bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geologie de la region de Bar-le-Duc (Meuse)
Authors: Stchepinsky Vladimir 
Published: March 2020

Abstract
Upper Jurassic (Kimeridgian and Portlandian) and lower Cretaceous formations crop out in the area south of Bar-le-Duc, France. In contrast to the fractured area to the west, this area is a solid block. The relatively unimportant Veel-Combles fault is related to the Marne double fault, despite its isolation. An east-west fault, 20 kilometers long with a southward throw of 10 meters, can also be traced. The paleogeographic evolution of the area during the Mesozoic is outlined.
Une nouvelle serie polymetamorphique du Massif Central francais; le Livradois meridional
Authors: Forestier Francois-Hubert 
Published: March 2020

Abstract
A retrograde metamorphic series in the southern Livradois zone is described and compared with other retrograde metamorphic zones in the crystalline rocks of the Central Massif of France. The second metamorphism is not merely a late stage of the first; its microcataclastic character indicates that it affected completely consolidated rocks of the deep migmatite to the lower mica schist stage. Two distinct pre-Stephanian orogenies are apparently represented, but they cannot be dated more precisely at present.
Note preliminaire sur le Cretace a rudistes de l'Anti-Alborz (Elbourz) occidental (E et SE de Teheran, Iran)
Authors: Nazemi Fakhriran , Grubic A.  
Published: March 2020

Abstract
Rudistid-bearing Cretaceous beds have been studied in the western Anti-Elburz region east and southeast of Teheran, Iran. Hippurites vredenburgi and Osculigera magna are described in detail. Biradiolites carezi and B. cf. siracensis were also identified. It is now possible to correlate the rudistid facies throughout all of Iran.
Remarques sur le Pliocene de Lessay (Manche)
Authors: Pelhate Annik 
Published: March 2020

Abstract
Two types of deposits, both Pliocene, are recognized on the basis of sedimentologic analyses of samples collected near Lessay (Manche, France). One represents a transgressive facies (characterized by the presence of glauconite and abundant metamorphic minerals), the other a regressive facies (characterized by the presence of amphiboles).
La faune silurienne de Phulchauki pres de Kathmandu (Himalaya du Nepal)
Authors: Bordet Pierre , Cavet P. , Pillet J. 
Published: March 2020

Abstract
Describes an upper Silurian fauna from the Phulchauki massif near Katmandu in the Himalaya range, Nepal. Systematic descriptions of brachiopods from graywacke schists and trilobites from a hematite bed are included.
Les affleurements senoniens de la tranchee du gaz de Lacq en Charente
Authors: Seronie-Vivien Micheline 
Published: March 2020

Abstract
Several horizons, well defined on the basis of their micrographic and micropaleontologic characteristics, are recognized in the Senonian (Cretaceous) sediments traversed by excavations for the gas line northward from the Lacq field in Charente toward the center of France. Precise stratigraphic definition of the zones was possible with the aid of associated ammonites and species of Inoceramus.
Donnees nouvelles sur le Jurassique et le Cretace inferieur dans l'est des Cordilleres betiques (regions d'Alcoy et d'Alicante)
Authors: Busnardo Robert , Durand Delga M. 
Published: March 2020

Abstract
Although only about 40 kilometers apart, the Jurassic-lower Cretaceous deposits of the Querola section in the northern Alcoy area differ considerably from those of the Sierra de Foncalent section in Alicante, Spain. The details of the sections are reported. The Alcoy section may belong to the Prebetic zone; the Alicante section may belong to the Subbetic or to a paleogeographic unit intermediate between the two structural zones.
Une coupe du Tertiaire prebetique de Benitachell (prov. d'Alicante, Espagne)
Authors: Durand Delga Michel , Magne J.  
Published: March 2020

Abstract
The Tertiary section above the neritic Cretaceous limestones forming the base of the Benitachell range, Spain, comprises massive middle upper Eocene limestones, with a thin basal conglomerate, and a thick series of apparently conformable upper Oligocene limestones and marls. The predominance of limestones and the presence of stratigraphic gaps distinguishes the section from the Nummulitic section of the Alfaz region, some 307 kilometers to the southwest, which is essentially marly from Senonian (Cretaceous) to Oligocene. A major tectonic break may intervene between the two areas.
Les "konglomeratische Mergel" des Cordilleres betiques
Authors: Duplaix Solange , Fallot P. 
Published: March 2020

Abstract
The so-called "konglomeratische Mergel" (conglomeratic marl) formation of the Betic cordilleras, Spain, is neither a marl nor a conglomerate. A residual origin is suggested, involving solution of the soluble part of older rocks. Study of heavy minerals shows that the source rocks cannot have been the mica schists of the Sierra Nevada or the Mischungszone (zone of tectonic mixing); they were derived from crystalline rock masses which were emergent in the lower Triassic.
Etude de quelques affleurements jurassiques de la region d'Alcala de los Gazules (prov. de Cadix, Espagne)
Authors: Chauve Pierre 
Published: March 2020

Abstract
Jurassic outcrops in the Subbetic zone of the Alcala de los Gazules region, northern Cadiz, Spain, are nearly always in unconformable contact with Triassic formations and are often extensively dislocated. A complete sequence from Liassic to Cretaceous has been established, nevertheless.
Sur un magmatisme jeune dans les Dinarides externes de Yougoslavie
Authors: Ciric Branislav 
Published: March 2020

Abstract
Reports and describes occurrences of rhyolite in the top of the upper Cretaceous Flysch deposits of the Durmitor region in Montenegro, Yugoslavia. The field evidence suggests that the rhyolites and their tuffs are contemporaneous with the Flysch, and are Maestrichtian-Danian in age.
Le Carbonifere post-tassilien du bassin de Reggan (Sahara occidental)
Authors: Bonnet Andre , Fabre J. , Feys R. 
Published: March 2020

Abstract
Drilling for oil in the Reggan region (Algeria) of the western Sahara shows the presence of a Carboniferous basin, in which two continental series--Namurian and Stephanian--can be distinguished. The Westphalian is essentially absent. Some fossils (fish scales, Leaia, and Cordaites) that are new for the region are described.
Les spores de l'assise de Bruay dans l'ouest du bassin houiller du Nord et du Pas-de-Calais
Authors: Carette Josiane , Cayeux Jacqueline , Danze Jacques , Laveine Jean-Pierre , Le Merrer Annie 
Published: March 2020

Abstract
Study of the distribution of mega- and microspores in coal seams of the Bruay zone in the western part of the Nord-Pas-de-Calais basin, France, permits vein-to-vein correlation over distances of more than 10 kilometers, confirming the value of palynology in coal stratigraphy.
Stratigraphie du bassin houiller de Lons-le-Saunier (Jura); note preliminaire
Authors: Greber Charles , Lienhardt G. 
Published: March 2020

Abstract
Paleobotanic evidence confirms the presence of a lower and a middle Stephanian zone in the Carboniferous coal measures of the Lons-le-Saunier coal basin (Jura, France).
Un arthropode du terrain houiller de la Loire, Eileticus pruvosti nov. sp.; position systematique du genre Eileticus Scudder
Authors: Vandenberghe Andre 
Published: March 2020

Abstract
Describes Eileticus pruvosti n.sp., a new arthropod from the Carboniferous coal measures of the Loire region, France. It was found in the Saint-Etienne basin, in boundary beds between the middle and upper Stephanian. Its morphologic features confirm the fact that the genus belongs to the order Syncarida.
Les formations ferrugineuses de l'Hauterivien de Bargeme (Var)
Authors: Cotillon Pierre 
Published: March 2020

Abstract
Detailed study of ferruginous Hauterivian (Cretaceous) deposits of the Bargeme region, France, shows that there is a close relation between glauconite, glauconite altered by iron hydroxide, and ferruginous oolites. Iron of continental origin is a genetic factor common to all three. Reacting in an alternately reducing and oxidizing environment, the iron was responsible for formation of glauconite by combination with clay minerals, and of iron hydroxide. The glauconite is thus a true ore mineral comparable to the chlorites of the Lorraine basin.
Sur les mineralisations en plomb-zinc et en antimoine de la peripherie du Mont-Lozere
Authors: Bouladon Jean 
Published: March 2020

Abstract
Lead-zinc deposits occur along the borders of Mont-Lozere, a Hercynian granitic horst in the Central Massif region, France. Mineralization accompanied uplift of the horst in Tertiary time and took place in several phases. One of the late near-surface phases was characterized by the development of antimony-rich sphalerite.
Geologie des unites situees entre l'autochtone de l'Argentera et les couches triasiques du Monte Vecchio (province de Cuneo, Italie)
Authors: Guillaume Andre 
Published: March 2020

Abstract
The autochthonous formations of the Argentera massif form the base of the Col de Tende unit in Cuneo province, Italy. The Cretaceous beds of the unit are well developed to the northwest, but are absent to the southeast as a result of pre-Lutetian erosion. Toward the northwest the Col de Tende unit becomes more plastic and underlies overthrust units. Some of the latter show facies of Triora-type units, while others exhibit a facies hitherto unknown among the Subbrianconnais units. The contact with the Triassic of the Monte Vecchio unit is marked by a crush zone in beds exhibiting facies of the basal complex of the Helminthoid Flysch nappe.
Subsidence et enallaxie; deux phenomenes qui president aux depots steriles et phytogenes du Stephanien de Lons-le-Saunier (Jura)
Authors: Lienhardt Georges 
Published: March 2020

Abstract
The Stephanian (Carboniferous) barren measures of the Lons-le-Saunier basin, France, consist of two large groups of rocks. Those of the first group are feldspathic and are the product of the breakdown of denuded parent rock; those of the second group, without feldspar, are derived from soil which had developed on similar parent rocks. Enallaxy is the alternation of these two types. Accumulation of the barren measures can be explained in terms of slow and continuous subsidence. Formation of coal seams, however, requires the conditions resulting from more or less sudden subsidence.
Le bassin oligocene de Bagnasco (Italie, prov. de Cuneo)
Authors: Lorenz Claude 
Published: March 2020

Abstract
The Bagnasco basin in Cuneo province, Italy, is filled largely by coarse detrital sediments overlain, in the vicinity of Bagnasco only, by a marly formation preserved in a small graben. These sediments are continental in character and poor in fossils; they can be attributed mainly to the Stampian and Chattian (Oligocene).
Evolutions paralleles de series de rhyolite et d'arkose soumises a l'action d'un metamorphisme topochimique
Authors: Bouvet Michel , Reboul C. 
Published: March 2020

Abstract
Thick rhyolitic and arkosic formations outcrop in the Pharusian basin east of the Adrar Timg'aouine horst in the central Ahaggar mountains, Algeria. The rhyolites have been considerably recrystallized, and locally are almost granitic in facies. Small sheets of essentially syntectonic granites, microscopically and chemically resembling the recrystallized rhyolites, are also present in the basin. The arkoses have also been substantially recrystallized and in the cores of anticlines resemble granites; the end products of recrystallization of the rhyolites and arkoses can hardly be distinguished by the eye, and with difficulty under the microscope; chemical analysis is necessary to settle the question of their origin.
Les charnockites et les roches associees du Suggarien a facies In Ouzzal (Sahara algerien)
Authors: Giraud Pierre 
Published: March 2020

Abstract
Rocks of the In Ouzzal facies in Suggarian (Precambrian) complexes of the Sahara of Algeria comprise a charnockitic complex consisting essentially of pyroxenites, gneisses, plagioclasites, "granites," and "syenites" (lamboanites), with interstratified masses of crystalline limestone with silicate nodules, garnet and graphite gneisses, and "leptynites" with blue quartz. The structural arrangement of the In Ouzzal formations is totally different from that of ordinary Suggarian formations. Their eastern boundary is a large fault, whereas their western boundary is not a clear-cut fracture. Southward there appears to be a gradation into ordinary Suggarian rocks.
Un troisieme exemplaire d'Imhoffius lutetianus Chabanaud
Authors: Patte Etienne 
Published: March 2020

Abstract
The two known specimens of Imhoffius lutetianus were from unrecorded sources, but Abrard was able to identify the associated sedimentary material as from the Royal bed of zone IV of the Lutetian in the region of Nanterre, Courbevoie, or Puteaux. The third specimen is from an old collection, with source unrecorded but unquestionably from the same zone IV of the Lutetian a little above the Royal bed horizon. Some details are shown in the third specimen that were not determinable in the others, thus verifying species.
Contribution a l'etude geomorphologique du nord-est du Bresil
Authors: Meunier Andre R. 
Published: March 2020

Abstract
A region of 40,000 km &lt;sup&gt;2&lt;/sup&gt; in the States of Pernambuco, Paraiba, and Rio Grande do Norte in northeastern Brasil, drained to the north by the Piranhas river and to the east by the Paraiba river, exhibits a series of Cenozoic erosion levels showing the morphologic characteristics of littoral and interior zones. Rocks of the region are a poorly-known Precambrian complex attributed to the Algonkian. In the semi-arid western half of the region, west of the meridian of Campina Grande, are the Chapadas, Soledad, and Patos levels, respectively at 830-650, 600-550, and 300-250 m elevation. In the eastern half of the littoral region are the Borborema and Umbuzeiro surfaces, the probably Pliocene Tabuleiros gently sloping from 200 to 20 m at the seacoast, and the Itabaiana surface at about 90 m. These features reflect successive border flexures of the Brazilian shield, and progressive accentuation of an enormous fold at depth.
Remarques sur l'evolution tectonique de la Sicile
Authors: Caire Andre 
Published: March 2020

Abstract
Recent work has shown that North African structural and paleogeographic features appear to extend into Sicily and southern Calabria. However, it has not yet been determined whether identical tectonic evolution occurred, or if it is merely analogy. Of many hypotheses, two seem most in accord with observed facts: the ultra-nappism and overthrusts of reduced size. Ultra-nappism is analyzed in detail. The second hypothesis would be favored if the Numidian and Cretaceous flysch are parautochthonous or little displaced by thrust faulting. In this case, structural events would be chiefly in the Tertiary instead of in both Tertiary and Mesozoic.
Contribution a l'etude geologique de la chaine calcaire des monts Peloritains (zone de Militello-Tortorici), Sicile nord-orientale
Authors: Duee G. 
Published: March 2020

Abstract
The limestone chain of the Peloritani mountains in northeastern Sicily is made up of several tectonic units differing stratigraphically, and complexly thrust-faulted into various anomalous positions. The Longi (or lower) unit and its eastern extension, the dolomitic unit, comprise 250-300 m of red quartz conglomerate of pre-Liassic age; 500 m of Jurassic limestone and dolomite concordant on the conglomerate; and about 300 m of upper Jurassic-Cretaceous-Eocene marl and limestone. In the Longi unit, a thick molasse of early Tertiary age also occurs. The Galati unit consists of phyllite overlain unconformably by various facies of Mesozoic limestone, dolomitic limestone, marl, and conglomerate. The red limestone unit comprises upper Cretaceous marl overlain by lower Jurassic limestones, Eocene beds transgressive over both, and Oligocene-Miocene molasse at the top. The tectonic relationships of these units are highly complicated. Much thrusting probably occurred prior to deposition of the molasse. Jurassic-lower Cretaceous flysch on the south has been overridden by the chain, but the age of this thrusting is problematic. The molasse seems to have been deposited transgressively over all other formations and tectonic units, but some important tectonic deformation certainly is post-molasse and part is Quaternary.
Apercu morphotectonique et paleogeographique du domaine calabro-lucanien (Italie meridionale)
Authors: Grandjacquet Claude 
Published: March 2020

Abstract
In the region lying between Salerno and the Ofanto river on the north and Cetraro and the gulf of Tarento on the south and southeast, the south end of the Apennines merges into the structural pattern of the western Mediterranean region (southwestern Italy-Sicily-North Africa). After a cycle of sedimentation, tectonic deformation, and erosion extending from Triassic to upper Oligocene, a second cycle began in the late Oligocene and earliest Miocene. Mosaic faulting, in general based upon major structural features of the earlier cycle, occurred throughout the entire southern Italy-North African region. The age of the quartzite flysch remains unknown but is probably Jurassic-Cretaceous.
Additions a la faune reptilienne de l'Eocene superieur de Mormont-Saint-Loup (Suisse)
Authors: Hoffstetter Robert 
Published: March 2020

Abstract
A review of the upper Eocene vertebrate fauna from the Mormont (Mauremont) and Saint Loup localities, Vaud, Switzerland, has resulted in the description of a new reptilian form, Paraxestops stehleni n. gen. n. sp. The close similarity of the new genus to the North American genus Xestops suggests close affinities between European and North American lacertiform faunas. Reexamination of indeterminate vertebrate remains from the Entreroches locality reveals the presence of the upper Ludian amphibian Megalotriton. Mammals and other reptiles previously collected from the area are listed and briefly described.
Contribution a l'etude stratigraphique du Purbeckien-Wealdien de la region de Santander (Espagne)
Authors: Rat Pierre 
Published: March 2020

Abstract
The series between the marine Callovian and marine Aptian is divisible into a lower and an upper group. The lower group is predominantly limestones, marls or clays, and rare sandstone. Fossils collected from the unit suggest lacustrine or brackish water deposition of the Purbeckian. Sediments of the upper group--sandy shales unconformable on the lower group--originated from the neighboring continental surfaces. Since only fossil imprints were found, the group is dated as Wealden on the basis of the underlying and overlying units. Calcareous sponges and limestone facies with bryozoans and sponges are illustrated and briefly described from the localities studied. Iberina lusitanica (foraminifera) and Dictyocythere aff. mediostricta (ostracode) are described and figured.
Quelques aspects des conditions de depot du flysch
Authors: Rech-Frollo Marguerite 
Published: March 2020

Abstract
Analysis of the Niesen flysch between Le Sepey and Mosses lake does not confirm the deep-water bathymetry commonly attributed to flysch deposits. The juxtaposition of organic material over continental alluvium--a typical flysch characteristic--was observed only at shallow depths. The muddy sands, source of the flysch deposits, are actually formed at shallow depths. Bird tracks reported from certain flysch beds also suggest shallow-water origin for the deposits. Cross currents produced after periodic disruption of tectonic and climatic equilibria in parts of a marine basin corresponding to the continental platforms explain the mechanical sorting of the organisms and detrital material as well as the granoclastic structure of the flysch. After deposition of the flysch and before its compaction orogenic mobility at the bottom of the basin affected the petrography of the flysch causing corrosion of the quartz and feldspars at the moment of consolidation. Evidence presented by proponents of a deep-water origin for the flysch deposits--based on foraminifera and the petrographic and paleo-oceanographic characters of the deep-water sands--is reviewed.
La sizunite (cap Sizun, Finistere) et le probleme de l'origine des lamprophyres
Authors: Cogne J. 
Published: March 2020

Abstract
Sizunite, a micaceous lamprophyre including small granitic xenoliths, is found in a NW-SE trending vein in granites of the Hercynian orogeny (western France). The xenoliths are of two types--numerous small globular forms containing biotite, and less abundant angular forms containing two micas. The sizunite is distinguished by its extreme richness in potassic elements and by the fact that microcline is the only feldspar present. Chemical analysis shows that this rock is the most potassic and phosphoric of the 382 lamprophyres known. Results of modal analyses and micrographic studies classify it in the alkalic syenite group. It is probably the product of selective assimilation of certain granitic elements by a deep-seated basic magma, related to a late orogenic phase. The magma contaminated itself while cutting across freshly folded and granitized, mesothermal sial.
Sur la serie metamorphique de Velez-Malaga (province de Malaga, Espagne)
Authors: Boulin Jean 
Published: March 2020

Abstract
Four major petrographic facies are distinguished along the Malaga-Motril road between Torre de Mar and Nerja (Spain)--sericite schist, mica schist, gneiss, and lenticular gneiss facies. The mechanical forces which caused the fold and boudinage structures affecting the feldspathic mica schists and the mica schists with andalusite occurred contemporaneously with, if not before, the albitization of the Velez series. The sericite schists have been correlated with certain Triassic series, leading to the proposal of a post-Triassic age for the metamorphism of the Velez series. Two phases of crystallization are recognized in the petrogenesis of the Velez-Malaga crystalline schists: transformation of an older sedimentary series by intense metamorphism, and albitization of the resultant metamorphic series related to major sodic metasomatism.
Une impregnation plombo-zincifere dans les tufs rhyolitiques de la Finosa, pres Ghisoni (Corse)
Authors: Aicard Pierre , Azas Henri , Bouladon Jean , Sainfeld Paul 
Published: March 2020

Abstract
The Finosa locality, 4 km east of Ghisoni (central Corsica), is situated in the northern part of a series of pyroclastic and detrital formations of probable Permian or upper Carboniferous age. The section studied includes ignimbrites with long sinuous xenoliths of recrystallized rhyolitic glass, alternating green and red tuffs, agglomerates, arkoses, breccia, and limestone. The mineralization is stratiform, emplaced by substitution in the rhyolitic tuff at the expense of the vitreous matrix. Mineralization in the green tuffs was arrested by the lateral passage to the red facies. The main locality is situated where the tuffs are crushed by a protuberance from the roof of the underlying granite basement complex. The Finosa mineralization exhibits marked vertical zonation. The minerals encountered are listed according to their relative abundance showing a predominance of sphalerite and galena. These mineralized deposits are classified as mesothermal beds impregnated and substituted in the collapse zones of the siliceous rocks. The mineralization is related to the terminal phases of the Hercynian orogeny.