bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rythmes de sedimentation dans les zones de Nalzen, du Pech de Foix, et du Dreuilhe (Ariege) pendant les temps cretaces
Authors: Gubler Yvonne , Vatan A. 
Published: June 2020

Abstract
On the basis of a study of the mineral and microfaunal composition of Cretaceous sediments of the Nalzen basin, the Pech de Foix fold, and the Dreuilhe brachyanticline, a series of contiguous structures in the north Pyrenean marginal platform region in Ariege, France, the cyclic formation of terrigenous and reef deposits is discussed.
Observations sur l'eurite de la Serre (Jura)
Authors: Bonte Antoine 
Published: June 2020

Abstract
Concludes that the eurite intercalated between Hercynian gneisses and the mica schists and Permian sandstones along the northwest border of the Serre massif, Jura region, France, is a sedimentary rock composed of material derived from contemporary Permian rhyolites and from pre-existing metamorphic rocks.
Quelques donnees et problemes de lithologie sedimentaire dans le Bassin parisien
Authors: Brajnikov Boris , Duplaix Solange 
Published: June 2020

Abstract
Describes the heavy mineral components of the sedimentary formations of the Paris basin, France, discusses problems relating to the determination of the provenance of the minerals, and concludes that the Central Massif may well have supplied the material of which the sedimentary deposits are formed.
Le gisement de cuivre de Bonneterre (commune de Saint-Laurent-d'Olt, Aveyron)
Authors: Lapadu-Hargues Pierre 
Published: June 2020

Abstract
The copper ore of the Bonneterre area, Aveyron, France, is composed of carbonates at the surface, and probably of sulfides at depth, and occurs in a fault zone in Liassic sandstones. It was probably formed during renewed activity along a pre-existing fault which diagonally traverses the Permian and Jurassic sedimentary formations of the area.
La tectonique de fond dans la zone externe des Alpes
Authors: Goguel Jean 
Published: June 2020

Abstract
Discusses the deep-seated tectonics of the Paleozoic basement of the outer Alps, extending from the Maritime Alps to the Juras, France. In the outer Alpine zone the basement was essentially a stable mass which did not actively participate in the folding of the Mesozoic sedimentary cover, although deformation to which it was subjected is reflected in the structure of the cover.
Spongilles et chrysostomatacees d'un lignite de la formation cineritique du lac Chambon (Puy-de-Dome)
Authors: Firtion Fridolin 
Published: June 2020

Abstract
Describes sponge spicules and chrysostomataceans (including one new species) from a lignite seam which was formed in a Pliocene lake in the Chambon region, Puy-de-Dome, France.
Mode de gisement des basaltes "permotriasiques" au Maroc
Authors: Termier Henri , Termier Genevieve 
Published: June 2020

Abstract
Contrary to published conclusions which hold that basalts intercalated in Permo-Triassic and lower Liassic formations of Morocco all represent an enormous sill which was emplaced in post-Cretaceous time, it is concluded that the basalts in the Permo-Triassic are bedded deposits representing surface and, in some cases, submarine extrusions.
Sur l'evolution du granite de Querigut (Ariege)
Authors: Raguin Eugene 
Published: June 2020

Abstract
Discusses the genetic relationships between migmatites (amphibole granites and diorites with or without quartz) and basic rocks (melanocratic diorites, norites, hornblendites, peridotites) in the peripheral zone of the Querigut massif in the French Pyrenees. The massif is composed for the most part of normal biotite granites. The basic masses included in the migmatites are considered local segregation products formed in highly contaminated zones during a late stage of migmatization.
Applications d'etudes recentes sur les diffusions d'ions et la constitution des mineraux a l'interpretation de faits geologiques
Authors: Perrin Rene , Roubault M. 
Published: June 2020

Abstract
Discusses some of the structural and metamorphic effects of solid diffusion in crystalline rock masses, with special reference to physicochemical equilibria, the stability of the oxygen lattice and its role in determining the extent of development of new mineral assemblages, and volume changes.
Contributions aux problemes de l'apport dans le metamorphisme
Authors: Lapadu-Hargues Pierre 
Published: June 2020

Abstract
Concludes that the atomic percentages of a suite of metamorphic rocks remain constant. The addition of material involves the Si, Cu, Na, and K atoms, and the accompanying expulsion which takes place to maintain equilibrium affects the Al, Mg, and Fe atoms; no modification of the number of oxygen atoms occurs during the metamorphism.
Stratigraphie et identification des formations continentales du Moyen-Niger et du Haut-Dahomey
Authors: Pougnet Robert 
Published: June 2020

Abstract
Two distinct series are distinguished in the continental formations of central Niger and upper Dahomey, French West Africa, previously generally considered a homogeneous Mio-Pliocene series of beds. One is equivalent to the Illo group (Cretaceous), the other to the Gwandu group (post-Eocene) of northern Nigeria.
Faune des sables a Nummulites variolarius de Barisseuse, pres de Saint-Vast-les-Mello (Oise), et remarques paleontologiques
Authors: Morellet L. , Morellet J. 
Published: June 2020

Abstract
A comparative study of the fauna of the Bartonian (Eocene) Nummulites variolarius sands of the Barisseuse area, Oise, France, and other localities of similar age in the Paris basin. Paleontologic notes and brief descriptions of new species, mainly mollusks, are included.
Sur Laffitteina bibensis et Laffitteina monodi, nouveau genre et nouvelles especes de foraminiferes du Montien
Authors: Marie Pierre 
Published: June 2020

Abstract
Foraminifers previously described as operculinas from Montian (Cretaceous) deposits of Mont-Aime, Marne, France, and similar forms previously considered nummulites from Montian deposits of Mauritania, French West Africa, are assigned to the new species bibensis and monodi of the new genus Laffitteina.
Sur la signification de la craie a tubulures de Meudon [with discussion]
Authors: Ellenberger Francois 
Published: June 2020

Abstract
Concludes that the indurated chalk bed containing numerous tubular structures which underlies the pisolitic limestone in the Meudon area, Paris basin, France, is a hard ground of submarine origin which was formed during a break in sedimentation, rather than in a period of emergence, probably in the upper Cretaceous.
Observations geologiques sur la region d'Auron (Alpes-Maritimes)
Authors: Fallot Paul , Faure-Muret A. , Geze B. 
Published: June 2020

Abstract
In the northern part of the Auron region, Alpes-Maritimes, France, the terrain is composed of a continuous series of relatively undisturbed upper Triassic to Neocomian (Cretaceous) beds, which, in the southern part of the region, were subjected to overthrusting.
Nouvelles observations stratigraphiques dans l'Eocene au sud de Pau (Basses-Pyrenees)
Authors: Gubler Yvonne , Pomeyrol R. 
Published: June 2020

Abstract
Detailed analysis of the stratigraphic succession and relations of Eocene and underlying passage beds south of Pau, Basses- Pyrenees, France. The presence of a series of Paleocene strata, characterized by a rich microfauna in which Cretaceous forms are absent, and of transgressive Ypresian beds is confirmed.
Decouverte de fossiles dans la dolomie-moellon du Keuper moyen des environs de Mirecourt (Vosges)
Authors: Minoux G. , Ricour J. 
Published: June 2020

Abstract
Reports the discovery of fossils (Myophoria and Avicula) in the dolomite layer at the top of the middle Keuper (Triassic) in the vicinity of Mirecourt, Vosges, France. No fossil which could be definitely determined has previously been reported from the dolomite, which represents an index zone for the upper boundary of the middle Keuper over a wide area extending from the Moselle river to the Jura mountains.
Gravimetrie et tectonique dans les Indes neerlandaises
Authors: Lejay Pierre 
Published: June 2020

Abstract
Outlines the fundamental principles in the interpretation of gravity anomalies, and from a study of the position and relations of the belts of positive and negative gravity anomalies in Indonesia, concludes that crustal shortening in the Tertiary and convection currents were the major processes in the tectonic development of the region.
Une grande region de faible resistance dans la partie mediane du Massif Central francais [with discussion]
Authors: Lapadu-Hargues Pierre 
Published: June 2020

Abstract
Concludes that the Causses region (a subsidence trough filled with Jurassic deposits), the Margeride batholith (a Carboniferous granitic massif), and the Marvejols-Aumont-Aubrac fault are genetically related structures whose formation was due to the presence at depth of a zone of weakness in the core of the Central Massif.
Distribution des brachiopodes en especes et ses causes, illustree par les terebratulinides de l'Eocene de l'Europe occidentale
Authors: Elliott Graham F. 
Published: June 2020

Abstract
Study of terebratulinids from the Eocene of western Europe shows that an unfavorable biologic environment (abundance of mollusks) rather than the physical environment was responsible for speciation, on the basis of the concept that rare species tend to subdivide into discontinuous groups which in turn exhibit a tendency to subdivide into distinct species. The decline of brachiopods in the Tertiary was not due to modifications of their structure or to degeneration, but to their constitutional inability to compete successfully with mollusks.
Relations des granites, granulites et roches amphiboliques de la cote de Benodet (Finistere)
Authors: Perrin Rene , Roubault M. 
Published: June 2020

Abstract
Detailed observations along the Benodet coast, Finistere, France, lead to the conclusion that granulites traversing granitic masses are not magmatic rocks intruded into the granite, but that both the granulite and granite are products of granitization processes during which pre-existing amphibole rocks were transformed by solid diffusion. The granulite was probably formed prior to the granite.
Essai sur la tectonique de la region a l'est de Belo Horizonte, Minas Gerais, Bresil
Authors: Brajnikov Boris 
Published: June 2020

Abstract
The Espinhaco range east of Belo Horizonte, Minas Gerais Brazil, is not a folded massif, but a monoclinal structure whose formation was caused by large-scale tilting, accompanied by differential dislocation of the Precambrian components of the terrain and local overthrusting due to compression and by later tension fracturing. The orogenic activity is considered to have taken place subsequent to deposition of Tertiary (Miocene?) sediments in two small lacustrine basins in the region, which exhibit the same style of dislocation as the older strata of the range.
Application de methodes graphiques a l'etude de l'espece chez les Ochetoceras argoviens du Poitou
Authors: Fradin J. 
Published: June 2020

Abstract
Outlines a method for graphically representing the dimensions and variations of ornamentation and growth of ammonites belonging to the same genus, which permits identification of species and varieties, and applies it to a study of some 150 specimens belonging to the genus Ochetoceras from Argovian (Jurassic) deposits of the Poitou region, France. Seven species (including two new ones) are distinguished and described.
Presence de foraminiferes dans la meuliere de Beauce [with discussion]
Authors: Alimen Henriette 
Published: June 2020

Abstract
Reports the occurrence of foraminifers in the Beauce millstone formation capping Stampian (Oligocene) sands of the northern and central Paris basin, France. The foraminifer fauna of the formation, previously described as a lacustrine deposit on the basis of included fresh-water macrofossils, is generally indicative of deposition in a shallow warm sea. The foraminifers therefore probably represent forms which were introduced during marine invasions of the dune areas of the Stampian sea coast and which adapted to the conditions obtaining in the lake basins.
Les chevauchements de Mamirolle et de Gonsans (Doubs)
Authors: Robaux A. 
Published: June 2020

Abstract
Concludes that the overthrusts in the Jurassic terrain of the Mamirolle-Gonsans region, Doubs, France, were produced by north-south tangential pressures and that the Gonsans fault represents an extension of the Mamirolle fault.
Les Heterohelicidae du Cretace superieur pyreneen
Authors: Kikoine Jacques 
Published: June 2020

Abstract
Describes planktonic foraminifers belonging to the Heterohelicidae (including Gublerina cuvillieri n.g. n.sp.) from upper Cretaceous deposits of the French Pyrenees and discusses the evolution and classification of the family, with special reference to its stratigraphic significance.
Le dome rompu de Mariou dans le Nummulitique de Saint-Martin-le Vieil (Aude)
Authors: Astre Gaston 
Published: June 2020

Abstract
An angular unconformity in the Nummulitic formations (Eocene) of the Mariou butte in the Saint-Martin-le-Vieil region, Aude, France, is evidence of submarine crustal movements during deposition of the Nummulitic strata. The structure of the butte is that of a tectonic dome, whose truncation was probably due to faulting rather than erosion.
Sur quelques microorganismes planctoniques des silex du Jurassique moyen du Poitou et de Normandie
Authors: Valensi L. 
Published: June 2020

Abstract
Describes microorganisms belonging to the genera Hystrichosphaeridium and Micrhystridium (including new species) from cherts in middle Jurassic deposits of Poitou and Normandy, France.
L'age des principaux gisements de calcaire pisolithique [with discussion]
Authors: Chavan Andre 
Published: June 2020

Abstract
Concludes that the pisolitic limestone overlying Campanian and in places Maestrichtian (Cretaceous) formations of the Paris basin, France, was formed during at least two stages and should be qualified as a Dano-Montian formation. Transgression of the sea was both from the northeast and, in the later stage, from the west, which accounts for the mixed fauna.
Polypiers des couches albiennes a grandes trigonies de Padern (Aude)
Authors: Alloiteau J. 
Published: June 2020

Abstract
With one exception, the corals from Albian (Cretaceous) Trigonia-bearing beds of the Padern area, Aude, France, are colonial forms, which represent a shallow, warm-water reef fauna. Descriptions of one new genus and several new species are included.
Tubes silicifies presumes de Cephalodiscus, dans le Lutetien lagunaire de la region parisienne
Authors: Abrard Rene , Ph. Dollfus Robert , Soyer Robert 
Published: June 2020

Abstract
The ornamentation of silicified tubes found in Lutetian (Tertiary) lagoonal sediments of the Paris basin, France, consists of a zigzag series of transverse chevrons, a feature known only in graptolites and pterobranchs. Comparison with tubes of living and fossil Rhabdopleura indicates that the silicified tube can tentatively be assigned to Cephalodiscus lutetianus n.sp.
Remarques sur la tectonique de couverture dans les Alpes bergamasques et les Dolomites
Authors: Fallot Paul 
Published: June 2020

Abstract
Many of the local folds and overthrusts in the Bergamask, Dolomite, and Julian Alps of Italy were produced as a result of sliding of the sedimentary cover over an immobile Hercynian basement. The basement did not participate in the process of dislocation, which took place in Triassic beds overlying Permian igneous rocks.
Les limites SE du massif du Pelvoux et de l'anticlinal amygdaloide des Ecrins
Authors: Vernet Jean 
Published: June 2020

Abstract
Discusses the structural relations of the southeastern margin of the Pelvoux massif, France, with the bordering Triassic-Liassic Ailefroide-Col du Loup synclinal basin and the sedimentary cover of Nummulitic (Tertiary) formations. The massif is surrounded by a horseshoe-shaped major syncline, open to the north, which is responsible for its domelike appearance and in which the almond-shaped Ecrins anticline is developed.
Les subdivisions du Carbonifere continental
Authors: Jongmans Willem J. , Pruvost P. 
Published: June 2020

Abstract
Proposes a fourfold general subdivision of upper Carboniferous continental beds, based on the characteristics of the floras and faunas, and discusses the boundary between the Carboniferous and the Permian, concluding that the Autunian should be included in the Carboniferous.
Terrasses et phenomenes periglaciaires dans la vallee de l'Huisne en amont du Mans (Sarthe)
Authors: Poser Hans , Tricart J. 
Published: June 2020

Abstract
Describes the succession of terraces in the Huisne valley above Le Mans, Sarthe, France, and discusses the effects of solifluction and other periglacial processes, the accumulation of eolian material, and the morphologic development of the terraces. It is concluded that the terraces represent climatically controlled (rather than eustatic) land forms and that there were periods of coldclimate in western France prior to the Wuerm glaciation.
La famille des Tissotiidae dans le Turonien inferieur du Gard
Authors: Faraud M. 
Published: June 2020

Abstract
Lists a lower Turonian (Cretaceous) cephalopod fauna from Gard, France, which shows remarkable affinities with European and other faunas. Several newly collected species of Tissotiidae represented in the fauna are described, including the new species Pseudotissotia gagnierei and Leoniceras luciaeformis.
Le synclinorium de l'aiguille de Morges et le style des deformations alpines du cristallin du Pelvoux
Authors: Vernet Jean 
Published: June 2020

Abstract
A study of the structural surface of the Pelvoux crystalline complex in the Morges synclinorium, southeast of Chapelle-en-Valgaudemar, in the Briancon region, France. This surface resembles that of a cumulus cloud in shape. It is concluded that during the Alpine orogeny the crystalline complex was deformed, on a large scale, as a semirigid, semiplastic mass, with faulting only on a small scale. The sedimentary cover, on the other hand, was subjected to strong tangential displacements, resulting in the piling up of thrust slices. The mechanism of formation of closed synclines, enlarging downwards and often enclosing pockets of sedimentary rocks entirely within the crystalline rocks, is not yet clear.
Inoceramus algeriensis Heinz, une espece mal connue d'Algerie, avec quelques nouvelles observations sur le mode de vie des inocerames
Authors: Voute C. 
Published: June 2020

Abstract
A new, more complete description of Inoceramus algeriensis, based on specimens from the type locality (Cretaceous Campanian beds of Maafa, Algeria). The association with oysters, noted particularly in the group I. lamarcki, indicates a benthonic existence in rather shallow quiet waters.
Stratigraphie du "Lusitanien" de la region de Verdun
Authors: Maubeuge Pierre L. 
Published: June 2020

Abstract
A detailed study of so-called Lusitanian (Argovian and Rauracian--Jurassic) limestones in the Verdun region, Meuse, France. Twentyone exposures, mostly in quarries, are described, and a type section established. About 40 m of Argovian beds are overlain by 35-40 m of lower Rauracian beds; two middle Rauracian members together reach a maximum thickness of 25 m, but disappear toward Flabas; the upper Rauracian member reaches a maximum of 12 m, and thins toward Flabas. An erosional surface and sedimentary hiatus mark the Rauracian-Sequanian contact. No attempt is made to create new stratigraphic units; this study is purely descriptive, in accordance with accepted divisions. It is suggested in a footnote, however, that the term Lusitanian, used only in France, should be dropped in favor of Oxfordian, which has priority and more universal usage.
Sur une perthite-syenite de Baibokoum et sur une perthite-granulite de Passi (territoire du Tchad)
Authors: Jeremine Elisabeth 
Published: June 2020

Abstract
Describes the Baiebokoum perthite syenite and the Passi perthite granulite of the southern Chad region, French Equatorial Africa, which resemble certain perthitic rocks from the Fennoscandian shield. The feldspar is potassic, impregnated with perthite; plagioclase is lacking. Small amounts of augite, hornblende, biotite, and hypersthene occur in the syenite, and a few augite crystals in the granulite. As far as can be deduced from their mineralogy, the two rocks were formed under the same conditions of temperature and pressure. More detailed field work will no doubt establish whether they are independent intrusions or part of a series of magmatic differentiates like their Scandinavian counterparts. A chemical analysis of the syenite is given, and compared with a Norwegian hypersthene syenite and a Swedish perthite syenite. A review of opinions on the origin of perthite is included.
Sur le prolongement de la ride de Villagrains-Landiras vers l'est
Authors: Pressouyre F. 
Published: June 2020

Abstract
Study of the eastward prolongation of the Villagrains-Landiras fold in the Garonne basin, France, throws light on the precise dating of some of the last movements of the Pyrenean orogeny. Not a very pronounced structure, it nevertheless has determined the course of the Garonne in the region and has influenced Miocene sedimentation in this part of the Aquitaine basin.
Une combinaison de mouvements verticaux et de mouvements tangentiels dans l'evolution structurale du Liban
Authors: Angenieux J. 
Published: June 2020

Abstract
The structure of Lebanon consists of combinations of folds with faults and flexures, superposed both in space and in time. Fundamentally the region was broken by movement along great vertical faults into horsts and grabens at depth, dying out upward into S-folds and monoclinal flexures (superposition in space). Tangential peri-Alpine pressures acting on these primary structures (superposition in time) folded the horsts into anticlines, the grabens into synclines, and the deeper monoclines into second-order S-folds, but merely accentuated the superficial monoclinal flexures. The essentially north-south orientation of the primary faults was altered by Alpine tangential pressures to south-southwest-north-northeast. If the concept of the "Syrian arc" is valid, the Palmyran and Egyptian arms of the arc meet at a distinct angle in the region of Lebanon, which thus structurally, as well as culturally, constitutes a "node of interference" between Eurasia and Africa.
Devonien moyen et superieur de la Saoura et des environs d'Ougarta (Sahara occidental)
Authors: Petter Germaine 
Published: June 2020

Abstract
A detailed description of the stratigraphy and fauna of two outcrops of middle and upper Devonian deposits in the northern part of the western Sahara--one in the Saoura valley, the other in the Ougarta mountains, Algeria. The middle and upper Devonian are easily distinguished from the lower by their rich goniatite and Clymenia faunas, on the basis of which these outcrops can be correlated with the principal zones established in the Devonian of Germany.
Mimetisme ou "pseudomorphose" chez des lamellibranches fixes sur echinides
Authors: Saint-Seine Roseline de 
Published: June 2020

Abstract
Describes several cases of sessile pelecypods (Dimyodon and Pycnodonta), attached to Micraster which have developed tubercules reflecting the shape of the echinoid in which they grew. It is proposed that the mineralogic term "pseudomorphism" be extended to apply to such cases of mimesis in fossils.
Reunion extraordinaire de la Societe geologique de France dans le Jura franco-suisse du 18 au 26 juillet 1951
Authors: Glangeaud Louis , Appert G. , Aubert D. , Bonte Antoine , Bourguin P. , Caire Andre , Castany Gilbert , Dreyfuss Maurice , Giulleaume L. , Jeannet Alphonse , Lagotala H. , Lavigne J. , Michel P. , Vincienne H. 
Published: June 2020

Abstract
A compilation of reports on the geology of the Jura mountains, with particular reference to structural features and outcrops observed during the field trip of the French Geological Society in the region in 1951.