Emmanuel Robert | Université Claude Bernard Lyon 1 (original) (raw)

Scientific papers by Emmanuel Robert

Boletin de la …, Jan 1, 2003

The study of the ammonite fauna of the Lower to Early Upper Albian formations allow a major revis... more The study of the ammonite fauna of the Lower to Early Upper Albian formations allow a major revision of the biostratigraphic frame of Northern and Central Peru. A new subdivision in ammonites zones, subzones and bio-horizons terms is proposed. The Lower Albian is represented by the Nicholsoni Biozone (subdivided into the umbilicostatus and nicholsoni biohorizons, followed by an Interval Subzone) and by the Raimondii Biozone (carved in three subzones: Haasi, Raimondii - itself divided into the ebrayi and alternum biohorizons and Mathewsi, including the pseudolyelli biohorizon). The Middle Albian is characterized by the Carbonarium Biozone, carved in the Ulrichi and Carbonarium Subzones. The base of the Upper Albian is represented by the Cristatum Subzone.

Géobios, 2001

Revision of the stratigraphy of the 'Marnes noires ~ Hypacanthoplites' Fm. of the eastern South- ... more Revision of the stratigraphy of the 'Marnes noires ~ Hypacanthoplites' Fm. of the eastern South-
Pyrenean Zone provides evidence for the recognition Of a supplementary third-order depositional sequence, inserted
between the Ap5 and Ap6 sequences of the litterature. Its lower boundary falls within the Jacobi subzone (Upper
Aptian, Clansaysesian auct.) and its transgressive systems tract reaches the Aptian-Albian boundary beds. The
lowermost Albian beds are characterized by the new Pseudorbulites convergens subzone and are overlain by the
equivalent of the Milletioides assemblage-subzone of the Anglo-Paris Basin. The Convergens subzo~ae, considered as
a potential Tethyan equivalent of the Schrammeni subzone (first Lower Albian subzone), is defined by the assemblage
of Pseudorbulites convergens, 'Beudanticeras' revoili and Neosilesites nepos. The overlying Milletioides subzone
is identified by the association ofHypacanthoplites trivialis, Hypacanthoplites pachys and Hypacanthoplites gr.
milletianus. Those two subzones are formally defined and evidenced for the first time in the Mediterranean Province
of the Tethyan Realm. Moreover, the Mediterranean and Tethyan character of the ammonite faunas is outlined, and
the successive steps of the palaeobiogeographic influences of the fauna are stated.

Boletin de la …, 1998

Résumé The stratigraphic revision of the Cretaceous series of Northwestern Peru and Southwestern ... more Résumé The stratigraphic revision of the Cretaceous series of Northwestern Peru and Southwestern Ecuador shows that, subsequently to the Albian transgression, three distinct forearc sedimentary basins were formed. These are the turbidity-filled Lancones-Celica Basin (Late Albian to Coniacian or Santonian), the Paita-Yunguilla Basin mainly filled by shales (Middle Campanian to Middle (?) Maastrichtian), and the Talara Basin ss (latest Paleocene-earliest Eocene to Late Eocene). This succession evidences the occurrence of ...

On the southern Tethyan margin, the Late Aptian-Early Albian interval is poorly understood since ... more On the southern Tethyan margin, the Late Aptian-Early Albian interval is poorly understood since sedimentary successions are frequently incomplete and dating is difficult. The Essaouira-Agadir Basin (EAB, Morocco) presents numerous, very good and accessible outcrops of the Cretaceous successions. The aim of this work is to reconstruct the paleoenvironmental conditions prevailing during the Aptian-Albian transition in the EAB. A high-resolution temporal framework based on bio- (ammonite and calcareous nannofossils), sequence- and chemo-stratigraphy (C-isotopes) is first done. In a second time, the analysis of sedimentary facies, calcareous nannofossils and oxygen stable isotopes is carried out in order to define the paleoenvironmental conditions. Two sections were selected (Tinfoul and Anzate sections) on a proximal-distal transect located in the southern part of the basin. The Tinfoul section is located in the eastern proximal part of the basin, where the thickness of Aptian-Albian ...

Cretaceous Research, 2013

In the southern Tethyan margin, the Essaouira-Agadir Basin (EAB), south of Morocco, exhibits well... more In the southern Tethyan margin, the Essaouira-Agadir Basin (EAB), south of Morocco, exhibits well-exposed and fossiliferous sections of Aptian–Albian age. Biostratigraphy by ammonoids and sedimentological analysis have been realized for five sections located along an E-W transect in the EAB. The studied successions were dated from the latest Early Aptian to the Early Albian and are characterized by five major sedimentary discontinuities defining at least four main sedimentary sequences. The Late Aptian–Early Albian succession can be considered a gently westward-dipping ramp, marked by a deepening upward evolution. A quantitative study of calcareous nannofossils and calcium carbonate content has been performed on three of these sections. At this time, the EAB was located in the tropical-equatorial hot arid belt. The decrease in both calcium carbonate content and Nannoconus abundances at the Aptian–Albian transition could be the result of cooler climatic conditions recognized in the EAB, and/or of the associated increasing terrigenous input and nutrients, which hindered carbonate production. In the EAB, the nannofossil productivity is higher below the deposition of dark levels, which are coeval with the Niveau Paquier, recognized as the expression in southern France of the OAE 1b (Early Albian). During the Early Albian, the EAB was characterized by nannofossil fluxes two times lower than the upwelling-influenced Mazagan Plateau (southern Tethyan margin) and eight times lower than the Vocontian Basin (northern Tethyan margin). These results show that, with respect to the northern Tethyan margin, trophic conditions in sea surface waters of the pelagic realm of the southern Tethyan margin were lower. Comparable results obtained by Heldt et al. in the neritic realm of the southern Tethyan margin have been ascribed to more arid climatic conditions.► Sections of the Essaouira-Agadir Basin (Morocco) are studied for the Aptian–Albian. ► Biostratigraphy by ammonoids and sedimentological analyses are realized. ► Quantitative study of calcareous nannofossils is performed. ► Decrease in carbonate production is observed, linked to cooler climatic conditions. ► Nannofossil fluxes are lower in the southern tethyan margin compared to the north.

Antarctic Science, 2013

We describe a new chimaeriform fish, Callorhinchus torresi sp. nov., from the uppermost Cretaceou... more We describe a new chimaeriform fish, Callorhinchus torresi sp. nov., from the uppermost Cretaceous (late Maastrichtian) of the López de Bertodano Formation, Isla Marambio (Seymour Island), Antarctica. The material shows it is distinct from currently known fossil and extant species of the genus, whereas the outline of the tritors (abrasive surfaces of each dental plate) shows an intermediate morphology between earlier records from the Cenomanian of New Zealand and those from the Eocene of Isla Marambio. This suggests an evolutionary trend in tritor morphology in the lineage leading to modern callorhynchids, during the Late Cretaceous-Palaeogene interval.(Received March 02 2012)(Accepted July 18 2012)(Online publication October 08 2012)

Neues Jahrbuch für Geologie und …, 2009

Revue de Paléobiologie, 2009

Basin Research, 2008

The Ayabacas Formation of southern Peru is an impressive unit formed by the giant submarine colla... more The Ayabacas Formation of southern Peru is an impressive unit formed by the giant submarine collapse of the mid-Cretaceous carbonate platform of the western Peru back-arc basin (WPBAB), near the Turonian–Coniacian transition (∼90–89 Ma). It extends along the southwestern edge of the Cordillera Oriental and throughout the Altiplano and Cordillera Occidental over >80 000 km2 in map view, and represents a volume of displaced sediments of >10 000 km3. The collapse occurred down the basin slope, i.e. toward the SW. Six zones are characterised on the basis of deformational facies, and a seventh corresponds to the northeastern ‘stable’ area (Zone 0). Zones 1–3 display increasing fragmentation from NE to SW, and are composed of limestone rafts and sheets embedded in a matrix of mainly red, partly calcareous and locally sandy, mudstones to siltstones. In contrast, in Zones 4 and 5 the unit consists only of displaced and stacked limestone masses forming a ‘sedimentary thrust and fold system’, with sizes increasing to the southwest. In Zone 6, the upper part of the limestone succession consists of rafts and sheets stacked over the regularly bedded lower part. The triggering of this extremely large mass wasting clearly ensued from slope creation, oversteepening and seismicity produced by extensional tectonic activity, as demonstrated by the observation of synsedimentary normal faults and related thickness variations. Other factors, such as pore pressure increases or lithification contrasts probably facilitated sliding. The key role of tectonics is strengthened by the specific relationships between the basin and collapse histories and two major fault systems that cross the study area. The Ayabacas collapse occurred at a turning point in the Central Andean evolution. Before the event, the back-arc basin had been essentially marine and deepened to the west, with little volcanic activity taking place at the arc. After the event, the back-arc was occupied by continental to near-continental environments, and was bounded to the southwest by a massive volcanic arc shedding debris and tuffs into the basin.

Cretaceous Research, 2008

The Upper Aptian-Lower Albian Mural Formation of the Bisbee Group in northern Sonora consists of ... more The Upper Aptian-Lower Albian Mural Formation of the Bisbee Group in northern Sonora consists of eight members, in ascending order the Fronteras, Rancho Bufalo, Cerro La Ceja, Tuape Shale, Los Coyotes, Cerro La Puerta Shale, Cerro La Espina and Mesa Quemada. These members represent shallow marine facies of a major marine transgressive-regressive event that reached the Bisbee basin, except for the Rancho Bufalo Member which is a tongue of the fluvial Morita Formation that underlies the Mural Formation. The facies, succession and regional correlation of its members indicate that deposition of the Mural Formation occurred in northern Sonora on a broad carbonate shelf, the Sonoran shelf, where depositional environments varied from restricted shelf with local terrigenous deltaic and fluvial influence to open shelf with coral-rudist buildups, to offshore shelf. Facies of the Mural deepen across eastern Sonora into the Chihuahua trough and the formation pinches out northwestward in Sonora. The Sonoran shelf was flooded by three long-term depositional cycles of approximately 2.5 myr duration. The first cycle deposited the Fronteras and Rancho Bufalo members and is older than 115.5 Ma, about 118 Ma. The marginal to shallow marine deposits of the Fronteras Members disconformably overlie fluvial strata of the Morita Formation and are sharply overlain by fluvial deposits of the Rancho Bufalo Member. The second cycle deposited the Cerro La Ceja, Tuape Shale and Los Coyotes members and probably embraces the Aptian/Albian boundary; the Cerro La Ceja Member disconformably overlies the Rancho Bufalo Member and Morita Formation in northeastern Sonora but gradationally overlies the Morita in the sections of north-central Sonora. The third cycle deposited the Cerro la Puerta Shale, Cerro la Espina and Mesa Quemada members and is Early Albian in age. The Mesa Quemada Member is gradationally overlain by fluvial deposits of the Cintura Formation. Biostratigraphy is based on ammonites, bivalves, gastropods, benthic and planktic foraminifers, and colomiellids and two biozones are erected to correlate the measured sections.

Boletin de la Sociedad Geologica del Peru, 2006

Cretaceous Research, 2005

Ammonites of the Albian genera Brancoceras, Dipoloceras, Mortoniceratoides and Neophlycticeras ar... more Ammonites of the Albian genera Brancoceras, Dipoloceras, Mortoniceratoides and Neophlycticeras are described and illustrated for the first time from Ecuador. Precise stratigraphic distribution in the Rio Misahuali field section allows delineation of the Middle/Upper Albian boundary in the Oriente of Ecuador through the recognition of the Dipoloceras cristatum Zone.

Journal of Paleontology, 2005

Journal of South American Earth Sciences, 2004

Recent study of the Albian ammonite fauna from Peru provides a major revision of the systematic p... more Recent study of the Albian ammonite fauna from Peru provides a major revision of the systematic position and taxonomy of the family Engonoceratidae, which we place in the superfamily Pulchelliaceae. We consider the oldest south Tethyan representatives, specifically the mahmoudii species described in Algeria, ancestors of the Andean taxa. Peruvian specimens show a monophyletic evolution marked by four morphological and stratigraphical stages, from unornamented Platiknemiceras to evolute Glottoceras and Engonoceras. The weakly ornamented Parengonoceras haasi, a late lower Albian index species, is considered the ancestor of all Peruvian engonoceratids. The family reaches its highest diversity (15 species) in the upper part of the Lower Albian. The genus Glottoceras, which comprises the majority of the microconchs, is considered an Andean paraphyletic equivalent to the Tethyan genus Knemiceras. Globally, Peruvian engonoceratids are dominated by representatives of the genera Parengonoceras and Glottoceras. We also report several engonoceratids, including Engonoceras and Platiknemiceras, for the first time from Peru.El estudio reciente de una fauna de amonites del Albiano del Perú permitio una revisión mayor de la posición sistemática y de la taxonomı́a de la familia de los engonoceratidos, aquı́ integrada en la superfamilia de los Pulchelliaceae. Los representantes más antiguos del margen sur-tethysiano, y especialmente la especie mahmoudii de Algeria, están considerados como los antepasados de los taxa andinos. Los especimenes peruanos muestran una evolución monofilética, marcada por cuatro estadios morfológicos y estratigráficos, desde los Platiknemiceras no ornamentados hasta los Glottoceras y Engonoceras evolucionados. La especie Parengonoceras haasi, poca ornamentada y especie ı́ndice del Albiano inferior elevado, representa el precursor commun de la totalidad de los Engonoceratidos andinos. La familia alcanza su mayor biodiversidad en el Albiano inferior terminal, con la presencia concomitante de quince especies diferentes. El género Glottoceras, que corresponde a la mayorı́a de la formas microconcas y equivalente parafilético andino del género tethyano Knemiceras, está aquı́ rehabilitado. De manera general, los Engonoceratidos peruanos están dominados por los representantes de los géneros Parengonoceras y Glottoceras. Además, algunos otros engonoceratidos, como unos Engonoceras y Platiknemiceras, están descritos por primera vez en el Perú.

Boletin de la Sociedad Geologica del Peru, 2003

Resumen. El análisis de la fauna de amonites de las formaciones del intervalo Albiano inferior -A... more Resumen. El análisis de la fauna de amonites de las formaciones del intervalo Albiano inferior -Albiano superior basal permite una revisión mayor del marco bioestratigráfico del Perú Central y Norte. Una nueva subdivisión en terminos de biozonas, subzonas y biohorizontes está propuesta. El Albiano inferior está representado por la Biozona de Nicholsoni (subdivida en biohorizontes de umbilicostatus y nicholsoni y cuya tope está marcado por una Subzona de intervalo) y la Biozona de Raimondii (subdivida en las Subzonas de Haasi, Raimondii -si-misma recortada en biohorizontes de ebrayi y alternum -y Mathewsi, cuya tope está definido por el biohorizonte de pseudolyelli). El Albiano medio está caracterizado por la Biozona de Carbonarium, recortada en dos Subzonas de Ulrichi y Carbonarium. La base del Albiano superior está representado por la Subzona de Cristatum.

Boletin de la …, Jan 1, 2003

Géobios, 2001

Boletin de la …, 1998

Cretaceous Research, 2013

Antarctic Science, 2013

Neues Jahrbuch für Geologie und …, 2009

Revue de Paléobiologie, 2009

Basin Research, 2008

Cretaceous Research, 2008

Boletin de la Sociedad Geologica del Peru, 2006

Cretaceous Research, 2005

Journal of Paleontology, 2005

Journal of South American Earth Sciences, 2004

Boletin de la Sociedad Geologica del Peru, 2003

Rapport interne du Ministère des Mines, Direction Générale des Mines de Madagascar (inédit), 2012

Journal de l'Association Paléontologique Française, 2012

Rappelons tout d'abord les propos de Laurence Roussillon-Constanty (2010) : « c'est qu'audelà des... more Rappelons tout d'abord les propos de Laurence Roussillon-Constanty (2010) : « c'est qu'audelà des siècles et des particularités culturelles propres à chaque pays, au-delà des différences entre objets d'art et objets de science, les problématiques concernant le patrimoine culturel universitaire n'ont guère changé. A chaque fois, les forces à mobiliser pour conserver et valoriser les collections passent par un désir de transmettre et de préserver, de faire revivre un héritage dont l'existence même nous porte non seulement vers le passé mais aussi vers le futur ». Pour Michel Melot (2004), cela vient du fait que l'objet patrimonial est au centre du fondement et de l'existence même de la société puisque celle-ci se représente dans ses objets qui lui subsiste. Mais comme l'écrit Michèle Antoine (2010), il faut également se demander « comment », « pour qui », « dans quel contexte » et surtout « dans quel but » préserver ces objets constituant les collections.

2ème appel d’offre intérêts intermédiaires ANR, 2012

In : Fonder une identité de campus, Réflexions de l’Atelier National des Campus, 2012

In: Eléments de géologie, 14eme édition, Collection Sciences Sup, Dunod, 2011

Elles témoignent aussi d'un patrimoine géologique régional et national, reconnu par les muséograp... more Elles témoignent aussi d'un patrimoine géologique régional et national, reconnu par les muséographes et valorisé pour le grand public.

Rapport interne de l’Université Grenoble I, 2010

Journal de l’Association Paléontologique Française, 2009

Les collections paléontologiques de l'Institut Dolomieu sont le résultat de l'accumulation des co... more Les collections paléontologiques de l'Institut Dolomieu sont le résultat de l'accumulation des collections d'étude de générations de chercheurs, des dons et des acquisitions de collections particulières, depuis plus de 160 ans. Elles représentent un thésaurus scientifique unique et un support pédagogique et de diffusion des connaissances de grande valeur. Malheureusement, le désintérêt actuel des géologues, des responsables universitaires et des partenaires institutionnels complique leur conservation et leur gestion. Et pourtant, les activités quotidiennes en direction des paléontologues, des étudiants et des autres publics sont nombreuses.

Le patrimoine géologique en Rhône-Alpes. Actes du colloque des 7emes rencontres régionales du patrimoine naturel, Muséum d’histoire naturelle de Grenoble, 2009

Le patrimoine géologique en Rhône-Alpes 7 emes rencontres régionales du patrimoine naturel au Mus... more Le patrimoine géologique en Rhône-Alpes 7 emes rencontres régionales du patrimoine naturel au Muséum d'histoire naturelle de Grenoble De la difficulté de conserver les collections universitaires de la région Rhône-Alpes, patrimoine régional et thésaurus scientifique international A Lyon, comme à Grenoble, des générations de chercheurs ont accumulées des collections qui ont été pendant plus d'un siècle et demi la source de travaux de recherche, de découvertes, de publications, de formation et de diffusion des connaissances. Or depuis quelques années, on constate un réel désintérêt à la fois des scientifiques eux-mêmes, mais surtout des autorités universitaires successives, des acteurs institutionnels et des responsables politiques. Cet exposé montre l'activité à ce jour de ces collections, leurs développements, leur dynamisme mais présente aussi les problèmes quotidiens rencontrés pour mener à bien leur gestion et leur valorisation.

Troisièmes rencontres du patrimoine scientifique en Rhône-Alpes, 2006

HAL (Le Centre pour la Communication Scientifique Directe), 2005

International audienc

Journal of Vertebrate Paleontology, Oct 28, 2022

Cretaceous Research, 2019

The Barremian-Aptian interval is considered a turning point in the extensional evolution of the p... more The Barremian-Aptian interval is considered a turning point in the extensional evolution of the passive Atlantic margin of Morocco. The biostratigraphy and sedimentology study of the coarse-grained clastic deposits of the Essaouira-Agadir Basin (Bouzergoun Fm) indicates that they are entirely late Barremian (Sartousiana p.p. to Sarasini p.p. Zones) and suggests that most of them were deposited in a shallow marine environment, locally impacted by substantial fluvial influences. Facies evolution and the identification of discontinuity surfaces subdivide the unit into seven depositional sequences, two of which are marked by coarse-grained deposits and numerous indications of synsedimentary instability, and are interpreted as tectonically enhanced. These late Barremian tectonic events are interpreted as related to the abrupt uplift of the West Moroccan Arch, a long-lived, NNE-trending positive structure, located east of the Essaouira-Agadir Basin.

Marine and Petroleum Geology, 2018

In this paper, we present an updated biostratigraphic evaluation of the Serdj Formation of the Tu... more In this paper, we present an updated biostratigraphic evaluation of the Serdj Formation of the Tunisian Atlas. Newly collected ammonites, combined with available biostratigraphic data, allowed the establishment of a new and robust stratigraphic framework for this well-known formation. For the first time the characterization of the Mellegueiceras chihaouiae Zone has permitted the specification of the Aptian-Albian transition. This study reveals an early Albian age for the top of the Serdj Formation that includes the main reservoir flow unit which is producing oil in both onshore and offshore Tunisia. Outcrop data analysis has revealed nine transgressive-regressive cycles within the Aptianearly Albian carbonates. During early Aptian the carbonate deposition occurred in deepmarine settings that gave way to shallow, open shelf carbonates deposition during the late Aptian-early Albian. These successions provide evidences enabling their correlation with the third-order global depositional sequences detected in the sedimentary basins of the Tethyan domains. Regional surface to subsurface stratigraphic correlation, based on seismic and wire-line logs, enabled: (1) a reliable correlation between the stratigraphic elements of the buried successions with those of the Serdj Formation, (2) the characterization of the platform-basin transition domain and (3) the verification of the hypothesis that the Serdj Formation carbonates constitute the surface analogue of the subsurface oil field reservoirs. The detailed conceptual stratigraphic model suggests that the Serdj platform developed diachronous. Its demise occurred in the early Albian and not during the Aptian-Albian transition as previously believed. The hydrocarbon-productive reservoirs developed during the regressive phases especially in the up-dip settings of the platform where dolomitization greatly enhanced the reservoir quality.

Cretaceous Research, 2018

In this paper we study the ammonoid taxonomy and biostratigraphy from the upper Aptian to the low... more In this paper we study the ammonoid taxonomy and biostratigraphy from the upper Aptian to the lower Albian of the Cerro Chino area, with an emphasis on an accurate taxonomic characterization of the American endemic forms Kazanskyella, Quitmanites, Immunitoceras and Huastecoceras. These genera are important because they are characteristic of the unique

Treballs del Museu de Geologia de Barcelona, 2015

Informatic inventory of the localities with Rhinocerotidae of the European Neogene and Quaternary... more Informatic inventory of the localities with Rhinocerotidae of the European Neogene and Quaternary. The file of Tertiary and Quaternary age fields with mammals was created within our lab, by a researcher at the beginning of the 1960s. This file contained a series of geographic descriptors (site, locality, department, region, country, location) and geological (age of the deposit), typological for prehistoric material (tools, furniture art...), zoological (mention of the fauna) and botanical (mention of plant species). These descriptors were associated with bibliographic lists on palaeontology, prehistory and palaeobotany. In the following decades, this file has been highly enriched and has become too important to allow a manual access. We decided to computerize all data to facilitate the consultation and querying of this file. This work was carried out with the FileMaker Pro software and developed a plug input on which appear the same descriptors as those of the plug hardback, associated with many lists of values that accelerate the computerization of the data. This computerized file provides valuable assistance to basic research in palaeontology and allows ensuring, through its broadcast, a significant protection of palaeontological sites.

HAL (Le Centre pour la Communication Scientifique Directe), Oct 19, 2022

Newsletters on Stratigraphy

Difficulties of establishing a standard Mediterranean ammonite zonation of Aptian and Albian stag... more Difficulties of establishing a standard Mediterranean ammonite zonation of Aptian and Albian stages is a long-standing issue, which origination lies in paleobiogeographic reasons, debates on taxonomic problems and widespread presence of hiati, condensation and reworked levels, while poor record of ammonites is also connected to several biotic crises and periodic oxygen depletion. Hereby the maintenance of two-folded Aptian is supported with no zonal changes as keeping Deshayesites oglanlensis, D. forbesi, D. deshayesi and Dufrenoyia furcata Interval Zones. Regarding the upper Aptian zonation, the Parahoplites melchioris Zone is discussed, and several changes are proposed: the retention of ‘Nolaniceras nolani’ and ‘Hypacanthoplites jacobi’ Zones is supported, and to re-instate Diadochoceras nodosocostatum subzone as an Interval Zone is suggested. Introductions of Hypacanthoplites elegans and Douvilleiceras leightonense Interval Zones are given, Douvilleiceras mammillatum Zone is briefly discussed. Adoption of a zonation for the Mediterranean middle Albian based on hoplitid ammonites is impossible and must be abandoned, instead raising Lyelliceras lyelli subzone to Interval Zone rank, and discussion of Oxytropidoceras (Oxytropidoceras) roissyanum Interval Zone is given. For the upper Albian, Dipoloceras cristatum Interval Zone, and a zonation based on the succession of Pervinquieria spp. are discussed. Arrhaphoceras briacensis as an Assemblage Zone is discussed and supported. Geochronologic aspect of biozones is out of the scope of this paper.

Comptes Rendus Palevol, 2002

Proposition for a new ammonite biochronology of the Albian series of the Andean Basin (Peru). The... more Proposition for a new ammonite biochronology of the Albian series of the Andean Basin (Peru). The study of the ammonite fauna of the Albian formations allows a major revision of its biostratigraphic frame in northern and central Peru. A carving in ammonite biozones is proposed for the Inca, Chulec and Pariatambo Formations and the Pulluicana group. The Lower Albian is represented by the Nicholsoni Biozone (subdivided into the umbilicostatus, and nicholsoni biohorizons, followed by an interval subzone) and by the Raimondii Biozone (carved in three subzones: Haasi, Raimondii-itself subdivided into the ebrayi and alternum biohorizons-and Mathewsi, including the pseudolyelli biohorizon). The Middle Albian is characterised by the Carbonarium Biozone, carved in the Ulrichi and Carbonarium Subzones. The base of Upper Albian is represented by the Cristatum Subzone. To cite this article: E.

Cretaceous Research, 2008

Repositorio Institucional INGEMMET, 2012

EnglishIn 1965 the French and foreign paleontological sites file was created at the Universite C.... more EnglishIn 1965 the French and foreign paleontological sites file was created at the Universite C. Bernard Lyon 1. Data fields comprised in each file were: country, department, town, site, topographical and geological maps, precise location, photocopy of the map with the deposit score, age, author with bibliographical references, one or several photographs, description and stratigraphic section. This file has been fully computerized using FileMaker Pro software. Input plug is designed for the integration of all textual data. Four multimedia type descriptors have also allowed the addition of photographs of all or part of the information sheet, and lists of pre-established values facilitate the acceleration of the addition. The computerization of this file allows developing a simple, effective and easy to use tool. It should participate in the safeguarding of French and foreign outstanding palaeontological sites catalaEn 1965 fut cree le fichier des gisements paleontologiques francais ...

Cretaceous Research, 2021

Abstract The Subalpine Urgonian platform provides seismic-scale outcrops of interest to constrain... more Abstract The Subalpine Urgonian platform provides seismic-scale outcrops of interest to constrain the depositional organisation of Lower Cretaceous carbonate systems. Revising the biostratigraphy using ammonites, rudists, calcareous algae and orbitolinids and establishing regional stratigraphic correlations between the Gresse-en-Vercors cliff and the Plateau de Glandasse provide a new vision regarding the Urgonian platform stratigraphic architecture of the southern Vercors. The rudist-dominated inner-platform series cropping out in the northern Gresse-en-Vercors cliff grades laterally southward into the bioclastic-dominated Glandasse Formation (defined in the Plateau de Glandasse series). Our new correlations contradict with the Grenoble University’s conceptual platform model which considered the Glandasse Formation as rudist-poor lowstand deposits formed in the southern Vercors and sealed by the transgressive Urgonian limestones formation. Our interpretation better conforms to the Geneva University’s conceptual model, suggesting that the Glandasse and Urgonian limestones formations should be regarded as stratigraphic equivalents. Further investigations ae needed to address the stratigraphic evolution and controlling mechanisms of the regional Urgonian system at the regional scale.

Newsletters on Stratigraphy, 2020

International audienc

Comptes Rendus Geoscience, 2019

The Cretaceous marine transgression proceeded through successive steps from the Albian to the Tur... more The Cretaceous marine transgression proceeded through successive steps from the Albian to the Turonian (dated with ammonites). The onlapping wedge begins with coastal transgressiveeregressive short-term sequences on massive, probably fluvial sandstones to be correlated with the very thick continental Lower Cretaceous succession found in the Puerto Cansado well in the Tarfaya sub-basin to the north. A second step, of probable Cenomanian age, reached the Palaeozoic basement. A third, more pronounced step occurred during the earliest Turonian with platy laminated limestone overlain by marlstone bearing pyritized ammonites. At early Turonian peak transgression, a marine connection was possibly established between the Atlantic and the Tethyan margins, between the Anti-Atlas and the Reguibat Shield. From large-scale correlation integrating what occurred along the southwestern shoulder of the Atlas rift, the South Moroccan Atlantic margin may have undergone a short-lived tectonic uplift around the Cenomanian eTuronian boundary.

Treballs del Museu de Geologia de Barcelona, 2015

PRIEUR, A., ROBERT, E., DEROIRE, J., BAILLY, M. Digitisation and computerizing of the palaeontolo... more PRIEUR, A., ROBERT, E., DEROIRE, J., BAILLY, M. Digitisation and computerizing of the palaeontological sites file of the Geological collections at Université C. Bernard Lyon 1. In 1965 the French and foreign paleontological sites file was created at the Université C. Bernard Lyon 1. Data fields comprised in each file were: country, department, town, site, topographical and geological maps, precise location, photocopy of the map with the deposit score, age, author with bibliographical references, one or several photographs, description and stratigraphic section. This file has been fully computerized using FileMaker Pro software. Input plug is designed for the integration of all textual data. Four multimedia type descriptors have also allowed the addition of photographs of all or part of the information sheet, and lists of pre-established values facilitate the acceleration of the addition. The computerization of this file allows developing a simple, effective and easy to use tool. It should participate in the safeguarding of French and foreign outstanding palaeontological sites.

Carnets de géologie (Notebooks on geology), 2017

R Re ev vi ie ew w o of f t th he e e ea ar rl ly y A Al lb bi ia an n a am mm mo on ni it te es ... more R Re ev vi ie ew w o of f t th he e e ea ar rl ly y A Al lb bi ia an n a am mm mo on ni it te es s o of f t th he e M Mo on nt tm me el ll l F Fo or rm ma at ti io on n n ne ea ar r M Ma ar rm me el ll la ar r ((S Sa al lo ou u-G Ga ar rr ra af f B Ba as si in n, , T Ta ar rr ra ag go on na a, , C Ca at ta al lo on ni ia a, , S Sp pa ai in n)) Josep Anton MORENO-BEDMAR 1 Emmanuel ROBERT 2 Rafel MATAMALES-ANDREU 3 Telm BOVER-ARNAL 4