bluuebunny/crossref_metadata_2025 huggingface dataset:
Distribution stratigraphique des ostracodes du Barrémien au Turonien, le long d'une transversale Agadir-Nador (Maroc)
Authors: Andreu-Boussut Bernard
Published: September 2018

Les quelque 450 échantillons récoltés dans le Crétacé marocain (Barrémien à Turonien), le long d'une transversale Agadir-Nador, se sont révélés modérément riches en ostracodes. 197 espèces, appartenant à 61 genres, ont été recensées (Andreu, 1991).

La plus grande partie de la faune est nouvelle, une cinquantaine d'espèces étant déjà connues en Europe ou en Afrique ; ce nombre inclut les espèces nominales, affines (aff.), comparées (cf.) et regroupées (gr.). 23 espèces nouvelles, dont la distribution stratigraphique est discutée dans ce travail, ont été décrites (118 espèces mal conservées, d'identification délicate ou dont le nombre d'individus est pauvre, ont été laissées en nomenclature ouverte). La répartition dans le temps de ces espèces précise et clarifie la position stratigraphique de la plupart des formations qui les contiennent, et définissent, malgré leur nouveauté parfois, tout ou partie des étages ou des sous-étages considérés : Bédoulien. Clansayésien. Albien (s. s., à l'exception du Vraconien), Vraconien. Cénomanien essentiellement.
Silicoflagellés et Diatomées du Pléistocène inférieur de l'île de Milos : coupe d'Adamas SE (Cyclades, Grèce)
Authors: Frydas D.
Published: September 2018

Le but des recherches sur les silicoflagellés et les diatomées pléistocènes de l'île de Milos (Mer Egée) est, d'une paît, la détermination précise de l'âge des sédiments qui les renferment et, d'autre paît, la reconstitution des conditions paléoenvironnementales présidant au dépôt. Durant le Pléistocène précoce l'activité volcanique et tectonique a provoqué un changement de profondeur et de salinité du milieu qui a influé sur la composition des associations de diatomées. Dans la coupe d'Adamas-SE, celles-ci sont marines vers la base de l'intervalle diatomilique et deviennent saumâtres vers le sommet. L'étude de la variation des pourcentages de nannoflore révèle l'existence d'espèces polyhalobes à oligohalobes chez les diatomées. Ces espèces indiquent un âge pléistocène précoce confirmé par l'étude des silicoflagellés, exclusivement représentés par des espèces polyhalobes à mésoeuiyhalines.
Sédimentologie, tectonique (et variations relatives du niveau marin) dans les formations du Miocène inférieur à moyen. Tunisie centrale et orientale
Authors: Yaich Chokri
Published: September 2018

Ce travail apporte des précisions sur les particularités sédimentolo-giques, séquentielles et tectono-sédimentaires de deux corps détritiques du Miocène inférieur, il s'agit des formations Messiouta (Burollet, 1956) et Grijima (Yaich 1987, 1988) se trouvant en Tunisie centrale et nord-orientale. Cette étude montre que la formation Messiouta (Aquitanien), continentale, a pris place dans des paléo-structures dont certaines ont une orientation E-W. Cette sédimentation varie selon les endroits : de type gravitaire, fluviatile, lacustre à palustre, lagunaire avec également la superposition de plusieurs horizons pédogénétiques. Au-dessus, avec la formation Grijima datée Burdigalien supérieur, c'est le supercycle TB2 qui commence (TB2. 2 et TB2. 3) ; on constate un changement du type de sédimentation avec l'arrivée en mer burdigalienne transgressive, et en direction de l'Est et Nord Est, d'un matériel silico-clastique s'édifiant en corps deltaïques soumis à des influences de marée. Les dépôts de la formation Grijima (Mit permis le comblement d'un bassin de morphologie irrégulière essentiellement hérité de l'Oligo-Aquitanien. Les épandages sahariens éocènes à dragées de quartz, ainsi que les terrains oligo-miocènes affleurant au Burdigalien, constituent les principaux réservoirs potentiels de matériel à dragées de quartz alimentant la formation Grijima.
The Upper Cretaceous biostratigraphy of Pakistan : A synthesis
Authors: Butt Aftab Ahmad
Published: September 2018

Synthise biostratigraphique du Crétacé supérieur du Pakistan. La succession stratigraphique du Crétacé supérieur pakistanais concerne les intervalles Cénomanien-Turonien, Coniacien-Campanien et Maastrichtien. Les sédiments coniaciens à campaniens sont connus dans le Nord (Kawagarh Formation) et dans le Sud (Parh Limestone). La distribution régionale et les similitudes de faciès (micrites à globotruncanidés) supposent des phénomènes de transgression sur la marge nord-ouest de la plaque indienne. Au Maastrichtien par contre, des phénomènes de régression sont marqués par l'absence de dépôt au Nord et le développement de faciès peu profonds au Sud (Pab Sandstone). Au passage Crétacé-Tertiaire, on observe une continuité de dépôts argileux (Korara Shale) livrant des foraminifères planctoniques du Maastrichtien et du Danien, dans le Kirthar Range (coupe de la rivière Gaj) ou dans le Pab Range.
Tectonique synsédimentaire des séries crétacées post-barremiennes au Nord-Est de la Chaine des Chotts (Tunisie méridionale)
Authors: Louhaichi M.-A. , Tlig Saïd
Published: September 2018

La géométrie des dépôts du Crétacé post-barrémien dans le secteur est de la chaîne Nord des Chotts montre que la sédimentation a été contrôlée par l'interférence de familles d'accidents de direction Nord-Sud et Est-Ouest. On reconstitue six épisodes de mouvements majeurs, qui accompagnent la formation d'une vaste zone haute dans l'intervalle Aptien-Turonien, puis au Coniacien -Campanien, le basculement de blocs, une inversion de subsidence et l'ouverture de fossés de direction Nord-Sud. Le secteur étudié apparaît situé au croisement de deux familles d'accidents affectant le substratum anté-triasique de direction Nord-Sud et Est-Ouest. Le premier constitue le prolongement de l'axe Nord-Sud, et le second longe l'actuelle chaîne Nord des Chotts.
Découpage en séquences de dépôt, datées par les grands Foraminifères benthiques, du Dogger carbonaté du Sud du Portugal (Santiago-do-Cacèm et Algarve)
Authors: Peybernes Bernard , Manuppella Giuseppe , Cugny Pierre
Published: September 2018

Dans la partie méridionale du Portugal, au Sud de Setubal, le Dogger supérieur carbonaté de Santiago-do-Cacém, à polarité protoatlantique et directement transgressif sur le Lias dolomitique, est subdivisé en deux séquences de dépôt, Si et S2, représentées par des calcaires de lagon interprétés comme appartenant à des intervalles transgressifs superposés. En Algarve, plus au Sud encore, un Dogger "téthysien", plus ancien et de lithologie différente, correspond aux calcaires de la Formation de Malhao (Aalénien à Bathonien) subdivisée en trois séquences de dépôt au moins, AL1, AL2 et AL3 et disposée transgressivement sur un Lias inférieur daté micropaléontologi-quement. Les attributions stratigraphiques proposées s'appuient, entre autres, sur deux associations de Foraminifères benthiques d'âge et de localisation géographique distincts : Fr, dominée par Gutnicella gr. cayeuxi, dans le Dogger inférieur de l' Algarve ; F2' à Ataxella occitanica, dans le Dogger supérieur de Santiago-do-Cacém. Ces microfaunes démontrent le diachronisme des carbonates du Dogger sud-portugais et l'histoire différente des deux bassins étudiés, l'un à polarité téthysienne, l'autre à polarité protoatlantique.
Présence du genre Aphanius Nardo, famille des Cyprinodontidae, dans le Miocène du Bassin de Francardo-Ponte Leccia (Corse)
Authors: Cubells J.F. , Ferrandini Jean , Maurel-Ferrandini Michelle , Gaudant Jean , Loÿe-Pilot Marie-Dominique
Published: September 2018

Among the four Corsican Miocene sedimentary basins, the Francardo-Ponte Leccia basin is the only one lying in the centre of the island. With a North-South axis, it is located at the frontier between the Hercynian and the Alpine parts of Corsica. The sedimentation is controlled by distensional and transverse tectonics. Three formations are distinguished which are, from the bottom to the top, and from the South to the North the Ortone, the Taverna and the Francardo formations. The Ortone and Francardo formations are continental with conglomeratic deposits of debris flows, alluvial fan and fluviatile types. The Taverna formation, made of marls, silts and sands deposits followed by sandstones and conglomerates, is a lagu-nal-marine in origin. Hie studied fish and scales were found at the top of the marl-silty levels which, according to the microfauna, are Middle Burdigalian age. The fish skeleton belongs to the Cyprinodontidae and more precisely to the genus Aphanius Nardo, which characterize brackish environnement in the Recent Mediterranean area. This is the first reference of a Teleostean fish in the Corsican Miocene.
L'ichtyofaune messinienne à la périphérie de la plate-forme carbonatée de Melilla-Nador (Nord-Est du Maroc)
Authors: Gaudant Jean , Saint Martin Jean-Paul , Benmoussa A. , Cornée Jean-Jacques , El Hajjaji Khalil , Muller J.
Published: September 2018

Messinian fish-fauna from the periphery of the Melilla-Nador carbonate platform (Northeastern Morocco).

Fossil fishes have been found in three Messinian outcrops of the Melilla-Nador basin (Morocco), in distal sediments interpreted as coeval with some of the carbonate platform units. Two of them have yielded the same two species of Clupeids, one of them belonging to the genus Sardina ANTEPA. The third outcrop has mainly produced fragments of young Bregmaceros and isolated scales of Clupeids. The Messinian fish-fauna of the Melilla-Nador basin is characterized by its oligospecificity which is probably the consequence of a relative geographical isolation of this basin. Moreover, the identified species are indicative of a shallow marine environment
A model for the Late Miocene reef-Tripolaceous associations of Sicily and its relevance to aberrant coral growth-forms and reduced biological diversity within the Palaeomediterranean
Authors: Pedley Martyn , Grasso M.
Published: September 2018

A detailed study of the latest Tortonian and earliest Messinian (Miocene) strata of North Central Sicily reveals the presence of a trans -gressive episode immediately prior to the "salinity crisis". In detail two reef events are present, an earlier one (Late Tortonian) with diverse coral faunas, and a second (Early Messinian) reef episode containing both relatively diverse Porites-Tarbellastraea dominated reefs and monogeneric Porites reefs, together with the earliest diatomite deposits (Tripoli Formation).

The diatomites are associated with partly isolated embayments which were the sites of algal and bacterial blooms. These probably periodically generated toxic conditions.

Leakage from the diatom aceou s embayment waters into the open marine, but virtually static water, reefal areas during the Early Messinian is believed to have given a selective advantage to stromatolitic microbial mat growth. Only the rod-like growth-form of Porites ultimately was able to thrive under increasingly tranquil water conditions and strong competition from microbial mats. This was achieved by a growth strategy involving rapid apical growth of slender vertical orientated branches.

The juxtapositioning of algal dominated diatom basins and coral reef basins by Late Miocene times was due to a combination of plate margin synsedimentary tectonic deformation associated with Afro-European plate collision, and normal marine eustatic events connected with the initiation of dessication of the Palaeomediterranean Basin.

The model presented is applicable to all Mediterranean, late Miocene coral reef ares flanking the alpine chain affected by synsedimentary tectonism.
La plate forme carbonatée cénomanienne de Tunisie du Centre-Ouest. Faciès, cortèges argileux, paléoenvironnements et stratigraphie séquentielle
Authors: Saïdi Fethi , Ben Ismaïl Mohamed Hedi , Negra Mohamed El Hédi , M'Rabet Ali
Published: September 2018

Dans la région de Kasserine-Tamesmida, la série du Cénomanien fait l'objet d'une étude stratigraphique et sédimentologique détaillée. Une coupe-type est choisie au Jebel Chambi. Les attributions chronostratigraphiques s'appuient sur les foraminifères planctoniques et sur les associations de foraminifères benthiques et d'ostracodes. Les principaux faciès font l'objet d'une étude sédimentologique détaillée et les cortèges argileux sont interprétés. Les variations latérales d'épaisseurs et de faciès sont déduites des affleurements et des sondages. Elles permettent de suivre l'évolution spatio-temporelle des milieux de dépôt et d'en préciser le cadre paléogéographique. L'application des concepts de la stratigraphie séquentielle permet de définir trois séquences de dépôt, corrélables à la charte globale de Haq étal. (1988).
Tectonique salifère polyphasée dans la région de Mejez El Bab-Testour ("Zone des Dômes", Tunisie septentrionale) : contrôle de la sédimentation méso-cenozoïque
Authors: El Ouardi H. , Turki Mohamed Moncef
Published: September 2018

In Mejez el Bab-Testour area, Triassic domes are the continuity of ech-Chehid dome, they result from polyphased halokinetic motion. The different setting stages can be deduced from the phenomena that occur within the Mesozoïc-Cenozoïc deposits ; reduction in thickness, progressive bevels, stratigraphie gaps, intraformational unconformities, hydroplastic deformations and reworking of Triassic mate¬ rial. During the Quaternary and Miocene shortening phases, these dome structures have acquired the current mushroom-shape and have thrusted Barremian to Plio-Quaternary series.
Nouveaux exemples de dimorphisme chez les Ancyloceratina (Ammonoidea) de l'Hauterivien vocontien
Authors: Ropolo P. , Gonnet R.
Published: September 2018

New examples of dimorphism inside Vocontian Hauterivian Ancyloceratina (Ammonoidea). The existence of dimorphic pairs demonstrated already inside the heteromorphic ammonite populations from Hauterivian and Barremian ages : (Avram, 1984 ; Aguirre-Urreta and Klinger, 1986 ; Delanoy, 1990, 1992 ; Delanoy and Poupon, 1992 ; Klinger and Kennedy, 1992 ; Ropolo, 1991 ; Ropolo and Salomon, 1992 ; Ropolo, 1995) is confirmed by new examples : Crioceratites quenstedti (Ooster, 1860), Crioceratites dilatatum (d'Orbigny, 1840), Crioceratites majoricensis (Nolan, 1894, sensu Wiedmann, 1976), C. mahakaliae (Sarkar, 1955), C. journoti (Sarkar, 1955). This dimorphism, dimensional for the first taxon and morpho-dimensional for the others, allows us to discuss again the taxonomic-cuts commonly met by the authors.
Biostratigraphie de l'Albien du Koudiat el Beida (Nord du J. Mrhila, Tunisie centrale)
Authors: Zghal Ihsen , Bismuth H. , Razgallah-Gargouri Saloua , Damotte Renée Rivière , Ben Hadjali N.
Published: September 2018

L'analyse biostratigraphique de la coupe du Koudiat el Beida a per¬ mis de préciser l'âge albien de cette série et de distinguer cinq termes lithostratigraphiques caractérisés chacun par une association micro-paléontologique (Foraminifères, Ostracodes et Algues) bien déterminée. L'étude taxinomique de ces microorganismes a permis de répertorier vingt espèces de Foraminifères planctoniques, cent trente six espèces de Foraminifères benthiques, quanrante espèces d'Os-tracodes et trois espèces d'Algues. Ces microfossiles attestent d'un milieu marin ouvert, de faible profondeur (circalittoral) qui évolue progressivement vers un milieu plus profond dans le domaine épibathyal. La paléogéographie de la région du J. Mrhila, est contrôlée par la tectonique. En effet, les affleurements du Koudiat el Beida montrent que des sédiments très épais de faciès bassin se sont déposés au Nord du Mrhila, pratiquement sans interruption depuis le Clansayésien jusqu'à la fin des temps albiens.
Contribution à l'étude géomorphologique et sédimentologique du Quaternaire de la vallée de l'Oum Rbia (Méséta côtière atlantique -Maroc)
Authors: Ouadia Mohamed , Aberkan M'Hamed
Published: September 2018

Dans le bassin des Doukkala, la vallée de l'Oued Oum Rbia présente une morphologie variable selon les secteurs de ce bassin. L'aspect géomorphologique de cette vallée et son évolution, tant dans l'espace que dans le temps, sont le résultat de plusieurs facteurs : topographie, lithologie, tectonique, climat, sans négliger l'action anthropique. Les caractéristiques sédimentologiques des terrasses fluviatiles du Quaternaire ancien différent de celles du Quaternaire récent. La nature des apports détritiques aurait, sans doute, été contrôlée en plus de la dynamique sédimentaire, par la néotectonique et le contexte climatique.
La consommation du Mouflon (Ovis antiqua, Pommerol, 1879) au Pléistocène moyen à la Caune de l'Arago (Tautavel, Pyrénées-Orientales)
Authors: Monchot Hervé
Published: September 2018

De nombreux ossements de mouflon découverts dans les différents niveaux archéologiques de la Caune de l'Arago présentent des marques dues à l'activité humaine. Une description précise de ces traces a été effectuée en tenant compte de nombreux paramètres comme l'orientation, la localisation sur l'os et la morphologie de la strie (longueur, largeur, profondeur). Cette procédure nous permet ainsi de définir un modèle de traitement du mouflon antique par les anténéandertaliens et de privilégier l'hypothèse d'un homme chasseur plutôt que charognard.
The sedimentological records of the Cretaceous platform-basin transition in the Gumiishane region (N.E. Turkey)
Authors: Yilmaz C.
Published: September 2018

L'enregistrement sédimentologique de la transition plate-forme -bassin dans le Crétacé de la région de Gumushane (NE Turquie). La plate-forme carbonaté du Jurassique - Crétacé inférieur de la région de Gumushane (NE Turquie) a été rompue à l'Albien, lors de mouvements tectoniques en extension. Les relations plate-forme-bassin sont enregistrées daps les formations Berdiga et Kermutdere.

L'organisation générale est celle d'une marge carbonatée avec transition entre plate-forme, talus et bassin.

Depuis la plate-forme jusqu'au bassin on trouve des wackestones à petits foraminifères benthiques, packstones, grainstones — des calcaires brêchiques — des turbidites et wackestones à foraminifères planctoniques. Le contexte structural et les caractéristiques sédimentologiques suggèrent le rôle d'une discontinuité tectonique majeure.

Cette marge faillée montre des similitudes avec certaines marges continentales et des bordures de rift.
Les bioconstructions du Bajocien-Bathonien pp. du Haut-Atlas marocain (Nord d'Errachidia-Boudenib) : sédimentogenèse et contexte paléogéographique
Authors: Ait Addi A. , El Hanbali M. , Bobier Claude
Published: September 2018

Les bioconstructions d'âge bajocien-bathonien pp. du Haut-Atlas marocain (Nord d'Errachidia-Boudenib), sont principalement constituées par des madréporaires associés à quelques éponges, algues et bryozoaires et à une macrofaune néritique très abondante (mollusques, échinodermes, brachiopodes...). L'immaturité et la fragilité de ces bioconstructions révèle l'absence de cimentation précoce et des conditions écologiques relativement défavorables pour une plus grande prolifération des organismes constructeurs. L'édification de ces bioconstructions marque l'installation de plate-formes carbonatées sur toute la zone étudiée pendant le Bajocien moyen et supérieur et au Bathonien ?

Ces épisodes bioconstruits sont rehaussés par la montée des eaux consécutive au comblement de l'espace disponible et par des phases d'accalmie tectonique.
A propos de quelques Ancyloceratidae nouveaux ou peu connus du Barrémien sommital de La Bédoule (B. du Rh., France) : position stratigraphique et systématique
Authors: Ropolo P. , Gonnet R.
Published: September 2018

La récente étude dans le Barrémien sommital de la Bédoule, (Bouches du Rhône -France), d'un riche niveau à Pseudocrioceras, (équivalant sans ambiguïté à la Zone à Pseudocrioceras coquandi de Busnardo -1984), a permis de préciser la situation stratigraphique de ce genre, au sommet de la zone à Martelites sarasini et juste en dessous de la limite Barrémien/Aptien, (définie par le FAD des premiers Deshayesites de la Zone à Deshayesites tuarkyricus) (Delanoy et alii, 1997 -Ropolo et alii, 1999, Ropolo et alii -Gonnet et alii sous presse). De nouvelles recherches, nous ont conduit à découvrir trois nouvelles espèces d' Ancyloceratidae, Gill, 1871 : Pseudocrioceras massei nov. sp., Pseudocrioceras rawsoni nov. sp. et Pseudocrioceras mickali nov. sp.. La présence dans ces mômes niveaux de deux espèces géorgiennes : Pseudocrioceras densecostatum Kakabadze, et Pseudocrioceras aff. abichi (Anthula), venant s'ajouter à celles déjà décrites à la Bédoule (Ropolo et alii, 1999, Ropolo et alii sous presse) nous permet d'affirmer une fois encore le potentiel de corrélation de cet horizon qui devrait accéder au statut de sous-zone dans le domaine téthysien.

Le dimorphisme de Pseudocrioceras breve (d'Orbigny), qui appartient aussi à ces niveaux, est proposé.
The stratigraphic position of " Ammonites " consobrinus d'Orbigny (Deshayesitidae, Ammonoidea) in the lower Aptian of Cassis-La Bédoule (SE France)
Authors: Ropolo P. , Cecca Fabrizio , Gonnet R.
Published: September 2018

Recent investigations in the Les Fourniers section (La Bédoule), within the historical lower Aptian (Bedoulian) stratotype-area, enabled us to collect complete specimens of Deshayesites consobrinus (d'Orbigny) corresponding to the original illustration. This finding leads us to reject the hypothesis of a "synthetograph" made up by the author from several specimens belonging to different species and also to better define the stratigraphie position of this species, within the Deshayesites weissi Zone.
Les faunes d'Ammonites du Barrémien supérieur / Aptien inférieur (Bédoulien) dans la région stratotypique de Cassis-La Bédoule (SE France) : état des connaissances et propositions pour une zonation par Ammonites du Bédoulien-type
Authors: Ropolo P. , Conte Gabriel , Gonnet R. , Masse Jean-Pierre , Moullade Michel
Published: September 2018

Upper Barremian/lower Aptian (Bedoulian) ammonite faunas in the stratotypic area of Cassis-La Bédoule (SE France). Present knowledge status and proposal for an Ammonite zonation of the type-Bedoulian. On the basis of recent investigations, the ammonite inventory of the upper Barremian/lower Aptian beds in the historical stratotype area of La Bédoule leads to confirm that the Bedoulian substage (and thus the Aptian stage) lower boundary is determined by the first appearance of the genus Deshayesites. The Bedoulian/Gargasian boundary is drawn at the top of the Dufrenoya furcata zone (= Dufrenoya spp./Tropaeum bowerbancki zone sensu Conte, 1994). The ammonitic content of the stratotype leads also to a subdivision which conforms better to most of the recently proposed Mediterranean zones and permits to partly correlate the standard zonation with that of the Boreal realm.
Le stratotype historique de l'Aptien inférieur (région de Cassis-La Bédoule) : synthèse stratigraphique
Authors: Moullade Michel , Masse Jean-Pierre , Tronchetti Guy , Kuhnt Wolfgang , Ropolo P. , Bergen J.-A. , Masure Edwige , Renard Maurice
Published: September 2018

La mise en corrélation des principaux signaux d'ordre sédimentaire, biologique et géochimique recueillis à l'occasion d'une révision du stratotype historique de l'Aptien inférieur dans la région de La Bédou-le-Cassis permet de mettre en évidence et de calibrer au sein de la série barrémo-bédoulienne un certain nombre de coupures ou discontinuités importantes ou même majeures : niveau "Taxy", niveau "Roch" (limite Barrémien-Aptien), niveau "Toucas", discontinuité A2 (majeure) (limite Bédoulien inférieur-Bédoulien supérieur), banc 158, banc 170, et de les replacer dans le contcxtc régional (SE de la France). Inversement des crises reconnues dans l'océan mondial ("crise des Nannoconus", événement anoxique AOE1a) ou la limite paléontologique entre Bédoulien et Gargasien ne sont pas clairement exprimées ou marquées à La Bédoule. Les coupures résultant d'une approche de stratigraphie intégrée ne coïncident aussi que très rarement avec les limites de séquences et autres événements de la récente charte séquentielle publiée par Hardenbol et al. (1998), pourtant en grande partie appuyée sur des données d'observation provenant du stratotype. Au strict point de vue biostratigraphique, la limite Barrémien-Aptien est précisément marquée par l'apparition du genre d'ammonites Deshayesites, dont les différentes espèces (D. tuarkyricus, D. weissi, D. deshayesi), relayées par un autre Deshayesitidé (Dufrenoya furcata) permettent également d'établir une biozonation de l'Aptien inférieur conforme au standard méditerranéen. Seul le Bédoulien supérieur est clairement caractérisé par des changements significatifs des Foraminifères planctoniques, avec l'apparition étagée de plusieurs espèces dont notamment Blowiella blowi et Schackoina (Leupoldina ) cabri. Aucun renouvellement marqué n'est observé à la limite Bédoulien-Gargasien. En revanche les Nannofossiles calcaires marquent la limite Barrémien-Aptien avec l'apparition d 'Hayesites irregularis, îa limite Bédoulien inférieur-Bédoulien supérieur avec celle de Rhagodiscus angustus et la base de la zone à D. furcata avec Eprolithus floralis. Chez les Dino-flagellés les bio-événements s'opèrent au sein des principales bio¬ zones d'ammonites, avec en particulier l'apparition de Tehamadinium tenuiceras, datum significatif à l'échelle au moins européenne, ici calibré au sein de la zone à D. furcata.
Biostratigraphical and paleoenvironmental determination of a marine Plio/Pleistocene outcrop in Cefallinia Island (Greece)
Authors: Triantaphyllou M.V. , Drinia H. , Dermitzakis M.D.
Published: September 2018

Lofos section is located in the southern part of Paliki peninsula in southwest Cefallinia island. It consists of 15-20 m of homogenous bluish marls with macrofossils and coarse grained alternations, followed by almost 10 m of sandy marls.

The data from the quantitative biostratigraphic analysis based on calcareous nannofossils of the studied material allow the correlation of the lower part of Lofos section with MNN19a biozone which chronostratigraphically points to an uppermost Pliocene. At about 16 m from the base of the section, it is possible to recognize the MNN19a/MNN19b biozones boundary which points to the Pliocene/Pleistocene boundary. The rest of the section can be assigned to Pleistocene.

Finally, a paleoenvironmental reconstruction and determination of the paleoenvironmental parameters is attempted based on the quantitative, paleoecological analysis of the benthic foraminifera. The paleoecological data indicate that the lower part of the studied sequence have been deposited in waters with lowered oxygen levels. Stagnant conditions became less severe in the course of deposition.
Nouvelles charophytes de l'Eocène continental de l'Algérie
Authors: Mebrouk F. , Feist Monique
Published: September 2018

Six new species from non-marine Tertiary localities of Algeria are described and situated in their stratigraphie context. Five of them come from Oued Meguerchi (Saharian Atlas) and the sixth one from Gour-Lazib and Glib-Zegdou (north-western Saharian Hammada). The affinities of the flora as a whole suggest that relationships between North Africa and northern mesogean regions as well as, but to a less extant, with Asia.
Géodynamique des bassins crétacés d'une partie de l'Atlas tunisien septentrional (Zone des dômes)
Authors: El Ouardi H. , Rami A. , Turki Mohamed Moncef
Published: September 2018

Une étude tectono-sédimentaire des séries crétacées en Tunisie septentrionale (zone des dômes) permet de prouver que ces séries se sont déposées dans des bassins très fragmentaires, marqués par une halocinèse active et saccadée. La remobilisation des évaporites triasiques à différentes époques crétacées, a engendré des zones hautes diapiriques à sédimentation réduite et lacuneuse. Les corps triasiques se sont mis en place grâce à des structures diapiriques. effectuées le long de failles majeures. Ces variations ne sont pas uniquement liées aux structures en dômes triasiques mais aussi aux failles majeures qui ont délimité des hauts-fonds et des dépocentres dans un contexte distensif-décrochant.
Les faunes associées aux restes atériens d'El Harhoura 1 (Maroc) ; stratégie de chasse
Authors: Aouraghe Hassan
Published: September 2018

The fauna associed with a Aterian remains of El Harhoura 1 (Morocco) : hunting strategy. The fauna of El Harhoura 1 Aterian cave at Témara in Morocco is rich in species and in number of individuals. The diversity of the fauna shows the existence of a varied environment in this region, and the association of the species fond on the site are characteristic of the fauna of the end Pleistocene (isotopic stage 3). In all archeological levels the number of remains of certain species, notably the gazelles, are highly abundant. Therefore it could reveal a strategy of selective hunting following the size of the ani¬ mals, as adopted by prehistoric men. The quantity of conserved bones, show that whole animals were brought, in the case of the small and medium size prey.

On the mortality profile of abundant species, all age groups are represented event if the freqency of the adults dominates, wich refers to a hunting activity.
EFFECTIVENESS OF RISK CAPITAL (OWN FUNDS) IN THE POLISH BANKING SECTOR IN THE YEARS OF 2002–2016
Authors: Nocoń Aleksandra , Pyka Irena
Published: September 2018

The analysis of effectiveness of risk capital in the Polish banking sector have become the main aim of the study. In the article, statistical and econometric methods were used, based on a linear regres-sion model of net profit in relation to the value of own funds of the banking sector in Poland in the years of 2002–2016. Next, through the quartile method, there were estimated the relations between effectiveness and a level of risk capital of the largest banks in Poland. Conducted research were aimed to verify the research hypothesis stating that in the Polish banking sector there is a positive cor-relation between net profit and banks’ own funds, which constitute an essential component of bank risk capital.
TAX GOVERNANCE AS A PART OF CORPORATE SOCIAL RESPONSIBILITY
Authors: Verina Natalja , Titko Jelena , Lejniece Ilona
Published: September 2018

Nowadays, responsible business conduct and corporate social responsibility (CSR) prioritized at the governmental level. Even more and more companies now report on CSR. Financial transparency, in particular responsible tax governance considered to be as a part of CRS. Authorities propose to up-date CRS guidelines and involve guidance on responsible tax policies. The goal of the current research was to was get an insight into the understanding of CSR by Latvian business sector representatives with the particulat focus on tax management issues. Representatives of Latvian companies from dif-ferent sectors of economy were surveyed, using the authors’ developed questionnaire. The respond-ents were offered to evaluate a range of statements regarding the understanding of the CSR concept as a combination of diffrenet elements, the awareness of the European Parliament’s Directive on dis-closure of non-financial information, as well as attitude to tax management in the framework of CSR. The results of the given research provide a platform for further investigation in the field of CSR in Latvian business environment.
STRATEGIC FORESIGHT: TOWARDS ENHANCING LEADERSHIP CAPABILITIES AND BUSINESS SUSTAINABILITY
Authors: Dominiece-Diasa Baiba , Portnova Ineta , Volkova Tatjana
Published: September 2018

Organizations with well-developed strategic foresight capabilities have higher level awareness about the emerging pattern of external environment threats and opportunities and make better decisions to respond to these challenges. Scholars emphasise that even though topics on leadership and leadership capabilities have become increasingly popular, there is still little research on concepts and methods of ”futures studies”. Research purpose is to investigate the level of development of strategic foresight capabilities on the top management level in the drone industry and its application for ensuring long term business sustainability. Research methodology: a case study method and semi-structured inter-views. The main results of the research show that the drone industry applies some strategic foresight capabilities which are not fully recognized and exploited systematically by the business leaders. De-velopment and application of strategic foresight capabilities could be considered as a strategic priori-ty in the industry.
EXPERIMENTAL “BEAUTY CONTEST” GAME AND SIMULTANEOUS DECISION-MAKING WITHIN VARIOUS GROUPS
Authors: Rymanov Alexander
Published: September 2018

The paper examines experimental guessing “p-beauty contest” game. The objective of the study is to conduct an experimental study of simultaneous decision-making by subjects within various groups in the “p-beauty contest” guessing game, and to estimate the influence of various factors. The interac-tion of factors was evaluated. The contribution to this study extends the analysis of simultaneous de-cision-making by individuals within various groups to the conditions of the “p-beauty contest” game. The subjects simultaneously took decisions, while being part of a group of three subjects, and as part of a group of six subjects. The results from the experiment showed that the subjects make more ra-tional decisions, being in the larger group. The four-factor (a p-value, a group size, a period, and num-ber of subjects) experimental design shows that the Factors “p-value” and “Number of subjects” main effects were significant. Further, the Factor “p-value” by Factor “Group size,” the Factor “Group size” by Factor “Period,” the Factor “Group size” by Factor “Number of subjects,” and the Factor “Period” by Factor “Number of subjects” interactions were also significant.
PRIORITISING COMPETITIVE STRATEGIES BASED ON THE ANP APPROACH: A CASE OF THE LATVIAN TELECOMMUNICATION COMPANY
Authors: Voronova Irina , Shatrevich Vladimirs , Gavrilovs Mihails , Skvarciany Viktorija
Published: September 2018

The present study provides a comparative analysis of development strategy selection and presents an overview of multiple-criteria decision analysis (MCDA) in strategic management. The main aim of the paper is to use the analytic network process (ANP) as one of MCDA methods for determining the best strategy. Based on expert opinions and analytic hierarchy process (AHP), the authors have identified and evaluated SWOT analysis factors used for the development of a company strategy. To investi-gate the interaction of external and internal environment, the authors have used the ANP that allows obtaining relative measurement of the influence of SWOT elements. The ANP is useful with regard to interdependent relationship between multi-objectives and multi-stakeholders’ environment. The algo-rithm of quantitative evaluation of telecommunication company strategies is also presented in the paper.
THE ROLE OF INNOVATION AND ICT’S IN THE ENERGY MANAGEMENT SECTOR
Authors: Tabsh Youssef , Davidavičienė Vida
Published: September 2018

Sustainability and innovation are strongly connected in terms of productivity and finding innovative solutions for the short and the long terms. The purpose of this article is to analyze ICT models for in-novation and sustainable development processes in the energy management sector and to identify possible solutions (Lebanese case). Using the comparative analysis method, the article will illustrate the difference between using ICT models in innovation and sustainability in energy management and the previous models used for energy production and management focusing on the results after im-plementation.
PECULIARITIES OF INVENTORY MANAGEMENT STRATEGIES OF LITHUANIAN MANUFACTURING COMPANIES
Authors: Vasilienė-Vasiliauskienė Virgilija , Vasiliauskas Aidas Vasilis , Čižiūnienė Kristina , Kaknevičiūtė Greta
Published: September 2018

Inventory management and the related problems in manufacturing companies will always be a topi-cal issue. In light of the fact that the manufacturing process must be continuous, there is an emerging need to build up inventories or to solve the issue of assurance of sufficient inventories by other means. Choosing an appropriate inventory management strategy is important in pursuit of this goal. This article examines peculiarities of inventory management strategies employed by Lithuanian manufacturing companies. The purpose is to investigate, what kind of strategies and for what reasons companies are using. This purpose was achieved during the conducted study based on the application of sophisticated questionnaire. Conducted research revealed that the applicability of JIT and 3PL in-ventory management strategies in Lithuania is limited.
PRIMARY PRESUMPTIONS FOR WEBSITE OPERATOR’S LIABIILTY FOR OFFENSIVE COMMENTS
Authors: Jurkevičius Vaidas , Šidlauskienė Jūratė
Published: September 2018

In 2013 and 2015 the European Court of Human Rights (ECHR) by its judgements in the famous case Delfi AS v. Estonia admitted the possibility of liability of the Internet news portal operator for unlawful comments of users. However, just half a year later, the ECHR in MTE & Index v. Hungary case, which was, at first sight, similar, took a different decision, i.e. that the website operator could not be held liable. Finally, in 2017 the ECHR in Pihl v. Sweden case resolved a dispute over a comment posted in a blog. Thus, this article analyses, by applying the comparative method, the primary pre-sumptions for website operator’s liability established in the above mentioned cases. The authors de-fine the criteria for assessment of the context of comments and models of conduct of website opera-tors and set certain general waymarks, which could be applied in similar cases.
CONTEMPORARY QUALITY MANAGEMENT MODEL OF PROFESSIONAL SERVICES IN B2C AND B2B SYSTEMS COOPERATION
Authors: Klimecka-Tatar Dorota
Published: September 2018

In the paper the method for assessing the quality of professional services in the B2C (business to cus-tomer) and B2B (business to business) systems has been presented. The quality evaluation is ana-lyzed according to relationships in the implementation of professional medical services (medical and prosthetic service). A dependence of information flow, knowledge management has been performed as a factor that builds mutual trust between the client (patient), service provider (dentist) and subcon-tractor (dental technician). The quality management model in the context of B2C and B2B coopera-tion has been emphasized.
LEADERSHIP VALUES – THE PERSPECTIVE OF POTENTIAL MANAGERS FROM POLAND AND UKRAINE
Authors: Szydło Joanna , Widelska Urszula
Published: September 2018

In social sciences, values are perceived as constructs helpful in understanding human attitudes, views, norms and behaviors. Leadership is still current and deeply explored research problem in the science of nowadays management. The aim of the paper is to identify leadership values, using the perspec-tive of potential managers from Poland and Ukraine. Additionally, the aim of it is to systematize knowledge concerned leadership values treated as an important category functioning in management sciences. It seems to be necessary to underline that the notion of values is used by representatives of many sciences. The conclusions are supported by the results of quantitative research conducted among future managers from Poland and Ukraine. In the questionnaire, the Rokeach Value Survey (RVS) was used.
TOOLS FOR CREATING POSITIVE REPUTATION WITH CUSTOMERS FOR CHEMICAL INDUSTRIAL ENTERPRISES
Authors: Jelinkova Martina , Lostakova Hana , Pakostova Eva
Published: September 2018

The scientific literature claims that a positive reputation is based on the effective management of all elements of the so-called corporate identity, i.e. corporate philosophy, culture, design, product and communication. The aim of our qualitative research in three large chemical industrial enterprises in the Czech Republic was to identify which specific tools within their corporate identity the enterprises use and consider to be most effective for the creation of their positive reputation with customers. The result is a comprehensive overview of the tools for creating a positive reputation with customers, especially for large industrial enterprises, not only in the Czech Republic.
THE GROWTH OF COMPETITIVENESS AS A RESULT OF THE CHANGES OF WAGE AND EMPLOYMENT
Authors: Danilevičienė Irena
Published: September 2018

The concept of competitiveness is a multidimensional and is closely related to the country‘s ability to adapt to a constantly changing environment. The growth of competitiveness depends on the main aspects of wage and employment, which is influenced by micro and macro factors. The objective of this article is to assess the link between the wage, employment and competitiveness. The following tasks have been implemented: to analyse the scientific literature about competitiveness and its fac-tors; to reveal the changes of wages and employment; to assess the impact of main factors on com-petitiveness. In the article, the following methods of analysis are used: an analysis and summarize of the scientific literature, analysis of the statistical data, correlation-regression analysis.
FINANCIAL CONGLOMERATE IDENTIFICATION BY FINANCIAL MARKETS REGULATORS: CASE OF DEVELOPED AND EMERGING MARKET ECONOMIES
Authors: Kuznetsova Natalia , Pisarenko Zhanna , Lobanova Liudmila
Published: September 2018

The paper examines financial conglomerates as an innovative form of integration from different sec-tors of the world financial market. The authors reveal their features, advantages and risks. The goal of the paper is an empirical cross-country analysis of financial conglomerate identification by finan-cial markets regulators. There is no common approach to such a consolidated entity as financial con-glomerate among both researchers and regulators. The blurring of the dividing lines between financial sectors is of great importance too. The development of a conceptual apparatus, the theory and anal-ysis of a financial conglomerate has become of considerable importance.
FORECASTING CONSUMER PRICE INDEX (CPI) USING TIME SERIES MODELS AND MULTI REGRESSION MODELS (ALBANIA CASE STUDY)
Authors: Gjika Dhamo Eralda , Puka Llukan , Zaçaj Oriana
Published: September 2018

In this work we analyse the CPI index as the official index to measure inflation in Albania, Harmo-nized Indices of Consumer Prices (HICPs) as the bases for comparative measurement of inflation in European countries and other financial indicators that may affect CPI. This study is an attempt to model CPI based on combination of multiple regression model with time series forecasting models. In the first approach, time series models were used directly on the CPI time series index to obtain the forecast. In the second approach, the time series models (SARIMA, ETS) were used to model and simulate forecast for each subcomponent with significant correlation to CPI and then use the multiple regression model to obtain CPI forecast. The projection of this indicator is important for understand-ing the country's economic and social development. This study helps researchers in the field of time series modeling, economic analysis and investments.
Improved Main-sequence Turnoff Ages of Young Open Clusters: Multicolor UBV Techniques and the Challenges of Rotation
Authors: Cummings Jeffrey D. , Kalirai Jason S.
Published: September 2018

Main-sequence turnoff ages in young open clusters are complicated by turnoffs that are sparse, have high binarity fractions, can be affected by differential reddening, and typically include a number of peculiar stars. Furthermore, stellar rotation can have a significant effect on a star’s photometry and evolutionary timescale. In this paper we analyze in 12 nearby open clusters, ranging in age from 50 to 350 Myr, how broadband UBV color–color relations can be used to identify turnoff stars that are Be stars, blue stragglers, certain types of binaries, or those affected by differential reddening. This UBV color–color analysis also directly measures a cluster’s E(B − V) and estimates its [Fe/H]. The turnoff stars unaffected by these peculiarities create a narrower and more clearly defined cluster turnoff. Using four common isochronal models, two of which consider rotation, we fit cluster parameters using these selected turnoff stars and the main sequence. Comparisons of the photometrically fit cluster distances to those based on parallaxes from Gaia data release 2 find that they are consistent for all clusters. For older (>100 Myr) clusters, such as the Pleiades and the Hyades, comparisons to ages based on the lithium depletion boundary method find that these cleaned turnoff ages agree to within ∼10% for all four isochronal models. For younger clusters, however, only the Geneva models that consider rotation fit turnoff ages consistent with lithium-based ages, while the ages based on non-rotating isochrones quickly diverge to become 30%–80% younger. This illustrates the importance of rotation in deriving ages in the youngest (<100 Myr) clusters.
Geometry, Kinematics, and Magnetization of Simulated Prestellar Cores
Authors: Chen Che-Yu , Ostriker Eve C.
Published: September 2018

We utilize the more than 100 gravitationally bound dense cores formed in our three-dimensional, turbulent MHD simulations reported in Chen & Ostriker to analyze structural, kinematic, and magnetic properties of prestellar cores. Our statistical results disagree with the classical theory of star formation in which cores evolve to be oblate with magnetic fields parallel to the minor axes. Instead, we find that cores are generally triaxial, although the core-scale magnetic field is still preferentially most parallel to the core’s minor axis and most perpendicular to the major axis. The internal and external magnetic field directions are correlated, but the direction of integrated core angular momentum is misaligned with the core’s magnetic field, which is consistent with recent observations. The ratio of rotational/total kinetic and rotational/gravitational energies are independent of core size and consistent in magnitude with observations. The specific angular momentum also follows the observed relationship L/M ∝ R
3/2, indicating that rotation is acquired from ambient turbulence. With typical

, rotation is not the dominant motion when cores collapse.
Chandra X-Ray Observatory and Hubble Space Telescope Observations of the Intermediate-age Cluster GLIMPSE-C01
Authors: Hare Jeremy , Kargaltsev Oleg , Rangelov Blagoy
Published: September 2018

We report the results of Hubble Space Telescope and Chandra X-Ray Observatory observations of the GLIMPSE-C01 (hereafter GC01) star cluster. Color–magnitude and color–color diagrams suggest a cluster age of ≳2 Gyr up to ∼10 Gyr (dependent on GC01's metallicity), a distance of 3.3–3.5 kpc, and strong differential reddening with A

V
 = 14–22. After performing astrometric corrections, we find that nine of the 15 X-ray sources have at least one near-infrared (NIR) counterpart within the 2σ Chandra positional error circles. However, given the very high density of NIR sources in the cluster, most of these counterparts are likely due to chance coincidence. We jointly analyze the X-ray and NIR properties to assess the likelihood of true associations. Based primarily on their X-ray properties, we identify a low-mass X-ray binary candidate (source X2), a cataclysmic variable (CV) candidate (source X1), and an active binary (AB) candidate (source X9). Source X11 is detected during an X-ray flaring episode with a flare luminosity (L
X = 2.1 × 1033 erg s−1) and has a quiescent luminosity L
X < 8.0 × 1030 erg s−1, in 0.5–8 keV at the distance of GC01, suggesting that the source is either an AB or CV. We also discuss the limits on an intermediate-mass black hole at the center of GC01 and the challenges of X-ray source classification imposed by the limitations of the existing data and instrumentation along with future prospects in the James Webb Space Telescope era.