël, J.EstratigrafiaPaleogenProvença (França)Stratigraphic geologyPaleogeneProvence (France)The age of the Paleogene deposits of the Haut Var (Provence, France) has been the subject of debate. Particularly, the ''Calcaire à Bithynies'' and the ''Sables bleutés'' units were ascribed either to the early Eocene or to the Oligocene. A stratigraphical clarification is required in order to precise the paleogeographical relationships of the Haut Var Paleogene sedimentary series with coeval deposits in the neighbouring southern Provence and Subalpine regions and other European domains. The study area is characterized by tectonically separated synclines and grabens filled in by continental Paleogene deposits. Detailed mapping and lithostratigraphical logging, sedimentological and microfacies analysis have been undertaken in order to provide a reliable stratigraphical framework. Biostratigraphical subdivisions were established based on five different fossil groups: mammals, charophytes, gastropods, ostracodes, and foraminifers. Accordingly, five formations are distinguished and dated: ''Calcaire a` Microcodium'' and ''Brèche à Microcodium'' (Danian); ''Marnes à oeufs d'oiseaux'' (Selandian(?)-earliest Ypresian); 'Sables bleutés du Haut Var' (early-late(?) Ypresian); and ''Bourdas conglomerates'' (Rupelian). Particular emphasis is given to the study of the controversial 'Sables bleute´ s du Haut Var' Formation. As a result, correlations have been established between the different syncline and graben areas where Paleocene-Eocene and Oligocene deposits occur. Terrestrial deposits (carbonate paleosols and piedmont alluvial fans) took place during Paleocene times, while fluvial (cross-bedded sands) and lacustrine carbonate deposits developed in a foreland compressional intracontinental basin surrounded by emerged areas and tectonic highs during the early Ypresian. Paleoenvironmental and paleogeo- graphical analysis strengthen the view that a relative isolation characterized the Haut Var area during the early Eocene, probably enhancing episodes of brackish water or evaporitic sedimentation and gastropod endemism. During the late Eocene Pyrenean-Provence tectonic phase, the E-W trending Haut Var overthrusts have been emplaced posteriorly to the deposition of the 'Sables bleute´ s du Haut Var' Fm. Finally, coarse alluvial fan and local lacustrine carbonate sedimentation occurred during the Oligocene in narrow N-S trending subsident extensional grabens associated with the N-S trending Barjols Triassic uplift.Elsevier Masson SAS2018201820172018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion63 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/124877Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.geobios.2017.06.002Geobios, 2017, vol. 50, num. 4, p. 319-339https://doi.org/10.1016/j.geobios.2017.06.002(c) Elsevier Masson SAS, 2017info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1248772026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| title |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| spellingShingle |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation Philip, J. Estratigrafia Paleogen Provença (França) Stratigraphic geology Paleogene Provence (France) |
| title_short |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| title_full |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| title_fullStr |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| title_full_unstemmed |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| title_sort |
Stratigraphy of the Haut Var Paleogene continental series (Northeastern Provence, France): New insight on the age of the 'Sables bleutés du Haut Var' Formation |
| dc.creator.none.fl_str_mv |
Philip, J. Vianey-Liaud, M. Martín-Closas, Carles Tabuce, R. Léonide, P. Margerel, J.-P. Noël, J. |
| author |
Philip, J. |
| author_facet |
Philip, J. Vianey-Liaud, M. Martín-Closas, Carles Tabuce, R. Léonide, P. Margerel, J.-P. Noël, J. |
| author_role |
author |
| author2 |
Vianey-Liaud, M. Martín-Closas, Carles Tabuce, R. Léonide, P. Margerel, J.-P. Noël, J. |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Estratigrafia Paleogen Provença (França) Stratigraphic geology Paleogene Provence (France) |
| topic |
Estratigrafia Paleogen Provença (França) Stratigraphic geology Paleogene Provence (France) |
| description |
The age of the Paleogene deposits of the Haut Var (Provence, France) has been the subject of debate. Particularly, the ''Calcaire à Bithynies'' and the ''Sables bleutés'' units were ascribed either to the early Eocene or to the Oligocene. A stratigraphical clarification is required in order to precise the paleogeographical relationships of the Haut Var Paleogene sedimentary series with coeval deposits in the neighbouring southern Provence and Subalpine regions and other European domains. The study area is characterized by tectonically separated synclines and grabens filled in by continental Paleogene deposits. Detailed mapping and lithostratigraphical logging, sedimentological and microfacies analysis have been undertaken in order to provide a reliable stratigraphical framework. Biostratigraphical subdivisions were established based on five different fossil groups: mammals, charophytes, gastropods, ostracodes, and foraminifers. Accordingly, five formations are distinguished and dated: ''Calcaire a` Microcodium'' and ''Brèche à Microcodium'' (Danian); ''Marnes à oeufs d'oiseaux'' (Selandian(?)-earliest Ypresian); 'Sables bleutés du Haut Var' (early-late(?) Ypresian); and ''Bourdas conglomerates'' (Rupelian). Particular emphasis is given to the study of the controversial 'Sables bleute´ s du Haut Var' Formation. As a result, correlations have been established between the different syncline and graben areas where Paleocene-Eocene and Oligocene deposits occur. Terrestrial deposits (carbonate paleosols and piedmont alluvial fans) took place during Paleocene times, while fluvial (cross-bedded sands) and lacustrine carbonate deposits developed in a foreland compressional intracontinental basin surrounded by emerged areas and tectonic highs during the early Ypresian. Paleoenvironmental and paleogeo- graphical analysis strengthen the view that a relative isolation characterized the Haut Var area during the early Eocene, probably enhancing episodes of brackish water or evaporitic sedimentation and gastropod endemism. During the late Eocene Pyrenean-Provence tectonic phase, the E-W trending Haut Var overthrusts have been emplaced posteriorly to the deposition of the 'Sables bleute´ s du Haut Var' Fm. Finally, coarse alluvial fan and local lacustrine carbonate sedimentation occurred during the Oligocene in narrow N-S trending subsident extensional grabens associated with the N-S trending Barjols Triassic uplift. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2018 2018 2018 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion |
| format |
article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/124877 |
| url |
https://hdl.handle.net/2445/124877 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Versió postprint del document publicat a: https://doi.org/10.1016/j.geobios.2017.06.002 Geobios, 2017, vol. 50, num. 4, p. 319-339 https://doi.org/10.1016/j.geobios.2017.06.002 |
| dc.rights.none.fl_str_mv |
(c) Elsevier Masson SAS, 2017 info:eu-repo/semantics/openAccess |
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(c) Elsevier Masson SAS, 2017 |
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openAccess |
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63 p. application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier Masson SAS |
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Elsevier Masson SAS |
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Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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