Academic literature on the topic 'Urgonien'
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Journal articles on the topic "Urgonien"
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Monier, P., and S. Ferry. "Mise en evidence d'un haut-fond pre-urgonien dans le Barremien du mont Ventoux ; role sedimentaire de la faille de Nimes." Bulletin de la Société Géologique de France III, no. 1 (January 1, 1987): 191–93. http://dx.doi.org/10.2113/gssgfbull.iii.1.191.
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Yavarmanesh, Hoda, Seyed Hamid Vaziri, Ali Asghar Aryaei, Davood Jahani, Mohsen Pourkermani, and Ebrahim Khademi Bouriabadi. "Benthic Foraminiferal and Calcareous Algae Assemblages in the Tirgan Formation (Urgonien Facies Type) in South Flank of Ghorogh Syncline (North of Chenaran), NE Iran." Open Journal of Geology 07, no. 06 (2017): 796–805. http://dx.doi.org/10.4236/ojg.2017.76054.
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Serratrice, Jean François. "Suivi des déformations du massif rocheux sous la fondation de la pile VII du Pont du Gard." Revue Française de Géotechnique, no. 164 (2020): 2. http://dx.doi.org/10.1051/geotech/2020023.
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Le Pont du Gard est un pont-aqueduc romain construit vers 50 après JC pour assurer le franchissement des gorges du Gardon par un aqueduc d’alimentation de la ville de Nîmes (France). Le pont-aqueduc et le pont routier attenant sont édifiés sur un entablement calcaire urgonien, karstifié et fracturé. Les ouvrages enjambent le lit mineur du Gardon par une voûte qui relie les piles VII et VIII. D’un point de vue géologique, ce chenal profond constitue une incision fracturée majeure dans ce paysage rocheux. Depuis près d’un siècle, les craintes d’une déstabilisation des flancs subverticaux de ce chenal ont motivé la mise en place de protections et de dispositifs de renforcement du massif rocheux. Un appareillage constitué par deux boulons instrumentés au moyen de capteurs extensométriques et une sonde de température a été mis en place dans l’appui rocheux de la pile VII et a fait l’objet d’un suivi pendant plusieurs années. Cette auscultation révèle des déformations de la roche qui évoluent avec le régime saisonnier des températures atmosphériques. Parmi les fluctuations journalières, des petits évènements semblent pouvoir être attribués à la variation de la température de l’eau pendant certaines crues du Gardon. Un calcul approximatif de ces variations saisonnières et momentanées a été effectué au moyen d’une formulation analytique. Un premier paragraphe présente une revue bibliographique des effets thermiques dans les massifs rocheux sous l’influence des conditions climatiques. Le paragraphe suivant est consacré à la présentation du site, de ses conditions environnementales et des travaux de renforcement. Les principales caractéristiques du dispositif d’auscultation sont présentées ensuite, puis les données recueillies. Une simulation des effets de la température est proposée enfin. Les résultats permettent d’expliquer effectivement l’ordre de grandeur des déformations observées dans la roche.
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Sudar, Milan, Divna Jovanovic, Aleksandra Maran, and Svetlana Polavder. "Late Barremian-Early Aptian Urgonian Limestones from the south-eastern Kucaj Mountains (Carpatho-Balkanides, Eastern Serbia)." Annales g?ologiques de la Peninsule balkanique, no. 69 (2008): 13–30. http://dx.doi.org/10.2298/gabp0869013s.
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The newest results of sedimentological and paleontological investigations of part of the Urgonian Limestones studied in the surrounding of Boljevac on the SE slopes of the Kucaj Mts. (Carpatho-Balkanides, eastern Serbia) are presented. On two localities, near the village Faca Vajali, four types of microfacies and one subtype within the bioclastic limestones were separated. The characteristics of the depositional environments of the investigated Urgonian Limestones were studied and are discussed. At the base of the established rich microassociations of foraminifera and algae, the vertical distribution of foraminiferal species was precisely defined which enabled the determination the the age of this part of the Urgonian Limestones as Late Barremian-Early Aptian.
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Frau, Camille, Anthony J. B. Tendil, and Cyprien Lanteaume. "New Insights into the Platform-to-basin Anatomy of the Urgonian Bas-Vivarais Domain (Lower Cretaceous; SE France)." Journal of Geography, Environment and Earth Science International 27, no. 9 (July 26, 2023): 19–47. http://dx.doi.org/10.9734/jgeesi/2023/v27i9703.
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This paper offers a new contribution to our ongoing harmonization efforts concerning the chronostratigraphic model of the southern France Urgonian-type carbonate platforms, which surrounded the Vocontian Basin during the Early Cretaceous. A multi-stratigraphic approach on the classical sections of the Ardèche River gorges and the Saint-Remèze Plateau have been used for reconstructing the evolution of the Bas-Vivarais Urgonian domain along an inner-to-outer platform profile; the latter being nearly perpendicular to the eastern Vocontian platform margin. In our transect, the installation and first developments of the Urgonian platform domain occured during the early Barremian Taveraidiscus hugii and Kotetishvilia nicklesi ammonite zones. This first platform stage was interrupted at a brief emersion episode that lasted through the Nicklesia pulchella ammonite zone, and resulted in the deposition of a sedimentary wedge with limited gradual downward, basinward shift in inner platform facies. This was followed by the regional deposition of shallow-water communities dominated by corals, echinoids, and orbitolinids, which passes basinward into open-marine, ammonite-bearing marly deposits in the Saint-Remèze Plateau outcrops. This change in facies was previously referred to as the Serre de Tourre Beds (STB), and dated to the Kotetishvilia compressissima and Moutoniceras moutonianum ammonite zones. The STB are further identified to as the local sedimentary expression of the Mid-Barremian Event recording a brief warming climate pulse testified by the presence of Offneria simplex, a caprinid rudist of Caribbean origin. Above, there is a regional recovery of inner platform Urgonian facies during the early late Barremian showing a striking progradational basinward trend. The latter, and its subsequent developments are in need of investigations. Taken together, the general evolution of the Urgonian Bas-Vivarais domain shows strong similarities with the sedimentary context of the nearby Subalpine Urgonian platform during the early Barremian. The finding of common sedimentary signals is more difficult with the Provence platform domain at that time.
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Nikolov, Todor, Nikolina Ruskova, and Khrischo Khrischev. "Principles of the Lower Cretaceous lithostratigraphy in Bulgaria." Geologica Balcanica 21, no. 6 (December 30, 1991): 3–47. http://dx.doi.org/10.52321/geolbalc.21.6.3.
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The Lower Cretaceous deposits are widespread in North Bulgaria: in the Fore-Balkan, the Transitional Zone, and the Moesian Platform. The scheme of the formal lithostratigraphic units includes 37 Formations and has been elaborated for all this territory on the basis of outcrops and numerous boreholes. Four Groups (West-Balkan Carbonatic Group, Central-Balkan Flysch Group, Vraca Urgonian Group and Loveč Urgonian Group) consist of 19 Formations, and the other 18 Formations are independent. A total of 15 Members has been introduced within 9 of the Formations. The composition and interrelations of tbe lithostratigraphic units reflect the inhomogeneities and the different tendencies of the development of tile Early Cretaceous basin. The most expressive facies boundary in the west-east direction is the so-called Jablanica Line. West of it, carbonatic and marly deposits predominate in the Fore-Balkan. The carbonatic Formations belong to the West-Balkan Carbonatic Group and the Vraca Urgonian Group. The Salaš Formation is built up of clayey limestones and marls, and is widespread in the West Fore-Balkan, as well as in the western part of .the Moesian Platform. The asymmetry of the basin with a dry land as source region to the south of it, is clearly outlined to the east of the Jablanica Line, within: the Central and East Fore-Balkan and the adjacent Transitional Zone. This character of the basin controlled a facies differentiation with development of predominantly terrigeneous units in the south, and of carbonatic and marly units, to the north. This difference is expressed at its best at the lower levels of the Lower Cretaceous where units of the Central-Balkan Flysch Group are interfingering with units of the West-Balkan Carbonatic Group. The lateral transition takes place within the Transitional Zone. At higher stratigrapic levels (Hauterivian - Aptian) the asymmetry is expressed into a horizontal transition of terrigenous non-flysch deposits (Kamchija Formation and Roman Formation) with predominantly marly deposits (Gorna-Orjahovica and Trâmbeš Formations) to the north. A specific feature is the presence of Urgonian deposits in the Transitional Zone (Loveč Urgonian Group). At both sides of its development area, fans of the terrigeneous deposits of the Roman Formation are traced towards north. They are bounded to the Iskar (at the west) and Etar (to the east) depressions. Urgonian limestones occur also within the Moesian Platform in the area of Ruse (Ruse Formation). The highest (Albian) levels of the Lower Cretaceous section have been observed only in northwest Bulgaria. They are represented by the marls of the Sumer Formation, the glauconitic predominantly sandy deposits of Malo Peštene Formation, and the marls of Rabiša Formation.
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Staneva, Krasimira. "PALEONTOLOGICAL HERITAGE RESOURCES FOR TOURISM IN BULGARIA." Knowledge International Journal 28, no. 7 (December 10, 2018): 2475–78. http://dx.doi.org/10.35120/kij28072475k.
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A specific approach is needed based on a comprehensive study of both tourist resources and habitats / natural findings of fossils for develop a successful tourist product targeting customers who have interests in paleontology. The aim of the study is to evaluate the possibilities of modeling paleontological destinations in the country using leaf imprints and fossils. Fossils have their unique origins. They are formed at a certain point in geological development and in a specific geographic location. In this respect, by their genesis and common character, they are non-renewable resources of high scientific, educational, commercial and amateur value, which can be considered as a tourist resource. Two different paleontological outcrops have been studied: the Lovech Urgonian Group in Northern Bulgaria and the Smolyan Palaeogene Basin in the Western Rhodopes. Destination Lovech Urgonian Group: sampling rocks with finds of Orbitolina, Foraminifera, Algae, coral, Gastropoda, Bivalvia associated with coral reefs in the sedimentary rocks of the Lovech Urgonian Group are situated in the region of Veliko Tarnovo and Lovech. They are connected to a Urgonian paleo Sea, whose age is Low Cretaceous.Destination Smolyan Paleogene basin: different leaf imprints are found in the sedimentary rocks, representatives of the families Platanacea, Fagacaea, Lauraceae, Pinaceae, Podocarpaceae and others with different ecological characteristics. The paleo-floristic diversity shows a dynamic climatic situation through the Paleogene period in this region. The tourists accessibility to the natural revelations of paleo-reefs in North Bulgaria and of the palaeoflora outcrops in the Smolyan region is assessed. An assessment of the tourist infrastructure, the existence of geological landscapes, panoramic views and paleontological museum expositions has been made. The specialized paleontological museums in the country are limited in number. And the offering of paleontological tourist destinations is the opportunity for tourists with interests in the natural history and the live evolution to find a suitable form for satisfying their special interests.
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Staneva, Krasimira. "PALEONTOLOGICAL HERITAGE RESOURCES FOR TOURISM IN BULGARIA." Knowledge International Journal 28, no. 7 (December 10, 2018): 2475–78. http://dx.doi.org/10.35120/kij29082475k.
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A specific approach is needed based on a comprehensive study of both tourist resources and habitats / natural findings of fossils for develop a successful tourist product targeting customers who have interests in paleontology. The aim of the study is to evaluate the possibilities of modeling paleontological destinations in the country using leaf imprints and fossils. Fossils have their unique origins. They are formed at a certain point in geological development and in a specific geographic location. In this respect, by their genesis and common character, they are non-renewable resources of high scientific, educational, commercial and amateur value, which can be considered as a tourist resource. Two different paleontological outcrops have been studied: the Lovech Urgonian Group in Northern Bulgaria and the Smolyan Palaeogene Basin in the Western Rhodopes. Destination Lovech Urgonian Group: sampling rocks with finds of Orbitolina, Foraminifera, Algae, coral, Gastropoda, Bivalvia associated with coral reefs in the sedimentary rocks of the Lovech Urgonian Group are situated in the region of Veliko Tarnovo and Lovech. They are connected to a Urgonian paleo Sea, whose age is Low Cretaceous.Destination Smolyan Paleogene basin: different leaf imprints are found in the sedimentary rocks, representatives of the families Platanacea, Fagacaea, Lauraceae, Pinaceae, Podocarpaceae and others with different ecological characteristics. The paleo-floristic diversity shows a dynamic climatic situation through the Paleogene period in this region. The tourists accessibility to the natural revelations of paleo-reefs in North Bulgaria and of the palaeoflora outcrops in the Smolyan region is assessed. An assessment of the tourist infrastructure, the existence of geological landscapes, panoramic views and paleontological museum expositions has been made. The specialized paleontological museums in the country are limited in number. And the offering of paleontological tourist destinations is the opportunity for tourists with interests in the natural history and the live evolution to find a suitable form for satisfying their special interests.
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Schlagintweit, Felix. "The late Berriasian early evolutionary burst of the Orbitolinidae: New insights into taxonomy, origin, diversification and phylogeny of the family based on data from eastern Serbia." Carnets de géologie (Notebooks on geology) 21, no. 15 (August 17, 2021): 343–82. http://dx.doi.org/10.2110/carnets.2021.2115.
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New data from the Carpatho-Balkanides of eastern Serbia evidence the more or less near-simultaneous "explosive" first appearances of several genera of the Orbitolinidae in the late Berriasian. Most of the observed taxa were previously recorded from strata not older than the Late Hauterivian (= classical Urgonian of southeastern France), evidence that these ages refer to local first appearance data. The diversified assemblage from Serbia includes representatives of the subfamilies Dictyoconinae: genera Cribellopsis ARNAUD-VANNEAU, Montseciella CHERCHI & SCHROEDER, Orbitolinopsis HENSON, Urgonina FOURY & MOULLADE, Valserina SCHROEDER & CONRAD, Vanneauina SCHLAGINTWEIT, and Dictyorbitolininae: genus Paracoskinolina MOULLADE. Representatives of the Orbitolininae (with complex embryo) have not been observed. They appeared later in the fossil record seemingly during the Late Hauterivian-early Barremian. All together 17 taxa are reported, of which three in open nomenclature. A new species is described as Cribellopsis sudari n. sp. The majority of the observed species display medium- to high-conical tests and a rather simple exoskeleton lacking horizontal partitions (rafters). The new data contradict a phylogenetic evolution of distinct genera displaying different internal test structures one after the other in time (= ancestor-descendant relationships) as postulated by some authors. The explosive radiation ("early burst") of the Orbitolinidae in the late Berriasian is accompanied by the first appearance date of several other large benthic foraminifera including mostly agglutinating (e.g., Ammocycloloculina, Choffatella, Drevennia, Eclusia, Moulladella, Pfenderina, Pseudotextulariella) but also complex porcelaneous taxa (Pavlovcevina) providing evidence for a bioevent in this time period that exceeds the number of taxa originating in the previous (Tithonian) and the following stage (Valanginian). The early evolutionary history of the Orbitolinidae can be considered a classical example of adaptive radiation within the clade's history.
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Prosorovsky, V. A. "The Urgonian facies of Central Asia." Cretaceous Research 11, no. 3 (September 1990): 253–60. http://dx.doi.org/10.1016/s0195-6671(05)80010-2.
Full textDissertations / Theses on the topic "Urgonien"
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Cochard, Jean. "Analyse des propriétés réservoirs d'une série carbonatée microporeuse fracturée : approches multi-échelle sédimentologiques, diagénétiques et mécaniques intégrées." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0568/document.
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Les calcaires sont des roches sensibles aux phénomènes physiques et chimiques qui peuvent les dissoudre, les cimenter ou les fracturer. Dans ce cas, les propriétés des calcaires vont évoluer en fonction de ces différents processus qui varient dans le temps et dans l’espace. Or les réservoirs carbonatés peuvent s’étendre sur plusieurs centaines de kilomètres. Afin d’exploiter ces réservoirs géologiques (ressources en eau, gaz ou pétrole), il est donc nécessaire de caractériser en 3 dimensions leurs propriétés (porosité, perméabilité) ainsi que les hétérogénéités géologiques ou tectoniques, qui peuvent modifier la géométrie du réservoir ou ses propriétés. L’acquisition de données locales (affleurements, forages), réparties sur la totalité du réservoir, pose la question de leurs représentativités projetées sur l’ensemble du volume de roche mais aussi de leurs distributions entre les points d’acquisitions qui sont espacés de plusieurs kilomètres. Cette thèse propose d’étudier les propriétés des calcaires Urgoniens (d’âge Barrémien supérieur – Aptien inférieur) situés en Provence, analogues aux calcaires des réservoirs d’hydrocarbures présents au Moyen-Orient. Trois sites comportant différentes échelles sont étudiés afin de caractériser cette série carbonatée. L’étude propose ensuite des règles géologiques dans le but d’extrapoler les mesures réalisées sur des échantillons d’unités centimétriques à l’échelle hectométriqueCarbonates are sensitive to physical and chemical processes which can dissolve, cement or fracturing them. In this case, the carbonate properties evolve according to these different changes that vary in time and space. Carbonated reservoirs can extend for hundreds of kilometres. To prospect these geological reservoirs (water, gas or oil resources), it’s therefore necessary to characterize in 3 dimensions their properties (porosity, permeability), as well as geological and structural heterogeneities which can modify the basin geometry or the reservoir properties. The acquisition of local data (outcrops, boreholes) compared to the properties distributed at field scale ponder their representativeness at multi-kilometres scale but also their distribution between the acquisition area. This thesis proposes to study the properties of Urgonian limestones (Upper Barremian - Lower Aptian) located in Provence, analogue of Middle East hydrocarbon reservoirs. Three sites with different scales are studied to characterize this carbonate series. Additionally, this study proposes geological rules to upscale the measurements made on centimetric samples to hectometric scale
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Bastide, Fanny. "Synthèse de l'évolution de la plateforme urgonienne (Barrémien tardif à aptien précoce) du Sud-Est de la France : Faciès, micropaléontologie, géochimie, géométries, paléotectonique et géomodélisation." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU005/document.
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Au Crétacé inférieur, l'intense activité magmatique due à la dislocation du super-continent Pangée influence fortement les conditions environnementales globales. Au Barrémien terminal et Aptien basal, période géologique dont fait l'objet cette étude, le bassin Vocontien, puis Bédoulien, recouvre le Sud-Est de la France, sous un climat chaud et humide. Sur les bordures de ces bassins, des plateformes carbonatées se mettent en place. Les sédiments qui se déposent sur ces plateformes sont à l'origine de la formation urgonienne. Afin d'étudier cette formation, une charte biostratigraphique, principalement basée sur les Orbitolinidés, et un modèle de faciès ont été développés. Les assemblages faunistiques, la succession des faciès, les observations de terrain ainsi que l'étude de signaux géochimiques ont permis le découpage séquentiel de la série urgonienne le long de 54 coupes et puis, répartis sur l'ensemble du Sud-Est de la France. Les corrélations induites par cette étude stratigraphique ont mis en évidence d'importantes variations d'épaisseur et d'environnements de dépôt au sein même de la plateforme urgonienne. Ces variations sont expliquées par le jeu de failles syn-sédimentaires qui ont compartimentées la plateforme urgonienne en blocs. Sur la bordure sud du bassin Vocontien, ces failles d'orientation N30° et N110° délimitent six blocs basculés. Au sommet du Barrémien terminal, la subsidence des blocs situés le plus au sud s'amplifie jusqu'à provoquer l'ouverture du bassin de la Bédoule au sud du secteur d'étude. Cette théorie d'évolution a ensuite été testée par l'élaboration d'un modèle numérique en trois dimensions de l'Urgonien du Sud-Est de la France. Sa cohérence avec les données acquises tout au long de cette étude d'une part, et sa cohérence géométrique d'autre part, valide les théories avancées. Des analogues de l'Urgonien sont répartis dans le monde entier et notamment au Moyen-Orient où ils représentent d'importants réservoirs pétroliers. Être capable de caractériser les facteurs ayant influencé l'architecture de l'Urgonien du Sud-Est de la France permet par la suite une meilleure exploitation de ses ressources énergétiquesDuring the Early Cretaceous epoch, intensive magmatic activity due to the dislocation of the super-continent Pangaea, highly influenced global environmental conditions, which were characterized by a warm and generally humic climate. In this context, carbonate platforms were important in tropical and subtropical shallow-water regions, and especially during the late Barremian and early Aptian, platform carbonates of so-called Urgonian affinity are widespread. In southeastern France, the Urgonian platform was part of the northern Tethyan margin and bordered the Vocontian and the Bedoulian basins. The goal of this thesis was the systematic study of the Urgonian Formation in this region, and in order to achieve this goal, a biostratigraphic chart and a facies model were developed. The faunistic assemblages, the facies succession, the field observations and the study of geochemical signals lead to a sequential subdivision of the Urgonian series along 54 sections and wells allocated in five different regions in southeastern France (Gard, Ardèche, Vercors, Vaucluse and Provence). Correlations from this stratigraphic study highlight important variations in thickness and depositional environments of the Urgonian series. These variations are explained by relative movements induced by syn-sedimentary faults, which divided the Urgonian platforms into blocks. On the southern border of the Vocontian basin, these faults, oriented N30° and N110°, delineate six tilted blocks. At the top of the upper Barremian carbonates, subsidence of the two southern blocks accelerated leading to the opening of the Bedoulian basin. The reconstruction of the sequence-stratigraphic and paleoenvironmental evolution of the Urgonian platforms was then tested by the construction of a 3D numerical model of the Urgonian formation of southeastern France. Firstly, its consistency with the data collected during this study, and secondly, its geometrical coherence validate the proposed theory. Urgonian analogs exist all over the world and particularly in Middle East where they constitute important oil reservoirs. The exact reconstruction of the major factors, which influenced the architecture of these formations, will allow for a better exploitation of these energy resources
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Thomas, Audrey. "Géométrie de la progradation urgonienne et propriétés pétrophysiques des différents faciès (Vercors, SE France)." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0360.
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Des interprétations controversées concernant la géométrie interne et la direction de la progradation au sein de la plate-forme carbonatée urgonienne du Vercors sont apparues au cours des dernières décennies. Afin de tester ces interprétations, deux transversales principales de coupes corrélées ont été construites, un transversale Nord-Sud suivant la falaise orientale du plateau, et une transversale orientée nord-est à sud-ouest le long de la falaise méridionale. Les résultats soutiennent une progradation centripète du nord vers le sud de l'axe du Plateau, mais globalement orientée vers le sud, en accord avec l'interprétation de Clavel et al. (2014) et les résultats partiels antérieurs de Richet (2011). La progradation nord-sud le long de la falaise orientale est apparente, car le cœur de la plate-forme carbonatée était probablement situé sur les Massifs Cristallins Externes (Belledonne), qui alimentaient un étalement global dominant vers le sud-ouest. L'analyse des panoramas photographiques au nord dans les massifs de la Chartreuse et des Bauges soutient également une progradation globale nord-sud, sur la base des géométries sédimentaires. D'un point de vue stratigraphique, deux unités de calcarénites de l'Hauterivien supérieur (HS1 et HS2 uniquement présentes au nord) et six unités de calcarénites et de carbonates à rudistes du Barrémien à l'Aptien inférieur (U1 à U6) ont été définies. Sur la base de nouvelles découvertes d'ammonites avec l'aide d'A. Pictet, il apparaît que la succession urgonienne est principalement d'âge barrémien. D'un point de vue sédimentologique et stratigraphique, les deux transversales soutiennent l'interprétation de deux systèmes carbonatés successifs (un système calcarénitique marginal suivi d'un faciès d'inondation de calcaires à rudistes) au sein des séquences urgoniennes, un modèle encadré par D. Quesne (1998), en opposition avec le modèle de Masse (1976) qui est basé sur la contemporanéités de tous les faciès dans le système de dépôt. Des analyses pétrophysiques ont été réalisées dans la plupart des coupes lithostratigraphiques afin de caractériser le potentiel réservoir de l'ensemble de la plate-forme carbonatée du Vercors. Des valeurs de porosité et de perméabilité très faibles, sur l'ensemble de l'affleurement, permettent de le classer comme un analogue de roche réservoir carbonatée de type « tight carbonate »Controversial interpretations about the internal geometry and direction of progradation within the Vercors' urgonian carbonate platform have arisen over the past decades. In order to test these interpretations two main transects of correlated sections have been constructed, a N-S one following the eastern cliff of the Plateau, and a NE-SW oriented one along its southern cliff. Results support a centripetal progradation toward N-S the axis of the Plateau, but overally oriented to the south, in accordence with the Clavel et al. interpretation (2014) and the earlier partial results of Richet (2011). The N-S progradation along the eastern cliff is an apparent one, as the core of the carbonate platform was likely located on the External Cristalline Massifs (Belledonne), which fed a dominant overall spreading to the SW. Analysis of picture panoramas to the north in the Chartreuse and Bauges massifs also support an overall N-S progradation, based on stratal geometries. On a stratigraphic point of view, two upper Hauterivian calcarenite units (HS1 and HS2 only present in the north) and six Barremian to lower Aptian calcarenite and rudistids carbonates units (U1 to U6) have been defined. Based on new ammonite findings with the help of A. Pictet, it appears that the urgonian succession is mostly of Barremian age. On a sedimentologic and sequence stratigraphic point of view, both transects support the interpretation of two successive carbonate systems (a marginal calcarenite system followed by a flooding facies of rudist carbonates) within urgonian sequences, a model framed by D. Quesne (1998), in opposition with the model of Masse (1976) which is based on the coevalty of all facies in the depositional system. Petrophysical analyses have been performed in most sections in order to provide a strong correlated caracterisation of the urgonian limestones in Vercors. Very low porosity and low permeability values on the whole outcrop caracterise this analogue as a tight carbonate reservoir rock and may improve the knowledge and modeling of this type of reservoir
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Planteblat, Caroline. "Modélisation par automate cellulaire des phénomènes diagénétiques des plateformes carbonatées. Calibration et paramétrisation à partir de deux cas d'études : l'Urgonien du Vercors (Crétacé inférieur, SE France) et les Calcaires Gris du Mont Compomolon (Lias, NE Italie)." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00934442.
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Une fois déposé, un sédiment est affecté au cours de son enfouissement par un ensemble de processus, regroupé sous le terme diagenèse, le transformant parfois légèrement ou bien suffisamment pour le rendre méconnaissable. Ces modifications ont des conséquences sur les propriétés pétrophysiques qui peuvent être positives ou négatives, c'est-à-dire les améliorer ou bien les détériorer. Une voie alternative de représentation numérique des processus, affranchie de l'utilisation des réactions physico-chimiques, a été adoptée et développée en mimant le déplacement du ou des fluides diagénétiques. Cette méthode s'appuie sur le principe d'un automate cellulaire et permet de simplifier les phénomènes sans sacrifier le résultat et permet de représenter les phénomènes diagénétiques à une échelle fine. Les paramètres sont essentiellement numériques ou mathématiques et nécessitent d'être mieux compris et renseignés à partir de données réelles issues d'études d'affleurements et du travail analytique effectué. La représentation des phénomènes de dolomitisation de faible profondeur suivie d'une phase de dédolomitisation a été dans un premier temps effectuée. Le secteur concerne une portion de la série carbonatée de l'Urgonien (Barrémien-Aptien), localisée dans le massif du Vercors en France. Ce travail a été réalisé à l'échelle de la section afin de reproduire les géométries complexes associées aux phénomènes diagénétiques et de respecter les proportions mesurées en dolomite. De plus, la dolomitisation a été simulée selon trois modèles d'écoulement. En effet, la dédolomitisation étant omniprésente, plusieurs hypothèses sur le mécanisme de dolomitisation ont été énoncées et testées. Plusieurs phases de dolomitisation per ascensum ont été également simulées sur des séries du Lias appartenant aux formations du groupe des Calcaire Gris, localisées au nord-est de l'Italie. Ces fluides diagénétiques empruntent le réseau de fracturation comme vecteur et affectent préférentiellement les lithologies les plus micritisées. Cette étude a permis de mettre en évidence la propagation des phénomènes à l'échelle de l'affleurement.
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Tendil, Anthony. "Contrôles tectoniques, climatiques et paléogéographiques sur l'architecture stratigraphique de la plateforme carbonatée urgonienne provençale (France) : approches sédimentologiques, géochimiques et numériques intégrées." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0230.
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Les systèmes carbonatés, anciens et actuels, se retrouvent au coeur d’enjeux économiques et sociétaux majeurs, notamment dans le domaine énergétique où ils représentent une part considérable des réserves prouvées de gaz et de pétrole. La présente thèse se focalise sur la plate-forme urgonienne Provençale (Barrémien supérieur–Aptien inférieur), analogue d’affleurement prouvé de réservoirs carbonatés du Moyen-Orient. Près d’une trentaine de coupes stratigraphiques, incluant notamment deux forages réalisés dans le cadre de ce travail, ont été considérées sur l’ensemble du domaine Provençal. La reconnaissance de surfaces d’émersion et d’ennoiement contraintes biostratigraphiquement permet d’appréhender régionalement l’évolution paléogéographique et l’architecture stratigraphique. Plusieurs phases de progradation en direction des bassins adjacents, entrecoupées d’épisodes de perturbation de la production carbonatée, sont identifiées en Provence. Un scénario stratigraphique comparable est proposé pour les plates-formes urgoniennes du Pourtour Vocontien. En Provence, la compartimentation réservoir de la plate-forme urgonienne est principalement contrôlée par le contexte séquentiel des dépôts qui induit une dualité entre des carbonates cimentés précocement et ceux préservant un certain espace poreux. Les règles géologiques définies dans cette étude 1) servent à la réalisation d’un modèle numérique 3-D destiné aux simulations des écoulements à l’échelle de l’aquifère karstique de Fontaine-de-Vaucluse, dont le débit à l’exutoire est classé au cinquième rang mondial, et 2) aident à la prédiction des hétérogénéités sédimentaires et pétrophysiques des systèmes carbonatésThe analysis of carbonate systems is at the heart of major economic and societal challenges, especially in the energy field since they represent significant oil and gas reserves. The present thesis focuses on the Urgonian Provence platform (upper Barremian–lower Aptian interval) which is considered as a valid outcrop analogue of middle East carbonate reservoirs. About thirty stratigraphic sections, including newly acquired cores, are considered throughout the Provence domain. The recognition of biostratigraphically constrained exposure and drowning surfaces enables us to restore the regional palaeogeographic evolution along with the stratigraphic architecture. Several phases of platform progradation toward the adjacent basins, interrupted by episodes of changes in carbonate production, are identified in Provence. A comparable stratigraphic scenario is proposed for the peri-Vocontian Urgonian platforms. In Provence, the reservoir compartmentalisation of the Urgonian platform is mainly controlled by the sequence stratigraphic context that induced a distinction between early cemented carbonates and those preserving part of their original porosity. The geological rules provided in this study 1) are implemented into a 3-D numerical model intended for fluid-flow simulations at the scale of the Fontaine-de-Vaucluse karstic aquifer, whose karst spring is the fifth largest in the world, and 2) help in predicting the sedimentary and petrophysical heterogeneities of carbonate systems
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Poprawski, Yohann. "La marge Nord du Fossé Basque à l'Albien : architecture sédimentaire et diapirisme dans un contexte décrochant (Pays Basque, Espagne)." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENU009.
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L'objectif initial de cette thèse consistait à fournir un analogue de terrain de réservoirs pétroliers avec un modèle 3D des structures et de l'architecture des sédiments développés sur la bordure d'un basin étroit et confiné. La zone d'étude, située entre Bakio et Plenzia (Pays Basque, Espagne), appartient au fossé Basque, souvent interprété comme un basin en pull-apart. Nous avons focalisé ce travail sur le diapir de Bakio, sur les modalités de la montée du sel, sa chronologie et sur l'impact de la tectonique salifère sur sédimentation et la déformation des sédiments environnants. Un éventail sédimentaire composé de dépôts albiens, avec un amincissement vers le diapir montre la monté synsédimentaire du sel. Nous démontré l'existence d'une première phase de montée du sel réactive puis une seconde phase passive. La phase réactive est expliquée par l'extension régionale. Durand le stade passive, des séquences halokinetiques, qui résultent de variations entre la monté du sel et le taux de sédimentation, ont été formées. Nos données montre qu'une grande partie de la déformation est due à la rotation des flancs du diapir et non à un cisaillement significatif induit par la montée su sel. Nous avons aussi concentré ce travail sur les structures albiennes de notre zone d'étude. La comparaison avec l'ensemble du Bassin Basco Cantabrien montre deux stades d'activation des failles. De l'Aptien à l'Albien moyen, les nombreuses failles orientées NE-SO, largement distribuées,contrôlaient les plates formes urgoniennes et les fossés marneux associés. Quelques failles majeures héritées, orientées NO-SE contrôlaient aussi les dépocentres surtout dans la partie centrale du Basin Basco-Cantabrien. Ce premier stage est interprété comme le résultat d'un extension NO-SE. De l'Albien moyen à supérieur, la déformation était localisée essentiellement le long de la faille Guernika-Elgoibar, orientée NO-SE, qui contrôle un bassin asymétriques, étroit et allongé remplis par les Flyschs Noirs. Durant le second stage, les dépocentres du Flysch Noir sont interprétés comme des bassins en transtension et non en pull-apart, car une seule faille majeure contrôlait ces basins asymétriquesThe initial purpose of this thesis was to provide a field analogue for petroleum reservoirs with a 3D model of the main structures and of the architecture of deposits developed on the border of a narrow and confined basin. The study area, located between Bakio and Plenzia (Basque Country, Spain), belongs to the Basque Trough, commonly interpreted as a pull-apart basin. We focused on the Bakio diapir, which allows a discussion of the modalities of salt rising, its chronology and of the impacts of salt on the overburden deformation and on sedimentation. A well exposed wedge-shaped structure composed of Albian deposits, with thinning toward the diapir documents synsedimentary salt rising. We showed that the diapir rose firstly as a reactive diapir in response to regional extension and then as a passive diapir. During the passive stage, halokinetic sequences developed, induced by variations of the ratio between net salt rising and net sedimentation rate. All our data from the Bakio diapir show that an important part of deformation is related to diapir flank rotation and not to significant shear associated with salt rising. We also focused on the Albian structural geology in our study area. The comparison of the local Albian fault system with faults from the whole Basque-Cantabrian Basin emphasizes two stages of faults activity. From Aptian to Early-Middle Albian, widely distributed NE-SW striking faults controlled the development of the Urgonian platforms and associated marly troughs. Some major inherited NW-SE striking faults also controlled the localization of depocenters, especially in the central part of the Basque-Cantabrian Basin. The first stage is assumed to result of a NW-SE extension. From Middle to Late Albian, the deformation localized mainly along the Gernika-Elgoibar fault, striking NW-SE, and controlled the formation of a narrow and elongated asymmetric basin developed, filled by Black Flysch units. During this second stage, Black Flysch depocenter are interpreted to form in transtensional setting and cannot be interpreted as pull-apart basins, as only one major fault controlled asymmetric basins
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Pascal, André. "Les Systèmes biosédimentaires urgoniens Aptien-Albien sur la marge Nord-ibérique /." Dijon : Institut des sciences de la terre, 1985. http://catalogue.bnf.fr/ark:/12148/cb34840930j.
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Bernaus, Josep-Maria. "L'Urgonien du bassin d'Organyà (NE de l'Espagne) : micropaléontologie, sédimentologie et stratigraphie séquentielle." Grenoble 1, 1998. https://tel.archives-ouvertes.fr/tel-00723708.
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L'étude des dépôts de l'Urgonien du Bassin d'Organyà a permis de caractériser les différentes séquences de dépôt superposées, limitées dans quelques cas par des surfaces émersives et érosives. L'étude sédimentologique et faciologique de détail a conduit à l'élaboration d'un modèle d'agencement de micro faciès et a permis également de mieux comprendre l'évolution verticale des milieux de dépôt du bassin étudié. L'inventaire micropaléontologique de la faune et de la flore présentes dans cet intervalle a été entrepris. Les données micropaléontologiques et sédimentologiques ont permis de caractériser précisément 6 séquences de dépôt. La comparaison de la répartition de la faune et la flore pyrénéennes avec celle des chaînes subalpines permet d'attribuer la première séquence à un âge Valanginien (séquence OR-0); les séquences OR-l, OR-2 et OR-3 caractérisent le Barrémien supérieur et les deux dernières séquences, OR-4 et OR-5, sont datées de l'Aptien inférieur. Quatre épisodes paléoenvironnementaux ont été identifiés dans cet intervalle stratigraphique : -le premier se compose d'un niveau calcaréo-marneux avec des influences terrigènes (séquence OR-0); -le second est formé par de niveaux carbonatés d'environnement de bordure de plate-forme (OR-l) et de lagon interne (faciès à rudistes et à orbitolinidés) (OR-2) ; -le troisième épisode se compose de grands dépôts de calcaires d'eau douce/eau saumâtre (calcaires à charophytes), très bien représentés dans les séquences OR-3 et OR-4; -le quatrième épisode marque l'interruption brutale de la sédimentation carbonatée et la fin des dépôts urgoniens dans ce bassin; cet épisode est caractérisé par un important dépôt de calcaires à foraminifères planctoniques très riches en matière organique qui apparaissaient déjà dans la séquence OR-4 et deviennent dominants dans la dernière séquence, OR-5. Une étude quantitative détaillée de la microfaune nous a permis de mettre en évidence des cortèges sédimentaires dans les séquences de dépôt ce qui n'était pas possible avec une étude normale des faciès. Deux périodes anoxiques ont été mises clairement en évidence à la fin des dépôts urgoniens et corrélées avec un des événements anoxiques mondiaux (OAE 1a)The study of the Urgonian sediments of Organyà Basin has permitted to characterise the sedimentary sequences deposited in this basin. Detailed sedimentary and facies studies allow us to propose a microfacies depositional model used for a good knowledge of the vertical evolution of sedimentary environment. An exhaustive inventory of microfauna and microflora has been presented. Owning the micropaleontological and sedimentologieal data 6 sedimentary sequences have identified. In comparison with the foraminifera distribution well known in other alpine basins, the OR-0 sequence is dated from Valanginian age, the OR-1, OR-2 and OR-3 sequences as Upper Barremian and the last ones (OR-4 and OR-5 sequences) as Lower Aptian. Four main types of sediments has been identified: - silty limestone with terrigenous influence in the OR-0 sequence; - shelf-margin and inner platform limestone in the OR-1 sequence and OR-2 sequence respectively; - charophytes limestone at the base of OR-3 and OR-4 sequences and, - planctonik foraminifera and rich anoxie lime stone in the OR-4 and OR-5 sequences. Sequence stratigraphy of this region is now detailed, due to quantification of the microfauna, specially useful to distinguish the different systems tracts. Two anoxic episodes are observed at the top of the Urgonian sediments; they are correlated with one of the global Cretaceous Oceanic Anoxie Events (OAE 1a)
El estudio de los sedimentos "Urgonienses" de la Cuenca de Organyà ha permitido caracterizar las diferentes scuencias deposicionales existentes. El estudio sedimentológico y de facies de detalle nos ha conducido a la elaboración de un modelo de deposición de microfacies y, también, ha permitidocomprender la evolución vertical de los diferentes ambiantes de deposición de la cuenca esudiada. . .
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Hunt, David William. "Application of sequence stratigraphic concepts to the Cretaceous Urgonian carbonate platform, southeast France." Thesis, Durham University, 1992. http://etheses.dur.ac.uk/6133/.
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Carbonate platforms are increasingly being studied using sequence stratigraphic concepts and models borrowed from the study of siliciclastic shelves in passive margin settings. The direct transposition of the stratigraphic model for a siliciclastic shelf to its carbonate counterpart, the carbonate shelf, assumes that the two systems respond in a very similar way to changes of relative sea-level, the interpreted major control upon depositional stacking patterns. Current models depicting the sequence stratigraphic evolution of carbonate shelves are and have been frequently applied without regard for the differences between the siliciclastic and carbonate shelf depositional systems. It is the purpose of this study to test the current sequence stratigraphic model and its assumptions for a carbonate shelf. Carbonate shelves do differ quite fundamentally from their siliciclastic equivalents. The carbonate shelf has the capacity to respond in quite different ways to changes in relative sea-level, compared to siliciclastic systems, as a result of the strong physio-chemical control upon carbonate sedimentation and the potential high rates of carbonate production at the shelf margin in comparison to rates of relative sea-level rise. Carbonate sedimentation rates are also differential across a shelf and highly sensitive to slight environmental' changes such as nutrient upwelling and temperature increases or decreases. This can lead to abrupt changes of sedimentation rate not necessarily related to changes of relative sea-level. Because of these differences carbonate shelves can develop stratal patterns similar to siliciclastic settings, but in the majority of cases they are very different. In direct contrast to siliciclastic systems the lowstand systems tract is normally impoverished on the flanks of carbonate shelves. Two different end-members of lowstand sedimentation are distinguished for carbonate shelves and these reflect the inherited morphology of the slope: low angle, mud-dominated slopes are characterized by basin-floor slides and debrites during times of falling relative sea-level and by a relatively large volume autochthonous slope wedge. In direct contrast, high angle slopes are characterized by basin-floor megabreccias and volumetrically very small or even absent autochthonous slope wedges. The carbonate transgressive systems tract can also develop a wide variety of stratal patterns, a reflection of the often complex interplay of variable sedimentation rates and rates of relative sea-level rise. Two different types of geometric stacking pattern are distinguished: type 1 geometries, developed when sedimentation rates are less than rates of relative sea-level rise, and type 2 geometries formed when sedimentation rates are equal to or greater than rates of relative sea-level rise. The highstand systems tract is the time of maximum carbonate production potential and is normally associated with rapid basinwards progradation. For the highstand systems tract two different types of foreslope progradation are distinguished, slope aprons and toe-of-slope aprons. These differences between carbonate and siliciclastic depositional models suggest that simple application of the previously published models can lead to incorrect interpretation of systems tracts, sequences and therefore relative sea-level curves. Sequence stratigraphic models and concepts are tested by application to the spectacular seismic scale exposures of the mid-Cretaceous Urgonian platform, SE France. The platform is divided into a lower regressive' part, the Glandasse Formation and an upper 'transgressive' part the Urgonian Limestone Formation. These are dominated by progradational outer-shelf grainstone facies and aggradational shelf-lagoonal facies respectively. Criteria are developed to identify key surfaces and stratal packages upon the Urgonian platform. On the shelf sequence boundaries are readily defined and are marked by sub-aerial exposure surfaces associated with meteoric diagenesis. Lowstand sedimentation is generally absent, but can be represented by lacustrine facies. Strong erosional truncation is only developed on the shelf if siliciclastics are introduced during lowstand of sea-level. Thus, the transgressive and highstand systems tracts dominate shelf sedimentation but can only be distinguished if a clear flooding surface is developed, and this is not always the case. On the slope large-scale erosional surfaces developed by sedimentary bypass and/or slope collapse can develop at any stage of a sequence and make identification of the sequence boundary more difficult Similarly, on the basin-floor allochthonous debris derived from slope collapse and/or bypassing is not restricted to times of falling relative sea-level. From the criteria developed for identification of key stral surfaces and packages a sequence stratigraphy for the Urgonian platform is built This is placed within the time scale of Haq et al. (1987), and relative sea-level curves for the platform are constructed. These are compared to the eustatic sea-level charts from which they differ significantly. Minimum aggradation rates are also compared to other well known ancient carbonate platforms, from which the Urgonian is shown to have very high sedimentation rates.
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Spence, Guy Hamilton. "The Cretaceous Urgonian Carbonate Platform of the NW Subalpine Chains of SE France : a sequence stratigraphic approach." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5450/.
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This study interprets the stratigraphic evolution of the mid-Cretaceous Urgonian Carbonate Platform sensu lato exposed in the northwestern Subalpine Chains of southeast France within a framework of dynamic environmental and climatic changes including relative sea-level fluctuations. Macroscopic observations of stratal geometries, especially stratal packaging within the succession revealed by differential weathering patterns have been integrated with the petrographic examination of limestone samples to assist in the interpretation of the carbonate succession. Seven hundred and twenty-eight rock samples were examined under the microscope as either thin sections or acetate peels and twenty five component parameters were used to define sediment composition within the data set. New and emerging analytical techniques have been used to interpret these data rather than the more traditional static fixed facies belts. Sequence stratigraphic concepts have been used to interpret platform evolution within the context of relative sea-level changes. In order to define microfacies and identify underlying environmental gradients computer optimized Jaccard's similarity coefficients matrices have been calculated between samples and component parameters using two computer programs SedUtil and JaccMat run on an IBM compatible Pentium personal computer. Computer optimized Jaccard's similarity coefficients similarity matrices are able to model both gradational and abrupt changes in facies composition in response to palaeogeographic and stratigraphic controls. Computer optimized similarity matrices between limestone compositional parameters from a series of logs show differences in the spatial and temporal nature of variations in sediment composition in response to environmental changes across the platform. The contrasts between the configurations of optimized similarity matrices are interpreted as indicating a palaeogeography at the beginning of the Urgonian characterised by a more strongly subsident basin to the southeast of the field area connected to the topographically-higher, tectonically more stable parts of the platform by low-angle slopes; the basin was eliminated by the end of the Urgonian. In addition optimized similarity matrices calculated between samples have been used to assist in defining eight-eight conventional microfacies assemblages which are described and illustrated using photomicrographs and pie-diagrams of modal composition. Despite the apparently conformable nature of the succession as observed in individual exposures, changes in the stratigraphy of the Urgonian platform sensu lata as traced along two southwest-northeast transects constructed through the Aravis and Bargy Chains indicate the existence of a low-angle distally steepened ramp topography at the top of the Hauterivian basement that sloped into a more strongly subsident basin. The Urgonian succession is divided into two third-order depositional sequences termed Depositional Sequence 1 and 2. In Depositional Sequence 1 all three systems tract are developed whereas Depositional Sequence 2 only contains transgressive and highstand systems tracts. The lowstand systems tract of Depositional Sequence 1 preserved in the southwest of the Aravis and Bargy Subalpine Chains is volumetrically significant, being dominated by hemipelagic deposits that shallow laterally to intertidal deposits to the northeast and also contain calciturbidites and two spectacular megabrecciahorizons. The two megabreccia horizons are interpreted as thin surficial collapse horizons formed by net extension on a very-low angle, previously kinematically stable slope, during fourth-fifth order relative sea-level falls. The lower sequence boundary of Depositional Sequence 1 passes laterally from being conformable in the southwest (deep-water basin) to being a major unconformity in the northeast ('inner' platform). However, this sequence boundary appears planar and concordantly bedded in the main and it is only in the northeastern Bargy Chain that it is observed as a erosional angular unconformity. The top of Depositional Sequence 1 is marked by the end of rudist lagoonal sediments and the deposition of beach facies which contain evidence of grain dissolution, overlain by Orbitolinidae foraminiferal rich horizons. By the top of Depositional Sequence 1 the low angle slope to the southwest had been totally subdued by sediment infilling and/or a decrease in the rate of differential subsidence. Depositional Sequence 1 was terminated by a comparatively minor relative sea-level fall followed by an immediate return to a major third-order relative sea-level rise and the basal transgressive deposits of Depositional 2. Depositional Sequence 2 re-establishes rudist sediment lagoonal deposition on the platform. It is often difficult to differentiate the transgressive and highstand systems tracts from one another in Depositional Sequence 2 and the boundary may be transitional. The upper sequence boundary of Depositional Sequence 2 is marked by a subaerial karst overlain by phosphatic greensands interpreted as reflecting a major relative sea-level fall and subsequent reflooding. Factors unique to carbonate depositional systems and their implications for the use of 'traditional' sequence stratigraphic models for carbonates are also discussed.
Book chapters on the topic "Urgonien"
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Granier, Bruno, Robert Busnardo, Bernard Clavel, Michel Moullade, Jean Charollais, Guy Tronchetti, and Pierre Desjacques. "Refining Urgonian Biostratigraphy: A Key Section at L’Estellon, Drôme, France." In Springer Geology, 1095–97. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_209.
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Hunt, D., and M. E. Tucker. "Sequence Stratigraphy of Carbonate Shelves with an Example from the Mid-Cretaceous (Urgonian) of Southeast France." In Sequence Stratigraphy and Facies Associations, 307–41. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444304015.ch17.
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"Urgonian, adj." In Oxford English Dictionary. 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1970174046.
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Arnaud-Vanneau, Annie, Hubert Arnaud, Thierry Adatte, and Alexis Godet. "Depositional geometries in Barremian platform carbonates from south-eastern France." In Field guides to exceptionally exposed carbonate outcrops, 481–513. International Association of Sedimentologists, 2021. http://dx.doi.org/10.54780/iasfg3/09.
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Urgonian limestones from the southern part of the Vercors Massif constitute a seismic-scale outcrop analogue for hydrocarbon-producing carbonate reservoirs in giant fields, especially in the Middle East. The outstanding outcrops allow the understanding of depositional geometries and illustrate several types of carbonate depositional architectures in which reservoir facies can be interpreted at specific time periods during depositional sequences. The geographical distribution, size, quality and accessibility of the exposures allows visualisation of the reservoirs analogue facies in three dimensions.
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Hunt, Dave, and Maurice E. Tucker. "The Middle Cretaceous Urgonian Platform of Southeastern France." In Cretaceous Carbonate Platforms. American Association of Petroleum Geologists, 1993. http://dx.doi.org/10.1306/m56578c32.
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Tendil, Anthony J. B., Camille Frau, Philippe Léonide, François Fournier, Jean R. Borgomano, Cyprien Lanteaume, Jean-Pierre Masse, and Jean-Paul Rolando. "Stable-isotope chemostratigraphy of Urgonian-type platform carbonates: Time to be cautious?" In Case Studies in Isotope Stratigraphy, 165–216. Elsevier, 2019. http://dx.doi.org/10.1016/bs.sats.2019.08.001.
Full textConference papers on the topic "Urgonien"
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Bourdon, Matthew, Jacob Byerly, Annie Arnaud-Vanneau, Marina B. Suarez, Thierry Adatte, and Alexis Godet. "THE IMPACT OF APTIAN SUPER GREENHOUSE CONDITIONS ON THE URGONIAN SUBTROPICAL CARBONATE PLATFORM." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-368154.
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Aubert, I., P. Léonide, J. Lamarche, and R. Salardon. "Diagenetic Impact on Polyphase Fault Zones Drain Properties in Micro-Porous Carbonates (Urgonian – SE France)." In Fifth International Conference on Fault and Top Seals. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902326.
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Godet, Alexis, Christophe Durlet, Jorge Spangenberg, and Karl B. Föllmi. "WHEN EARLY DIAGENESIS ALTERS ORIGINAL ISOTOPE SIGNAL: INSIGHTS FROM URGONIAN PLATFORM CARBONATES, WESTERN SWISS JURA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-280244.
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Aubert, I., J. Lamarche, P. Leonide, N. Semmani, R. Bourezak, and R. Castilla. "Deciphering Diffuse Fractures from Damage Fractures in Fault Zones and Their Effect on Reservoir Properties in Urgonian Carbonates." In Third EAGE Workshop on Naturally Fractured Reservoirs. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201800036.
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Virgone, Aurélien, Gérard Massonnat, and Cécile Pabian. "An Outcrop Analog of Kharaib and Shu’Aiba Reservoir: Example of the Urgonian Platform (Lussanenque Area, Gard, SE France)." In GEO 2010. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609-pdb.248.334.
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Virgone, A., C. Pabian-Goyheneche, and G. J. Massonnat. "An Outcrop Analog of Kharaib & Shu'aiba Reservoir: Example of the Urgonian Platform (Lussanenque Area, Gard, SE France)." In IPTC 2009: International Petroleum Technology Conference. European Association of Geoscientists & Engineers, 2009. http://dx.doi.org/10.3997/2214-4609-pdb.151.iptc13659.
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Massonnat, Gerard Joseph, and Cecile Pabian-Goyheneche. "An Outcrop Analog of Kharaib & Shu'aiba Reservoir: Example of the Urgonian Platform (Lussanenque Area, Gard, SE France)." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2009. http://dx.doi.org/10.2523/13659-abstract.
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Massonnat, Gerard Joseph, and Cecile Pabian-Goyheneche. "An Outcrop Analog of Kharaib & Shu'aiba Reservoir: Example of the Urgonian Platform (Lussanenque Area, Gard, SE France)." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2009. http://dx.doi.org/10.2523/iptc-13659-abstract.
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Bastide, Fanny, Gerard Joseph Massonnat, Aurelien Virgone, and Cecile Pabian-Goyheneche. "An outcrop analog of Kharaib & Shu{prime or minutes or feet}aiba Reservoir: the Urgonian Platform of Southeastern France (Gard and Ardeche)." In Abu Dhabi International Petroleum Conference and Exhibition. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/162305-ms.
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Charles, Danquigny, Massonnat Gérard, Barbier Mickaël, Bouxin Pierre, Dal Soglio Lucie, and Lesueur Jean-Louis. "Contribution of the ALBION Dynamic Analogue in Understanding the Diversity of Fluid Flows in Fractured Carbonate Reservoirs. The Example of the LSBB Instrumented Site." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207664-ms.
Full textAbstract:
Abstract Carbonate reservoirs exhibit an extreme geological heterogeneity inducing a great diversity of fluids flows. Grasping the plurality of flows and the corresponding geological features require data scarcely available from subsurface hydrocarbons fields and even rarely acquired together on outcrop analogues. Among the different sites of the ALBION R&D project, the LSBB underground research laboratory provides outstanding access to both fractured limestone and groundwater dynamics through several experimental areas, including a 3.8 km long tunnel, which penetrates the Barremian-Aptian Urgonian formation to a maximum depth of 519 m. This paper gives an overview of the data acquired and the different works carried out on the LSBB site. From this synthesis, it draws lessons on the characterization of outcrop analogues and some insights for the modeling of fractured carbonate reservoirs. The quantity and diversity of the data acquired on the LSBB site allow: (i) the construction of nested multi-scale geological models, (ii) the comparison of measurements of different physical properties to better characterize the reservoir properties of the fractured rock, (iii) a multi-scale and multi-support approach to heterogeneity. Defining a common geological framework (facies model, rock type classification, inventory of structural objects, etc.) appears to be an essential step, possibly iterative, for the coupled interpretation of the various acquisitions and the extrapolation of results. Building a common geological model as a framework for interpretation help cross-fertilisation between geoscience domains. However, despite the huge amount of data, performing relevant and parsimonious rock typing remains a delicate exercise. This reminds us of the great uncertainties that can exist in establishing rules and concepts from limited data sets, such as those classically available for operational studies. Beyond the characterization of the depositional environment, the observations emphasize the importance of understanding the structural and diagenetic history, which leads to different rock types and current reservoir properties, to successfully define such a rock classification. Furthermore, the organization of flow paths within the fractured medium and its evolution over geologic time condition the processes of diagenesis and karstification. Hydrological processes and history must therefore be taken into account in this genetic reconstruction.