Carnets De Geologie最新文献

{"title":"The ammonoid fauna of the Prionocyclus germari Zone (upper Turonian, upper Cretaceous) from Rochefort-en-Valdaine (Drôme, France)","authors":"C. Baudouin, G. Delanoy, C. Ifrim, J. Moreno-Bedmar","doi":"10.4267/2042/69401","DOIUrl":"https://doi.org/10.4267/2042/69401","url":null,"abstract":"The late Turonian ammonoid fauna of Rochefort-en-Valdaine (Drome, France) is herein described in detail and the intraspecific variability of Vocontiiceras vocontiense Diebold et al., 2018, is studied. The ammonoid assemblage (9 taxa identified) was deposited within the Prionocyclus germari Zone, which was defined in Germany, and is now also documented in southeastern France. Moreover, the co-occurrence of the heteromorph ammonoids Hyphantoceras (Hyphantoceras) flexuosum (Schluter) and Hyphantoceras (Hyphantoceras) ernsti Wiese indicates the lower part of the Prionocyclus germari Zone.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"19 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2018-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87731106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additional contributions to the knowledge of the Taquaral Member, Irati Formation (Lower Permian, Paraná Basin): Taphonomy and paleoenvironmental implications","authors":"A. Chahud","doi":"10.4267/2042/64291","DOIUrl":"https://doi.org/10.4267/2042/64291","url":null,"abstract":"The silty shale facies of the Taquaral Member (Irati Formation), which is one of the Permian units in the Brazilian Parana Basin, is discussed here based on the taphonomy relevant to the paleoenvironmental interpretation. The fossils are crustaceans (Clarkecaris and other indeterminate forms), isolated teeth, scales and bones of Actinopterygii, \"Palaeonisciformes \", which are the most common vertebrate remains, and also frequent scales of Coelacanthiformes. The scales, teeth and disarticulated bones are found together in accumulations, which may be interpreted as coprolites. Many of the fossil crustaceans display characteristics of ecdysis.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"243"},"PeriodicalIF":1.4,"publicationDate":"2017-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46177994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mecaster texanus (Echinoidea) from Turonian-Coniacian strata in the Sergipe-Alagoas Basin, Brazil","authors":"C. L. C. Manso, W. Souza-Lima","doi":"10.4267/2042/64287","DOIUrl":"https://doi.org/10.4267/2042/64287","url":null,"abstract":"The spatangoid echinoid Mecaster texanus (Roemer) was first described from the Austin Chalk in Texas (USA). In northeast Brazil, this species was recorded from the Upper Cretaceous (Turonian-Coniacian) Jandaira Formation in the Potiguar Basin. Here we extend the palaeogeographical distribution of M. texanus southwards to the Sergipe-Alagoas Basin, where this species occurs in the Turonian-Coniacian Cotinguiba Formation. A key to identification of spatangoids from the Cretaceous-Cenozoic sequence at Sergipe-Alagoas is added and considerations about other spatangoid species from that basin are presented.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"221"},"PeriodicalIF":1.4,"publicationDate":"2017-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64287","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41483477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cornulitids from the Upper Ordovician of northwestern Russia","authors":"O. Vinn, A. Madison","doi":"10.4267/2042/64289","DOIUrl":"https://doi.org/10.4267/2042/64289","url":null,"abstract":"Four cornulitid species occur in the Rakvere Regional Stage in NW Russia. The new species Conchicolites rossicus is here described; it is the earliest known Conchicolites from the Ordovician of Baltica. The new species has very small tubes with sharp, strong and regular annulations. The diversity of cornulitids in the Rakvere Regional Stage at the Pechurki quarry is usual for the Upper Ordovician of Baltica. The cornulitids of Pechurki quarry encrusted hard organic substrates in a mud bottom (clay and carbonate clay) environment. Cornulites sterlingensis occurs both in the Upper Ordovician of North America and Baltica, which suggest a short distance between these two paleocontinents and/or similar environmental conditions.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"235"},"PeriodicalIF":1.4,"publicationDate":"2017-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64289","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45332092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Palynologie et environnements des sédiments du Dévonien de Saïda (Algérie nord occidentale)","authors":"Mohammed Bougara, Philippe Steemans, A. L. Hérissé, F. Boulvain","doi":"10.4267/2042/64285","DOIUrl":"https://doi.org/10.4267/2042/64285","url":null,"abstract":"D'un point de vue paleontologique, les interpretations palynologiques basees sur les miospores et les acritarches du Devonien de Tiffrit (Saida, Algerie nord occidentale) sont similaires. Aucune des especes qui apparait dans les couches superieures de l'unite de reference dite unite de Boukourdene ou (BK1), d'âge plus recent, n'est incompatible avec un âge Praguien-Emsien, comme le denote la presence de miospores, surtout de Dibolisporites wetteldorfensis, Dictyotriletes emsiensis, D. subgranifer et Verrucosisporites polygonalis, ainsi que des acritarches tels que Evittia crucistellata, E. spicifera, Fimbriaglomerella aulerca, Florisphaeridium toyetae, Veryhachium aff. V. vandenbergheni. Au vu des niveaux microconglomeratiques a elements de phtanites siluriens, retrouves le long des unites sedimentaires de Tiffrit, nous considerons qu'un remaniement a affecte aussi bien le Silurien que le Devonien inferieur. Nous placons les unites sedimentaires de Boukourdene a l'etage Praguien-Emsien. D'un point de vue sedimentologique, les unites sedimentaires du Devonien du mole de Tiffrit sont liees a une dynamique gravitaire, dominee par un accroissement du niveau marin et rythmee par une subsidence accrue. Les facies semblent evoluer selon une polarite Est-Ouest. La taille des particules ainsi que la nature des facies et leur grande et rapide variabilite permettent d'evoquer un corps sedimentaire de type \"slope apron\". Les caracteres lithologiques, sedimentologiques et environnementaux du dispositif etudie plaident pour une marge tectonique active.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"191"},"PeriodicalIF":1.4,"publicationDate":"2017-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64285","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44228548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Révision de la Collection Juliette Pfender. 3e partie. À propos de quelques algues vertes fossiles","authors":"B. Granier, I. Bucur","doi":"10.4267/2042/64293","DOIUrl":"https://doi.org/10.4267/2042/64293","url":null,"abstract":"Ce travail est une nouvelle contribution - mineure - au recolement de la collection d'algues vertes fossiles de Juliette Pfender. Il dresse un inventaire partiel des algues vertes etudiees par cette chercheuse plus connue pour ses etudes sur les algues rouges. Le pietre etat de conservation de certaines lames minces et la rarete des specimens complets ne permettent que rarement a l'identification de depasser le niveau du genre.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"251"},"PeriodicalIF":1.4,"publicationDate":"2017-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64293","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46883576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"De l'importance de la collection Quatrehomme (Musée La Monnaye, Meung-sur-Loire) dans le paysage paléontologique français","authors":"Morgane Dubied, Charlène Gilbert, Maxime Deléglise, Flavie Laurens, B. Mennecart","doi":"10.4267/2042/62541","DOIUrl":"https://doi.org/10.4267/2042/62541","url":null,"abstract":"Importance of the QUATREHOMME collection (Monnaye Museum, Meung-sur-Loire) in the French palaeontological landscape.The QUATREHOMME collection is described by GINSBURG as \"modest to very modest\" and there is no accurate inventory. In order to highlight this collection and better understand its importance, an inventory of the terrestrial mammal remains is in progress. In the current state of the inventory 35 different locations were identified, mostly in the Savigné-sur-Lathan Basin. 3,266 specimens, covering 8 of the 9 orders of terrestrial mammals found in the Faluns, are currently registered in the data set. To date, the most impressive published Faluns mammal collections are from HARTMANN, hosted at the volunteer \"Musée du Savignéen\" (Savigné-sur-Lathan) and BOURGEOIS (today split in different museums). While this HARTMANN's collection contains 1,475 mammal remains (marine and terrestrial) and BOURGEOIS' one 1850 (only terrestrial), we estimate that the QUA1 Université de Bourgogne, Esplanade Erasme, 21000 Dijon (France) 2 mg.dubied@gmail.com 3 Musée La Monnaye, 22 Rue des Remparts, 45130 Meung-sur-Loire (France) c.gilbert@meung-sur-loire.com 4 maxime-deleglise@gmx.fr 5 Muséum d'Histoire Naturelle, Bâle, Augustinergasse 2, CH-4001 Bâle (Suisse) 6 flavie.laurens@mnhn.fr ; flavie.laurens86@gmail.com 7 Auteur correspondant Muséum d'Histoire Naturelle, Vienne, Burgring 7, 1010 Vienne (Autriche) bastien.mennecart@mnhn.fr ; mennecartbastien@gmail.com Manuscrit en ligne depuis le 12 septembre 2017 [Éditeur : Bruno GRANIER] Carnets Geol. 17 (5) 130 TREHOMME collection encompasses more than 7,500 terrestrial specimens. It is the largest known Faluns collection of Pliopithecus (25 specimens) and of Lagomorpha (1,355 specimens). Also, eight Tapiroidea specimens (including a jaw with teeth) and three Chalicotherium remains are inventoried. This collection is now being studied in detail. In the next few years it will take a more prominent place in the French paleontological landscape.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"129"},"PeriodicalIF":1.4,"publicationDate":"2017-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/62541","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42278706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proposition pour l'établissement du GSSP de l'Aptien supérieur dans le Bassin d'Apt (Vaucluse, SE France) : Synthèse des données stratigraphiques","authors":"M. Moullade, G. Tronchetti, Christine Balme, Yves Dutour, P. Ropolo, Gregory Price, Mathieu Martinez, B. Granier","doi":"10.4267/2042/62954","DOIUrl":"https://doi.org/10.4267/2042/62954","url":null,"abstract":"La synthese des donnees stratigraphiques recueillies depuis plus d'une decennie dans la region stratotypique a permis d'etablir une coupe composite des \"marnes aptiennes\" s'etageant de la Sous-Zone d'ammonites a Grandis jusqu'a la base de la Zone a Melchioris, soit depuis la Zone de foraminiferes a Schackoina (Leupoldina) gr. cabri jusqu'a la Zone a Globigerinelloides algerianus. Cette coupe composite integre les coupes partielles de Clavaillan, Pichouraz Sud et Est, La Tuiliere, Les Gays et Gargas (Vaucluse, SE France). Notre revision a montre en particulier que le banc marno-calcaire, rapproche du \"Niveau blanc\" vocontien et jusqu'alors suppose unique et isochrone, qui divise la serie marneuse affleurant dans les coupes de Clavaillan et de Pichouraz, correspond en fait a deux niveaux stratigraphiquement distincts. La presente etude confirme que la serie visible des marnes aptiennes dans la region stratotypique, non compte tenu de la Formation supra-urgonienne \"A1\" de Leenhardt (1883), ne comprend que les termes sommitaux du Bedoulien et une partie inferieure (= Gargasien inferieur et moyen) de l'Aptien s.s. (i.e., sensu Orbigny, 1840). Etayee par une approche integree, la mise en parallele de la serie du Bassin d'Apt avec les termes contemporains du Bassin de Cassis-La Bedoule a egalement permis de detecter et de quantifier des variations importantes, non concomitantes, des rythmes d'accumulation sedimentaire entre les deux secteurs. Au final, la coupe de Clavaillan, situee a 8 km a l'WSW de Gargas, constitue l'unique affleurement ou la limite entre la Sous-Zone a Grandis et la Zone a Furcata est visible dans un contexte permettant de le proposer comme candidat a la fixation du GSSP du sous-etage Gargasien (ou de l'Aptien s.s. dans sa conception historique).","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"161-189"},"PeriodicalIF":1.4,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/62954","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44220231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The most distal moldavite findings from Lower Silesia, Poland","authors":"T. Brachaniec","doi":"10.4267/2042/62663","DOIUrl":"https://doi.org/10.4267/2042/62663","url":null,"abstract":"The present note reports new findings of moldavites from southwestern Poland. The material was found in the Nowa Wieś Kącka sandpit. To date, it represents the most distal locality where moldavites have been found. These moldavites, like other moldavites previously described from Lower Silesia, are recovered from fluvial sands and gravels of the Gozdnica Formation. Like other Polish moldavites, the moldavites in this study display high SiO2 contents (~77 wt.%). Their dimensions range from 9 to 11 mm in maximum diameter. Their relatively large sizes suggest that the distribution of Polish tektites defines a sub-strewnfield larger than previously expected.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"139-144"},"PeriodicalIF":1.4,"publicationDate":"2017-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41632321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rare rugosan-bryozoan intergrowth from the Upper Ordovician of Estonia","authors":"O. Vinn, A. Ernst, U. Toom","doi":"10.4267/2042/62664","DOIUrl":"https://doi.org/10.4267/2042/62664","url":null,"abstract":"Two relatively large specimens of the rugosan Lambelasma sp. are fully intergrown with the bryozoan Stigmatella massalis colony. The intergrown specimen occurs in the Oandu Regional Stage (lower Katian) of Estonia and constitutes the earliest record of bryozoan-rugosan intergrowth from Baltica. Most likely this symbiotic association was accidental. Rugosans presumably benefitted from the bryozoan, which served as an anchor to stabilize them in hydrodynamically active waters. The lack of malformations and no decrease in the size of bryozoan zooids near the rugosans indicate a lack of negative effect of the rugosans on the bryozoan. Bryozoan-rugosan symbiosis is only known from the Ordovician of Baltica and Laurentia.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"17 1","pages":"145-151"},"PeriodicalIF":1.4,"publicationDate":"2017-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/62664","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45134637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}