bluuebunny/crossref_metadata_2025_split huggingface dataset:
Remarques sur les depots de travertins par les cours d'eau et sur leurs consequences morphologiques [with discussion]
Authors: Lambert Alexis 
Published: June 2020

Abstract
Discusses the conditions governing localization of travertine dams along streams in the karst region of Yugoslavia. Deposition occurs when the flow passes from the so-called tranquil to the turbulent regime, and can be attributed to a cavitation effect. These dams seriously interfere with normal erosion. In Algeria and Morocco such deposits have had an effect on the sculpturing of land forms; vast areas should be studied in detail in the light of this phenomenon.
Le chainon jurassique de Berchich (Ighil Ali); retouches au schema paleogeographique et structural de l'Algerie tellienne
Authors: Lucas Gabriel 
Published: June 2020

Abstract
The Jurassic series exposed in the Berchich range near Ighil Ali, Algeria, is distinguished by the presence of Aalenian-Bajocian red sandstones and pelites. The only other such rocks known in Algeria are in the Ouarsenis and Numidian ranges. The Ouarsenis- Ighil Ali-Numidian range zone is considered to be a single structural unit, a fact which casts doubt on the validity of the so-called zone I (Kabylia zone) structural unit.
Observations sur les ilots rocheux situes au nord de Granville (Manche)
Authors: Graindor Maurice J. , Roblot M. M. 
Published: June 2020

Abstract
The rocky islets north of Granville along the west coast of the Contentin peninsula, France, are not Brioverian in age. Two stratigraphic complexes are present; the first, at Ronquet and the Moulieres d'Agon, represents the westward extension of the Montmartin Carboniferous geosyncline, and the second, from Senequet to the mouth of the Ay, is of the same age as the Lessay sandstone, probably Carboniferous. Diorite was found at the Chaussee des Boeufs.
Sur la constitution geologique de la region du Vohibory (Madagascar)
Authors: Boulanger Jacques 
Published: June 2020

Abstract
In the Vohibory region, southern Madagascar, the peneplaned crystalline basement outcrops on the east, the sedimentary cover on the west. The basement is composed of Precambrian paragneissic rocks, in which a basal amphibolitic complex (the Androyen series in the east and the Vohiboryen series in the west) can be distinguished, and the unconformably overlying Ampanihyen series. Petrographic study shows distinct petrochemical differences between the series, confirming the stratigraphic and structural evidence of the unconformity.
La geologie de l'extreme sud-est de Madagascar
Authors: Roche Hubert de la 
Published: June 2020

Abstract
Recent work in the extreme southeastern part of Madagascar suggests that the Androyen system be subdivided on the basis of stratigraphic rather than metamorphic zones. The Anosyen granites and their train of charnockites were developed at variable levels within the upper pyroxenite series which is distinctly layered. These upper series contain thorium deposits (thorianite in the phroxenites, monazite in the granites); the Anosyen granitization and thorium concentration are related to the Eocambrian orogeny 485 million years ago.
Les problemes geologiques et miniers dans l'exploitation du mica phlogopite a Madagascar
Authors: Brenon Pierre 
Published: June 2020

Abstract
The phlogopite-bearing pyroxenites of Madagascar occur as interstratified lenses, transverse veins, and rare vertical columns in crystalline schists of the basement complex. They belong to the most highly metamorphic facies (the so-called granulite facies). The mica is concentrated along structural lines in the schists or, as in the case of the transverse veins, along an ancient fracture pattern. The latter are generally more important from an economic viewpoint. Exploration and exploitation of the mica would benefit greatly from an understanding of the different types of mineralization. If the parametamorphic nature of the diopside pyroxenites of southern Madagascar is proved, a new theory of mica mineralization must be formulated.
Formations quaternaires du havre de Blainville (Manche)
Authors: Durand Suzanne , Pelhate A. 
Published: June 2020

Abstract
Analysis of the heavy mineral and granulometric composition of the shore and harbor sands of the Blainville area, France, shows that an early Quaternary marine phase was followed by a period of emergence, then the Monastirian transgression, regression, the Flandrian transgression, and finally by the formation of the present dunes.
Le volcan sous-marin d'age acadien de Sidi-Said-Maachou (Maroc occidental)
Authors: Gigout Marcel 
Published: June 2020

Abstract
At three localities in the Sidi-Saied-Maachou area, a complex of volcanic rocks has been identified in the thick, otherwise uniform series of Acadian (Cambrian) green schists of the plateau region of Morocco, which is considered to represent a submarine volcano. Purplish schists, layers of organic limestone, and pyroclastic material, laid down in deep water, are cut by vertical dikes which fed sills and submarine flows of basic lava. The eruption was calm, resembling, on a much smaller scale, the emplacement of greenstones in geosynclines.
La terminaison meridionale des nappes sud-telliennes dans la region de Tiaret (Algerie)
Authors: Polveche Jean 
Published: June 2020

Abstract
In the Tiaret region, Algeria, a nappe of Oligo-Miocene material was emplaced during lower Miocene time, and both overlies and is overlain by lower Miocene beds. Thus three series of lower Miocene beds can be distinguished, solely on the basis of structure--autochthonous, slightly folded strata, transgressive on thebasement; the nappe itself, highly deformed; and subhorizontal beds, deposited after nappe emplacement. The zone of Miocene thrust slices, formerly considered subautochthonous, is therefore allochthonous. Displacement was over 23 kilometers.
Les nappes sud-telliennes entre Letourneux et Bordj-bou-Arreridj
Authors: Kieken Maurice 
Published: June 2020

Abstract
Geologic mapping shows that the region between Letourneux and Bordj-bou-Arreridj, Algeria, is underlain by several superposed nappes emplaced as a result of gravitational sliding. Eight units are distinguished, corresponding to displaced masses composed of material characterized by a progressively deeper facies. The nappes, derived from the north, were emplaced during the lower Miocene.
Observations structurales sur les Pyrenees occidentales
Authors: Viers Georges 
Published: June 2020

Abstract
The Igounce massif in the western French Pyrenees is not a Paleozoic massif but an accumulation of detrital material which was deposited in a Cretaceous (Cenomanian) trough. The so-called overthrust structure in the peak of the Lakhoura massif is a perched syncline of Senonian (Cretaceous) strata.
Algues calcaires codiacees fossiles d'Iraq, nouvelles et peu connues
Authors: Elliott Graham F. 
Published: June 2020

Abstract
Describes the following new or little known fossil codiaceans (algae) from Iraq--Cayeuxia piae, C. kurdistanensis n.sp., and Lithocodium aggregatum, from the Cretaceous, and Halimeda praemonilis, H. nana, and Ovulites morelleti from the Paleocene.
Sur des restes d'Hipparion sitifense Pomel, des calcaires lacustres de Mascara (Oran)
Authors: Arambourg Camille 
Published: June 2020

Abstract
Describes teeth of Hipparion sitifense from uppermost Pliocene lacustrine limestones of the Mascara region, Algeria. Three forms of tridactyl equines are now definitely known from north Africa, with H. sitifense representing an intermediate species. The Mascara find reveals for the first time the characteristics of the entire upper dentition.
Notes paleoichthyologiques
Authors: Guffroy Simone 
Published: June 2020

Abstract
A comparative study of the anatomy of an actinopterygian fish (Birgeria sp.) from southern Madagascar and specimens from other Triassic localities revealed no anatomical differences which would justify subdivision of Birgeria into two groups on the basis of size. A comparative study of the semionotid fish Semionotus capensis from the upper part of the Stormberg series of the Karroo system in southwestern Basutoland was also made.
Role morphologique de depots de travertins par des sources laterales aux cours d'eau dans le Tell algerien
Authors: Lambert Alexis 
Published: June 2020

Abstract
Gives several examples from the Tell region, Algeria, where travertine deposited by springs along the sides of streams has noticeably affected valley development. Although apparently insignificant at any given moment, the masses of material involved may be considerable in the course of time. The obstacle to erosion imposed by hard travertines may be the equivalent of a mountain range.
Poudingue de Gourin et poudingue de Montfort sur le pourtour de la region silurienne au sud de Rennes [with discussion]
Authors: Klein Claude 
Published: June 2020

Abstract
Observations in marginal zones of Silurian synclinal basins in the southern Rennes region, France, show that the Gourin conglomerate is not a Brioverian (Precambrian or Infracambrian) intraformational conglomerate, but is equivalent to the Montfort conglomerate discordantly overlying the Brioverian, and that both conglomerates are basal Ordovician.
Sur un Problematicum du Lias inferieur de la Haute-Marne, Siphonites heberti de Sap
Authors: Gardet Gustave , Laugier R. , Lessertisseur J. 
Published: June 2020

Abstract
Study of material from the lower Liassic of Haute-Marne, France, indicates that Siphonites heberti, previously considered an alga, probably represents traces of annelid worms that lived in tubes with cemented walls.
L'ordre de succession des phenomenes orogeniques et ses consequences
Authors: Gidon Paul 
Published: June 2020

Abstract
In several parts of the Alps it can be established that uplift preceded folding. This is also the case in parts of the Pyrenees and perhaps of the Andes. If this is true of whole mountain systems, compression is ruled out as a primary cause of folding. The geotectonic consequences of this reasoning, which in general support the hypothesis of gravitational sliding, are explored.
Sur l'existence d'un important systeme de fractures interessant le Continental intercalaire a l'W de l'Air (Niger, A.O.F.)
Authors: Joulia Francois 
Published: June 2020

Abstract
West of the Aier massif, French West Africa, a vast system of faults involves all formations up to and including the lower Cretaceous Continental intercalaire. The fractures were probably produced as a result of warping of the basement rather than folding. In view of the fact that Hercynian (late Paleozoic) folding was very weak, many of the faults observed in Devonian sandstones and in the Precambrian are probably products of post-Cretaceous deformation rather than Hercynian folding. The springs at Teguida are directly related to the faults, and copper and barite mineralization also seems to be related.
Geologie des Minquiers; premieres observations
Authors: Graindor Maurice J. , Roblot M. M. 
Published: June 2020

Abstract
Four rock complexes are distinguished in the Minquiers plateau, a partially emerged submarine plateau off the coast of France, north of Saint-Malo. From northwest to southeast, they are diorite, banded migmatitic rocks, granites, and gneisses. The gneisses and migmatites are the two oldest complexes; the granite is the youngest.
La sedimentation argileuse a attapulgite et montmorillonite
Authors: Millot Georges , Radier H. , Bonifas M. 
Published: June 2020

Abstract
Formation of attapulgite is related to calcareous and siliceous chemical deposits. In a marine environment, deposition of phosphates intervenes. The attapulgite is authigenic in origin, as is also the montmorillonite in chalks. The elements necessary for sedimentation characterized by abundant Si, Ca, and Mg are derived from differential leaching of material in continental areas which are being subjected to laterization. Such a history can be reconstructed for the Gao basin in the Sudan, French West Africa.
Observations preliminaires sur le gisement d'etain d'Abbaretz (Loire-Atlantique)
Authors: Chauris Louis , Pare B.  
Published: June 2020

Abstract
The tin-bearing quartz veins of the Abbaretz area, Loire region, France, occur in Ordovician schists which were subjected to granulite intrusion accompanied by contact metamorphism, intense deformation, during which a fault system striking parallel to the regional tectonic trend was produced, tourmalinization by pneumatolytic material introduced into fissures, and mineralization involving deposition of quartz, beryl, cassiterite, arsenopyrite, pyrite, chalcopyrite, molybdenite, and rutile (more or less in that order) during repeated movement on the faults and subsequent transverse faulting.
Contribution a l'etude de la microfaune des marnes plaisanciennes des Alpes-Maritimes
Authors: Marie Pierre , Perriaux J. 
Published: June 2020

Abstract
Identifies and lists the microfauna (principally foraminifers) found in the Plaisancian (Pliocene) blue and yellow marls at Vaugrenier, Abadie, and Saint-Martin-du-Var, Alpes- Maritimes, France.
Sur l'appauvrissement des eaux souterraines de l'Ile-de-France et en particulier de la nappe dite "du Soissonnais"
Authors: Castany Gilbert , Laffitte P. , Soyer R. 
Published: June 2020

Abstract
The water resources in the Champigny and Bartonian (Eocene) limestones, and particularly those of the "Soissonnais" aquifer in Cuisian sands, of the Ile-de-France area in the Paris basin, France, are being exhausted. Several remedies are suggested to conserve the quality, as well as the quantity, of water.
Hydrogeologie des formations volcaniques de l'Auvergne
Authors: Michel Robert 
Published: June 2020

Abstract
Ground-water distribution in the volcanic massifs of the Auvergne region, France, depends on the relationships of the various volcanic rock types (lavas, breccias, tuffs, pozzolan, ash). Variations in hydrogeologic conditions are described in terms of these relationships. The quantity of potable water exceeds local demand, so that some can be supplied not only to nearby urban areas but also to more distant places such as Limagnes.
Sur les alluvions quaternaires du Clain
Authors: Patte Etienne 
Published: June 2020

Abstract
Several Quaternary levels, in different states of preservation, are found in the Clain valley, France. The lower terrace gravels contain reindeer and Equus (Asinus) hydruntinus remains; these are overlain by a clay containing Mousterian artifacts, contemporaneous with Pleistocene loess. The 25-meter terrace of Saint-Georges-les-Baillargeaux corresponds to an abandoned channel; it contains remains of Elephas trogontherii and is overlain in places by a true loess. Solifluction has been important and occurred during several different phases.
Contribution a l'etude de quelques Asteropyginae (trilobites)
Authors: Pillet Jean 
Published: June 2020

Abstract
Type species for the trilobite genus Pseudocryphaeus and the subgenus Asteropyge (Metacanthina), proposed and briefly described in 1953, are here described in detail, as well as several related forms, including the new subspecies A. (M.) oehlerti praecursor and P. michelini barroisi.
Sur la nervation de quelques feuilles de Cordaites
Authors: Ledran Christiane 
Published: June 2020

Abstract
Study of the venation of Cordaites leaves, by means of photographic enlargements, indicates that the characteristics of the venation can serve as a criterion for identification, even of fragmentaryleaves, and suggests that such fossil leaves, extremely abundant in continental Carboniferous deposits, can be used for stratigraphic purposes.
Observations petrographiques sur les meulieres pliocenes
Authors: Alimen Henriette 
Published: June 2020

Abstract
Millstone capping the Pliocene sequence of the Beni-Abbes region, Algeria, exhibits a genetic relationship with underlying sandstone. Numerous grains of detrital quartz clearly show the effects of solution which could have been the source of the secondary silica (chalcedony and quartz). Induration was a near-surface process. Iron oxides, gypsum, and perhaps calcium carbonate appear to have played a role in the processes of substitution and induration.
Variation du niveau des nappes aquiferes du nord de la France
Authors: Leroux Edmond , Ricour J. , Waterlot G. 
Published: June 2020

Abstract
Northern France, with less annual rainfall than most other parts of the country and no large rivers, has extensive and increasing water-supply requirements because of the dense population and a rapidly expanding industry. The piezometric level of the Carboniferous limestone aquifer dropped 35 meters between 1917 and 1957, 15 meters of this between 1952 and 1956. Water tables in Cretaceous chalk and in Tertiary sands also have varied strongly. Serious water shortages are foreseen if there should be a succession of dry years.
Contribution a l'etude paleogeographique de la periode permienne dans la Provence cristalline
Authors: Bouillet Genevieve , Lutaud L. 
Published: June 2020

Abstract
Following a review of knowledge of the Permian depression bordering the Maures massif between Toulon and the vicinity of Cannes, France, the preliminary results of a paleogeographic and paleoclimatic study of the Permian period in Provence are presented, based on morphoscopic analysis of the Permian sediments of the region.
Vue d'ensemble sur le bassin sedimentaire cotier du Dahomey-Togo
Authors: Slansky Maurice 
Published: June 2020

Abstract
The sedimentary series of the coastal basin of Dahomey-Togo (west Africa) is known to have a thickness of about 700 meters. Overlying a Precambrian basement, it consists of a thick marine sequence from upper Cretaceous to middle Eocene, cut by faults. Several key horizons are established on the basis of microfaunas and argillaceous sedimentation. Comparisons can be made with other African basins on the basis of the paleontologic and sedimentologic criteria.
Les coupes du Guil et de l'Ubaye au travers de la zone brianconnaise (Hautes-et Basses-Alpes); essai de correlation tectonique [with discussion]
Authors: Debelmas Jacques , Gidon M. 
Published: June 2020

Abstract
Transverse sections across the Brianconnais zone are exposed in the Guil and Ubaye valleys in the French Alps. Both show superimposed nappes on the west, and thrust slices dipping toward Italy on the east. The origin of the latter is still unknown; they may possibly be due to deep-seated flow. Evidence of late- stage reverse thrusting is present in the Ubaye section, but is absent in the Guil section.
Evolution morphotectonique du Jura externe dans la demi-fenetre d'Aiglepierre
Authors: Caire Andre 
Published: June 2020

Abstract
In the Aiglepierre half-window in the outer Jura mountains, France, Triassic deposits of the Salins and Mont-Poupet groups rest on a substratum of upper Jurassic and Tertiary deposits. This substratum shows two erosion surfaces, distinct from the post-nappe surface which truncates the thrust slices of the overthrust area. With these surfaces and the Tertiary deposits as horizon markers, it is possible to trace a wave of Oligo-Miocene uplift which was propagated eastward toward the interior of the Juras.
Apercus et reflexions sur les schistes cristallins et les granites de la zone axiale pyreneenne entre l'Ariege et la Mediterranee
Authors: Guitard Gerard 
Published: June 2020

Abstract
New details are given on the structure of the Canigou-Caranca massif in the axial zone of the eastern part of the French Pyrenees. Crystalline schists, formed during general metamorphism and characterized by the extensive development of augen gneisses, and migmatites, granite gneisses, and granites, formed subsequently in an episode of regional granitization, are distinguished.
La base de la serie sedimentaire d'Amelie-les-Bains (Pyrenees-Orientales)
Authors: Guitard Gerard , Ricour J. 
Published: June 2020

Abstract
Describes a section in the Amelieles-Bains area in the eastern French Pyrenees that shows an almost continuous Mesozoic sequence. Two gypsiferous levels are present in the Triassic; the younger, considered Keuper, separates the dolomitic Muschelkalk from calcareous-dolomitic beds attributed to the Jurassic.
L'apport des travaux de la Compagnie d'exploration petroliere (C.E.P.) dans la connaissance du bassin tertiaire du Roussillon
Authors: Gottis Maurice 
Published: June 2020

Abstract
Summarizes the results of gravity, seismic, and aeromagnetic surveys and the sections traversed by two borings in the Roussillon Tertiary basin of the eastern Pyrenees.
Le Cretace superieur et l'Eocene des lambeaux charries de Coustouges
Authors: Casteras Marcel 
Published: June 2020

Abstract
Summarizes data on the tectonic position of upper Cretaceous and Eocene deposits of overthrust masses in the Coustouges basin, with particular reference to observations made during the east Pyrenees field trip of the Societe Geologique de France in September 1958.
De Perthus a Darnius; de Darnius a Figueras; de Figueras a Gerone
Authors: Fontbote Jose Maria , Virgili C. 
Published: June 2020

Abstract
Summarizes the geology observed along the route between Perthus and Gerona, Spain, of the eastern Pyrenees field excursion of the Societe Geologique de France in September 1958.
Quaternaire et Pliocene du Gurp (Gironde)
Authors: Paquereau Marie Madeleine , Schoeller M. 
Published: June 2020

Abstract
The stratigraphy of the Gurp region in Gironde, France, is reviewed in the light of new well data. Thick alluvial deposits underlie the Gurp clay. Pollen analysis indicates that the bed containing Elephas meridionalis is early Pleistocene and that the Gurp clay and older alluvium are Pliocene.
Observations sur le "Primaire" du Tagant (Mauritanie)
Authors: Delpy Jacques 
Published: June 2020

Abstract
A concordant series of formations outcropping in the Tagant plateau of Mauritania (west Africa) is provisionally referred to the Paleozoic because the upper formations can be dated as Gotlandian (Silurian)-Devonian. The structure of the plateau is typically "Tassilian"--gently dipping monoclinal beds truncated by cuestas. In the western part, however, there are both stratigraphic and tectonic anomalies (hiatuses and tight transverse folds).
Le Lias et le Jurassique moyen de la region de Kandreho (Madagascar)
Authors: Collignon Maurice , Rebilly G. , Roch E 
Published: June 2020

Abstract
Describes the Liassic and middle Jurassic stratigraphy of the Kandreho region and reports the presence of Liassic deposits elsewhere in Madagascar. Comparison with Saudi Arabia shows that certain Bajocian mollusks appeared there and in Madagascar earlier than in Europe.
Observations micropaleontologiques (foraminiferes) sur le Carbonifere marin du bassin de Fort-Polignac (Sahara oriental)
Authors: Durif Paul 
Published: June 2020

Abstract
Summarizes the results of micropaleontologic studies of the foraminiferal fauna of marine Carboniferous deposits of the Fort-Polignac basin in the eastern Sahara. Deposits at the base of the section (mainly Visean) are poor in microfossils, but beginning with the Collenia beds the microfauna is rich. Archaediscus is abundantly represented in the lower part (Namurian) and Profusulinella at the top (Moscovian).
Byrozoaires du Lutetien de Bois-Gouet (Loire-Atlantique)
Authors: Balavoine Pierre 
Published: June 2020

Abstract
Forty-six species have been identified in the bryozoan fauna of the Bois-Goueet area, France. New species, which are systematically described and figured, are Idmonea rostrigera, Micropora gouetensis, Romancheina gouetensis (first appearance of this genus in Europe), Poricella davidi, and Macroporina gouetensis n.g. n.sp. Thirty of the species are exclusively Lutetian; the other 16 are also found in the Bartonian or Priabonian.
La formation oolithique a polypiers de la Mouille (Haute-Saone)
Authors: Beauvais Louise 
Published: June 2020

Abstract
The upper Argovian (Jurassic) coral- bearing oolitic formation of the Mouille forest area, France, rests on a lower Argovian madrepore-bearing reef. Reef growth was apparently halted by subsidence at the end of lower Argovian time, and fields of crinoids grew on the reef surface. Subsequently slight uplift of the sea bottom led to deposition of the oolite, with development of a few new Donacosmilia colonies.