Carine Lézin

Joseph Canérot

Thomas Saucède

Comptes Rendus Géoscience

Comptes RendusGéoscienceSciences de la PlanèteJoseph Canérot, Carine Lézin and Thomas SaucèdeIntegrated stratigraphy of the Jurassic and the Cretaceous: a tribute toJacques Rey (1940–2018)Volume 354, Special Issue S3 (2022), p. 1-4Published online: 13 January 2023Issue date: 13 January 2023https://doi.org/10.5802/crgeos.197Part of Special Issue: Integrated stratigraphy of the Jurassic and the Cretaceous: atribute to Jacques ReyGuest editors: Carine Lézin (Laboratoire Géosciences Environnement, UniversitéPaul Sabatier, 31000 Toulouse, France) and Thomas Saucède (Biogéosciences,UMR 6282 CNRS, Université Bourgogne Franche-Comté, 21000 Dijon, France)This article is licensed under theCreative Commons Attribution 4.0 International License.http://creativecommons.org/licenses/by/4.0/Les Comptes Rendus. Géoscience — Sciences de la Planète sont membres duCentre Mersenne pour l’édition scientifique ouvertewww.centre-mersenne.orge-ISSN : 1778-7025Comptes RendusGéoscience — Sciences de la Planète2022, Vol. 354, Special Issue S3, p. 1-4https://doi.org/10.5802/crgeos.197Integrated stratigraphy of the Jurassic and the Cretaceous: a tribute to Jacques Rey /Stratigraphie intégrée du Jurassique et du Crétacé : un hommage à Jacques ReyIntegrated stratigraphy of the Jurassic and theCretaceous: a tribute to Jacques Rey (1940–2018)Stratigraphie intégrée du Jurassique et du Crétacé : un hommageà Jacques Rey (1940–2018)Joseph Canérota, Carine Lézin ∗, b and Thomas Saucède ca 3, Chemin Cordeau, 31200 Toulouse, Franceb Géosciences Environnement Toulouse (GET), UMR5563 Université deToulouse/CNRS/IRD/Université Paul Sabatier, Observatoire Midi-Pyrénées,Toulouse, Francec Biogéosciences, UMR6282, CNRS, Université Bourgogne Franche-Comté,6 boulevard Gabriel, 21000 Dijon, FranceE-mails: jcanerot@live.fr (J. Canérot), carine.lezin@get.omp.eu (C. Lézin),thomas.saucede@u-bourgogne.fr (T. Saucède)Published online: 13 January 2023, Issue date: 13 January 2023The Groupe Français du Crétacé and GroupeFrançais d’étude du Jurassique are pleased to joinand offer this thematic issue as a tribute to ourcolleague and friend, Professor Jacques Rey, for hisremarkable career as a specialist of stratigraphy.Jacques Rey was a pioneer in Sequence Stratigraphy.Jacques Rey passed away at home, in Toulouse, onMarch 5th, 2018. He had carried out his academic ca-reer at Paul Sabatier University of Toulouse. He be-gan as a teacher in 1962 until he retired in 2002. Dur-ing these forty years, he successively passed all aca-demic degrees: laboratory assistant (1964), assistantlecturer (1967), lecturer (1975) and professor (1979),∗Corresponding author.jumping up to the exceptional level (1993). Since2002, he was professor emeritus.1. Academic activities: teaching, management,expert assessmentJacques Rey taught geology at all academic levels, un-dergraduate and graduate, but also for public admin-istrations, secondary schools, or industrial managers.He also gave over 30 lectures on the evolution of lifeon Earth, and in the palaeontology, stratigraphy andgeology of the Pyrenees in different towns and uni-versities of southern France, Spain, Portugal and Mo-rocco. In 1983, he published a book on stratigraphy(Technip). Finally, during 10 years long he taught se-quence stratigraphy at the National High School forOil and Motors in Paris.ISSN (electronic) : 1778-7025 https://comptes-rendus.academie-sciences.fr/geoscience/2 Joseph Canérot et al.He directed nearly 30 PhD theses and took partin many doctoral boards in France, Portugal, Spainand Morocco. He also organized 14 scientific meet-ings and participated to 53 congresses, including theInternational Geological Congresses of Paris (1980),Moscow (1984) and Beijing (1996).Jacques Rey has been involved in many adminis-trative positions, at different levels:• International: member of the InternationalSubcommission on Stratigraphic Classifica-tion (IUGS, 1990–1998); member of the Valu-ation Committee of Earth and Space researchUnits of Portugal (1990–1998);• National: President of Commission 2 withinthe 36th section of the National Committeeof the Universities (1992–1995); President ofthe National French Committee of Stratig-raphy (1990–1998) which published a booktitled “Stratigraphie, terminologie française”[Rey, 1997]; Director of the Research Unit1405 of the National Centre for Scientific Re-search (1990–1994); President of the FrenchGroup of the Cretaceous (1978–1982);• Local: member of the Board of Directorsof Paul Sabatier University (1986–1990);Provisional Administrator of the ResearchFormation, Unit “Life and Earth sciences”(1984–1987); President of the Commissionfor Teaching (1986–1990).Finally, Jacques Rey has been involved as an ex-pert in different fields such as the hydrogeology ofthe French departments of Lot, Tarn and Tarn-et-Garonne, the Administrative Tribunal of Toulouse, orthe Scientific Council of the Regional Natural Parc ofQuercy.2. Geological research: from biostratigraphy tosequence stratigraphyAfter a Master thesis dedicated to the geologicalstudy of the Northern part of the Arize Massif in theCentral Pyrenees (1963), Jacques Rey moved to Portu-gal where he worked up to the last years of his life. HisState Doctorate concerned the Lower Cretaceous ofthe Lusitanian Basin [Rey, 1972], then he carried outcooperative studies in a widened area involving dif-ferent Atlantic-verging basins from France (AquitaineBasin), Portugal (Lusitanian and Algarve basins) andMorocco (Essaouira Basin). All along these over 40years of intense activity, he developed three mainstratigraphic approaches regarding the Jurassic andCretaceous infillings of the considered basins.2.1. BiostratigraphyIn his doctorate thesis, Jacques carried out a de-tailed stratigraphic study of the Lower Cretaceousof the Estremadura Basin, defining different unitsand providing new data on their age and correla-tion, both for marine and terrestrial paleoenviron-ments. Age dating was based on micro-(foraminifera,algae) and macrofauna, especially echinoderms, oneof his main palaeontologic specialities. This biostrati-graphic approach led to the definition of different,newly correlated units, using sequence stratigraphyconcepts and giving way to new palaeoenvironmen-tal and palaeogeographic reconstructions.A synthesis of his main results was published in2002 and 2008 [Dinis et al., 2002, 2008]. In the sameway, more studies were carried out in different At-lantic bordering basins such as the Algarve, Aquitaineand Essaouira ones.2.2. Sequence stratigraphySince 1984, Jacques Rey took interest in the conceptsand methods of sequence stratigraphy, the sourcedocuments being published by Vail et al. (AmericanAssociation of Petroleum Geologists, [1977]). Follow-ing this new interpretation, “cycles of relative sealevel changes on a global scale are evident through-out Phanerozoic time. The evidence is based onthe facts that many regional cycles (third order se-quences) developed on different continental marginsare simultaneous and that the relative magnitudes ofthe changes are generally similar”.In the study area (Aquitaine, Portugal and Mo-rocco), Jacques and his colleagues described all thirdorder sequences (genetic sequences) developed inJurassic and Early Cretaceous times. Detailed bios-tratigraphic, sedimentological and tectonic datawere gathered within third order sequences madeup of system tracts and separated by unconformi-ties, providing good correlations at the scale of thedifferent studied basins. The respective control ofthe relative sea-level change, subsidence and sedi-mentary supply was pointed out within the accumu-lation process. New data were provided in regionalJoseph Canérot et al. 3studies: normal faulting may occur suddenly andprovide more accommodation than eustatic sea levelchanges (Jurassic series from Quercy); third order se-quences can be diachronous when they are includedwithin basin infillings provided by different tectonicplates (Lusitanian and Moroccan basins).2.3. Relationship between system tracts and mi-cropaleontological associationsConsidering that foraminifers and ostracods consti-tute good stratigraphical and palaeoenvironmentalmarkers, Jacques Rey used these microfossils forhis interpretations of variations in sea level change,palaeogeographic communications between basins,nourishing supplies and physicochemical proper-ties impacting benthic communities. In turn, mi-cropalaeontological associations could also helpidentify system tracts.A first study concerning Toarcian Foraminiferafrom Northern Aquitania (Quercy, France) showedthe existence of a close relationship between thecomposition of Nodosariidae communities and sea-level changes. Later on, working on Foraminiferafrom the Carixian and Domerian of Quercy andGrands Causses (France) he confirmed these inter-pretations and highlighted the contribution of quan-titative methods to appreciate depth variations inplatform environments. Other studies dealing withthe factorial diversity of deposits and the factorialamplitude of species led Jacques Rey to draw threemain conclusions: (i) microfossil associations allowidentifying sedimentary system tracts even in homo-geneous series (such as in marls, for example), lowand high sea levels providing different biocoenoticsignals; (ii) the statistical analysis of micropalaeon-tological communities can lead to “factorial correla-tions” at basin scale; (iii) sea level changes influencethe species composition of assemblages and specia-tion processes.In his last years, Jacques began new studies onthe North Pyrenean foreland basin infilling but hisdeclining health broke this new project.Jacques Rey was the Fontannes (1975) and Bour-cart (1990) prices winner given by the FrenchGeological Society. He had a decoration (PalmesAcadémiques) given by the French Ministry of Ed-ucation (1990) and was Doctor Honoris Causa ofFigure 1. Jacques Rey during his talk of “Doc-tor Honoris Causa” at the Universidade Nova deLisboa (Portugal).the Universidade Nova de Lisboa, Portugal (2012)(Figure 1).Jacques Rey was a great specialist of stratigraphyand developed an integrated stratigraphy approachin order to give a temporal framework to sedimentaryseries and reconstruct the evolution of paleoenviron-ments and sedimentary basins, particularly duringJurassic and Cretaceous periods.The present thematic issue was an opportunityfor his former students and colleagues to celebrateProfessor Jacques Rey for his remarkable career andachievements in the promotion and development ofintegrated stratigraphy. We are deeply honoured andpleased to contribute to such a tribute to him in thisthematic issue of Comptes Rendus Geoscience enti-tled “Integrated stratigraphy of the Jurassic and theCretaceous”.Illustrating the value of integrated stratigraphicapproaches to sedimentologists and paleontolo-gists for high-resolution evaluation of past climatic,oceanographic, sedimentary, ecological and biogeo-graphic processes in Earth history, the present issueincludes six original contributions to the fields ofsedimentology and palaeontology, based on originalJurassic and Cretaceous case studies. Two of themhighlight the value of linking fossil and stratigraphicstudies, not only in taxonomy, evolution, and bios-tratigraphy, but also in biogeography and for thereconstruction of paleoenvironments. Studying am-monites of the Lower Jurassic (Pliensbachian) se-ries of Southern Vendée (France), Fauré and Bohain[2022] contribute to improving our understanding of4 Joseph Canérot et al.the paleobiogeography of the Lusitanian Basin andSouthern Vendée, and more widely of the North-WestEuropean Bioprovince with regards to the dispersalof Tethyan marine fauna to the western Europe.Picollier [2022] explores the rich belemnite faunasof early Cretaceous deposits (Berriasian–Albian) ofthe Vocontian Basin (southeast of France) and re-minds the value of well-delineated paleontologicalspecies in biostratigraphy based on quantitative andstatistical approaches. The four other contributionsshow the interest of an integrated approach for de-termining the factors controlling sedimentation.Chemostratigraphic (δ13C) and biostratigraphic cor-relations between the Poigny borehole (Paris Basin)and other European sections, associated to otherdata (palynological assemblages, dinoflagellates,clay mineralogy), allow to recognize thirty-three pa-lynological events and show the dominant role ofsea-level variations in paleoenvironmental changesduring the upper Coniacian-Campanian [Pearceet al., 2022]. The work by Ferry et al. [2022] con-tributes to demonstrate the tectonic control of theforced regression around the Aptian–Albian bound-ary recorded in the SE France basins, associated tothe “Austrian” tectonic pulse. Duarte et al. [2022]present a sedimentological, organic, and isotopicstudy of the Upper Sinemurian of the S. Pedro deMoel section (Lusitanian Basin) that reveal the trans-gressive context of sedimentation and the impactof diagenetic transformations on δ13C variations.Finally, the analysis of the organic fraction (Rock-Eval, Palynofacies. . . ) in late Jurassic deposits of theBoulonnais (France) by Schnyder et al. [2022] high-lights the importance of seawater warming for theoccurrence of the Kimmeridgian Organic Rich Bandsdeposition in NW Europe.Conflicts of interestAuthors have no conflict of interest to declare.ReferencesDinis, J. L., Rey, J., Callapez, P. P., Cuneha, P. P., andPena Dos Reis, R. (2008). Stratigraphy and allogeniccontrols of the western Portugal Cretaceous: an up-dated synthesis. Cretac. Res., 29, 772–780.Dinis, J. L., Rey, J., and de Graciansky, P. C. (2002).Le Bassin lusitanien (Portugal) à l’Aptien supérieur— Albien: organisation séquentielle, propositionde corrélations, évolution. C. R. Géosci., 334, 757–764.Duarte, L. V., Silva, R. L., Azerêdo, A. C., Comas-Rengifo, M. J., and Mendonça Filho, J. G. (2022).Shallow-water carbonates of the Coimbra Forma-tion, Lusitanian Basin (Portugal): contributions tothe integrated stratigraphic analysis of the Sine-murian sedimentary successions in the westernIberian margin. C. R. Géosci., 354(S3), 89–106.Fauré, P. and Bohain, P. (2022). Pliensbachian am-monites from Southern Vendée (France). Towardthe individualization of an Atlantic paleobiogeo-graphic region. C. R. Géosci., 354(S3), 5–25.Ferry, S., Grosheny, D., and Amédro, F. (2022). Sed-imentary record of the “Austrian” tectonic pulsearound the Aptian–Albian boundary in SE France,and abroad. C. R. Géosci., 354(S3), 67–87.Pearce, M. A., Jarvis, I., Monkenbusch, J., Thibault,N., Ullmann, C. V., and Martinez, M. (2022).Coniacian–Campanian palynology, carbon iso-topes and clay mineralogy of the Poigny borehole(Paris Basin) and its correlation in NW Europe.C. R. Géosci., 354(S3), 45–65.Picollier, M.-C. (2022). Biometry and biostratigraphyof the Early Cretaceous belemnite genus Castel-lanibelus from the southeast of France. C. R.Géosci., 354(S3), 27–43.Rey, J. (1972). State Doctorate thesis - Recherchesgéologiques sur le Crétacé inférieur del’Estremadura (Portugal), volume 21. Mem.Serv. Geol. Portugal, N.S., Lisboa.Rey, J. (1997). Stratigraphie, terminologie française.Elf Exploration Editions.Schnyder, J., Baudin, F., and Jan du Chêne, R.(2022). The Oxfordian-Kimmeridgian transition inthe Boulonnais (France) and the onset of organic-rich marine deposits NW Europe: a climatic con-trol? C. R. Géosci., 354(S3), 107–124.Vail, P. R., Mitchum Jr., R. M., and Thompson, S.(1977). Seismic stratigraphy and global changes ofsea level, part four: global cycles of relative changesof sea level. AAPG mem., 26, 83–98.

Integrated stratigraphy of the Jurassic and the Cretaceous: a tribute to Jacques Rey (1940–2018)

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Integrated stratigraphy of the Jurassic and the Cretaceous: a tribute to Jacques Rey (1940–2018)

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