bluuebunny/crossref_metadata_2025_split huggingface dataset:
Observations et hypothese au sujet de la serie cretacee de la Bigorre
Authors: Dreyfuss Maurice 
Published: June 2020

Abstract
Concludes that the Cretaceous of the Bigorre region, France, is composed of a continuous series ranging from lower Cretaceous Aptian strata to upper Cretaceous Flysch deposits and that Cretaceous breccias of the region are not tectonic in origin but were formed at several different times by deposition of detrital material derived from pre-Cretaceous masses, which were present as topographic highs in the depositional basin.
Sur quelques gisements lorrains de roches carbonatees a structure cone-in-cone
Authors: Maubeuge Pierre L. 
Published: June 2020

Abstract
Data obtained from study of the stratigraphic relations of Triassic and Liassic formations characterized by the presence of cone-in-cone structures in Lorraine, France, support the conclusion that the cone-in-cone structures are the product of mechanical processes related to differential deformation of over- and underlying more rigid layers.
Recherches sur quelques calcaires lacustres du bassin de la Loire
Authors: Bourcart Jacques 
Published: June 2020

Abstract
An account of the composition and formation of Eocene and Oligocene lacustrine limestones of the Loire basin, France. It is concluded that the limestones were formed from detrital material and that silicification was due to the presence of an abundance of diatoms in the lake waters.
La genese et l'evolution des gisements de nickel de la Nouvelle-Caledonie
Authors: Chetelat E. de 
Published: June 2020

Abstract
The nickel ores of New Caledonia are the product of concentration of hydrous nickel and magnesium silicates during laterization of peridotite. The ore minerals are primary magmatic constituents of the parent rock, which is considered to have been intruded in the Tertiary. Serpentinization of the peridotite plays only a minor role in the genetic process; impermeable serpentinized zones acted as a barrier to the further migration of nickel-bearing solutions and thus aided concentration.
Le Lias inferieur des Cevennes aux environs d'Ales (Gard)
Authors: Brousse Marcel 
Published: June 2020

Abstract
Field work in the vicinity of Ales in the Cevennes mountains, France, shows that some of the strata previously mapped as middle Liassic are lower Liassic in age. Annotated faunal lists supporting the lower Liassic age of proposed revisions are given.
Observations sur la ride triasique de Belus (Landes)
Authors: Dupouy-Camet Jacques 
Published: June 2020

Abstract
Recent borings along a north-south line in the Belus region, Landes, France, show that a Triassic diapir is wedged into the core of the Belus fold. The upper Cretaceous and Tertiary formations of the Belus-Saint-Lon region were subjected to four stages of tectonic activity. Injection of the diapir structures probably took place during Aquitanian crustal movements (the last of the four stages).
Massif granitique du Lys-Caillaouas dans la Haute-Garonne
Authors: Raguin Eugene , Destombes J. P. 
Published: June 2020

Abstract
The Lys-Caillaouas granitic massif in the upper Garonne region, France, is characterized by the presence of intercalated lenses of gneiss and peripheral aplite dikes (granulite). The massif is considered an intermediate type, possessing characteristics of both migmatite masses and intrusive bodies, whose formation took place during the principal phase of Hercynian (late Paleozoic) folding.
Observations stratigraphiques sur la couverture tertiaire du dome de Villagrains-Landiras (Gironde)
Authors: Vigneaux Michel 
Published: June 2020

Abstract
Describes the Tertiary section revealed by a boring in the axial zone of the Villagrains-Landiras anticline in the Aquitaine basin, France. The anticline was a land mass from the end of the Cretaceous until the Stampian (Oligocene) after which it was partially or completely covered by transgressing seas until the Aquitanian (Miocene). Uplift took place after the Aquitanian.
Une coupe transversale naturelle du versant S du massif de la Tete de Gaulent (Hautes-Alpes); la rive gauche du torrent de Tramouillon pres de Saint-Crepin
Authors: Debelmas Jacques 
Published: June 2020

Abstract
Describes and illustrates a crosssection of the south slope of the Tete de Gaulent massif in Hautes-Alpes, France, exposed along the right bank of the Tramouillon torrent near Saint-Crepin. Two Brianconnais nappes are superposed, with a zone of thrust slices lying between. Several repeated series in the high massif are interpreted as frontal crenulations of the upper nappe. Gliding took place along Carboniferous beds, which are laminated and attenuated.
Les phenomenes littoraux dans la zone internationale de Tanger (Maroc)
Authors: Lafond Louis Robert 
Published: June 2020

Abstract
Analyzes shore processes along the coast in the vicinity of Tangier. Sandy sediment is produced and transported mainly by marine currents and waves, and to some extent by eolian action by the east winds; the fluviatile contribution is negligible. Construction of a breakwater has upset the sedimentary equilibrium and cut off the great beach at Tangier from its normal source of supply. As a result, transfer of sand within the bay is limited to the perimeter of the beach; erosion is taking place at the eastern end, sedimentation at the western, and a new beach is being built up east of the jetty. Although some silting of the roadstead has begun, it is predicted that this will diminish and not seriously affect the port.
Recentes variations du niveau des mers et des terres
Authors: Cailleux Andre 
Published: June 2020

Abstract
Measurements of mean sea level from 1885 to 1951 reveal a eustatic rise of 1.3 mm per thousand years, probably due in part to the rapid melting of glaciers in recent time. Superposed on this are the effects of regional deformation, which, apart from isostatic adjustment to deglaciation, consist of subsidence in areas of heavy sedimentation (up to a maximum of 4.1 mm) and uplift along rocky coasts where sedimentation is negligible (up to 3.77 mm). The present rate of change is of the same order as that associated with past transgressions of the sea and epeirogenic and orogenic movements.
Les formations plio-quaternaires de la region d'Antibes
Authors: Ottmann Francois 
Published: June 2020

Abstract
The Antibes region, a vast syncline, is the only part of the French Mediterranean coast where a complete Plio-Quaternary series was deposited. Details of the marine transgressions and regressions, as worked out from the stratigraphic column, are presented. The Plaisancian blue marls and Vaugrenier sands mark maximum Pliocene and Quaternary transgressions, respectively; maximum emersions are indicated by late Pliocene oxidation of the blue marls and by Quaternary continental deposits.
A propos de l'histoire du continent africain
Authors: Termier Henri , Termier G. 
Published: June 2020

Abstract
The definition of a unit of structural evolution which can be applied to Precambrian as well as to younger areas is discussed, and the spatial unit "orogen" is selected as the most suitable term for such a unit. It means any zone in which orogenic movements occur. This term is broader than "geosyncline," for such movements are not limited to geosynclines. The orogens of the different parts of the earth vary greatly in dimension, form, and situation with respect to older zones. The stages of a "drama" (a term preferred to "orogenic cycle") are outlined and applied to an interpretation of the history of the African continent.
Contribution a l'etude stratigraphique et structurale du detroit soudanais [with discussion]
Authors: Radier Henri 
Published: June 2020

Abstract
The Sudan trough in French West Africa is located between the central Saharan massif and the west African shield. It was produced in a zone of weakness in a vast rigid group of crystalline rocks and has been in existence since Cenomanian (Cretaceous) time. Sedimentation in the trough has been sporadic; the formations are neither extensive nor thick. Structural phases strongly developed in the northern part of the central Saharan massif are weakly recorded here.
Famennien terminal aux environs de Beni-Abbes (Sahara nord-occidental)
Authors: Petter-Receveur Germaine 
Published: June 2020

Abstract
Describes the sections and ammonite faunas of two uppermost Famennian (Devonian) localities near Beni-Abbes (Algeria) in the northwestern Sahara. The impoverishment of the faunas and the development of sandy facies within the sections were caused by fluctuations of the bottom of the depositional basin, whose maximum amplitude occurred at the end of the Devonian or the beginning of the Carboniferous.
Sur l'age de l'ankaratrite de Rougiers (Var) et ses relations avec le Trias environnant
Authors: Gueirard Simone 
Published: June 2020

Abstract
The folded and fractured Triassic formations in the vicinity of Rougiers, Var, France, are covered locally by a flow of ankaratrite which issued along a fault cutting the eastern end of the Sainte-Baume massif. The age of the fault, and consequently that of the flow, is Nummulitic (Eocene or post- Eocene). Igneous pebbles in the upper Muschelkalk attest to an earlier volcanic episode which took place in the Triassic (probably Muschelkalk).
Existence de l'Eocene moyen et superieur dans la region de Redjas-Ferada au NW de Constantine (Algerie) [with discussion]
Authors: Durozoy Guy , Magne Jean  
Published: June 2020

Abstract
On the basis of their microfauna, the black marls overlying lower Eocene limestones in the Redjas- Ferada region of northwestern Constantine, Algeria, are assigned to the middle and upper Eocene. This necessitates readjustment of previous paleogeographic concepts.
La geologie du sous-sol de Saucats (Gironde)
Authors: Magne Andre , Mattauer Maurice , Moyes Jean 
Published: June 2020

Abstract
Describes and interprets the Tertiary section encountered in drilling for water at Saucats, Gironde, France. From top to bottom, marine Burdigalian, marine and lacustrine Aquitanian, and marine upper Oligocene were traversed. The boundary between the Miocene and Oligocene is gradational. The section indicates that deposition took place in a deep synclinal basin.
Quelques observations sur la mobilite et la diffusion du potassium au cours du metamorphisme
Authors: Dutt Amitava 
Published: June 2020

Abstract
The mobility and diffusion of potassium during metamorphism has been studied by means of measurement of radioactive K &lt;sup&gt;40&lt;/sup&gt; , which bears a constant relation to total percentage of potassium, in the metamorphic rocks of the Mount Sorrel district, Leicestershire, England.
Une operculine cordelee de l'Eocene inferieur de la Cote-d'Ivoire, Operculina (Nummulitoides) tessieri n. subgen., n. sp
Authors: Abrard Rene 
Published: June 2020

Abstract
Describes a new spiral operculine foraminifer from lower Eocene deposits of the Ivory Coast, French West Africa, Operculina (Nummulitoides) tessieri, n.subg. n.sp.
Les trilobites Otarionidae du Devonien armoricain
Authors: Pillet Jean 
Published: June 2020

Abstract
Recent work has made it possible to determine the Devonian representatives of the trilobite family Otarionidae from the Armorican massif, France. Most of the material consists of isolated or fragmentary specimens. Of the eleven different Devonian forms, eight are identified specifically, among them a new species, Otarion (Otarion) ferronnierense, from the base of the middle Devonian.
A propos des migmatites pyreneennes
Authors: Zwart Hendrick J. 
Published: June 2020

Abstract
Observations in the Saint-Barthelemy massif (France) and in other localities in the Pyrenees indicate that metasomatic enrichment in silica and soda (of the order of some 5 to 10 percent) caused alteration of schists into migmatites characterized by a quartz diorite composition. The veinlets in the migmatites are replacement phenomena. Two phases of recrystallization are recognized, a synkinematic phase which caused formation of the schistose migmatites, and a static phase in which these were in part recrystallized to massive rocks. In mica schists, the static phase produced andalusite.
A propos de la theorie bio-rhexistasique
Authors: Termier Henri , Termier G. 
Published: June 2020

Abstract
The formation of siliceous crusts, such as that of the Eyre lake basin in Australia, and other examples of silicification can probably be explained by the bio-rhexistasy theory. On the other hand, tropical vegetation and weathering do not seem to affect the sedimentary regime off the coast of Indonesia, as would be expected according to the theory. It is concluded that the theory is valid for stable areas, but that the nature and regime of sedimentation in unstable areas are largely a function of orogenic and probably also epeirogenic activity.
Sur l'origine des impregnations uraniferes des schistes houillers de Saint-Hippolyte (Haut-Rhin)
Authors: Grimbert Arnold 
Published: June 2020

Abstract
The origin of the low-grade uranium mineralization in Carboniferous shales of the Saint-Hippolyte area, France, is still in doubt. Two plausible explanations are outlined, and it is stressed that a sedimentary origin cannot be ruled out in spite of the presence of sulfides, generally considered an index of hydrothermal origin.
Contribution a l'etude des formations quaternaires du Bas-Languedoc
Authors: Riviere Andre , Vernhet S. 
Published: June 2020

Abstract
The Quaternary terrace deposits on the east shore of the Paurel lagoon in the lower Languedoc region, France, are characterized by angularity of their elements, and seem to be lagoonal-limnic deposits almost identical with those forming today. Individual outcrops are described, and shore-line fluctuations (due predominantly to eustatic changes of level) are traced.
Trois especes nouvelles de Proetidae (trilobites) devoniens
Authors: Pillet Jean 
Published: June 2020

Abstract
Describes three new species of trilobites from Emsian (Devonian) limestones of the Chauffour quarry, Angers, France--Proetus (Proetus) aplanatus, P. (P.) pseudotenuis, and P. (P.) rogeri.
La symetrie et le developpement de l'appareil septal chez quelques polypiers anthozoaires de la famille des Stylinidae
Authors: Lafuste Jean 
Published: June 2020

Abstract
Study of corals belonging to the family Stylinidae from Sequanian (Jurassic) deposits near La Rochelle, France, has led to the creation of the subgenus Heliostylina, characterized by transitory bilateral symmetry of the septa. This bilateral symmetry is a fundamental feature but may be masked by the hexaradial symmetry of the adults in some forms.
Presence de differents types d'accidents siliceux dans le Senonien superieur de Dumes (Landes)
Authors: Boulanger Dominique , Deicha G. 
Published: June 2020

Abstract
Describes different types of quartz concretions and cherts in upper Senonian (Cretaceous) limestone in the vicinity of Dumes, France. They are due to recrystallization in place at moderate temperatures and pressures, In no case are they the product of soil-forming processes.
Observations sur deux niveaux mineralises dans le Paleozoique inferieur des monts du Minervois (Montagne Noire, Aude); mineralisations, lithologie et stratigraphie; contribution au debat syngenese-epigenese
Authors: Boyer Francois , Routhier P. 
Published: June 2020

Abstract
A sparsely mineralized zone consisting essentially of galena, pyrite, and barite occurs at the top of an upper Georgian (Cambrian) calcareous dolomite sequence in the Minervois mountains, southwestern Montagne Noire region, France, and can be followed for more than 12 kilometers. Its constant association with a particular lithofacies suggests that the mineralization is syngenetic. Another zone of galena and sphalerite mineralization is localized in recrystallized limestone and nodular calcareous schists, attributed to the middle Tremadocian, and can be followed for more than three kilometers. this zone also appears to begenetically correlative with sedimentologic and paleogeographic conditions.
Quelques remarques relatives a la geochimie des filons epithermaux a pechblende
Authors: Geffroy Jacques , Sarcia J. A. 
Published: June 2020

Abstract
The Erzgebirge pitchblende veins were emplaced during the Hercynian orogeny (Paleozoic) or during a late Hercynian cycle, contemporaneously with the Erzgebirge granites. Deposits like those of the Limousin region, France, are much younger than the enclosing granites. The Erzgebirge-type ores (Germany; Cornwall), characterized by Ni-Co-Bi-Ag-U, have been, or are, producers of tin, with accessory tungsten, whereas the Limousin-type ores (Portugal; France) produce tungsten with accessory tin. The Limousin-type ores are attributed to late-stage leaching from granitic zones subjected to large-scale deformation; they are therefore associated with zones of mylonization.
Les phases tectoniques du NE du Devoluy et leur influence structurologique
Authors: Glangeaud Louis , d'Albissin M. 
Published: June 2020

Abstract
A detailed study of the structure of the northeastern part of the Devoluy region, France, shows that the superimposed effects of different tectonic phases (Turonian and Alpine) can be recognized on the scale of the fold and of the microfold. Geodynamic solutions are proposed for analysis of the effects of erosion, differential behavior of limestones and plastic beds, landslides, and isostatic readjustment which intervened during deformation.
La subsidence du recif campanien de Vigny [summ.] [with discussion]
Authors: Marliere Rene 
Published: June 2020

Abstract
Study of the reef complex exposed in the Bois des Roches quarry in the Vigny region, France, shows repeated variations of depositional conditions, successive phases of penecontemporaneous erosion, and ruptures in the peripheral zone and in overlying beds. The age is undoubtedly Campanian (Cretaceous); arguments to the contrary are refuted.
Narbonne a Perpignan, par Durban, Leucate-Plage, Treilles, Fitou, Salses et Rivesaltes
Authors: Barrabe Louis 
Published: June 2020

Abstract
Reports geologic features observed along the route of the eastern Pyrenees excursion of the Societe Geologique de France in September 1958, from Narbonne to Perpignan (via Durban and the Leucate marsh).
Observations petrographiques nouvelles sur les niveaux saliferes du Trias moyen de Lorraine
Authors: Laugier Raymond 
Published: June 2020

Abstract
Deep wells in Lorraine, France, at distances of some 70 kilometers from each other, traverse the middle Muschelkalk (Triassic). Oolitic horizons were encountered in beds of the anhydrite group of the salt formation associated with the so-called Pexonne clays. The sections in three wells are described in detail, and the dolomitic oolites are discussed. Several epigenetic stages of replacement and mechanical deformation are recognized in the oolitic horizons.
La flore fossile du bassin houiller de Montvicq-Doyet-Bezenet (Allier)
Authors: Freytet Pierre 
Published: June 2020

Abstract
The plants represented in six fossiliferous localities in the Montvicq-Doyet-Bezenet coal basin of Allier, France, are upper Stephanian (Carboniferous) in age, and the flora is very similar to that of the Commentry basin.
Les bryozoaires aquitaniens de Qoum (Iran)
Authors: Furon Raymond , Balavoine P. 
Published: June 2020

Abstract
Of the 37 species identified in the bryozoan fauna from Aquitanian (Tertiary) marls of Qoum, Iran, 16 are cyclostomes and 21 are cheilostomes. The cyclostomes are not good guide fossils in that six of the species are still living (four since the Cretaceous). Fifteen of the cheilostome species have existed since the beginning of the Miocene.
Quelques considerations sur la vie recifale au Miocene dans le bassin mediterraneen
Authors: Chevalier Jean Pierre 
Published: June 2020

Abstract
The stages of reef formation are outlined on the basis of observations on Miocene reefs of the western Mediterranean basin. At a depth of about 100 meters there is a zone in which reef and nonreef facies can coexist. The paleoecologic conditions of a given stratigraphic horizon can be reconstructed from detailed analysis of reef and subreef layers.
Contribution a l'etude geologique de l'ile Espiritu Santo (Nouvelles-Hebrides); 2, Roches volcaniques
Authors: Sagatzky Jean 
Published: June 2020

Abstract
Continuation of a study of the geology of Espiritu Santo in the New Hebrides; deals with the volcanic rocks of the island. The rocks identified in the volcanic complex are andesites, labradorites (basalts), and associated tuffs. Most of them are older than the Miocene limestones of the island. The constituent and accessory minerals of each are listed.
Le Tertiaire du bief des Lavaux (pres de Pontarlier) et ses relations avec la tectonique du Jura
Authors: Chauve Pierre 
Published: June 2020

Abstract
Outcrops of marine and lacustrine Tertiary formations discovered in the Lavaux stream valley near Pontarlier, France, constitute evidence of two orogenic phases. The first took place in middle or upper Oligocene time and was followed by a marine invasion; the second occurred before deposition of upper Tortonian or Pontian sediments. These phases correspond well with those established for other parts of the Jura mountains, the first of which is considered due to vertical movements, the second to tangential movements.
Le milieu et le developpement des orbitolines (foraminiferes)
Authors: Rat Pierre 
Published: June 2020

Abstract
Study of orbitolines in many Cretaceous localities of northern Spain shows that these foraminifera flourished in very diverse marine environments, at shallow depths but beyond the turbulent littoral zone. Many variations may exist within a single species in a given deposit. Some species were more adept than others at agglutinating detritus available nearby. Large flat forms developed preferably on bottoms with abundant terrigenous material. Criteria for defining species should be found by comparing certain measurable characteristics.
Donnees nouvelles sur le faisceau salinois a l'ouest de Mouthier (Doubs)
Authors: Grandjacquet Claude 
Published: June 2020

Abstract
Three principal structural elements are recognized in the Salins tectonic unit in the area west of the Loue valley, between Bolandoz and the Mouthier depression in Doubs, France--the Ornans (a slightly dislocated foreland zone), an intermediate buffer zone, and the overthrust Levier section. Deep fracturing, dislocation accompanied by folding, overthrusting, and shearing, and post- tectonic readjustment were responsible for development of the structure.
Sur l'extension des "durbachites" et autres roches basifiees au sein des gneiss de Sainte-Marie-aux-Mines dans les Vosges (Haut-Rhin)
Authors: Eller Jean Paul von 
Published: June 2020

Abstract
So-called durbachites and related rocks within the Sainte-Marie-aux-Mines gneiss of the Vosges massif (Haut-Rhin, France) have been mapped. Their origin seems to be related to the nature of the original rock, their position relative to a nearby biotite-amphibole granite, and the proximity of a coarse two-mica granite at shallow depth. They are considered to have formed by desilication of leptynitic rocks and later feldspathization. Microsyenites which extend farther northward in the Urbeis gneiss at the margin of the amphibole granite represent magmatic counterparts of the durbachites.
Revision de la collection T. H. Ting d'Archaeocyatha conservee au Musee de Marburg (Allemagne)
Authors: Debrenne Francoise , Debrenne M. 
Published: June 2020

Abstract
The collection of archeocyathids from Australian localities, originally described by T. H. Ting in 1937, now in the Marburg museum (Germany), has been photographed in its entirety and many sections and polished surfaces have been made. The original descriptions have been supplemented by emendation of brief descriptions and creation of four new species.