bluuebunny/crossref_metadata_2025_split huggingface dataset:
Progres dans la connaissance du Quaternaire de Casablanca (Maroc)
Authors: Biberson Pierre , Lecointre G. 
Published: March 2020

Abstract
Study of marine molluscan faunas from Quaternary deposits of the Casablanca region, Morocco, indicates two episodes during which the waters of the sea were cold, one during the Roman regression, the other during the Tyrrhenian transgression. The evolution of prehistoric industries exhibits a close relationship to fluctuations of the associated shore lines.
Precisions sur les deformations tectoniques dans le S du dome de la Mure (Isere)
Authors: Sarrot-Reynauld Jean 
Published: March 2020

Abstract
Following an outline of the different tectonic phases that have affected the Variscan range and discussion of the relations between the La Mure dome (Isere, France) and other crystalline massifs of the region, a series of sections is described which shows the details of folding in the sedimentary cover. The Seneppy massif bordering the dome on the west is shown to be autochthonous (as is the Connexe to the east); together with the dome it forms a tectonic unit with regard to both style and origin.
Lithoporella elliotti nov.sp., melobesiee nouvelle du Jurassique superieur des monts des Oulad-Nail, Atlas saharien (Algerie)
Authors: Emberger Jacques 
Published: March 2020

Abstract
A description of a new calcareous alga belonging to the family Melobesiae, Lithoporella elliotti, from upper Jurassic deposits of the Oulad Naiel mountains in the Saharan Atlas range of Algeria.
Sur l'importance et les caracteres du paleovolcanisme en Limousin septentrional (Massif Central francais)
Authors: Chenevoy Maurice 
Published: March 2020

Abstract
Amphibolites among the crystalline schists of northern Limousin, France, represent an original spilite-keratophyre association. A major volcanic episode contemporaneous with geosynclinal sedimentation can now be considered well established. Calcareous facies are essentially absent in the schist complex; the only marble known in the region may be the metamorphic product of sediments deposited in an environment locally enriched in lime as a result of extrusion of particularly calcic lavas and tuffs.
Etude des gneiss et granites migmatiques de Kaysersberg, des Trois-Epis et de Ribeauville dans les Vosges
Authors: Millot Georges , von Eller J. P. 
Published: March 2020

Abstract
The migmatitic areas of the Alsatian flank of the central Vosges massif have been mapped geologically. The Kaysersberg facies consists of banded gneisses and gneissic granites, with occasional basic inclusions. The more acid facies of the Trois-Epis, Alspach, and Ribeauville migmatites are described; these appear to be younger.
Decouverte et description d'une nouvelle espece de Productus du Carbonifere de l'Iran, Productus pruvosti nov. sp
Authors: Nazemi Fakhri 
Published: March 2020

Abstract
Describes a new rare species of Productus, P. pruvosti, from a Carboniferous locality in Iran. The shell shows a curious superposition of three layers of different character. In shape and reticulation, the apical region resembles that of semireticulate brachiopods. The radial ribs tend to disappear, and the general morphologic aspect approaches that of Permian P. horridus and more closely that of P. wishnu.
Essai sur l'evolution paleogeographique et le developpement tecto-orogenique d'un systeme geosynclinal; le secteur grec des Dinarides (Hellenides) [with discussion]
Authors: Aubouin Jean 
Published: March 2020

Abstract
The Mesozoic and Tertiary history of the Hellenides (Greek sector of the Dinarides) is traced. Three stages of development of the Hellenic geosyncline are recognized--a preliminary stage in which a system of ridges and troughs was developed; the geosynclinal stage proper, first open, then filled; and a terminal stage of orogenesis and related secondary movements.
Recherches sur les mineraux lourds du littoral du golfe de la Napoule et du golfe Juan
Authors: Duplaix Solange , Nesteroff V. D. 
Published: March 2020

Abstract
Study of terrigenous coastal sands from the Napoule and Juan gulfs on the coast of southern France shows that during transport and deposition the light and heavy fractions were sorted hydraulically. In the Juan gulf, the two fractions have been carried in opposite directions, the light components being derived from the west and the heavy minerals from the east.
Donnees nouvelles sur l'Antecambrien dans l'ouest de la France; Pentevrien et Brioverien en baie de Saint-Brieuc (Cotes-du-Nord)
Authors: Cogne Jean 
Published: March 2020

Abstract
The ophiolitic Erquy series, representing the base of the Brioverian in Brittany, France, rests discordantly on a crystalline complex of granite-gneiss, amphibolites, and dioritic migmatites. Later metamorphism has affected both basement and cover and tends to obscure their relationships. The name Pentevrian is proposed for the pre-Brioverian complex at the base of the series (represented by arkoses and conglomerates in places). Its exact age is not known, as is also the case with the lower Brioverian which also is probably Precambrian.
Le Tyrrhenien dans le cadre de la chronologie quaternaire mediterraneenne
Authors: Bonifay Eugene , Mars P. 
Published: March 2020

Abstract
The terminology for Quaternary marine formations of the Mediterranean is in a confused state at present. Although the terms Milazzian and Monastirian have had to be abandoned, shore lines corresponding to these terms exist at numerous places. It is proposed that the general term Tyrrhenian be used for these, and further subdivided into Paleotyrrhenian, Eutyrrhenian, and Neotyrrhenian where more precise dating is possible.
Esquisse geologique sur le massif cristallin de l'Air (Niger)
Authors: Raulais Maurice 
Published: March 2020

Abstract
The Aier crystalline massif, west Africa, is composed of folded, metamorphosed, and granitized Precambrian formations forming an isolated massif which rises above younger sedimentary formations of the adjacent area. The massif is an elongate horst trending north-south between faults 180 kilometers apart. The two oldest series in the complex are separated by a major unconformity; they correspond to the Suggarian and Pharusian of the Ahaggar mountains. The topography has been rejuvenated by large granite intrusions and recent volcanism. Tin, tungsten, and columbite deposits are being exploited in the massif. Its structure is considered favorable to the possible occurrence of uranium and petroleum in the periphery.
Distinction de deux series dans le Paleozoique du Tagant occidental (Mauritanie)
Authors: Delpy Jacques 
Published: March 2020

Abstract
Two series are distinguished in the Paleozoic formations of the western Tagant plateau region, Mauritania, separated by an erosional unconformity which may be regional--the Tijigja series (Ordovician?) and the Kasr el Barka series (Gotlandian-Devonian?).
Position systematique des Kazacharthra (arthropodes) d'apres de nouveaux materiaux des monts Ketmen et Sajkan (Kazakhstan SE et NE)
Authors: Novozhilov Nestor I. 
Published: March 2020

Abstract
Arthropods of the order Kazacharthra are classified as crustaceans belonging to the branchiopod subclass. Diagnostic characteristics of the order and of the genus Almatium are completed, and Jeanrogerium sornayi n.sp. is described on the basis of material from Jurassic localities in southeastern and northeastern Kazakhstan, USSR.
Observations sur les traces des organismes fouisseurs dans l'Ordovicien normand
Authors: Dangeard Louis , Rioult M. 
Published: March 2020

Abstract
Ordovician sediments in cores from different borings in lower Normandy, France, show evidence of the activity of burrowing organisms. Several types of traces and burrows are described. They are indicative of slow and calm sedimentation, otherwise either the animals could not live or the traces would have been mechanically obliterated after formation. They can also be used to determine tops and bottoms of beds and to furnish information on compaction of sediments. They are not a good criterion of depth because they are found over a wide range.
Les apports terrigenes dans les recifs du Sequanien du sud de La Rochelle (Charente-Maritime)
Authors: Lafuste Jean 
Published: March 2020

Abstract
The amount of detrital material ("quartz index") in the principal pre-reef, reef, and post-reef beds in the Sequanian (Jurassic) section south of La Rochelle, France, was determined quantitatively and the results are presented graphically. The dimensions and mineralogy of the detrital grains were also studied. No noticeable differences were found in the clastic material from reef and non-reef deposits. It is therefore concluded that reef growth, which began and ended abruptly, was not conditioned by variations in the material being supplied to the depositional basin, but by modifications of the physicochemical environment.
Sur la composition de quelques sables coquilliers a foraminiferes des lagons de la Nouvelle-Caledonie
Authors: Gambini Andree 
Published: March 2020

Abstract
Fragments of molluscan shells make up more than 50 percent of marine foraminifer-bearing shelly sands from two lagoonal localities near a fringing reef in Saint-Vincent bay, New Caledonia. The most abundant foraminifer is Marginopora vertebralis. Fragments of algae and corals together constitute only about 20 percent, despite proximity to the reef.
Granuloclassement vertical (graded bedding) et figures de courants (current marks) dans les calcaires purs; les breches de flanc des sillons geosynclinaux
Authors: Aubouin Jean 
Published: March 2020

Abstract
Describes graded bedding and current marks in microbrecciated limestones that are free of any terrigenous material. These microbreccias have been deposited on the flanks of geosynclines. It is thus shown that the existence of turbidity currents is independent of the nature of the material transported, as should be expected. From a stratigraphic point of view, the interpretation of these microbreccias requires great caution. They are monogenic, rather than polygenic. Examples are cited from the Senonian (Cretaceous) limestones of the Ionian trough (Greece).
Contribution a l'etude du Paleozoique nord-aquitain
Authors: Bugnicourt Daniel , Dalbiez F. , Dufaure P. 
Published: March 2020

Abstract
Several exploratory borings for oil in the north Aquitaine basin, France, have reached and penetrated the rocks underlying the Permo-Triassic and Jurassic formations. In places the substratum consists of metamorphic formations, in others of Paleozoic formations that can be dated by macrofaunas.
Une klippe de Cretace inferieur dans l'Oligocene du bassin de Forcalquier
Authors: Goguel Jean 
Published: March 2020

Abstract
Outcrops of lower Cretaceous deposits at the base of the continental Oligocene beds in the Forcalquier basin (Basses-Alpes, France), apparently overlying Cenomanian (middle Cretaceous) deposits, are described. Their occurrence is probably due to superfical gravity sliding of material from elements of a pre-Oligocene relief which has subsequently been obliterated.
Facies de l'Aptien et de l'Albien dans les Baronnies
Authors: Blanc Jean J. 
Published: March 2020

Abstract
The first results of sedimentologic investigations of Aptian-Albian (Cretaceous) blue marls of the so-called Vocontian trough in the Baronnies region, France, are presented. Their stratigraphic distribution and glauconitic sandstone intercalations are described. The marls appear to have been deposited in shallow epicontinental seas, generally in the open sea, at different depths (mean depth, some hundreds of meters or less); there was no "Vocontian trough." Deposition occurred under reducing conditions and was accompanied at intervals by submarine landsliding and slumping related to oscillations that were responsible for introduction of the clastic elements of littoral origin.
Quelques precisions sur les formations spilitiques de la couverture triasique du massif cristallin du Grand-Chatelard (Savoie)
Authors: Parjadis de Lariviere Nicole 
Published: March 2020

Abstract
The hitherto unstudied Triassic spilites of the south border of the Grand-Chatelard crystalline massif, France, are described in detail. It is concluded that they represent a lava flow of the composition of basanite, whereas the spilites north of the massif are pyroclastics and tuffs intimately associated with arkoses and limestones. The two spilitic formations may have originated from the same crater.
Sur un recif actuel, le banc des Hermelles de la baie du Mont-Saint-Michel; quelques renseignements documentaires
Authors: Dollfus Robert Ph 
Published: March 2020

Abstract
Presents maps of a modern reef constructed by polychaete annelids (Sabellaria alveolata) in the Mont-Saint-Michel bay, France, as it was in 1921, showing its relation to the shoreline and to the low-tide mark.
Observations sur l'Aptien et sur l'Albien des environs de Puget-Theniers (Alpes-Maritimes)
Authors: Thomel Gerard 
Published: March 2020

Abstract
Gargasian and Vraconian (Cretaceous) faunas are reported from beds above and below the unfossiliferous black marls in the vicinity of Puget-Theniers on the southern margin of the Barrot dome, France. The black marls therefore are not Aptian, but Albian in age.
Le Carbonifere marin du bassin de Fort-Polignac
Authors: Dubois Paul 
Published: March 2020

Abstract
A synthesis of cross sections of the marine Carboniferous of the Fort-Polignac basin in the eastern Sahara (Algeria) reveals three important stratigraphic facts--the presence of Tournaisian deposits, probably lower Tournaisian, below transgressive upper Tournaisian beds; the simultaneous character of the upper Tournaisian transgression throughout the whole basin; and discontinuity of sedimentation between the (lower?) Namurian and the Westphalian which is tentatively referred to the general hiatus between the lower and the middle-upper Carboniferous.
Contribution a l'etude des conodontes du Sahara (bassins de Fort-Polignac, d'Adrar Reggane et du J. Bechar); comparaison avec les Pyrenees et la Montagne Noire
Authors: Remack-Petitot Marie Louise 
Published: March 2020

Abstract
Study of the rich conodont faunas recovered from numerous borings and sections in the Fort-Polignac, Reggane, and Bechar basins (Algeria) in the Sahara and of faunas from the Pyrenees and the Montagne Noire in France demonstrates the value of conodonts in Paleozoic stratigraphy. They have corroborated the macrofaunal evidence. The conodont faunas permitted identification of different stages of the Carboniferous in the Paleozoic sections of the three basins in the Sahara, and precision of the stratigraphy of Famennian and other Devonian deposits of the Pyrenees and the Montagne Noire. The study shows the wide horizontal and relatively narrow vertical range of the conodonts.
Observations nouvelles sur le Jurassique inferieur et moyen dans les Cordilleres betiques sur la transversale de Malaga (Andalousie, Espagne)
Authors: Dubar Gonzague , Peyre N. , Peyre Y. 
Published: March 2020

Abstract
A study of the stratigraphic and structural relationships of 23 lower and middle Jurassic fossiliferous localities, most of them reported for the first time, in the Betic cordilleras of the Malaga region, Spain. The distribution of the various paleontologically defined horizons in the different structural units is summarized in a table.
Le Cretace superieur en Grece
Authors: Aubouin Jean , Godfriaux Ivan , Lys Maurice , Marie Pierre 
Published: March 2020

Abstract
A stratigraphic and paleontologic (particularly micropaleontologic) study of the upper Cretaceous of continental Greece. In the inner zones the upper Cretaceous is transgressive, whereas in the outer zones sedimentation has been continuous since Jurassic time.
Sur les flores viseennes du Maroc
Authors: Danze-Corsin Paule 
Published: March 2020

Abstract
Summarizes the principal characteristics of Visean (Carboniferous) floras of Morocco, with particular reference to the results of a systematic study of plant assemblages from four specific localities. The floras are characterized by an abundance of lepidophytes, the constant presence of Asterocalamites, and the almost complete absence of ferns. Comparison with Visean floras of other regions shows that they are homogeneous throughout the world.
Observations sur la sedimentation houillere
Authors: Grangeon Marguerite 
Published: March 2020

Abstract
Observation of the details of sedimentation in limnic and paralic basins can aid paleogeographic reconstructions of coal basins. Examples of many types of sedimentation are described, most of them from Permo-Carboniferous lake basins of the Central Massif of France, and illustrated by photographs of drill cores.
La transgression ordovicienne sur les marges orientales de l'Armorique
Authors: Klein Claude 
Published: March 2020

Abstract
The purple schists and arkoses on the eastern margin of the Armorican massif, France, which discordantly overlie Brioverian rocks and grade imperceptibly into Armorican sandstones, are assigned to the Tremadocian and the base of the Arenig (Ordovician). In the Maine region, there is a stratigraphic gap between the Blandouet and Armorican sandstones, whereas in most of the synclines of Normandy, sedimentation was continuous from the Cambrian to the Silurian. A scheme of correlation between Normandy and Brittany is proposed based on the presumed stratigraphic equivalence of the so-called red series of the lower Ordovician (purple schists of Brittany, Sille psammites, Saint-Remy red shales).
Les conditions geologiques de la chute de Sassenage pres de Grenoble
Authors: Barbier Reynold 
Published: March 2020

Abstract
Geologic investigations showed that in spite of the degree of karst development, construction of an underground tunnel for a hydroelectric installation was possible in the vicinity of the Sassenage falls near Grenoble (France), in the area of the Sassenage fold-fault. Only two small cavities were encountered over a distance of some 3.5 kilometers. The results of the geologic studies that prepared the way for construction of the installation (which began operation in 1958) are summarized.
L'etage a niveaux charbonneux du Brioverien normand (X2a)
Authors: Roblot Marie Madeleine 
Published: March 2020

Abstract
Suggests that three carbonaceous microquartzite (phtanite) zones are present in the Brioverian complex of Normandy, France. They occur only in the Vardes stage (X &lt;sup&gt;2a&lt;/sup&gt; ). These recrystallized rocks contain microorganic remains resembling spores.
Contribution a la connaissance de l'Albien et du Cenomanien de la vallee de l'Asse (Basses-Alpes)
Authors: Thomel Gerard 
Published: March 2020

Abstract
A preliminary report on studies of the Cenomanian and Albian (Cretaceous) deposits of the Asse valley in the French Alps. Comparison of the outcrops and faunas of the Beynes and Chabrieres areas with those of neighboring regions shows that the valley region represents the zone of transition between neritic deposits characterized by a Vocontian facies and littoral deposits of Durancian shores.
Precisions sur la paleogeographie du flanc occidental du synclinal de Thones au Cretace moyen et superieur (Haute-Savoie)
Authors: Dondey Daniel 
Published: March 2020

Abstract
Study of facies variations in the Albian (Cretaceous) deposits along the west flank of the Thones syncline in Haute-Savoie, France, suggests that the limits of stratigraphic gaps in the Albian section, and in the upper Cretaceous, should be modified. The discovery of a Globotruncana linnei fauna in the highest beds of the folded upper Cretaceous sequence permits dating of east-west folding as having occurred between the Campanian-Maestrichtian and the Priabonian (Eocene).
Donnees nouvelles sur le Cretace subbetique au sud-est de Caravaca (prov. de Murcie, Espagne)
Authors: Paquet Jacques 
Published: March 2020

Abstract
The Quipar and Pena Rubia ranges southeast of Caravaca in Murcia, Spain, present a probably complete lower and middle Cretaceous section. The gradual passage from limestone deposition in the Tithonian (Jurassic) to deposition of Berriasian marls (lower Cretaceous) is reflected in the sequence. The different members of the Neocomian and Barremian are present. The Aptian could not be defined with certainty. The Albian is represented by blue micaceous marls carrying a pyritized ammonite fauna.
La Bresse et le Bas-Dauphine au Tertiaire
Authors: Lefavrais-Raymond Andree 
Published: March 2020

Abstract
Tertiary formations of the Bresse and lower Dauphine basins, France, are correlated and their paleogeography reconstructed. Conditions in both regions were similar during the Eocene and Oligocene, but differed considerably in the upper Tertiary, particularly in the Miocene. The Miocene section in lower Dauphine is very thick, whereas in Bresse it is very thin.
Subsidence differentielle de la plate-forme epicontinentale carbonifere dans le bassin d'Abadla (region de Colomb-Bechar)
Authors: Deleau Paul C. 
Published: March 2020

Abstract
Studies of a coal deposit on the northern and eastern margins of the Abadla basin, Algeria, have provided detailed information on the stratigraphy and sedimentation of the upper Westphalian C and Westphalian D (Carboniferous) beds of the basin. The basin is a large synclinorium subdivided into a series of secondary basins. The forests from which the coal was derived persisted for longer periods on the anticlinal uplifts on the northern margin than elsewhere. The most productive coal seams are found in several troughs in the anticlines. The troughs are the product of differential epeirogenic subsidence, and thicker sequences were developed in those which were more frequently emergent.
Un massif granitique a structures concentriques, le Tisselliline
Authors: Bouvet Michel , Reboul C. 
Published: March 2020

Abstract
Four principal type of granite are recognized in the Adrar Tisselliline, a granitic massif intruding the Pharusian (Precambrian) Serouenout basin in the northeastern Ahaggar mountain region, Algeria. These form concentric zones and apparently do not represent a single facies.
Sur la stratigraphie des series antecambriennes dans la region du Tafassasset moyen (Ahaggar oriental)
Authors: Blaise Jacques 
Published: March 2020

Abstract
Studies of the Precambrian formations in the central Tafassasset area of the eastern Ahaggar mountains (Algeria) in the Sahara cast doubt on the existence of a Suggarian horst east of the great fault at 8 degrees 30'. The formations are difficult to distinguish from Pharusian formations to the north and south.
Sur la presence du genre Anabacia Milne-Edwards non d'Orbigny dans le Toarcien inferieur des Pyrenees catalanes
Authors: Baudrimont Albert Frederic , Beauvais M. 
Published: March 2020

Abstract
A new species, Anabacia ilerdensis, from the lower Toarcian (Jurassic) Hildoceras bifrons marly limestones of the Catalonian Pyrenees (Spain) is reported and described.
Observations nouvelles sur les accidents siliceux situes au sommet de la "Pierre de Caen"
Authors: Dangeard Louis , Rioult M. 
Published: March 2020

Abstract
Large numbers of silicified tubelike structures of remarkably uniform diameter, characteristically elliptical in cross section, occur in middle Bathonian (Jurassic) sedimentary rocks of the Caen region of Normandy, France. These tubes range in thickness from one to five centimeters, with lengths of as much as three meters. Typically, they consist of a highly silicified axial portion in a less silicified envelope, with surrounding rock unaffected. All gradations are found, however, ranging in a complete series from incipient silicification of the axial portion only, to intense silicification extending some distance into the surrounding rock. Associated faunal microdetritus comprises sponge spicules, foraminifera, and fragments of bryozoans, mollusks, and echinoderms. The tubes are believed to be of vegetal origin. Their characteristics suggest that they were mangrove roots, silicified at very shallow depth.