François Fournier

Aix-Marseille Université | AMU · Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement

A 200-meters thick carbonate succession has been deposited in shallow-water, saline lake environments during the Priabonian-Rupelian in the Issirac Basin (South-East France). The palaeoenvironmental and palaeogeographic significance of such saline lake carbonates has been characterized on the basis of a multi-proxy analysis including 1) depositiona...

The equivalent pore aspect ratio provides a tool to detect pore types by combining compressional and shear wave velocities, porosity, bulk density, and mineralogical composition of carbonate rocks. The integration of laboratory measurements, well logs, and petrographic analysis of carbonate rocks from various depositional and diagenetic settings (L...

Past shallow-water carbonate environments of the main island of New Caledonia (NC) have been subject to high terrigenous influx derived from the erosion of ultramafic obducted nappes and are therefore a relevant case study for characterizing neritic carbonate production in mixed carbonate-siliciclastic systems under a tropical climate. More particu...

New insights into the geodynamic evolution, the paleogeographic framework and the paleoclimatic setting of the Upper Eocene-Oligocene lacustrine basins from South-East France have been provided by an integrative approach combining geochronology, micropaleontology and stable isotope analyses. Usingle bondPb dating on calcite, pollen-based climatostr...

The Eocene–Oligocene Transition (EOT) is crucial for understanding the climate evolution of the Earth but is poorly documented in the terrestrial domains. A pollen record from the early Priabonian to the late Aquitanian encompassing the EOT was produced for thirty-three locations in Southeastern France. Changes in lowland flora and vegetation were...

Aux alentours de 110/100 av. J.-C., l’oppidum de la Courtine subit un siège avec tirs d’artillerie, probablement suivi de son abandon. Parmi les armes de jet retrouvées devant le bastion oriental, ainsi que dans le quartier situé immédiatement derrière celui-ci, les boulets de catapulte constituent des témoins importants permettant d’identifier l’a...

Cet article fait le point sur les connaissances du plateau continental dans la baie de Marseille, a partir des données géologiques et géophysiques des dix missions qui ont eu lieu sur ce territoire depuis 1965 et surtout des 5 dernières missions qui ont eu lieu depuis 2000. Jusqu'ici on n'avait que les données sur les dépôts superficiels. Grace aux...

Abstract: The environment of the Marseille basin in the Early Pleistocene was reconstructed through a multiproxy study of fluvial tufa deposits. Palaeomagnetic measurements revealed the Jaramillo subchron and dated the tufa to within the 0.8-1.5 Ma interval, probably between 0.9 and1.2 Ma. Sedimentological studies show varied depositional environme...

An integrated approach combining petrography, photogrammetry, geochronology, SEM, and geochemical data was utilized to analyze lithofacies, stacking patterns, and lateral facies variations, and to interpret environmental dynamics during the deposition of carbonates from ‘La Barre du Cengle’ in the Early Paleogene. Located in the SE of France, the e...

Based on detailed sedimentological analyses of cores, interpretation of well logs and a set of geochemical measurements performed on lacustrine sedimentary rocks, the palaeoenvironmental evolution and the sedimentary architecture of the Paleogene continental Vistrenque Basin (SE France) have been reconstructed. The analysis of sedimentary archives...

A substantial quantity of ballast, primarily comprising blocks and pebbles of limestones and quartzose limestones, has been recovered in Paržine Bay (Ilovik Island, Croatia) in the stern section of a sailing vessel discovered in 2016, that wrecked between the second and the third quarter of the 2nd C. BC. This research introduces an integrated meth...

La sédimentation lacustre ancienne est propice à l’enregistrement des changements paléoclimatiques et paléogéographiques. L’analyse sédimentologique, stratigraphique, géochimique, et micro-paléontologique des séries sédimentaires continentales permet de restituer les paléoenvironnements de dépôt et de fournir des estimations paléoclimatiques (salin...

When the modern features of large-scale Asian monsoonal circulation were set-up is poorly constrained and pre-Neogene monsoonal archives are rare. This study investigates the temporal evolution of neritic carbonates in the proto-South China Sea to reconstruct East Asian monsoonal currents and winds during the middle to late Paleogene. Analysis of t...

The Salta Basin, located in northwest Argentina, was associated with the breakup of Gondwana during the Cretaceous period. It is subdivided into four sub-basins (Lomas de Olmedo - east; Sey - west; Tres Cruces - north; and Metán-Alemania - south) that were filled with sediments from Pirgua (synrift phase) and Balbuena (sag phase) supersequences. Th...

The Arc Basin is an E–W oriented depression, located in southeastern France, in which marine, lagoon, lacustrine, fluvial, palustrine and pedogenic sedimentary deposits were formed from the Upper Cretaceous (Santonian) to the Middle Eocene (Lutetian). This research covers the sedimentological and stratigraphical analyses of the outcrops of “La Barr...

New U/Pb dating on detrital zircons from three variscan massifs located in western Provence exhibits several clusters of ages spanning from the Variscan until the Archean. Also Cadomian, Panafrican, Kibaran/Genvillian and Birrimian/Eburnean age have been evidenced. A western and northern African provenance is favored for such zircons.

The rocks of the Corderie antic quary belong to the Oligocene formations of the Marseille basin. They were used, six century ago, by the first greeks inhabitants to make "Sarcophages". These rocks were specific and very rare. We studied their environmental deposition by geological , sedimentological and geochemistry researchs in order to find these...

The integrative analysis of a lacustrine carbonate succession from Butte Iouton hill (Vistrenque basin, SE France) brings new insights into depositional models of oolitic saline lake margins and provides new details regarding the late Eocene paleogeography of southeast France. Depositional facies analysis and paleoenvironmental reconstructions allo...

Le canyon de Cassidaigne, localisé au large de Cassis, est l'un des plus profond de la Méditerranée nord-occidentale. Il est célèbre aussi bien par les études scientifiques et technologiques qui lui ont été consacrées que par les polé-miques environnementales qu'il a suscitées, relatives au rejet des « boues rouges » de l'usine d'alumine de Gardann...

In this study, we focused on the formation and preservation processes of colluvial sedimentary breccias within an extensional context. The breccias studied in this work (from Crete and the Pyrenees) are characterized by poorly sorted polygenic deposits of highly angular carbonate clasts whose size ranges from pebbles to blocks measuring several mil...

Changes in sedimentary profiles and stratigraphic architecture over time in lake basins are shown to be relevant markers of climate changes in terrestrial palaeoenvironments. The stratigraphic architecture of the Priabonian (late Eocene)–early Rupelian (early Oligocene) Alès–Saint-Chaptes–Issirac saline lake system has been reconstructed from the s...

Neogene and Quaternary shallow-water carbonate records surrounding New Caledonia main island, Grande Terre, provide a good example for understanding the stratigraphic architecture of tropical mixed carbonate-siliciclastic systems. Due to a southeastern tilt of the eastern margin, the eastern shelf of Grande Terre has been better preserved from eros...

The acoustic properties of heterozoan and photozoan carbonates are compared and interpreted in the light of their distinct patterns of diagenetic evolution. The combined role of depositional and diagenetic processes on the petroacoustic signatures of both heterozoan and photozoan carbonates has been assessed on the basis of a multi-disciplinary and...

Detection of pore types and diagenetic features from seismic data is a major challenge for the evaluation of carbonate reservoirs in the subsurface. Based on a detailed petrographical and petrophysical analysis of carbonate rock using optical and scanning electron microscopy, mercury-injection measurements, digital image analysis, and well logs, we...

The comments raised by Paumard et al. (2020) led us to identify some pitfalls and limitations regarding the use of seismic geomorphology and seismic stratigraphy for paleoenvironmental reconstructions of carbonate systems and to add some clarifications on the Teillet et al. (2020a) depositional model. The comparison of the paleoenvironmental predic...

Many ancient carbonate build-ups are impacted by meteoric diagenetic processes including karstification. However, very little is known about the acoustic properties and seismic expression of karstified reservoirs. This paper investigates potential seismic expressions of karstified buildups by means of synthetic seismic modelling. The overall strati...

A major climatic shift, from a glasshouse world to a colder climate with well-developed ice sheets, occurred during the Cenozoic. Such a transition is recorded in both marine and terrestrial records. The latter is more fragmentary and thus comparatively less well known from a climatic point of view. Leaves are abundant fossil remains, which can be...

A method of quantitative sequence stratigraphy based on strati-graphic forward modeling is tested on carbonate sedimentary systems (CSSs), especially on shallow-water carbonate platforms. Unless clear three-dimensional (3-D) and two-dimensional stratigraphic geometries crop out or are imaged by seismic data, 3-D carbonate sequence stratigraphic arc...

In recent years, δ13C and δ18O chemostratigraphy has become a powerful tool used to solve controversial results using different biological time markers from shallow-marine carbonate environments and establish long-distance correlations across proximal and distal settings. However, its reliability was recently questioned due to the impact of diagene...

The geological origin of seismic reflections, within a carbonate gas reservoir, has been determined on the basis of an integrative analysis of cores, well-logs, pre-production and 4D time-lapse-seismic data. The gas reservoir is subdivided into meter to decameter-thick diagenetic units which are characterized by distinct acoustic properties. Low im...

Carbonates probably host the most complex aquifers in terms of organisation of porosity networks and flow behaviour. Their heterogeneity originates at different scales and from numerous processes related to geology, hydrodynamics, chemistry and mechanic. These processes occur during a longterm history from just after the deposition of sediments to...

The development history of an oligo-mesophotic, early Miocene, isolated carbonate system (>160 m in thickness), forming the uppermost part of the Oligo-Miocene Yadana buildup (northern Andaman Sea), has been evidenced from the integration of sedimentological core studies from 4 wells (cumulated core length: 343 m), well correlations, seismic interp...

The Miocene Yadana carbonate platform is a major offshore gas reservoir located in the Andaman Sea (offshore Myanmar). The integration of petrographic analysis of carbonate rocks, stable isotope measurements and seismic interpretation provided new insights into the diagenetic history of the Upper Burman Limestone reservoir. The high (28%) average p...

The Messinian Salinity Crisis (MSC) is a huge outstanding succession of events that has deeply modified the Mediterranean area within a short time span at the geological scale and led to the emplacement of one of the youngest and most debated salt giant on Earth. In 2011, the Seismic atlas of the Messinian salinity crisis markers in the Mediterran...

The recognition of regional ammonite bio-events spanning the late Barremian–early Aptian interval in Provence invalidates previous chronostratigraphic models of the Urgonian carbonate platform. Based on high-resolution correlations across the Provence platform and the Vocontian Basin, this study provides a comprehensive revision of the temporal and...

Detrital zircons dated by U/Pb method in 8 samples from the Marseille-Aubagne Oligocene basin display several ages from 3.2 G to 27 Ma. Each age cluster is related to a main tectono metamorphic event that underwent around the Mediterranean basin.

Eight samples from Oligocene sedimentary rocks of the Marseille–Aubagne basins have been analysed for their detrital zircon age spectra. These age spectra provide information about the regional evolution, from Oligocene to Archaean times. The Carboniferous Variscan and the Late Cretaceous to Eocene Pyreneo-Provençal belts represent the latest main...

This work provides a new ammonite age-calibration of the rudistid limestones of the Urgonian-type Provence carbonate platform (Southeast France) based on sampling along three ∼200 km-long platform-to-basin transects and re-examination of historical collections. Ammonite key findings indicate that the first rudistid platform stage (including the Agr...

Carbonates are considered complex, heterogeneous at all scales, and unfor-tunately often poorly seismically imaged. We propose a methodology based on forward-modeling approaches to test the validity of common exploration assump-tions (e.g., chronostratigraphic value of seismic reflectors) and of geologic inter-pretations (e.g., stratigraphic correl...

This chapter aim to decipher the post Oligocene structures in the Marseille-Aubagne area.

Les dépôts quaternaires sont généralement mal datés (absolues ou paléontologiques). Les seuls niveaux datés sont les travertins et notamment ceux du Pleistocène ancien. C'est pour cette raison qu'ils servent de niveau repère temporel. Phénomènes anté-travertins Les travertins (datés de 1,7 Ma à 1 Ma) forment souvent des auvents, c'est-à-dire des ca...

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This chapter takes into account the main structures and tectonic events post Oligocene cropping out in land and on sea bottom . Witness from this period are very few and scarced. However, some data from Karsts, from seismic records and from dredged samples allow us to have a look at these geoloogical events. A study from A. Tassy (2012) linking the...

Les dépôts quaternaires sont généralement mal datés (absolues ou paléontologiques). Les seuls niveaux datés sont les travertins et notamment ceux du Pléistocène ancien. C’est pour cette raison qu’ils servent de niveau repère temporel. La stratigraphie simplifiée se compose de 3 ensembles: anté-travertins, travertins et post-travertins. Les subdivis...

Carte Géologique Terre-Mer La réalisation de la carte géologique du plateau continental de Basse-Provence repose sur l’interprétation de profils de sismique réflexion 2D et sur l’intégration d’échantillons de roches prélevés sur le fond marin par dragage et carottage et présente un essai de corrélation entre la cartographie géologique à terre et ce...

In-depth investigation of stratigraphic correlations, facies and thickness variations across the Late Barremian-Early Aptian Urgonian Provence platform (SE France) provides insight into the key role of syn-sedimentary tectonics in its architecture and evolution. In the Monts de Vaucluse domain, detailed mapping of the successive stratigraphic seque...

The acoustic response of sedimentary rocks is related to their mineralogy, porosity amount and pore type. In carbonate rocks these properties are controlled by the initial deposition parameters but often even more by the diagenetic history, due to their sensitivity to chemical processes. Diagenesis, by multiple cementation and/or dissolution phases...

During Barremian-Aptian times, the Urgonian-type Provence platform (SE France) records its maximum northward progradation from the south (Calanques Massif) to the north (Monts de Vaucluse) with the installation and spreading of three rudistid units (U2 unit sensu lato); from oldest to youngest, the Agriopleura, requieniid-monopleurid and caprinid b...

In spite of significant discoveries (e.g. in the Campos Basin-Brazil, in Cabinda-Angola, in the Uinta Basin-USA) that demonstrated the prolific oil reservoirs of the syn-rift lacustrine carbonates, little is known about the processes driving the sedimentary architecture and the factors controlling such systems. The Issirac basin (SE France) is a s...

The lateral and vertical facies variability inherent to sedimentary systems is a major issue for stratigraphic interpretation and thus for petroleum system evaluation (organic matter accumulation, extent and nature of seals and reservoirs). This is especially true in lacustrine plays, where sedimentation often reflects the complex interplay of diff...

Le plateau continental provençal est un domaine complexe situé entre l’Arc alpin et la marge continentale du basin arrière arc liguro-provençal, influencé par les variations eustatiques de grande amplitude du Néogène, en particulier durant la Crise de Salinité Messinienne. Au large des Calanques de Marseille – Cassis, le canyon de Cassidaigne incis...

The lateral and vertical facies variability inherent to sedimentary systems is a major issue for stratigraphic interpretation and thus for petroleum system evaluation (organic matter accumulation, extent and nature of seals and reservoirs). This is especially true in lacustrine plays, where sedimentation often reflects the complex interplay of diff...

The lateral and vertical facies variability inherent to sedimentary systems is a major issue for stratigraphic interpretation and thus for petroleum system evaluation (organic matter accumulation, extent and nature of seals and reservoirs). This is especially true in lacustrine plays, where sedimentation often reflects the complex interplay of diff...

Session- Sedimentary Rock Response and Failure

Les roches carbonatées sont généralement considérées comme complexes, hétérogènes et très difficilè a caractériser en termes de propriétés pétrophysique et d'architecturè a partir d'interprétations sismiques. Nous proposons une nouvelle méthode de travail intégrée de modélisation numérique couplant la sédimentologie, la diagénèse et la géophysique....

The Early Neoproterozoic Era was marked by a phase of rifting along the western margin of the Congo Craton followed by the opening of the Adamastor Ocean and by the deposition of the West Congolian Supergroup in a passive-margin setting. The West Congolian Supergroup that includes the Schisto-Calcaire Group crops out in Central Africa from SW Gabon...

The seaward extension of onshore formations and structures were previously almost unknown in Provence. The interpretation of 2D high-resolution marine seismic profiles together with the integration of sea-bottom rock samples provides new insights into the stratigraphic, structural and paleogeographic framework of pre-Messinian Salinity Crisis (MSC)...

In spite of significant discoveries (e.g. in the Campos Basin - Brazil, in Cabinda - Angola, in the Uinta Basin - USA) that demonstrated the prolific oil reservoirs of the syn-rift lacustrine carbonates, little is known about the processes driving the sedimentary architecture and the factors controlling such systems. The Tertiary Issirac sub-basin...

Carbonate rocks are generally considered to be complex, heterogeneous, and as a result very difficult to predict in terms of reservoir property, architecture from seismic interpretation. The core of our proposed scientific method is to interlock sedimentology and stratigraphy together with geophysics in a forward modelling loop. In other words to p...

The acoustic properties of carbonate reservoirs are strongly controlled by pore space architecture resulting from both depositional and diagenetic processes. As a consequence seismic inversion in highly diagenetized sedimentary systems such pre-salt non-marine carbonates requires first a quantification of the mineralogic, pore volume, pore geometry...

For the first time, depositional models of Lower Miocene carbonate systems from New Caledonia (Southwest Pacific) are proposed, on the basis of a sedimentological and paleoenvironmental study of both cores and outcrops. In the Nepoui area, two distinct stages of carbonate ramp development (Aquitanian Lower Nepoui and Burdigalian Upper Nepoui carbon...

For the first time, depositional models of Lower Miocene carbonate systems from New Caledonia (Southwest Pacific) are proposed, on the basis of a sedimentological and paleoenvironmental study of both cores and outcrops. In the Népoui area, two distinct stages of carbonate ramp development (Aquitanian Lower Népoui and Burdigalian Upper Népoui carbon...

La modélisation stratigraphique basée processus a été utilisée pour la prédiction des architectures stratigraphiques des carbonates. Cette approche de modélisation permet la réalisation de modèles de facies déterministes 2-D et 3-D à l'échelle du bassin, par simulation dans le temps et l'espace des processus sédimentaires. Les paramètres d'entrées...

The acoustic properties of carbonate reservoirs are strongly controlled by pore space architecture resulting from both depositional and diagenetic processes. The seismic interpretation and inversion of highly heterogeneous sedimentary systems such as shallow marine carbonate platforms or pre-salt non-marine carbonates requires a quantification of t...

In the Niari-Nyanga Basin, the Neoproterozoic SCI Formation of the Schisto-Calcaire Group includes a lower member (SCIa), made up of carbonates and corresponding to the Cap Carbonate that unconformably overlies the Marinoan glacial diamictite. Petrographic analysis of carbonate and terrigenous rocks from seven stratigraphic sections of the Niari-Ny...