bluuebunny/crossref_metadata_2025_split huggingface dataset:
L'interpretation petrographique des donnees geophysiques sur la structure de l'ecorce terrestre
Authors: Afanasev G. D. 
Published: June 2020

Abstract
The results of recent studies of elastic wave propagation within the earth are reviewed and different interpretations of the earth's interior which have been proposed, particularly in recent American works, are outlined. The results of these studies and of oceanographic work are incompatible with certain classic theories. The main facts are the differences between the continental and oceanic crust and the relatively recent (Tertiary and Quaternary) age of the great zones of continental subsidence, where a transformation from a continental to an oceanic-type crust is implied. The concept of permanent ocean basins is rejected. Differences between the continental and oceanic crust are considered essentially a function of physical state rather than petrographic composition. Continental zones that have subsided are characterized by greater seismic velocities because of the extra pressure to which they have been subjected in the course of the ages.
Un tableau stratigraphique du Primaire sur le bord nord du bassin d'Aquitaine; identification du Gothlandien
Authors: Mathieu Gilbert 
Published: June 2020

Abstract
New paleontologic data permit refinement of the Paleozoic stratigraphic section of the northern margin of the Aquitaine basin, France, and identification of Gotlandian (Silurian) deposits. The latter are well represented in the Saumort gorge (Deux-Sevres). Data on the structure and metamorphism of the area are included, together with a comparison with the Central Massif.
Etude de Paroxyclaenus, mammifere des phosphorites du Quercy
Authors: Russell Donald E. , McKenna M. C. 
Published: June 2020

Abstract
Detailed study of the almost complete skull of the type specimen of Paroxyclaenus, P. lemuroides, from the Tertiary phosphate beds of the Quercy region, France, suggests that this genus belongs among the hyopsodontid Condylarthra.
Les formations liasiques des monts des Beni-Snassene (Maroc oriental)
Authors: Monition Lucien 
Published: June 2020

Abstract
A stratigraphic study is made of the Liassic units of the Beni-Snassene massif, between Moulouya to the west and the Algerian frontier to the east. The basal Liassic beds dip 20-22 degrees N on the southern flank. In general these beds have the same dip as the Permo-Triassic magnesian limestones in the lava flows below. The presence of coarse detrital units suggests the presence of shoals in the area at the beginning of the Liassic. These units may represent the Hettangian to the Carixian (Pliensbachian). The overlying limestone-dolomite series is considered lower Domerian because it underlies limestones containing an upper Domerian Emaciaticeras fauna. The Toarcian is well represented on both the northern and southern flanks of the massif. The lithology and fossil content are described from three localities where the Toarcian is exposed. Aalenian ammonites occur in the overlying series of marls and marly limestones previously attributed to the Toarcian.
Distribution verticale des oeufs d'oiseaux fossiles de l'Eocene de Basse-Provence
Authors: Dughi Raymond , Sirugue Francois 
Published: June 2020

Abstract
A new genus--Ornitholithus--is erected from bird eggs found in the Eocene of Provence, France. Five species are described within the genus. These species belong to two different stratigraphic levels--a narrow zone of Thanetian fluvio-lacustrine deposits containing O. biroi separated by a hiatus from the overlying upper Thanetian-upper Sparnacian fluvio-lacustrine beds with O. arcuatus, O. mammosus, O. mammillatus, and O. mammeatus. The structure of sauropsid egg shells is reviewed.
Contribution a l'etude geologique du Peloponese. Terminaison paleogeographique du haut-fond du Parnasse
Authors: Dercourt Jean 
Published: June 2020

Abstract
The Parnassus massif of central Greece, a haut-fond of neritic sedimentation in the Hellenic geosyncline, lies between the Pelagonian zone, an eugeanticlinal ride, on the northeast, and the Pinde zone, an eugeosynclinal sillon, on the southwest. The Parnassus massif ends on the southeast, in the Trapezona mountains of northern Argolis, against an ophiolite massif. The northwest end likewise terminates against a greenstone massif, and may continue under the greenstone to the Montenegro high karst haut-fond region of southwestern Yugoslavia.
Apercu geologique sur les collines de Boutenac (Aude)
Authors: Combes Alain 
Published: June 2020

Abstract
The Boutenac hills in the northeastern Corbieres region of southern France, are part of the autochthonous foreland of the eastern Corbieres nappe. They are an isolated massif between the Paleozoic formations of the Alaric mountain on the west, and the Jurassic and Cretaceous formations of the Fontfroide chain on the east, entirely surrounded by alluvium. Structurally, they comprise Mesozoic formations on the east thrust over the Eocene on the west, on a fault that is the prolongation of the Saint Chinian frontal fault to the northeast. The Mesozoic formations comprise upper (?) Triassic shale and dolomite, sandy limestone, dolomite, and limestone; Jurassic red sandstones and shales; and upper Cretaceous transgressive clastics. The Eocene is limestone and marl overlain by continental conglomerate and molasse, transgressive on the west upon the Alaric Paleozoics. Folding and thrust and normal faulting are important in the structure.
Donnees stratigraphiques et tectoniques nouvelles sur la Montagne de Tauch [with discussion]
Authors: Graciansky Pierre Charles de 
Published: June 2020

Abstract
Tauch mountain southeast of the Mouthoumet Paleozoic massif, France, is composed of Aptian and Cenomanian (Cretaceous) deposits and has generally been considered a remnant of the Mesozoic sedimentary cover which formerly capped the massif. The Cretaceous deposits of the mountain are folded, and the structure may represent a second-order thrust without an overturned flank. The mechanics of emplacement are discussed.
Les formations argilo-sableuses de la base du Cretace inferieur dans le Barrois occidental
Authors: Strehly Jean , de Bretizel P. 
Published: June 2020

Abstract
Study of the lithofacies and correlation of sandy and clayey deposits at the base of the lower Cretaceous of the western Barrois region, France, lead to the conclusion that the deposits represent a facies that is transitional between the two basal Cretaceous facies of the Paris basin, the Wealden and the marine Valanginian. The deposits occur between the eroded top of the upper Jurassic and the base of the Hauterivian, and are assigned a Valanginian age.
Sur un renversement vers le nord dans le Numidien de la region de Cesaro, Monts Nebrodi (Sicile septentrionale)
Authors: Duee G. 
Published: June 2020

Abstract
Although thrust movements affecting the sedimentary series of northeastern Sicily (Italy) were generally towards the south, a contrary movement occurred in the vicinity of Cesaro after the placement of the nappes. The Numidian beds are usually overlain by a varicolored clay formation but in the Serra di Vito it underlies the Numidian. The Serra di Vito is moreover bounded on the west and south by vertical faults and it is concluded that the displaced quartzites slid northward off the uplifted block.
Comparaison entre les formations eocenes des Madonies occidentales et des monts Nebrodi (Sicile)
Authors: Broquet Paul , Duee G. 
Published: June 2020

Abstract
The Eocene Caltavuturo formation of the western part of the Madonies massif in Sicily is composed of alternating marls and limestones with increasing clay and limestone near the top. Outliers of the formation string out across the front of the Monte Soro flysch of the Nebrodi mountains to the east and are unconformable on the underlying beds. An eastern extension of the sedimentary environment responsible for the Madonies facies is suggested by the outliers.
Exemple de gisements plombo-zinciferes epigenetiques dans des niveaux calcaires de sillon subsident; les mineralizations du Diois et des Baronnies
Authors: Rouvier Henri 
Published: June 2020

Abstract
The mineralization of Diois and Baronnies (France) is examined on the individual specimen, bed, and regional levels. The mineral composition consists essentially of zinc blende, galena and pyrite with some marcasite in a calcitic gangue. Study of galena and calcite samples indicates a low temperature of deposition. Three phases of mineral concentration are hypothesized; precipitation of water-dissolved metallic ions by hydrosulfuric acid; upper Eocene deposition of lead and zinc concentrations along faults by ground water; and upper Miocene to Recent superficial alteration of the beds.
Nouvelles donnees stratigraphiques sur la region de Bobbio (Apennin septentrional, Italie)
Authors: Labesse Bernard , Magne J. 
Published: June 2020

Abstract
The Bobbio region of the northern Apennines of Italy is one of the most significant examples of Apennine structure but the stratigraphy of the region has been poorly known. The Macigno sandstone exposed in a fenster in the Trebbia valley south of Bobbio contains an Oligocene microfauna. The Penice mountain series is Lutetian (middle Eocene). The Bobbio clays, resting upon the Macigno sandstone in the fenster, are Oligocene, but include interstratified beds of reworked Lutetian sediments.
Existence dans le sous-sol de Clermont-Ferrand (Puy-de-Dome) d'une fosse quaternaire recente
Authors: Rudel Aime 
Published: June 2020

Abstract
Cores drilled in the Jaude-Salins section of Clermont-Ferrand (central France) penetrated more than 30 meters of marsh sand, loam, and volcanic cinders without reaching the Oligocene substratum. The depression in which these sediments were deposited borders the Puys volcanic chain and is probably the result of recent Quaternary subsidence, a conclusion suggested by the position of the depression on the Clermont fault and its coincidence with a zone of hot springs.
Quelques resultats de l'etude du Quaternaire du Bas-Dauphine
Authors: Bravard Yves 
Published: June 2020

Abstract
Morphologic research in the Bas-Dauphine area (southeast France) produced no trace of pre-Mindel glaciation. Since no beveled surfaces were found in the extra-Rhodanian part of Bievre-Valloire, it can be concluded that the Isere river followed its present course even before the Mindel. Discovery of additional terrace deposits makes possible the extension of the Mindel terrace at Fouillouse into the Saint-Lattier region. The absence of eolian loams between Saint-Sauveur and Saint-Hilaire-du-Rozier indicates that the surface of the Rissian terrace was reworked during the Wuerm because of its position in front of the frontal Wuermian lobe. The effects of temporary streams emitted from the Wuermian glacier are recognized in the extensive kame terrace deposits.
Le genre Bunolistriodon Arambourg 1933
Authors: Arambourg Camille 
Published: June 2020

Abstract
The remains of a Burdigalian giant pig were found near Zelten (Libya). A skull, notable for the presence of conical superorbital protuberances and by the reduction of the anterior skull, confirms that it is of the genus Bunolistriodon. The precision of the features clearly distinguishes it from the zygolophodont genus Listriodon.
Le passage toarcien-aalenien et l'age des calcaires a Cancellophycus dans la region de Macon (Saone-et-Loire)
Authors: Elmi Serge , Mouterde R. 
Published: June 2020

Abstract
Lithologic studies and paleontologic studies of ammonites from a section between Vergisson and Davaye have provided more detailed information on the stratigraphy of the upper Toarcian and lower Aalenian in Macon (central France). The upper boundary of the Toarcian is marked by the Pleydellia buckmani bed recognized for the first time at the eastern border of the French Central Massif. The Tmetoceras scissum zone is recognized in the Aalenian. The Cancellophycus limestones represent the basal Ludwigia murchisonae zone (Costileioceras sinon bed) and the T. scissum zone. Two tables show proposed correlations between Macon, Mont d'Or, and the southern Jura mountains.
Donnees nouvelles sur l'age de l'apparition du facies flysch dans la zone de Gavrovo-Tripolitsa (massif du Klokova, Acarnanie, Grece)
Authors: Bizon G. , Dercourt Jean , Neumann M. 
Published: June 2020

Abstract
Between the upper Lutetian-lower Priabonian limestones with algae and nummulitids and the upper Eocene flysch is a transitional unit of alternating carbonate beds and thin marl layers containing pelagic foraminifera. The presence of Pellatispira madaraszi clearly indicates a Priabonian age for these beds. The lower marly beds of the overlying flysch contain planktonic foraminifera which suggest either an upper Eocene (Globorotalia turritilina zone) or lower Oligocene (Globorotalia oligocenica zone) age. Text-figures illustrate Globigerina cf. yeguaensis pseudovenezuelana, G. cf. tripartita tapuriensis, and G. gr. tripartita.
Note sur l'existence d'un paleodome dans la region de Burguete-Arive-Arrieta (Pyrenees basques espagnoles) et ses relations metallogeniques avec les mineralisations peripheriques
Authors: Chesterikoff Andre 
Published: June 2020

Abstract
Tetrahedrite, bornite, chalcopyrite, cinnabar, galena, sphalerite, celestite, and barite occur in fractured and faulted Triassic and Cretaceous formations on the flanks of the Oroz-Betelu anticline in northern Spain. The oldest formations exposed in the anticline are Devonian karstic limestone and clastics, intensely folded by the Hercynian orogeny and truncated by an erosion surface. Lower Triassic clastics rest upon the erosion surface, and are surrounded by a peripheral zone of upper Cretaceous limestone and dolomite outcrops. Late Cretaceous and Paleocene flysch, in turn, surround the older formations of the anticline. Cinnabar was deposited with quartz and chalcedony after copper mineralization, and does not occur in the tetrahedrite.
Structures plissees et successions granitiques dans les terrains metamorphiques des monts du Forez (Puy-de-Dome)
Authors: Boyer Claude 
Published: June 2020

Abstract
The Forez massif, between Limagne de Loire and Ambert, France, is surrounded by a biotite granite. Two different zones are distinguished. To the east is a complex region formed of gneiss and granite bands while to the west there is a two-mica granite with xenoliths of rock from the eastern sector. The western zone is faulted against the sedimentary series of the Ambert plain. The composition of the facies in the two zones ranges from metamorphic rocks and rocks derived from them, to rocks fitting the definition of true granites. The facies are the result of two phases of granitization influenced by the N-S isoclinal folds of the mountains east of Ambert overturned toward the interior of Forez.
La faune d'ostracodes de quelques gisements du Campanien superieur du bassin de Paris
Authors: Damotte Renee 
Published: June 2020

Abstract
Six upper Campanian (upper Cretaceous) localities in the Paris basin, France, have yielded an abundant ostracod fauna characteristic of the Belemnitella mucronata zone. The forms collected are benthonic, typical of carbonaceous chalk sedimentation in which species are numerous but individuals are few. The fauna is different from that of the lower Campanian and Montian limestones. Thirty-two species, 18 of which are illustrated, are listed in a table showing their distribution in the outcrops studied.
Preuves paleontologiques nouvelles de l'age tertiaire (Eocene superieur) des couches a troncs d'arbres silicifies du Tinr'ert occidental (Sahara central)
Authors: Lefranc Jean Philippe 
Published: June 2020

Abstract
A formation containing silicified tree trunks, previously considered as Cretaceous, Tertiary, and Quaternary by various authorities, can now be assigned with certainty to the upper Eocene. It contains the first occurrence of Euphorbioxylon reported in Africa north of the equator.
Les ordanchites et roches affines du massif du Cantal
Authors: Goer de Herve Alain de , Vatin-Perignon Nicole 
Published: June 2020

Abstract
The ordanchites (tephrites with haueyne) of the Cantal [massif, Central Massif of France] are limited to the deposits at Pailherols, Falgoux, Limon, and Gelneuf-le Chaumeil-Brujalaine. Very homogeneous despite their apparent variations in facies, these are all leucocratic rocks, subplagioclasic, with augite and hornblende. The other 'andesites with haueyne' or tephrites, cited in the literature [on this area], are actually labradorites (l'Heritier), basic andesites (La Chevade), aphyric basalts or latites (Prat-de-Bouc).
Remarques sur la diagnose d'Amussium subpleuronectes (d'Orb.), pectinides, lamellibranches
Authors: Anglada Roger , Catzigras France 
Published: June 2020

Abstract
Amussium subpleuronectes (d'Orbigny), a pectinid from the Oligocene of southern France, is a very polymorphic species. However, the absence of a dentate crest in the right valve and the size of the auricles in relation to the antero-posterior diameter of the shell are constant characteristics of specific value.
A propos de l'anciennete de la flore continentale; decouverte de 'charbons' et de 'phytomorphes' dans le Francevillien (Precambrien du Gabon)
Authors: Feys Robert , Greber Charles , Pascal Michel 
Published: June 2020

Abstract
Plant organs, one of which seems to be a prothallus, another a section of a rachis, have been found in the Precambrian of Gabon. Some 'coals' from the same region seem to have been formed by botryococcal algae. The authors briefly review the various known very ancient 'coals'. Conclusions are drawn concerning the antiquity of the continental flora.
Sur la genese des gisements de bauxite du sud-est de la France
Authors: Valeton Ida 
Published: June 2020

Abstract
The bauxites of southern France--in particular those of upper Var--result from the alteration of lateritic soils formed at the expense of various rocks from crystalline and crystalline-phyllitic massifs (notably the Maures-Esterel of the Brignoles region). The resulting detrital grains are of varied granulometric and mineralogic composition; they have been transported into vast basins formed on surfaces of Jurassic and basal Cretaceous limestone karst into which they were deposited. Various hydrostatic levels in different basins have caused, during the course of diagenesis, modifications in structure and chemical and mineralogic composition (gibbsite, boehmite, and diaspore facies of the bauxites). The intensity of development is related to erosion that has acted mainly in a vertical direction; it has been controlled by subterranean karst drainage. Post-diagenetic effects, such as the mobilization of iron and the formation of terra rossa, have caused the formation of polygenetic soils.
Contribution a la connaissance des cephalopodes cretaces du sud-est de la France; a propos de deux specimens interessants d'ammonites du Cretace inferieur des Basses-Alpes
Authors: Thomel Gerard 
Published: June 2020

Abstract
The validity of Ammonites julianyi [now Valdedorsella cf. julianyi] is discussed with reference to research on the types of the Honnorat-Bastide collection at the Digne museum. A new specimen is figured. A special form of Neocosmoceras [N. cf. sayni] from the Berriasian of the Jabron valley (Basses-Alpes) is described.
Contribution a l'etude tectonique du versant nord du massif de la Lare; les collines d'Encauron et des Lagets
Authors: Aubouin Jean , Chorowicz Jean , Le Dore Nicole 
Published: June 2020

Abstract
The Encauron Jurassic hills are allochthonous on the upper Cretaceous Etienne syncline which borders the Lare anticline on the north. The Lagets hills are autochthonous--relatively--and represent the north flank of the Etienne syncline and the south flank of the Huveaune Triassic belt. Superposed tectonic phases are emphasized, being represented by three successive groups of structures: overthrusts, folds, fractures. After an account of the historical geology, the Encauron hills are compared with the Sainte Baume series.
Etude micropaleontologique et illustration des filons-couches granoclasses du Capo Sant'Andrea (Sicile)
Authors: Sigal Jacques , Truillet Rene 
Published: June 2020

Abstract
Sedimentary sills in the vicinity of Taormina contain material which exhibits graded bedding and ranges in age from Dogger-Malm (Jurassic) to Paleocene-Ypresian (Eocene). The sills parallel the dip of the encasing rock, and the filling material is composed of superposed sequences of limestones containing globigerinids, globotruncanids, and guembelitriines (foraminifera). Reworked material is found predominantly at the base of the sills. The sills are probably the result of tectonic disturbances in the Cretaceous which opened fractures in the Mesozoic rocks in which they occur. The absence of lateral gradation in addition to the vertical grading suggests that the filling sediments were in homogeneous suspension in the turbulent waters which circulated in the fractures. The turbulence may be due to either climatic or paleoseismic phenomena.
La marge orientale du causse Méjean et du causse Noir. Stratigraphie et paléogéographie du Lias et de l' Aalénien-Bajocien dans la région de Meyrueis (Lozère)
Authors: Fleury Jeas-Jacques 
Published: June 2020

Sommaire
L'étude de coupes lithostratigraphiqucs, entreprise à l'occasion de la carto­graphie de la bordure orientale du causse Méjean et du causse Noir, a conduit à distinguer de notables variations d'épaisseur et de faciès dans la série liasique de cette région. Ces diverses modifications sont en rapport avec une côte, ou un haut-fond, situé vers l'Est (à l'emplacement des Cévennes actuelles) et un "talus" jalonnée par les failles d'un faisceau d'orientation NNE­SSW qni s'observe depuis Mende jusqu'à Nant et passe par Meyrueis.
Intra-specific comparison of mitochondrial genomes reveals host gene fragment exchange via intron mobility in Tremella fuciformis
Authors: Deng Youjin , Zhang Xunxiao , Xie Baogui , Lin Longji , Hsiang Tom , Lin Xiangzhi , Lin Yiying , Zhang Xingtan , Ma Yanhong , Miao Wenjing , Ming Ray 
Published: June 2020

Abstract
Background: Mitochondrial genomic sequences are known to be variable. Comparative analyses of mitochondrial genomes can reveal the nature and extent of their variation.Results: Draft mitochondrial genomes of 16 Tremella fuciformis isolates (TF01-TF16) were assembled from Illumina and PacBio sequencing data. Mitochondrial DNA contigs were extracted and assembled into complete circular molecules, ranging from 35,104 bp to 49,044 bp in size. All mtDNAs contained the same set of 41 conserved genes with identical gene order. Comparative analyses revealed that introns and intergenic regions were variable, whereas genic regions (including coding sequences, tRNA, and rRNA genes) were conserved. Among 24 introns detected, 11 were in protein-coding genes, 3 in tRNA genes, and the other 10 in rRNA genes. In addition, two mobile fragments were found in intergenic regions. Interestingly, six introns containing N-terminal duplication of the host genes were found in five conserved protein-coding gene sequences. Comparison of genes with and without these introns gave rise to the following proposed model: gene fragment exchange with other species can occur via gain or loss of introns with N-terminal duplication of the host genes.Conclusions: Our findings suggest a novel mechanism of fungal mitochondrial gene evolution: partial foreign gene replacement though intron mobility.