Carnets De Geologie最新文献

{"title":"Variations in fluvial reworking of Polish moldavites induced by hydrogeological change","authors":"T. Brachaniec","doi":"10.4267/2042/68186","DOIUrl":"https://doi.org/10.4267/2042/68186","url":null,"abstract":"Moldavites as ejecta glasses are fragile and transient: they are quickly abraded in fluvial conditions, this was confirmed by tumbling experiments. In the present study, multiple tumbling experiments were conducted to simulate the hydrogeological conditions of deposition of moldavites found in several different gravel pits. These experiments threw new light on the evolution of tektites during reworking. It appears that the original glass shape and mass as well as environmental conditions such as river velocity and the type of sediment with which they are associated are all important variables. However, the experiment did not simulate other significant variables, such as the variability of environmental energy. With given advantageous conditions, moldavite glasses could probably have withstood dozen kilometers of reworking, but this assertion is not sufficient to constrain the distance to their supply areas.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84119595","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":"A palaeobiological window into the Lower Cretaceous Cupido Formation: Puerto México section, Nuevo Leon, Mexico","authors":"Felipe Torres de la Cruz, E. Chacón-Baca, Yesica Edith Gómez-Mancha, Tomás Cossío-Torres","doi":"10.4267/2042/68182","DOIUrl":"https://doi.org/10.4267/2042/68182","url":null,"abstract":"Abstract: A rich geobiological record of Cretaceous biotic and abiotic interactions around the protoGulf of Mexico has been preserved in the massive Cupido carbonate platform, i.e., in a sedimentary sequence that represents a depositional period of approximately 15 Myr. This work documents lateral facies variation on a dip slope reef from a new outcrop in the upper part of the Cupido Formation in the state of Nuevo Leon, Mexico. The measured transect is correlated with a stratigraphic column logged in a nearby section. The preserved fossil biota represents marginal reef facies dominated by abundant rudist shells such as Douvillelia skeltoni, Toucasia sp., Offneria sp., and Amphitrocoelus sp. associated with relatively large colonial corals (with diameters up to 25 cm) like Stelidioseris sp. and to a lesser extent, with stromatoporoids. Benthic foraminifers (miliolids and textularids) with associated dasycladalean algae such as Salpingorella sp. and Terquemella spp. dominate the microfossiliferous content in wackestones to packstones. This facies is overlain by a thin (15-30 cm) stromatolite horizon at the upper end of the measured section. This locality represents a new paleobiological and taphonomic window into one of the most extensive carbonate platform system developed along the margin of the Gulf of Mexico during the Cretaceous. \u0000 \u0000Resume : Une fenetre paleobiologique dans la Formation Cupido du Cretace inferieur : la coupe de Puerto Mexico, Nuevo Leon, Mexique.- Un enregistrement geobiologique diversifie des interactions biotiques et abiotiques cretacees sur le pourtour du proto-Golfe du Mexique a ete preserve au sein de l'imposante plate-forme carbonatee de Cupido, c'est-a-dire dans une sequence sedimentaire qui correspond a une periode de depot d'une duree approximative de 15 Ma. Ce travail met en exergue la variation laterale des facies recifaux sur le flanc long (faiblement pentu) d'un nouvel affleurement monoclinal correspondant a la partie superieure de la Formation Cupido dans l'etat de Nuevo Leon, Mexique. Le transect etudie est correle avec la colonne stratigraphique etablie dans une coupe proche. Le biote fossile preserve correspond aux facies de bordure du recif ou abondent les coquilles de rudistes, tels que Douvillelia skeltoni, Toucasia sp., Offneria sp. et Amphitrocoelus sp., ces derniers y etant associes a des colonies relativement grosses (avec des diametres atteignant jusqu'a 25 cm) de coraux tels que Stelidioseris sp. et, dans une moindre mesure, avec des stromatoporoides. Les foraminiferes benthiques (miliolides et textularides), en association avec des algues dasycladales telles que Salpingorella sp. and Terquemella spp., dominent le contenu microfossilifere des wackestones a packstones. Ce facies est surmonte a la partie sommitale de la coupe etudiee par un mince horizon stromatolithique (15-30 cm). Cette localite offre une nouvelle fenetre paleobiologique et taphonomique au sein de l'un des plus vastes systemes de pla","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77398563","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":"Early Cenomanian coral faunas from Nea Nikopoli (Kozani, Greece; Cretaceous)","authors":"H. Löser, T. Steuber, C. Löser","doi":"10.4267/2042/66094","DOIUrl":"https://doi.org/10.4267/2042/66094","url":null,"abstract":"Book review: Rong Jiayu (editor-in-chief), Jin Yugan, Shen Shuzhong and Zhan Renbin (eds.), 2017. Science Press, Beijing, P.R. China, xviii + 1096 p. (two vols.)","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/66094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44413478","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":"Valanginian belemnites: New taxonomical and stratigraphical observations","authors":"N. Janssen","doi":"10.4267/2042/68153","DOIUrl":"https://doi.org/10.4267/2042/68153","url":null,"abstract":"Six new Valanginian belemnite species (Duvalia crassa sp. nov., Duvalia elongata sp. nov., Duvalia kleini sp. nov., Duvalia superconstricta sp. nov., Castellanibelus vaubellensis sp. nov., and \"Hibolithes\" lebresensis sp. nov.) are described here and two species (Duvalia aff. elongata and \"Hibolithes\" aff. pistilliformis (BLAINVILLE, 1827)) are left in open nomenclature. They come from both the \u0000distal and proximal parts of the Vocontian Basin in south-east France and the \u0000Baetic Cordillera in south-east Spain. In addition lectotypes are selected for Castellanibelus orbignyanus (DUVAL-JOUVE, 1841), Castellanibelus picteti (MAYER, 1866), and Duvalia lata (BLAINVILLE, 1827).","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87206185","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":"Heteroceras gracile sp. nov., a new species of Heteroceras Orbigny, 1849, from the upper Barremian of Morteiron (Alpes de Haute-Provence, France)","authors":"C. Baudouin, G. Delanoy, Grégoire Bournaud, R. Gonnet","doi":"10.4267/2042/66955","DOIUrl":"https://doi.org/10.4267/2042/66955","url":null,"abstract":"The species Heteroceras gracile sp. nov. is described; it is a small and slender species, with a small helix and hamuliniform morphology, previously considered as an atypical variant of Heteroceras baylei (Reynes, 1876). In southeast France, it is mainly known in the Morteiron section (Alpes de Haute-Provence, France), but the species is also present in Bulgaria and possibly in Japan.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/66955","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44842832","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":"Is Strontium-isotope stratigraphy a reliable tool for dating shallow-marine platform carbonates at the Barremian-Aptian transition? Review of western Tethyan case studies","authors":"C. Frau, J. Masse, M. Fenerci‐Masse, A. Tendil, A. Pictet, C. Lanteaume","doi":"10.4267/2042/66931","DOIUrl":"https://doi.org/10.4267/2042/66931","url":null,"abstract":"Strontium-isotope measurements on Lower Cretaceous marine rocks derive from belemnite material sampled in ammonite-constrained basinal successions. A group of values with a narrow range across the Barremian/Aptian boundary does not allow the separation of the uppermost Barremian (Martelites sarasini ammonite zone) from the lower Aptian pro parte (Deshayesites oglanlensis-D. forbesi ammonite zones). Growing numbers of studies applied Sr-Isotope Stratigraphy (SIS) on Barremian-Aptian shallow-marine sequences (Urgonian facies) in order to solve controversial results obtained by using different shallow-water biological time markers. Based on re-examination of case studies, we conclude that Sr-isotope values can neither be used to prove nor to disprove the location of the putative Barremian/Aptian boundary based on biostratigraphy. Pending more data available, SIS should be used with caution for dating ammonite-free carbonate sediments in the corresponding time interval.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/66931","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47309757","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":"Rediscovery of the type locality of the Udoteacean alga Boueina hochstetteri Toula, 1884, in the Lower Cretaceous of Serbia","authors":"I. BucurIoan, N. SudarMilan, Săsăran Emanoil, Jovanović Divna, Pleş George, Polavder Svetlana","doi":"10.4267/2042/66509","DOIUrl":"https://doi.org/10.4267/2042/66509","url":null,"abstract":"Boueina hochstetteri Toula (type-species of the genus) was published by Toula (1884) in the 10th report of his travel through the Balkan region. He considered this species to be a problematic organism with uncertain systematic affiliation. Later, Steinmann (1901) assigned this fossil to the calcareous algae. Our own field work performed in the autumns of 2015 and 2016 in the Pirot area (SE Serbia) led to re-identification of the rich Boueina hochstetteri type level, close to the confluence of the Temska and Nisava Rivers, the type locality of Toula. The rich Boueina level is part of a succession of bioclastic limestones. The fragments of Boueina thalli are occasionally branched, a feature supporting the interpretation of Boueina as an inarticulate udoteacean alga with rare branching.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/66509","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49077005","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":"Rhapydioninidés du Campanien-Maastrichtien en région méditerranéenne : Les genres Murciella, Sigalveolina n. gen. et Cyclopseudedomia","authors":"J. Fleury","doi":"10.4267/2042/68382","DOIUrl":"https://doi.org/10.4267/2042/68382","url":null,"abstract":"Les trois taxons de la famille des Rhapydioninidae analyses sont issus du genre Cuvillierinella PAPETTI & TEDESCHI, 1965, et sont regroupes au sein de la sous-famille Cuvillierinellinae. Ils sont reexamines a partir des types et de diverses populations nouvelles qui permettent d'approfondir et renouveler leur connaissance. Leurs tests A sont tous entierement planispirales et dotes a des degres divers de la \"structure helicoidale\", renommee ici structure confluente. Le genre Murciella est represente par l'unique espece M. cuvillieri, encore proche de Cuvillierinella mais entierement planispiralee ; les six populations etudiees, apparemment toutes de meme âge, reparties de l'Espagne au Dodecanese, temoignent d'une homogeneite d'ensemble qui les isole des autres taxons de la famille ; l'holotype de l'espece est interprete avec une grande vraisemblance comme representant la generation microspherique, a la lumiere de sections centrees de meme morphologie appartenant a des populations nouvellement decrites. Le genre Sigalveolina n. gen., individualise par la realisation parfaite de la structure confluente, est represente par quatre especes ; il s'agit pour trois d'entre elles du groupe precedemment denomme \"Murciella gr. renzi\" et d'une quatrieme, nouvelle, S. reicheli, qui correspondrait au mythique materiel, parfois evoque sous le nom de \"Cosinella\", anciennement decouvert par SCHLUMBERGER dans les confins italo-slovenes. Le genre Cyclopseudedomia, caracterise par son grand proloculus A et ses tests des deux generations presque entierement evolutes est reconsidere au moyen de la confrontation de quatre especes dont trois deja connues et une nouvelle, S. mavrikasi, en provenance des confins italo-slovenes et d'Italie meridionale. On note en outre la presence ponctuelle d'un organisme rapproche de Pseudonummoloculina kalantarii qui semble donner, avec d'autres especes attribuees au meme genre a d'autres epoques et en d'autres lieux, une image du groupe de Miliolacea dont sont issues les diverses lignees constituant les Alveolinacea. \u0000Il s'agit ainsi de la derniere partie d'une confrontation generale des taxons mediterraneens fini-cretaces de la famille des Rhapydioninidae, qui fait suite a celles des genres Rhapydionina - Fanrhapydionina puis Cuvillierinella - Metacuvillierinella menees precedemment par l'auteur. Un tableau general des traits exo- et endosquelettiques mis en œuvre par cette famille et une recapitulation dessinee des morphologies de la plupart des taxons qui la constituent en donnent une vue synthetique. Leur repartition stratigraphique en trois zones du Campanien Maastrichtien est precisee ; on peut douter que ces donnees soient aisement transposables a des regions qui n'auraient pas ete affectees par trois periodes d'emersion qui semblent avoir ete a l'origine des disparitions et apparitions successives dont semble temoigner la zonation.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81313612","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":"Fossil whale barnacles from the lower Pleistocene of Sicily shed light on the coeval Mediterranean cetacean fauna","authors":"A. Collareta, G. Insacco, A. Reitano, R. Catanzariti, M. Bosselaers, M. Montes, G. Bianucci","doi":"10.4267/2042/65747","DOIUrl":"https://doi.org/10.4267/2042/65747","url":null,"abstract":"We report on three shells of whale barnacle (Cirripedia: Coronulidae) collected from Pleistocene shallow-marine deposits exposed at Cinisi (northwestern Sicily, southern Italy). These specimens are identified as belonging to the extinct species Coronula bifida BRONN, 1831. Calcareous nannoplankton analysis of the sediment hosting the coronulid remains places the time of deposition between 1.93 and 1.71 Ma (i.e., at the Gelasian-Calabrian transition), an interval during which another deposit rich in whale barnacles exposed in southeastern Apulia (southern\u0000Italy) formed. Since Coronula LAMARCK, 1802, is currently found inhabiting the skin of humpback whales [Cetacea: Balaenopteridae: Megaptera novaeangliae (BOROWSKI, 1781)], and considering that the detachment of extant coronulids from their hosts' skin has been mainly observed in occurrence of cetacean breeding/calving areas, the material here studied supports the existence of a baleen whale migration route between the central Mediterranean Sea (the putative reproductive ground) and the North Atlantic (the putative feeding ground) around 1.8 Ma, when several portions of present-day southern Italy were still submerged. The early Pleistocene utilization of the epeiric seas of southern Italy as breeding/calving areas by migrating mysticetes appears to be linked to the severe climatic degradation that has been recognized at the Gelasian-Calabrian transition and that is marked in the fossil record of the Mediterranean Basin by the appearance of \"northern guests\" such as Arctica islandica (LINNAEUS, 1767) (Bivalvia: Veneroida). The subsequent abandonment of the Mediterranean Sea by most species of mysticetes is likely to have resulted from the progressive emergence of shallow-water coastal environments that occurred in Calabrian and Middle Pleistocene times.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45903731","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":"Hedbergella yezoana is a valid species name: Comments on the case 3620 and decision (opinion 2362) by the International Commission of Zoological Nomenclature","authors":"M. Georgescu","doi":"10.4267/2042/64918","DOIUrl":"https://doi.org/10.4267/2042/64918","url":null,"abstract":"International Commission of Zoological Nomenclature decided in September 2015 on case 3620 submitted by A. Ando (United States National Museum, Smithsonian Institution, Washington, D.C.), which regards the status of the species Ticinella primula Luterbacher in Renz et al., 1963, and Hedbergella trocoidea yezoana Takayanagi & Iwamoto, 1962. Decision was to place the former on the Official List of Specific Names in Zoology and the latter on the Official Index of Rejected and Invalid Specific Names in Zoology (ICZN, 2015, p. 227). The scientific fundamentals in the presentation of case 3620 are weak and do not support such a decision by the International Commission. Moreover, they create a significant disturbance of nomenclatural stability in the Linnaean classification of the Cretaceous planktonic foraminifera.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2018-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4267/2042/64918","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46747163","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}