bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quelques remarques a propos du noyau terrestre, de la lithosphere et des theories geologiques
Authors: Perrin Rene 
Published: June 2020

Abstract
Applies experimentally proved laws of physicochemical equilibrium to an interpretation of the constitution of the earth's core and crust and concludes that the concept of a homogeneous metallic core is probably too simple a concept, that although there may be a primary discontinuity between layers at depth, no such primary discontinuity obtains in the silicate (outer) layer, and that observable discontinuities in the silicate layer are due to near-surface processes caused by erosion and sedimentation, as well as by metamorphism and granitization, which are considered due to disturbances of chemical equilibrium.
Sur l'age de la "formacion petrolifera" en Amerique du Sud
Authors: Picard L. 
Published: June 2020

Abstract
The calcareous-dolomitic member (Viticua limestone of Bolivia) of the oil-bearing formation of Bolivia-northern Argentina, which has been variously assigned to the Triassic and the Cretaceous, is Permian in age, and the sand member (Bermejo series of Bolivia) of the formation is probably Carboniferous.
La couverture post-hercynienne du massif de l'Arize en pays de Serou (Ariege)
Authors: Destombes Jean Paul 
Published: June 2020

Abstract
A detailed study of the post-Hercynian (Triassic to Cretaceous) sedimentary cover of the Arize Paleozoic massif in the Serou region, Ariege, France, shows that the major Pyrenean crustal movements in the region were pre-Cenomanian in age.
Sur une espece hauterivienne de terebratulides suisse et mediterraneenne
Authors: Catzigras France 
Published: June 2020

Abstract
A terebratulid from the Hauterivian (Cretaceous) deposits of Provence, France, and from Cretaceous localities in other parts of the Mediterranean region and in Switzerland is shown to be distinct from Terebratula praelonga, to which it has generally been assigned, and is given the name T. sanctae crucis n.sp.
Les failles du nord de la Haute-Marne
Authors: Stchepinsky Vladimir 
Published: June 2020

Abstract
The faults in the northern part of the Marne region, France, occur in Jurassic terrain and are oriented along Armorican and Variscan (Paleozoic) lines, with the exception of the Marne double fault, which traverses Cretaceous, as well as Jurassic formations, in a northsouth direction.
Sur une flore probablement rhetienne a El Galala El Bahariya (rive occidentale du golfe de Suez, Egypte)
Authors: Carpentier A. , Farag I. 
Published: June 2020

Abstract
Describes the pre-Liassic to Eocene section exposed on a scarp face on the northeast slope of the Bahariya massif, Egypt, and discusses the age, probably Rhaetic (Triassic) or possibly lowermost Jurassic, of plant-bearing beds found at the base of the series of Bathonian (Jurassic) marls. Descriptions of the plant remains are included.
La "faille de Charlemont" (Givet-Ardennes) et ses abords
Authors: Bonte Antoine , Ricour J. 
Published: June 2020

Abstract
Proves that the so-called Charlemont fault in the Givet-Ardennes region, northeast France, is not a fault or the southern margin of a thrust slice, but represents the axis of a recumbent anticline. To the west of the structure, however, there is a major fault, not previously described in the literature, for which the name Foisches fault is proposed.
Contribution a l'etude petrographique des phosphates marocains
Authors: Visse Leon 
Published: June 2020

Abstract
Study of the mineral composition, fossil content, and physicochemical conditions of deposition of the phosphate beds of Morocco leads to the conclusion that they were formed in a shallow basin. Although lithologically similar to other north African phosphate deposits, they are distinguished by a greater abundance of radiolarians and foraminifers, the presence of sponge spicules, and the abundance of detrital inclusions.
Calcaires silicifies du causse du Larzac
Authors: Bergounioux Frederic Marie 
Published: June 2020

Abstract
Concludes that silica of organic origin played a considerable role in the formation of siliceous layers and nodules in the Bajocian (Jurassic) limestones of the Larzac karst region, France, and that diagenesis of the siliceous banks and limestones was contemporaneous.
La flore eifelienne de Dechra Ait Abdallah (Maroc central)
Authors: Termier Henri , Termier Genevieve 
Published: June 2020

Abstract
Describes a plant assemblage (including Scougouphyton abdallahense n.g. n.sp. and Archaeopteris? rotundifolia n.sp.) from Eifelian (Devonian) formations of the Dechra Aiet Abdallah area, central Morocco, and discusses its affinities, with particular reference to its significance for interpreting the early history of vascular plants. The flora is transitional between Psilophyton and Archaeopteris floras, and contains elements of both.
Observations sur l'ancien volcan du Cezallier
Authors: Roux Jean 
Published: June 2020

Abstract
Concludes that the central cone of the Cezallier massif, a Tertiary volcanic mass in the Auvergne region, France, was demolished during a final phase of explosive activity, and that no flows were erupted during the Quaternary, as previously reported. Erosion of the massif during the glacial period was due to the action of a single extrusive plateau-type glacier.
Facies coralligene-oolithique et vaseux de l'Argovien et du Rauracien dans la Haute-Marne
Authors: Stchepinsky Vladimir 
Published: June 2020

Abstract
Two facies were developed in the Argovian-Rauracian (Jurassic) sequence of the Haute-Marne region, France, as a result of differences in depositional conditions created by uplift of the nearby Vosges massif. Formation of coral reefs and oolitic limestones took place in littoral zones; the calcareous marl facies to the west represents deposition in a trough.
Contribution a l'etude des schistes, calcschistes et grauwackes d'Angers; les trilobites des grauwackes d'Angers
Authors: Pillet Jean 
Published: June 2020

Abstract
Describes trilobites (including new species) from Siegenian (Devonian) graywackes of the Angers region, France. The trilobite fauna confirms the upper Siegenian age which had been assigned the graywackes on the basis of included brachiopods and other species.
La nappe du cap Sicie (Var)
Authors: Destombes Jean Paul 
Published: June 2020

Abstract
A north-south tunnel from the vicinity of La Seyne to the tip of Cap Sicie in Var, France, provides a continuous cross section of the formations encountered. In the center of the tunnel, an overturned fold caused thrusting of Silurian phyllites over the Permian. Mylonitic rocks within the phyllites are charged with quartz and very imperfectly recemented; they seem to indicate relatively superficial movement under a thin cover. To the north and south, the phyllites are massive and unbroken.
Remarques sur les schistes cristallins du cours inferieur de la Rance (Ille-et-Vilaine)
Authors: Cogne J. 
Published: June 2020

Abstract
The lower course of the Rance (Ille-et-Vilaine), France, crosses the general structure and affords excellent exposures through the zones of metamorphism in the crystalline schists. From south to north one first encounters ectinites (upper and lower mica schists), then migmatites. Petrographic study of the latter shows that they were formed by recrystallization of preexisting rocks, accompanied by slight enrichment in Ca and K.
Sur les oursins de l'Eocene moyen de Catalca-Karacakoey (Trakkya, Turquie)
Authors: Pinar Nuriye 
Published: June 2020

Abstract
Describes a sea-urchin fauna from the middle Eocene of the region between Catalca and Karacakoey, near Istanbul, Turkey. Of the 14 species described, three are new: Triplacidia trakyensis, Galeraster terkosensis, and Euspatangus rogeri. The first of these and one other species (Porosoma cribrum) represent the regular echinoids, generally rare in the Tertiary.
Description d'une nouvelle espece d'Emplectopteris, Emplectopteris ruthenensis nov. sp. (bassin houiller de Decazeville, Aveyron)
Authors: Doubinger Jeanne 
Published: June 2020

Abstract
Describes a new species of Emplectopteris, E. ruthenensis, collected from the Decazeville coal basin, France, amongst a classic upper Stephanian (Carboniferous) flora. Widespread in Permo-Carboniferous deposits of the paleobotanical province of Cathaysia, the genus was hitherto unknown in European floras. This discovery confirms several recent conclusions that distinctions between Permo-Carboniferous floral provinces are less sharp than formerly supposed.
Metallogenie hydrothermale dans les monts de Teboursouk (Tunisie septentrionale)
Authors: Bolze Jean , Schneiderhoehn Hans 
Published: June 2020

Abstract
The hydrothermal sphalerite- galena-pyrite deposits on the flanks of the Triassic Fedj el Adoun diapir in the Teboursouk mountains of northern Tunisia, post-Pliocene in age, are controlled structurally by two principal fault directions, one parallel to the diapir contact and the other perpendicular to it. Microscopic evidence indicates very low-temperature conditions of mineralization, with abnormal paragenesis of the three sulfides--first galena, then sphalerite, then marcasite-pyrite. The origin is secondary, resulting from solution and redeposition of material derived from hydrothermal ores in basement rocks, with transportation of the lead and zinc by complex chlorides. The diapirism and mineralization are closely related, having a common cause in an active fault zone. Furthermore, the presence of the diapir has affected the ore deposition in two ways--mechanically, by opening and maintaining channelways, and chemically by maintaining the salinity of the solutions.
Metallogenie hydrothermale et remaniements ascendants dans la Lozere; extension possible du processus
Authors: Geffroy Jacques 
Published: June 2020

Abstract
Study of the barite veins in the Mende-Marvejols region, Lozere, France, shows two types of mineralization, called here the "socle" (basement complex) type, probably Hercynian, and the "couverture" (sedimentary cover) type, post-Liassic. The latter is considered to be the result of reworking of the earlier deposits by ascending solutions, probably in connection with Tertiary volcanism. Complex chlorides, derived from saliferous Triassic beds, seem to have played an important role in the process. This interpretation, which is based on Schneiderhoehn's theory of secondary hydrothermal deposits, can be applied to all the lead, zinc,and barite deposits of the peripheral zone of the Central Massif.
Formations quaternaires et evolution morphologique de la moyenne vallee de l'Yonne et de la basse vallee de la Cure
Authors: Tricart Jean 
Published: June 2020

Abstract
Three types of Quaternary formations are developed in the Yonne and Cure valleys, France, for several kilometers upstream from their confluence--periglacial limestone slope deposits; coarse, dominantly calcareous valley bottom alluvium, also periglacial; and interglacial finer-grained siliceous deposits. Two periglacial phases of deposition, probably Riss and Wuerm, are distinguished, separated by a period of nominal interglacial erosion. The present streams have been unable to erode the Wuerm fill to any extent. The morphologic evolution is essentially characterized by interglacial dissection and periglacial deposition, which is also true of the rest of the eastern Paris basin, the Sarthe, and the rivers of Germany. These facts considerably restrict the application of the theory of eustatism.
Pour une representation graphique des formations sedimentaires marines [with discussion]
Authors: Dreyfuss Maurice 
Published: June 2020

Abstract
Proposes adoption of mathematical coefficients permitting graphic representation of marine sedimentation, either of a series of beds in a given region or of a particular zone over a given area. These coefficients (subsidence and accumulation, agitation of water, and nature of the bottom), although as yet approximate rather than exact figures, are sufficient to permit comparisons and correlations, at least in the case of littoral and neritic deposits.
Sur quelques trilobites nouveaux ou incompletement connus du Massif armoricain
Authors: Pillet Jean 
Published: June 2020

Abstract
On the basis of new material from the Armorican massif, France, two new species of trilobites are described--Dechenella (Basidechenella) rogeri from Devonian deposits and Phacopidella (Denckmannites) aff. volborthi from Gotlandian (Silurian) deposits. The same material has also provided additional data on the species D. (B.) andegavensis and Cryphina andegavensis, and on the characteristics of the whole genus Cryphina of the Asteropyginae.
Expression analytique generale de la granulometrie des sediments meubles; indices caracteristiques et interpretation geologique; notion de facies granulometriques
Authors: Riviere Andre 
Published: June 2020

Abstract
The granulometric composition of most unconsolidated sediments is susceptible to general analytical expression and can be represented by simple algebraic functions defined by the two indices of evolution (n) and sorting (g).In the case of fine sediments, where dispersion is weak, these functions correspond rather precisely to the actual granulometric curves. Four granulometric facies corresponding to true sedimentary facies can be defined according to the index n.
Nouvelles donnees sur les alluvions du plateau de Vassincourt (Meuse)
Authors: Paque Andre 
Published: June 2020

Abstract
The alluvial deposits of the Vassincourt plateau, France, consist of fluviatile gravels overlain by unstratified clays. The basal gravels contain a typical cold climate (tundra) fauna, which was undoubtedly contemporaneous with the great glaciation of northern Europe. The upper fluviatile deposits contain a mixed fauna and were deposited during a long interglacial period. A new glacial phase, rainy at first, produced the clays, which are both alluvial and eluvial. Subsequent uplift and erosion account for the present topography.
Le Carbonifere sur la rive gauche de la Guisane (Hautes-Alpes)
Authors: Feys Robert 
Published: June 2020

Abstract
Describes the geology of a section of the Briancon coal basin, France, as exposed along the left bank of the Guisane. On the whole, the structure is that of a vast syncline, which in detail is actually a succession of folds involving Namurian and Westphalian A, B, and C strata. The coal measures are overlain discordantly by transgressive basal conglomerates (Verrucano), cut by acid intrusions, and faulted. At the eastern border, near Granon, the basin is virtually barren.
Flore et stratigraphie du Carbonifere de la rive gauche de la Guisane (Hautes-Alpes)
Authors: Greber Charles 
Published: June 2020

Abstract
Lists plants from Carboniferous deposits of the left bank of the Guisane in the Briancon basin, France. Four stages can be distinguished on the basis of the flora: Namurian, with Sphenopteris fragilis; Westphalian A, with Neuropteris schlehani; Westphalian B, with Pecopteris pennaeformis; and Westphalian c, with Neuropteris linguaefolia.
Heterosalenia alloiteaui sp. nov. du Jurassique moyen du Liban nord et un cas de croissance excessive de plaques arretant le developpement des zones ambulacraires
Authors: Zoeke Marga E. 
Published: June 2020

Abstract
Describes a new species of echinoid, Heterosalenia alloiteaui, from middle Jurassic (probably Bathonian) deposits in northern Lebanon. One of the specimens shows an abnormal growth of plates, which interfered with development of the ambulacral zones.
Presence de caillasses a Potamides tricarinatus au sommet des calcaires de Saint-Ouen a Herblay (S-et-O.); reflexions sur la valeur stratigraphique et la synchronisation de certains termes bartoniens
Authors: Feugueur Leon 
Published: June 2020

Abstract
Discovery of Potamides tricarinatus at the top of the Saint-Ouen limestones at Herblay, France, has prompted a correlation of the Bartonian facies of the Vexin region (predominantly marine) and the Parisis region (predominantly lacustrine). The Marines sands and Bois du Mulot limestone of the Vexin region correspond to the Monceau sands and Noisy-le-Sec limestones of the Parisis region; the former overlie the Cresnes and Ruel sands, and the latter, the upper Saint-Ouen limestone. The Saint-Ouen limestone of the Vexin region corresponds to the lower Saint-Ouen limestone of the Parisis region.
Sur le Quaternaire marin de Mazagan a Mogador et sur la non-existence de l'etage "ouljien" [with discussion]
Authors: Bourcart Jacques 
Published: June 2020

Abstract
A detailed restudy of the Quaternary sections at Jorf er Reraba and Cantin cape reaffirms the conclusion that Quaternary marine deposits along the Atlantic coast of Morocco, between Mazagan and Mogador, are the product of continuous deposition in a synclinal zone which was in process of constant deformation. The so-called Ouljian stage merely represents a series of dunes which were successively sculptured by the wind out of the Quaternary sediments as they became exposed by retreat of the sea.
Quelques Proetidae (trilobites) devoniens du Massif armoricain
Authors: Pillet Jean 
Published: June 2020

Abstract
Describes nine species of Devonian Proetidae from the Armorican massif, France. These species are either new for the region, or hitherto imperfectly known, and bring the total number of Armorican Devonian trilobites to thirty. The subgenera Cornuproetus and Piriproetus are reviewed in detail.
Tectonophysique comparee des chaines telliennes et rifaines
Authors: Glangeaud Louis 
Published: June 2020

Abstract
Correlates the structure and evolution of the Atlas ranges of the Tell and Rif regions and presents a general structural interpretation of the north African coastal region. The Miocene thrusts in the south are local regional adjustments (of the fourth order) to second-order processes occurring farther to the north--compression of the Alps in upper Nummulitic time (Tertiary).
Sur la composition chimique moyenne des amphibolites
Authors: Lapadu-Hargues Pierre 
Published: June 2020

Abstract
In a majority of cases, amphibolites derived from sedimentary rocks can be distinguished from those derived from dioritic or gabbroic igneous rocks on the basis of average chemical composition. From the purely chemical point of view, it is possible to consider that eclogites result from metamorphism of certain types of heteromorphic gabbros such as the ariegites,and ultimately give rise to amphibolitic rocks. Chemical analyses are included.
Sur l'evolution granulometrique des sediments dans le bassin de la Vilaine
Authors: Lafond Louis Robert 
Published: June 2020

Abstract
Granulometric curves of modern sediments of the Vilaine river basin, France, show a transition from parabolic to logarithmic shapes, following Riviere's terminology. The latter obtain only for the fine muds toward the mouth of the estuary. From calculations of the indices of evolution (n), sorting (g), and facies (Ng), the history of the sedimentary material can be followed closely, and apparent anomalies in the curves explained. At least the detrital part (84 percent) of the estuarine muds of the Vilaine is of fluviatile rather than marine origin.
Faunule malacologique du Lutetien continental de Sainte-Madeleine (Alpes-Maritimes)
Authors: Jodot Paul 
Published: June 2020

Abstract
Describes the subtropical continental molluscan fauna (eight gastropod species) found at Sainte-Madeleine, Alpes-Maritimes, France, thus completing the data on the Lutetian (Tertiary) stratigraphy of southern France.
A propos du bassin houiller de Lons-le-Saunier [with discussion]
Authors: Friedel Edmond 
Published: June 2020

Abstract
A brief summary of the results to date of cooperative exploration of the Lons-le-Saunier coal basin in Alsace, France, by several French government organizations. The coals are lower and middle Stephanian (Carboniferous) in age. The basin trends in an east-west direction, and is bounded by faults approximately parallel to the axial direction of surface folds or, more probably, to the Bresse subsidence fault.
Les filons clastiques "intraformationnels" du "flysch" numidien tunisien
Authors: Gottis Charles 
Published: June 2020

Abstract
Describes some of the most typical of the intraformational sandstone dikes in the Numidian Flysch (Tertiary) deposits of the Kroumirie region, Tunisia. The dikes originate in sandy strata, and the youngest bed which they traverse is always argillaceous and always succeeded by a sandy layer. The fissures occupied by the dikes are attributed to earthquake shocks accompanying uplift of the adjacent land mass, which in turn caused the change in sedimentation.
Observations sedimentologiques sur la cote de la Coubre (Charente-Maritime) et son voisinage
Authors: Fridman Ruth 
Published: June 2020

Abstract
Along the Coubre coast, Charente-Maritime, France, two distinct sedimentation zones are juxtaposed--from Arvert point to the vicinity of Pavillon, sedimentation is relatively stable; farther south, in spite of contribution by the Gironde, erosion predominates. A large part of the fine beach sediments has been derived locally. Among the ephemeral beach phenomena are some which appear to be analogous to large ripple marks or beach cusps, and which seem to be controlled by local conditions of slope and angle of wind and waves.
La formation a Microcodium au pourtour de l'Argentera-Mercantour
Authors: Faure-Muret Anne , Fallot Paul 
Published: June 2020

Abstract
Discusses the stratigraphic position of Microcodium- bearing formations in the border zone of the Argentera-Mercantour massif in the French Alps, and argues in favor of an organic (algal) origin for Microcodium, which appeared in the upper Senonian (Cretaceous) and persisted, in places, until the middle or upper Lutetian (Eocene).
Etude geologique et petrographique du sill de Mirefleurs (Comte d'Auvergne)
Authors: Michel Robert 
Published: June 2020

Abstract
Geologic and petrographic study shows that the Mirefleurs lava sill southeast of Clermont-Ferrand, France, is a haueynite andesite, probably of upper Stampian (Tertiary) age. The lava is considered to have been derived from a relatively deep andesitic magma which at the same time gave rise to the peperites in upper Stampian lacustrine sediments of Limagne, as well as to surface flows. Three chemical analyses are included.
Note preliminaire sur la glaciation infra-cambrienne dans le massif armoricain
Authors: Graindor Maurice J. 
Published: June 2020

Abstract
The Infracambrian tillite in the Brioverian of the Armorican massif of Normandy, France, is part of a complex extending from Granville to Caen. The Maine conglomerates are the result of reworking of this tillite, and the Gourin conglomerate is derived from it indirectly. The relative ages of these and other conglomerates of the region are tentatively worked out. Four divisions are distinguished in the Brioverian of Normandy; the upper member is the tillite complex with its associated postglacial deposits (Laize stage).
La flore des argiles de Coulgens (Charente) [with discussion]
Authors: Depape Georges , Florschuetz Frans , Guillien Yves 
Published: June 2020

Abstract
An account of the position of the lacustrine sands and clays of Coulgens, Charente, France, which were deposited on a topographic surface in the process of rejuvenation, and the fossil flora found in the clays. Pollen analyses of one of the clays correspond to the Reuver type (upper Pliocene of the Netherlands).
Apports sedimentaires en suspension dans la Loire (annee 1953) [with discussion]
Authors: Berthois Leopold , Barbier Maurice 
Published: June 2020

Abstract
Presents and analyzes the results of measurements of the sediment load of the Loire river, France, and its relation to volume. Of the total of 421,891 metric tons of material carried in 1953, 67 percent was carried during January and February, when discharge was greatest.