bluuebunny/crossref_metadata_2025_split huggingface dataset:
L'oeuvre d'Andre Duparque (1892-1960)
Authors: Delattre Charles , Pruvost P. 
Published: March 2020

Abstract
A biographic account of the French coal geologist A. Duparque, who, among geologists of his generation, stood out as a tenacious investigator responsible for rapid progress in the understanding of coal against seemingly unsurmountable obstacles. A bibliography of his publications is appended.
La question des conditions probables du climat de l'Autunien et du Saxonien de l'Europe centrale et occidentale
Authors: Falke Horst 
Published: March 2020

Abstract
The similarity of upper Carboniferous and Autunian (lower Permian) floras and of faunas, and most of the Autunian sediments, indicates a hot, humid climate interrupted by several dry periods during the Autunian. Saxonian (middle Permian) fauna and sediments show increasing dryness without reaching actual desert climate until the end of the epoch. Conditions differed from basin to basin during both the Autunian and the Saxonian, and relief greatly influenced the climate. Thus flora, fauna, and climate require interpretation with great care. Textures of eolian sedimentary deposits of the Permian give some information concerning prevailing wind directions and atmospheric conditions, but paleomagnetic conditions are poorly known.
Position des diabases-porphyrites dans la region de Cetraro-Intavolata et de Sangineto (Calabre, Italie meridionale)
Authors: Bousquet Jean Claude 
Published: March 2020

Abstract
In the Sangineto-Cetraro-Intavolata area of the coast range of northwestern Calabria (southern Italy) the diabase-porphyrite series of upper Triassic age has been described for many years as resting stratigraphically upon an upper phyllite series underlain by the Cetraro limestone (Triassic ?). Recent work shows that the upper phyllite series actually is the quartzite flysch of nearby areas, and that in the northern part of the area, the diabase-porphyrite series rests upon the schists below the Cetraro limestone. The Quitzow stratigraphy of the region now must be abandoned and the diabase-porphyrite series placed in a new context.
Le synclinal danien-eocene de La Mourotte (Var)
Authors: Touraine Fernand 
Published: March 2020

Abstract
Results of a stratigraphic and tectonic study of the Mourotte syncline, Provence, France, divide the structure into three parts. The northern part is composed of Hauterivian littoral beds containing Danian dinosaur eggs. The Danian limestone-sandstone series disappears at La Neuve while the marly upper Danian beds continue to the extreme northern limit of the syncline. In the central part the Hauterivian wedges out, and toward its southern limit the substratum is entirely upper Jurassic. In the southern part, the Danian limestones are only visible on the northeast border. Bird eggs collected in the area assign the southern part of the syncline to the Thanetian. Overturning is less noticeable in the north, becoming acute toward the south where the syncline is tightly overturned.
Etude tectonique de la zone des breches du massif de Sainte-Victoire dans la region du Tholonet (Bouches-du-Rhone)
Authors: Durand Jean Pierre , Tempier Claude 
Published: March 2020

Abstract
The structure of the Tholonet breccia zone is characterized by block fracturing and by a south plunging anticline. The Infernet gorge section shows normal superposition of the Rognacian over the Begudian breccia which resulted from pre-Maestrichtian orogenic movements. The Montian breccia, which lies discordantly above, marks a tectonic phase which, at the beginning of the Eocene, affected the new Sainte-Victoire anticline. With the exception of the Roques-Hautes area, where the brecciated facies extends throughout the Rognacian, the two main conglomeratic beds are of Begudian and Montian age, as in the area north of Saint Antonin. The breccias correspond to pebble deposits in a lake or a frequently inundated depression. The upper Eocene folding caused the north-northeast-south-southwest flexure at Doudon.
Desequilibres entre phases solides et fluides mineraux dans la petrogenese
Authors: Deicha Georges 
Published: March 2020

Abstract
The importance of phenomena conditioned by the disequilibrium between gases, liquids, or magmas, and solid minerals is discussed. Four modes of crystal growth are capable of causing the precipitation of a crystalline species in a supersaturated or supercooled fluid solution. In homogeneous nucleation crystallization occurs at the moment when saturation is reached and only in the presence of preformed crystals of the same species. Germinal nucleation occurs when crystallization develops in conditions of disequilibrium causing the formation of minerals of the same composition but of different structure. Crystals of this mode are twinned. Metastable nucleation involves the formation of a species different in structure from the stable crystal which developed after twinning. In heterogeneous nucleation crystallization of a species has its beginning on the surface of another crystal. This introduces impurities which inhibit nucleation and crystal growth. Secondary intervention of liquid or solid solutions in the rocks also produces phenomena equally effected by disequilibrium.
Contribution a l'etude du Cretace inferieur du massif des Arbailles (Basses-Pyrenees)
Authors: Poignant A. 
Published: March 2020

Abstract
On the basis of the microfacies and correlations of the stratigraphic units of the Arbailles massif with those further to the north (Arancou-Bergouey, Orthez-Sainte Suzanne, France), more precise information is available on the upper Jurassic and lower Cretaceous stratigraphy of the area. Due to the absence of the Perisphinctus bed (Oxfordian) the Callovian-Oxfordian boundary is indefinitely drawn; the Kimmeridgian-Portlandian boundary is likewise imprecise. The Neocomian exists but is undifferentiated. The Aptian can be divided into upper (limestones) and lower (marls) units, a regionally recognizable subdivision. The Cretaceous is transgressive, but more concordant than discordant.
La lindinosite (granite mesocrate a riebeckite) du massif d'Evisa (Corse)
Authors: Quin Jean Pierre 
Published: March 2020

Abstract
The Evisa riebeckite granite massif of western Corsica is an alkaline hololeucocratic granite through which are scattered, with gradational contact, enclaves of a mesocratic riebeckite granite (lindinosite) with rare automorphic crystals of fluorite associated with clusters of riebeckite, and also included in it. The lindinosite is a facies of the Evisa granite.
Stratigraphie et paleogeographie de l'Ordovicien de l'Anti-Atlas (Maroc): un essai de synthese
Authors: Destombes Jacques 
Published: March 2020

Abstract
The Ordovician formations on the south flank of the Anti-Atlas mountains of Morocco extend from the edge of the Guir hamada near Taouz 850 kilometers southwestward to a hamada in the Tarfaya area. The strike, although parallel to that of the axis of the mountains, contrasts with the southeastward strike of tectonic elements of the Sahara shield to the east. The lithology and paleontology of the Ordovician formations indicate an epicontinental sea with a sinking bottom receiving sandy detritus from the shield area. Distribution of facies indicates the presence of two ridges (moles) extending from the northern part of the adjacent sole.
Morphologie des galets des nappes alluviales de l'Adour et de l'Arros entre Vic-en-Bigorre et Aire-sur-l'Adour
Authors: Portier Jean 
Published: March 2020

Abstract
Statistical analysis of the morphology of pebbles in Pleistocene alluvial deposits of the Adour-Arros river region, between Vic-en-Bigorre and Aire-sur-l'Adour, France, permitted formulation of a set of parameters on the basis of which distance of transport and relationships between the different Riss and Wuerm (Pleistocene) sheets are interpreted. The Adour captured the Arros at the end of the Riss.
Note sur le gisement d'uranium dans les sables oligocenes de Saint-Pierre (Cantal)
Authors: Brassens Alain 
Published: March 2020

Abstract
The uranium mineralization of the Saint-Pierre region consists of francevillite- impregnated fluviatile Oligocene sands deposited in a basin forming part of the regional Permo-Carboniferous coal-bearing trough developed in the crystalline basement complex of the Central Massif, France. The mineralization is considered syngenetic, and was probably controlled both by climatic and topographic conditions.
Age de la serie des diabases-porphyrites (roches vertes du flysch calabro-lucanien; Italie meridionale)
Authors: Bousquet Jean Claude 
Published: March 2020

Abstract
Diabases and porphyrites in Lucania are encased in limestone underlain by flysch. Previous datings, based on the flysch, have placed the diabases and porphyrites between the Cretaceous and Eocene. New datings, based on microfauna in the limestone encasement, yield a Jurassic age. A re-examination of the formations of southern Lucania and a comparison of facies to those of the northern Apennines is in order.
Sur certains problemes de structure et d'histoire de la plate-forme de l'Europe orientale
Authors: Bogdanov A. A. 
Published: March 2020

Abstract
The eastern European platform is an irregular shield limited on the east by a line between Polyudov Kamen' and Aktyubinsk Its southern boundary extends from the Caspian sea through the Volga delta toward the source of the Sal river and the Azov sea. The western boundary follows the foot of the Scandinavian Caledonian range in the north but is poorly defined southward. Shatsky's theory of aulacogenes (ancient platforms formed in initial evolutionary stages) is discussed in some detail. Continuous, transverse, and internal aulacogenes are distinguished within the European platform. The area shows the effect of Baikalian, Caledonian, Variscan and Alpine orogenies illustrated by tectonic maps.
Remarques stratigraphiques et structurales sur la region de Palazzo-Adriano, monts Sicani (Sicile)
Authors: Mascle Georges 
Published: March 2020

Abstract
The stratigraphic series in the Palazzo Adriano area comprises formations ranging in age from Permian to Mio-Pliocene. The Permian formation is present as sedimentary klippen in the Triassic flysch deposits. The highest stratigraphic unit, which probably represents the lower part of the evaporite series, is overridden by the Pizzo Mondello structural unit in which are represented all the stratigraphic units except the evaporites. The Monte Rose unit is primarily composed of Triassic rocks and is thrust over the Pizzo Mondello unit and the evaporite series. The last tangential movements responsible for the thrusting probably occurred at the end of the Miocene.
Paragale huerzeleri nov. gen., nov. sp., mustelide nouveau de l'Aquitanien de l'Allier
Authors: Petter Germaine 
Published: March 2020

Abstract
A new genus of the family Mustelidae (carnivores), Paragale huerzeleri n. gen. n. sp., is described from two complete crania, the anterior portion of another cranium, and a mandible from Aquitanian [Miocene] deposits at Montaigu-le-Blin (Allier). The characters which distinguish the new species from Plesiogale angustifrons Pomel are discussed.
Nouvelle anomalie dans la reproduction asexuee du genre Archaeolithothamnium Rothpletz
Authors: Segonzac Genevieve 
Published: March 2020

Abstract
The filling of a sporangium cavity by cells is a new peculiarity which is added to the other aberrations already noted in the asexual reproduction of the genus Archaeolithothamnium. This phenomenon is interpreted as the result of an abnormal secondary development.
Quelques microfacies neogenes nord-aquitains
Authors: Puechmaille Chantal 
Published: March 2020

Abstract
The Aquitanian and Burdigalian deposits outcropping in Villandraut and Saucats have similar microfacies, and the depositional environments of the two series appear to have been relatively uniform as evidenced by the structure of the limestone matrix. Microfacies of the Helvetian deposits exposed at Salles were deposited under different conditions, probably influenced more by coastal currents than the Aquitanian and Burdigalian sediments.
Les Mammiferes fossiles recoltes a Sansan au cours du XIXe siecle
Authors: Ginsburg L. 
Published: March 2020

Abstract
One of the richest occurrences of fossil Mammalia in Europe was discovered in 1834 in the Helvetian (middle Miocene) deposits of Sansan in southwestern France. Nearly all groups are represented, from Chiroptera to proboscidians. The extraordinary richness of the deposit makes statistical treatment possible. Although many changes occurred in the marshy to lacustrine environment during the time of deposition, as reflected in clays, marls, limestones, and molasse, the amplitude of the changes never was large enough to destroy the balance that prevailed through the Helvetian in the area. Restudy of the fossil materials collected over a long period of time resulted in some nomenclatural changes.
Le volcanisme permo-carbonifere de la region de Nompatelize (Vosges)
Authors: Rocci Georges , Chretien Jean Claude 
Published: March 2020

Abstract
The upper Stephanian acidic volcanic rocks--trachyandesites and rhyolites, which crop out in the Nompatelize area, plunge below subhorizontal Permian sandstones. Near Voivre and Brehimont (France), explosion breccias occur with the homogeneous trachyandesite lavas suggesting that those areas were isolated centers of eruption, or perhaps represent the main eruptive center. The rhyolites are believed to be massive extrusive lavas, mixed in places with pyroclastic elements, and at the time of eruption were sufficiently porous for water and gas to produce significant effects as indicated by the phyllitic and argillaceous alteration products from the feldspars and by the low sodium percentage. The dip observed in the rhyolites probably resulted from extrusions over a short distance on the steep slopes of the Permian terrain. However the side-by-side occurrence of different facies indicates a possible composite extrusive-explosive origin for the lavas. The Nompatelize rhyolites do not represent an outlier of a large-scale ignimbrite nappe but rather seem to have come from two distinct but related centers, La Salle and Brehimont.
Sur trois granites des sondages de Marchenoir, Boissy-sur-Saint-Yon et Courgent de la partie occidentale du bassin de Paris
Authors: Morre Nicole , Planat Chantal 
Published: March 2020

Abstract
Three cores from the western part of the Paris basin (France) were taken in the equigranular granite of the basement complex. The three phases in the development of this rock are characterized by microclinization of albite and pneumatolysis, possibly occuring contemporaneously. A cataclastic granite was retrieved from the Boissy-sur-Saint-Yon core. The formation of this rock occurred in two phases corresponding to the original paragenesis of quartz, orthoclase, and albite, and subsequent low-temperature paragenesis of quartz and albite. The Courgent core yielded a fine-grained granite containing mica, albite with polysynthetic twinning, perthitic microcline, quartz and accessory minerals. Evidence of secondary silicification is present in the zones of orthogneissic planar texture, where neomineralization has been especially strong. The origins of the three granites, all of which are alkalic, are determined using the method proposed by M. Gorai (1951), and the results are plotted on a triangular diagram. Results of chemical analyses of the rocks are presented in tabular form.
Etude stratigraphique et micropaleontologique d'une serie jurassique de l'le de Minorque, Baleares (Espagne)
Authors: Bourrouilh Robert , Moullade Michel 
Published: March 2020

Abstract
The Jurassic of Minorca is known from a composite section described from outcrops on the Cape of Fornells and on the Atalaya de Fornells peninsula. The Liassic is primarily a microcrystalline dolomite; the middle Jurassic, containing Orbitammina (Dictyoconus) cayeuxi (Lucas), is composed of dolomites containing large dolomite crystals, and always displaying oolitic texture; the upper Jurassic consists of limestone and microcrystalline dolomites. Comparison of the Orbitolinidae genera, Meyendorffina and Coskinolina, does not reveal significant differences between the two, therefore justifying the reduction of Meyendorffina to the rank of subgenus in the genus Coskinolina. Coskinolina (Meyendorffina) bizonorum, n. sp., C. (M.) minoricensis n. sp., and C. (M.) sp. 1 are described and figured. The beds containing Meyendorffina, which lie between the middle and upper Liassic brachiopod marls and the upper Jurassic limestones with Valvulinella sp., are assigned to the Dogger, possibly the upper part, on the basis of 'Dictyoconus' cayeuxi (also figured).
Mesures d'ages absolus sur les series precambriennes et paleozoiques du Senegal oriental
Authors: Bassot Jean Pierre , Bonhomme M. , Roques Maurice , Vachette Michelle 
Published: March 2020

Abstract
Absolute ages using the strontium method were obtained for Precambrian and Paleozoic rocks of the Senegal basin (Africa). These dates compare favorably with the previous work done recently in the area. The Birrimian series is the oldest unit, with an age of 2045 m.y. The Segou-Madinakouta series unconformably overlying the Birrimian is dated, at its base, as 1020 m.y. The date of 645 m.y. obtained for the Niokolo-Koba granite may represent later rejuvenation of an older granite and not the granitization itself. No age was obtained for the Faleme series. The Youkounkoun series is dated as 560 m.y. Metamorphism of the Koulountou series probably occurred at the beginning of the Gothlandian (430 m.y.). The Bakel series was metamorphosed at the end of the Devonian (355 m.y.), and again in the Triassic (206 m.y.).
Etude geologique de la region de Trescore-Balneario (Alpes meridionales, province de Bergame, Italie)
Authors: Piat Bernard 
Published: March 2020

Abstract
The stratigraphic sequence of the Trescore-Balneario region in the southern Alps is entirely marine consisting of thick concordant deposits from the Triassic to the upper Cretaceous. They are discordantly overlain by Pliocene beds. Liassic rocks in the sequence represent a shallow water facies whereas the Dogger, Malm, and Neocomian reflect deposition in deep water. The remainder of the Cretaceous is a flysch sequence derived from a source to the west. The Pliocene represents a transgressive marine sequence of red sandstones and argillites containing fragments of pelecypods and gastropods.
Connaissances nouvelles sur la geologie du socle de la Limagne d'apres les sondages de la Regie autonome des petroles
Authors: Grolier Jacques , Tchimichkian Georges 
Published: March 2020

Abstract
Analysis of cores from ten holes between Moulins and Cournon (central France) indicates that the basement rock is found at widely variable depths and that it is not markedly different petrographically from the basement series of the adjacent crystalline plateaus. The rock is a recrystallized and silicified quartzo-feldspathic mass with feldspar phenocrysts. Correlation of the data obtained from the cores with the surface geology shows that the Treban granite does not extend above the Allier river; the granitic basement possesses light-colored variations and cuts across volcanic dikes. The mineral composition of selected samples from the cores is presented in a table.
Les regressions marines et le probleme du renouvellement des faunes au cours des temps geologiques
Authors: Ginsburg L. 
Published: March 2020

Abstract
One basis for geochronology is the succession of faunal groups. Evolutionary transformations, the extinction of species, and the appearance of new forms is neither a chance occurrence nor one marked by a regular rhythm. The disequilibrium provoked by alternating transgressions and regressions has a profound effect on animal populations. At the end of each marine regression a hecatomb of fauna is left in the neritic zones. A return of the sea in the succeeding transgression provides opportunity for the multiplication and diversification of the surviving forms. Through this process of natural selection evolutionary development is stimulated by alternating marine cycles.
Bryozoaires du 'Sparnacien' des Corbieres et du Plantaurel
Authors: Plaziat Jean Claude , Balavoine Pierre 
Published: March 2020

Abstract
Outcrops of a series attributed to the Sparnacian (lower Eocene) can be followed with rare breaks in continuity from the eastern part of the Corbieres region, SW of Narbonne (southern France), westward into Haute-Garonne. Facies in the Orbieu river valley on the northeast are dominantly littoral, but at Carla de Roquefort in the Plantaurel area, they are dominantly marine. Bryozoa from these strata are poorly known. Species found in the Plantaurel area include many found in the Orbieu valley. Five new species were found, two common to both areas, two in the Orbieu valley only, and one in the Plantaurel area only. Fourteen known species were found. A shallow sea, with easy communication between the two areas is indicated. The lateral distribution suggests major stratigraphic importance for this fauna.
'Traces en rosette' du flysch eocene de Jaca (Aragon). Essai d'interpretation
Authors: Lucas Gabriel , Rech-Frollo Marguerite 
Published: March 2020

Abstract
At the base of a bed of flysch sandstone of Eocene age in the Jaca area of the Aragon river valley (Spain), occur rosette type markings about fifty centimeters in diameter consisting of shallow grooves radiating from a central cone-shaped impression. They are believed to be marks left by large pelecypods.
Esquisse stratigraphique du Jurassique superieur et du Cretace inferieur du chainon du Mail-Arrouy (Basses-Pyrenees)
Authors: Poignant A. 
Published: March 2020

Abstract
A relatively complete section of upper Jurassic and lower Cretaceous strata occurs on the north flank of the Mail-Arrouy mountain in the Basses-Pyrenees. Apparently only basal lower Cretaceous is lacking or perhaps incompletely represented. Study of the microfacies in these formations facilitates correlation with other outcrops in southern and western Aquitaine.
Ultramicroscopie petrographique; le rutile du quartz des granites
Authors: Deicha Georges 
Published: March 2020

Abstract
Rutile needles of macroscopic, microscopic, and submicroscopic sizes occur in the quartz of acidic igneous rocks. Although it is not known whether they are present as the result of mechanical inclusion, crystallization simultaneous with that of the quartz, oriented exsolution, or replacement they are an important means of tectonic and geochemical study. A grain of granitic quartz torn by erosion from its crystalline petrographic context retains its submicroscopic inclusions throughout the course of its sedimentary peregrinations no matter how small the detrital fragments may become.
Les relations petrogenetiques entre les eclogites et les amphibolites dans le massif cristallophyllien du mont Snieznik
Authors: Smulikowski Kazimierz 
Published: March 2020

Abstract
Two different lithologic series of metamorphic rocks, granulite-eclogite and amphibolite-eclogite, in adjoining areas of the Snieznik massif of the Sudetes mountains on the Czech-Polish frontier, underwent different equilibrium conditions yet both had the paragenetic conditions for development of eclogite. Differences in the chemical composition of the original rocks and in the properties of intergranular solutions during metamorphism, rather than differences in temperature and pressure resulting from differences in depth of burial, determined the rock types resulting from metamorphism.
Pistes d'oiseaux et remaniements synsedimentaires dans le Lutetien du detroit de Carcassonne (Aude)
Authors: Plaziat Jean Claude 
Published: March 2020

Abstract
The Lutetian (middle Eocene) formations deposited in the Carcassonne straits in southern France comprise a thick sequence of marine limestones and sandy marls overlain by a similar thickness of continental molasse in which numerous bird tracks occur.