bluuebunny/crossref_metadata_2025 huggingface dataset:
Au sujet de l'Hippopotamus hipponensis Gaudry
Authors: Arambourg Camille
Published: June 2020

Reaffirms the hexaprotodont character of remains of Hippopotamus hipponensis from upper Pliocene deposits of the Bone region, Algeria.
Observations petrographiques sur la feuille de Pontivy
Authors: Jeremine Elisabeth
Published: June 2020

Describes granites (with chemical analyses), dolerites, and amphibolites of the Pontivy area, France.
Tectonique des terrains de couverture du bassin houiller du Gard dans la vallee de l'Auzonnet
Authors: Louis Jean
Published: June 2020

Identifies four successive stages of dislocation in the Triassic strata overlying Carboniferous deposits of the Auzonnet valley in the Gard coal basin, France. The faults are all Tertiary in age. Intense folding of the Carboniferous deposits took place during pre-Triassic crustal movements.
Essai d'etude phylogenique des gryphees liasiques
Authors: Charles Robert P.
Published: June 2020

Distinguishes four groups among the Liassic pelecypods belonging to the genus Liogryphaea and concludes that the ancestral form is Ostrea hisingeri.
Sur l'existence, chez Hippurites radiosus des Moulins, d'une cavite homologue des canaux palleaux des caprinides
Authors: Dechaseaux Colette , Casalis M.
Published: June 2020

Hippuritids are generally considered to lack the pallial canals and accessory cavities characteristic of the caprinids. Specimens of Hippurites radiosus have been found in which such accessory cavities are present. Structural homogeneity of rudistid pelecypods is thus further substantiated.
Contribution a l'etude tectonique de l'Anatolie centrale (Asie Mineure centrale)
Authors: Lahn Ervin
Published: June 2020

Central Anatolia, Turkey, is an intermediate zone, whose structure was determined principally by vertical crustal movements, in contrast to the Alpine structures, produced mainly by horizontal crustal movements, which bound it on the north and south.
Observations et hypothese au sujet de la serie cretacee de la Bigorre
Authors: Dreyfuss Maurice
Published: June 2020

Concludes that the Cretaceous of the Bigorre region, France, is composed of a continuous series ranging from lower Cretaceous Aptian strata to upper Cretaceous Flysch deposits and that Cretaceous breccias of the region are not tectonic in origin but were formed at several different times by deposition of detrital material derived from pre-Cretaceous masses, which were present as topographic highs in the depositional basin.
Sur quelques gisements lorrains de roches carbonatees a structure cone-in-cone
Authors: Maubeuge Pierre L.
Published: June 2020

Data obtained from study of the stratigraphic relations of Triassic and Liassic formations characterized by the presence of cone-in-cone structures in Lorraine, France, support the conclusion that the cone-in-cone structures are the product of mechanical processes related to differential deformation of over- and underlying more rigid layers.
Recherches sur quelques calcaires lacustres du bassin de la Loire
Authors: Bourcart Jacques
Published: June 2020

An account of the composition and formation of Eocene and Oligocene lacustrine limestones of the Loire basin, France. It is concluded that the limestones were formed from detrital material and that silicification was due to the presence of an abundance of diatoms in the lake waters.
La genese et l'evolution des gisements de nickel de la Nouvelle-Caledonie
Authors: Chetelat E. de
Published: June 2020

The nickel ores of New Caledonia are the product of concentration of hydrous nickel and magnesium silicates during laterization of peridotite. The ore minerals are primary magmatic constituents of the parent rock, which is considered to have been intruded in the Tertiary. Serpentinization of the peridotite plays only a minor role in the genetic process; impermeable serpentinized zones acted as a barrier to the further migration of nickel-bearing solutions and thus aided concentration.
Le Lias inferieur des Cevennes aux environs d'Ales (Gard)
Authors: Brousse Marcel
Published: June 2020

Field work in the vicinity of Ales in the Cevennes mountains, France, shows that some of the strata previously mapped as middle Liassic are lower Liassic in age. Annotated faunal lists supporting the lower Liassic age of proposed revisions are given.
Observations sur les "limons" des environs de Bourges [with discussion]
Authors: Bouillet G.
Published: June 2020

Describes surface deposits of two localities in the Bourges area, France, previously mapped as loam. The deposits of one locality are composed of transported reworked material; those of the other were formed by alteration in place of Jurassic limestones.
Observations sur la ride triasique de Belus (Landes)
Authors: Dupouy-Camet Jacques
Published: June 2020

Recent borings along a north-south line in the Belus region, Landes, France, show that a Triassic diapir is wedged into the core of the Belus fold. The upper Cretaceous and Tertiary formations of the Belus-Saint-Lon region were subjected to four stages of tectonic activity. Injection of the diapir structures probably took place during Aquitanian crustal movements (the last of the four stages).
Massif granitique du Lys-Caillaouas dans la Haute-Garonne
Authors: Raguin Eugene , Destombes J. P.
Published: June 2020

The Lys-Caillaouas granitic massif in the upper Garonne region, France, is characterized by the presence of intercalated lenses of gneiss and peripheral aplite dikes (granulite). The massif is considered an intermediate type, possessing characteristics of both migmatite masses and intrusive bodies, whose formation took place during the principal phase of Hercynian (late Paleozoic) folding.
A propos de la notion de niveau de base
Authors: Guillien Yves
Published: June 2020

Observations in the Charente valley, France, support the conclusion that eustatic changes of sea level affect the base level of erosion and the regimen of rivers only in the lower parts of stream valleys.
Phenomenes glaciaires gondwaniens a Madagascar
Authors: Hirtz Pierre
Published: June 2020

Cites evidence from basal beds of the Permo-Carboniferous section of Madagascar and from the surface of the underlying metamorphic basement which supports the concept of a Gondwana glaciation in the region.
Observations stratigraphiques sur la couverture tertiaire du dome de Villagrains-Landiras (Gironde)
Authors: Vigneaux Michel
Published: June 2020

Describes the Tertiary section revealed by a boring in the axial zone of the Villagrains-Landiras anticline in the Aquitaine basin, France. The anticline was a land mass from the end of the Cretaceous until the Stampian (Oligocene) after which it was partially or completely covered by transgressing seas until the Aquitanian (Miocene). Uplift took place after the Aquitanian.
Etude sur les Ostreidae du Nummulitique du Senegal
Authors: Gorodiski A.
Published: June 2020

Describes ostreids (including Ostrea cayorensis n.sp.) from Nummulitic (Tertiary) deposits of Senegal, French West Africa, and discusses their paleogeographic significance.
Une coupe transversale naturelle du versant S du massif de la Tete de Gaulent (Hautes-Alpes); la rive gauche du torrent de Tramouillon pres de Saint-Crepin
Authors: Debelmas Jacques
Published: June 2020

Describes and illustrates a crosssection of the south slope of the Tete de Gaulent massif in Hautes-Alpes, France, exposed along the right bank of the Tramouillon torrent near Saint-Crepin. Two Brianconnais nappes are superposed, with a zone of thrust slices lying between. Several repeated series in the high massif are interpreted as frontal crenulations of the upper nappe. Gliding took place along Carboniferous beds, which are laminated and attenuated.
Sols polygonaux dans l'ile de Re (Charente-Maritime)
Authors: Ters Mireille
Published: June 2020

Describes polygonal soils and other periglacial features developed on the shores of Re island, Charente- Maritime, France. Two distinct episodes of cryoturbation are distinguished, subsequent to early Monastirian (post-Wuerm) times.
Les phenomenes littoraux dans la zone internationale de Tanger (Maroc)
Authors: Lafond Louis Robert
Published: June 2020

Analyzes shore processes along the coast in the vicinity of Tangier. Sandy sediment is produced and transported mainly by marine currents and waves, and to some extent by eolian action by the east winds; the fluviatile contribution is negligible. Construction of a breakwater has upset the sedimentary equilibrium and cut off the great beach at Tangier from its normal source of supply. As a result, transfer of sand within the bay is limited to the perimeter of the beach; erosion is taking place at the eastern end, sedimentation at the western, and a new beach is being built up east of the jetty. Although some silting of the roadstead has begun, it is predicted that this will diminish and not seriously affect the port.
Recentes variations du niveau des mers et des terres
Authors: Cailleux Andre
Published: June 2020

Measurements of mean sea level from 1885 to 1951 reveal a eustatic rise of 1.3 mm per thousand years, probably due in part to the rapid melting of glaciers in recent time. Superposed on this are the effects of regional deformation, which, apart from isostatic adjustment to deglaciation, consist of subsidence in areas of heavy sedimentation (up to a maximum of 4.1 mm) and uplift along rocky coasts where sedimentation is negligible (up to 3.77 mm). The present rate of change is of the same order as that associated with past transgressions of the sea and epeirogenic and orogenic movements.
Les formations plio-quaternaires de la region d'Antibes
Authors: Ottmann Francois
Published: June 2020

The Antibes region, a vast syncline, is the only part of the French Mediterranean coast where a complete Plio-Quaternary series was deposited. Details of the marine transgressions and regressions, as worked out from the stratigraphic column, are presented. The Plaisancian blue marls and Vaugrenier sands mark maximum Pliocene and Quaternary transgressions, respectively; maximum emersions are indicated by late Pliocene oxidation of the blue marls and by Quaternary continental deposits.
A propos de l'histoire du continent africain
Authors: Termier Henri , Termier G.
Published: June 2020

The definition of a unit of structural evolution which can be applied to Precambrian as well as to younger areas is discussed, and the spatial unit "orogen" is selected as the most suitable term for such a unit. It means any zone in which orogenic movements occur. This term is broader than "geosyncline," for such movements are not limited to geosynclines. The orogens of the different parts of the earth vary greatly in dimension, form, and situation with respect to older zones. The stages of a "drama" (a term preferred to "orogenic cycle") are outlined and applied to an interpretation of the history of the African continent.
Omochoerus maroccanus nov. sp., nouveau suide marocain
Authors: Ennouchi Emile
Published: June 2020

Assigns fossil teeth found near Rabat, Morocco, to Omochoerus maroccanus n.sp. This discovery extends the known area of distribution of members of the genus from Lake Rudolf to the Atlantic, and establishes a second Villafranchian zone.
Contribution a l'etude stratigraphique et structurale du detroit soudanais [with discussion]
Authors: Radier Henri
Published: June 2020

The Sudan trough in French West Africa is located between the central Saharan massif and the west African shield. It was produced in a zone of weakness in a vast rigid group of crystalline rocks and has been in existence since Cenomanian (Cretaceous) time. Sedimentation in the trough has been sporadic; the formations are neither extensive nor thick. Structural phases strongly developed in the northern part of the central Saharan massif are weakly recorded here.
Famennien terminal aux environs de Beni-Abbes (Sahara nord-occidental)
Authors: Petter-Receveur Germaine
Published: June 2020

Describes the sections and ammonite faunas of two uppermost Famennian (Devonian) localities near Beni-Abbes (Algeria) in the northwestern Sahara. The impoverishment of the faunas and the development of sandy facies within the sections were caused by fluctuations of the bottom of the depositional basin, whose maximum amplitude occurred at the end of the Devonian or the beginning of the Carboniferous.
Georges Dubois (1890-1953)
Authors: Pruvost Pierre
Published: June 2020

A biographic account of the French geologist Georges Dubois, who contributed extensively to knowledge of the Quaternary of northern France; includes a bibliography of his publications.
Contributions a l'etude du Quaternaire des regions de Palerme et de Milazzo (Sicile)
Authors: Ottmann Francois , Picard Jacques
Published: June 2020

Reconstructs the Quaternary history of the Sicilian coastal regions near Palermo and Milazzo, Italy, interpreting the faunal associations and stratigraphy in the light of recent oceanographic investigations.
Sur l'age de l'ankaratrite de Rougiers (Var) et ses relations avec le Trias environnant
Authors: Gueirard Simone
Published: June 2020

The folded and fractured Triassic formations in the vicinity of Rougiers, Var, France, are covered locally by a flow of ankaratrite which issued along a fault cutting the eastern end of the Sainte-Baume massif. The age of the fault, and consequently that of the flow, is Nummulitic (Eocene or post- Eocene). Igneous pebbles in the upper Muschelkalk attest to an earlier volcanic episode which took place in the Triassic (probably Muschelkalk).
Recherches de geologie sous-marine profonde
Authors: Bourcart Jacques
Published: June 2020

Reviews investigations in the field of submarine geology which have been carried out during the last decade and discusses their geologic significance, with particular reference to French studies of the continental platform off the coast of France, the submerged area between Corsica and Liguria, and the Algerian coast.
Existence de l'Eocene moyen et superieur dans la region de Redjas-Ferada au NW de Constantine (Algerie) [with discussion]
Authors: Durozoy Guy , Magne Jean
Published: June 2020

On the basis of their microfauna, the black marls overlying lower Eocene limestones in the Redjas- Ferada region of northwestern Constantine, Algeria, are assigned to the middle and upper Eocene. This necessitates readjustment of previous paleogeographic concepts.
La geologie du sous-sol de Saucats (Gironde)
Authors: Magne Andre , Mattauer Maurice , Moyes Jean
Published: June 2020

Describes and interprets the Tertiary section encountered in drilling for water at Saucats, Gironde, France. From top to bottom, marine Burdigalian, marine and lacustrine Aquitanian, and marine upper Oligocene were traversed. The boundary between the Miocene and Oligocene is gradational. The section indicates that deposition took place in a deep synclinal basin.
Quelques observations sur la mobilite et la diffusion du potassium au cours du metamorphisme
Authors: Dutt Amitava
Published: June 2020

The mobility and diffusion of potassium during metamorphism has been studied by means of measurement of radioactive K 40 , which bears a constant relation to total percentage of potassium, in the metamorphic rocks of the Mount Sorrel district, Leicestershire, England.
Sur la geologie de la galerie Isere-Arc (Savoie)
Authors: Bordet Claude
Published: June 2020

Describes the geologic section exposed in a tunnel which traverses two branches of the Belledonne massif, between the Isere and Arc valleys, France.
Sur un nouveau sous-genre et deux especes nouvelles d'Astarte du Jurassique de Kutch (Inde)
Authors: Agrawal Surendra Kumar
Published: June 2020

Describes a new subgenus and two new species of Astarte from a Jurassic pelecypod fauna from the Habo (Chari) series of the Jhura hill, India.
Une operculine cordelee de l'Eocene inferieur de la Cote-d'Ivoire, Operculina (Nummulitoides) tessieri n. subgen., n. sp
Authors: Abrard Rene
Published: June 2020

Describes a new spiral operculine foraminifer from lower Eocene deposits of the Ivory Coast, French West Africa, Operculina (Nummulitoides) tessieri, n.subg. n.sp.
Elements d'une etude biometrique de quelques especes d'Echinolampas eoceniques
Authors: Roman Jean
Published: June 2020

A biometric study and statistical analysis of several common species of Echinolampas from middle and upper Eocene localities of France show the value of these methods as a reliable basis of comparison of species for systematic revision of a genus of echinoids.
Les trilobites Otarionidae du Devonien armoricain
Authors: Pillet Jean
Published: June 2020

Recent work has made it possible to determine the Devonian representatives of the trilobite family Otarionidae from the Armorican massif, France. Most of the material consists of isolated or fragmentary specimens. Of the eleven different Devonian forms, eight are identified specifically, among them a new species, Otarion (Otarion) ferronnierense, from the base of the middle Devonian.
A propos des migmatites pyreneennes
Authors: Zwart Hendrick J.
Published: June 2020

Observations in the Saint-Barthelemy massif (France) and in other localities in the Pyrenees indicate that metasomatic enrichment in silica and soda (of the order of some 5 to 10 percent) caused alteration of schists into migmatites characterized by a quartz diorite composition. The veinlets in the migmatites are replacement phenomena. Two phases of recrystallization are recognized, a synkinematic phase which caused formation of the schistose migmatites, and a static phase in which these were in part recrystallized to massive rocks. In mica schists, the static phase produced andalusite.
A propos de la theorie bio-rhexistasique
Authors: Termier Henri , Termier G.
Published: June 2020

The formation of siliceous crusts, such as that of the Eyre lake basin in Australia, and other examples of silicification can probably be explained by the bio-rhexistasy theory. On the other hand, tropical vegetation and weathering do not seem to affect the sedimentary regime off the coast of Indonesia, as would be expected according to the theory. It is concluded that the theory is valid for stable areas, but that the nature and regime of sedimentation in unstable areas are largely a function of orogenic and probably also epeirogenic activity.
Sur l'origine des impregnations uraniferes des schistes houillers de Saint-Hippolyte (Haut-Rhin)
Authors: Grimbert Arnold
Published: June 2020

The origin of the low-grade uranium mineralization in Carboniferous shales of the Saint-Hippolyte area, France, is still in doubt. Two plausible explanations are outlined, and it is stressed that a sedimentary origin cannot be ruled out in spite of the presence of sulfides, generally considered an index of hydrothermal origin.
Contribution a l'etude des formations quaternaires du Bas-Languedoc
Authors: Riviere Andre , Vernhet S.
Published: June 2020

The Quaternary terrace deposits on the east shore of the Paurel lagoon in the lower Languedoc region, France, are characterized by angularity of their elements, and seem to be lagoonal-limnic deposits almost identical with those forming today. Individual outcrops are described, and shore-line fluctuations (due predominantly to eustatic changes of level) are traced.
Trois especes nouvelles de Proetidae (trilobites) devoniens
Authors: Pillet Jean
Published: June 2020

Describes three new species of trilobites from Emsian (Devonian) limestones of the Chauffour quarry, Angers, France--Proetus (Proetus) aplanatus, P. (P.) pseudotenuis, and P. (P.) rogeri.
La symetrie et le developpement de l'appareil septal chez quelques polypiers anthozoaires de la famille des Stylinidae
Authors: Lafuste Jean
Published: June 2020

Study of corals belonging to the family Stylinidae from Sequanian (Jurassic) deposits near La Rochelle, France, has led to the creation of the subgenus Heliostylina, characterized by transitory bilateral symmetry of the septa. This bilateral symmetry is a fundamental feature but may be masked by the hexaradial symmetry of the adults in some forms.
Les formations recifales miocenes de la Catalogne espagnole
Authors: Chevalier Jean Pierre
Published: June 2020

Study of Miocene reef formations in Catalonia, Spain, shows that the Valles-Panades region was covered by a vast gulf in the Vindobonian epoch, in which thick sediments were deposited. More or less continuous reefs fringed the borders of this gulf.
Sur la flore du bassin houiller d'Argentat (Correze)
Authors: Doubinger Jeanne
Published: June 2020

The flora from Carboniferous coal measures of the Argentat basin, Correze, France, is dated as uppermost Stephanian B. It is older, however, than flora of the Brive basin, which is also Stephanian.
Pierre Lory (1866- 1956)
Authors: Moret Leon
Published: June 2020

A biographic sketch and bibliography (198 entries) of the French Alpine geologist P. Lory.
Presence de differents types d'accidents siliceux dans le Senonien superieur de Dumes (Landes)
Authors: Boulanger Dominique , Deicha G.
Published: June 2020

Describes different types of quartz concretions and cherts in upper Senonian (Cretaceous) limestone in the vicinity of Dumes, France. They are due to recrystallization in place at moderate temperatures and pressures, In no case are they the product of soil-forming processes.
Observations sur deux niveaux mineralises dans le Paleozoique inferieur des monts du Minervois (Montagne Noire, Aude); mineralisations, lithologie et stratigraphie; contribution au debat syngenese-epigenese
Authors: Boyer Francois , Routhier P.
Published: June 2020

A sparsely mineralized zone consisting essentially of galena, pyrite, and barite occurs at the top of an upper Georgian (Cambrian) calcareous dolomite sequence in the Minervois mountains, southwestern Montagne Noire region, France, and can be followed for more than 12 kilometers. Its constant association with a particular lithofacies suggests that the mineralization is syngenetic. Another zone of galena and sphalerite mineralization is localized in recrystallized limestone and nodular calcareous schists, attributed to the middle Tremadocian, and can be followed for more than three kilometers. this zone also appears to begenetically correlative with sedimentologic and paleogeographic conditions.
Quelques remarques relatives a la geochimie des filons epithermaux a pechblende
Authors: Geffroy Jacques , Sarcia J. A.
Published: June 2020

The Erzgebirge pitchblende veins were emplaced during the Hercynian orogeny (Paleozoic) or during a late Hercynian cycle, contemporaneously with the Erzgebirge granites. Deposits like those of the Limousin region, France, are much younger than the enclosing granites. The Erzgebirge-type ores (Germany; Cornwall), characterized by Ni-Co-Bi-Ag-U, have been, or are, producers of tin, with accessory tungsten, whereas the Limousin-type ores (Portugal; France) produce tungsten with accessory tin. The Limousin-type ores are attributed to late-stage leaching from granitic zones subjected to large-scale deformation; they are therefore associated with zones of mylonization.
Les phases tectoniques du NE du Devoluy et leur influence structurologique
Authors: Glangeaud Louis , d'Albissin M.
Published: June 2020

A detailed study of the structure of the northeastern part of the Devoluy region, France, shows that the superimposed effects of different tectonic phases (Turonian and Alpine) can be recognized on the scale of the fold and of the microfold. Geodynamic solutions are proposed for analysis of the effects of erosion, differential behavior of limestones and plastic beds, landslides, and isostatic readjustment which intervened during deformation.
La subsidence du recif campanien de Vigny [summ.] [with discussion]
Authors: Marliere Rene
Published: June 2020

Study of the reef complex exposed in the Bois des Roches quarry in the Vigny region, France, shows repeated variations of depositional conditions, successive phases of penecontemporaneous erosion, and ruptures in the peripheral zone and in overlying beds. The age is undoubtedly Campanian (Cretaceous); arguments to the contrary are refuted.
Narbonne a Perpignan, par Durban, Leucate-Plage, Treilles, Fitou, Salses et Rivesaltes
Authors: Barrabe Louis
Published: June 2020

Reports geologic features observed along the route of the eastern Pyrenees excursion of the Societe Geologique de France in September 1958, from Narbonne to Perpignan (via Durban and the Leucate marsh).
Itineraire de haut Conflent et Cerdagne
Authors: Fontbote Jose Maria , Cavet P.
Published: June 2020

Reports geologic features observed in the upper Conflent and Cerdagne basins during the eastern Pyrenees field excursion of the Societe Geologique de France in September 1958.
Observations petrographiques nouvelles sur les niveaux saliferes du Trias moyen de Lorraine
Authors: Laugier Raymond
Published: June 2020

Deep wells in Lorraine, France, at distances of some 70 kilometers from each other, traverse the middle Muschelkalk (Triassic). Oolitic horizons were encountered in beds of the anhydrite group of the salt formation associated with the so-called Pexonne clays. The sections in three wells are described in detail, and the dolomitic oolites are discussed. Several epigenetic stages of replacement and mechanical deformation are recognized in the oolitic horizons.
La flore fossile du bassin houiller de Montvicq-Doyet-Bezenet (Allier)
Authors: Freytet Pierre
Published: June 2020

The plants represented in six fossiliferous localities in the Montvicq-Doyet-Bezenet coal basin of Allier, France, are upper Stephanian (Carboniferous) in age, and the flora is very similar to that of the Commentry basin.
Les bryozoaires aquitaniens de Qoum (Iran)
Authors: Furon Raymond , Balavoine P.
Published: June 2020

Of the 37 species identified in the bryozoan fauna from Aquitanian (Tertiary) marls of Qoum, Iran, 16 are cyclostomes and 21 are cheilostomes. The cyclostomes are not good guide fossils in that six of the species are still living (four since the Cretaceous). Fifteen of the cheilostome species have existed since the beginning of the Miocene.
Quelques considerations sur la vie recifale au Miocene dans le bassin mediterraneen
Authors: Chevalier Jean Pierre
Published: June 2020

The stages of reef formation are outlined on the basis of observations on Miocene reefs of the western Mediterranean basin. At a depth of about 100 meters there is a zone in which reef and nonreef facies can coexist. The paleoecologic conditions of a given stratigraphic horizon can be reconstructed from detailed analysis of reef and subreef layers.
Contribution a l'etude geologique de l'ile Espiritu Santo (Nouvelles-Hebrides); 2, Roches volcaniques
Authors: Sagatzky Jean
Published: June 2020

Continuation of a study of the geology of Espiritu Santo in the New Hebrides; deals with the volcanic rocks of the island. The rocks identified in the volcanic complex are andesites, labradorites (basalts), and associated tuffs. Most of them are older than the Miocene limestones of the island. The constituent and accessory minerals of each are listed.
Le Tertiaire du bief des Lavaux (pres de Pontarlier) et ses relations avec la tectonique du Jura
Authors: Chauve Pierre
Published: June 2020

Outcrops of marine and lacustrine Tertiary formations discovered in the Lavaux stream valley near Pontarlier, France, constitute evidence of two orogenic phases. The first took place in middle or upper Oligocene time and was followed by a marine invasion; the second occurred before deposition of upper Tortonian or Pontian sediments. These phases correspond well with those established for other parts of the Jura mountains, the first of which is considered due to vertical movements, the second to tangential movements.
Le milieu et le developpement des orbitolines (foraminiferes)
Authors: Rat Pierre
Published: June 2020

Study of orbitolines in many Cretaceous localities of northern Spain shows that these foraminifera flourished in very diverse marine environments, at shallow depths but beyond the turbulent littoral zone. Many variations may exist within a single species in a given deposit. Some species were more adept than others at agglutinating detritus available nearby. Large flat forms developed preferably on bottoms with abundant terrigenous material. Criteria for defining species should be found by comparing certain measurable characteristics.
L'utilite fonctionelle et le mode de croissance des epines chez les Spiriferidae (brachiopodes)
Authors: Vandercammen Antoine
Published: June 2020

Reports the results of morphogenetic studies of the microsculpture of the test during the development of individual spirifers and its importance in species identification.
Contribution a l'etude de l'ontogenie de quelques formes d'echinides fossiles (note preliminaire)
Authors: Devries Andre
Published: June 2020

Traces the ontogenetic development of some 15 species of fossil echinoids, giving the details of the various stages of growth.
Donnees concernant le developpement ontogenetique des pelmatozoaires du Paleozoique (echinodermes)
Authors: Regnell Gerhard
Published: June 2020

Data on the ontogenetic stages of Paleozoic pelmatozoan echinoderms are reviewed, and the relations between ontogeny and phylogeny are discussed.
Donnees nouvelles sur le faisceau salinois a l'ouest de Mouthier (Doubs)
Authors: Grandjacquet Claude
Published: June 2020

Three principal structural elements are recognized in the Salins tectonic unit in the area west of the Loue valley, between Bolandoz and the Mouthier depression in Doubs, France--the Ornans (a slightly dislocated foreland zone), an intermediate buffer zone, and the overthrust Levier section. Deep fracturing, dislocation accompanied by folding, overthrusting, and shearing, and post- tectonic readjustment were responsible for development of the structure.
Sur l'extension des "durbachites" et autres roches basifiees au sein des gneiss de Sainte-Marie-aux-Mines dans les Vosges (Haut-Rhin)
Authors: Eller Jean Paul von
Published: June 2020

So-called durbachites and related rocks within the Sainte-Marie-aux-Mines gneiss of the Vosges massif (Haut-Rhin, France) have been mapped. Their origin seems to be related to the nature of the original rock, their position relative to a nearby biotite-amphibole granite, and the proximity of a coarse two-mica granite at shallow depth. They are considered to have formed by desilication of leptynitic rocks and later feldspathization. Microsyenites which extend farther northward in the Urbeis gneiss at the margin of the amphibole granite represent magmatic counterparts of the durbachites.
Les sequences biolithologiques du Miocene inferieur du Bazadais
Authors: Caralp Michelle , Moyes J. , Vigneaux M.
Published: June 2020

A detailed lithologic and micro-paleontologic study of the Miocene deposits encountered in a series of borings in the Bazadais region, France, permits identification of two marine phases separated by a lacustrine phase.
Revision de la collection T. H. Ting d'Archaeocyatha conservee au Musee de Marburg (Allemagne)
Authors: Debrenne Francoise , Debrenne M.
Published: June 2020

The collection of archeocyathids from Australian localities, originally described by T. H. Ting in 1937, now in the Marburg museum (Germany), has been photographed in its entirety and many sections and polished surfaces have been made. The original descriptions have been supplemented by emendation of brief descriptions and creation of four new species.
L'interpretation petrographique des donnees geophysiques sur la structure de l'ecorce terrestre
Authors: Afanasev G. D.
Published: June 2020

The results of recent studies of elastic wave propagation within the earth are reviewed and different interpretations of the earth's interior which have been proposed, particularly in recent American works, are outlined. The results of these studies and of oceanographic work are incompatible with certain classic theories. The main facts are the differences between the continental and oceanic crust and the relatively recent (Tertiary and Quaternary) age of the great zones of continental subsidence, where a transformation from a continental to an oceanic-type crust is implied. The concept of permanent ocean basins is rejected. Differences between the continental and oceanic crust are considered essentially a function of physical state rather than petrographic composition. Continental zones that have subsided are characterized by greater seismic velocities because of the extra pressure to which they have been subjected in the course of the ages.
Role de la geologie appliquee aux grands travaux de genie civil
Authors: Castany Gilbert
Published: June 2020

The role of geology in the planning and execution of civil engineering projects is discussed.
Un tableau stratigraphique du Primaire sur le bord nord du bassin d'Aquitaine; identification du Gothlandien
Authors: Mathieu Gilbert
Published: June 2020

New paleontologic data permit refinement of the Paleozoic stratigraphic section of the northern margin of the Aquitaine basin, France, and identification of Gotlandian (Silurian) deposits. The latter are well represented in the Saumort gorge (Deux-Sevres). Data on the structure and metamorphism of the area are included, together with a comparison with the Central Massif.
Etude de Paroxyclaenus, mammifere des phosphorites du Quercy
Authors: Russell Donald E. , McKenna M. C.
Published: June 2020

Detailed study of the almost complete skull of the type specimen of Paroxyclaenus, P. lemuroides, from the Tertiary phosphate beds of the Quercy region, France, suggests that this genus belongs among the hyopsodontid Condylarthra.
Les formations liasiques des monts des Beni-Snassene (Maroc oriental)
Authors: Monition Lucien
Published: June 2020

A stratigraphic study is made of the Liassic units of the Beni-Snassene massif, between Moulouya to the west and the Algerian frontier to the east. The basal Liassic beds dip 20-22 degrees N on the southern flank. In general these beds have the same dip as the Permo-Triassic magnesian limestones in the lava flows below. The presence of coarse detrital units suggests the presence of shoals in the area at the beginning of the Liassic. These units may represent the Hettangian to the Carixian (Pliensbachian). The overlying limestone-dolomite series is considered lower Domerian because it underlies limestones containing an upper Domerian Emaciaticeras fauna. The Toarcian is well represented on both the northern and southern flanks of the massif. The lithology and fossil content are described from three localities where the Toarcian is exposed. Aalenian ammonites occur in the overlying series of marls and marly limestones previously attributed to the Toarcian.
Distribution verticale des oeufs d'oiseaux fossiles de l'Eocene de Basse-Provence
Authors: Dughi Raymond , Sirugue Francois
Published: June 2020

A new genus--Ornitholithus--is erected from bird eggs found in the Eocene of Provence, France. Five species are described within the genus. These species belong to two different stratigraphic levels--a narrow zone of Thanetian fluvio-lacustrine deposits containing O. biroi separated by a hiatus from the overlying upper Thanetian-upper Sparnacian fluvio-lacustrine beds with O. arcuatus, O. mammosus, O. mammillatus, and O. mammeatus. The structure of sauropsid egg shells is reviewed.
Contribution a l'etude geologique du Peloponese. Terminaison paleogeographique du haut-fond du Parnasse
Authors: Dercourt Jean
Published: June 2020

The Parnassus massif of central Greece, a haut-fond of neritic sedimentation in the Hellenic geosyncline, lies between the Pelagonian zone, an eugeanticlinal ride, on the northeast, and the Pinde zone, an eugeosynclinal sillon, on the southwest. The Parnassus massif ends on the southeast, in the Trapezona mountains of northern Argolis, against an ophiolite massif. The northwest end likewise terminates against a greenstone massif, and may continue under the greenstone to the Montenegro high karst haut-fond region of southwestern Yugoslavia.
Apercu geologique sur les collines de Boutenac (Aude)
Authors: Combes Alain
Published: June 2020

The Boutenac hills in the northeastern Corbieres region of southern France, are part of the autochthonous foreland of the eastern Corbieres nappe. They are an isolated massif between the Paleozoic formations of the Alaric mountain on the west, and the Jurassic and Cretaceous formations of the Fontfroide chain on the east, entirely surrounded by alluvium. Structurally, they comprise Mesozoic formations on the east thrust over the Eocene on the west, on a fault that is the prolongation of the Saint Chinian frontal fault to the northeast. The Mesozoic formations comprise upper (?) Triassic shale and dolomite, sandy limestone, dolomite, and limestone; Jurassic red sandstones and shales; and upper Cretaceous transgressive clastics. The Eocene is limestone and marl overlain by continental conglomerate and molasse, transgressive on the west upon the Alaric Paleozoics. Folding and thrust and normal faulting are important in the structure.
Donnees stratigraphiques et tectoniques nouvelles sur la Montagne de Tauch [with discussion]
Authors: Graciansky Pierre Charles de
Published: June 2020

Tauch mountain southeast of the Mouthoumet Paleozoic massif, France, is composed of Aptian and Cenomanian (Cretaceous) deposits and has generally been considered a remnant of the Mesozoic sedimentary cover which formerly capped the massif. The Cretaceous deposits of the mountain are folded, and the structure may represent a second-order thrust without an overturned flank. The mechanics of emplacement are discussed.
Les formations argilo-sableuses de la base du Cretace inferieur dans le Barrois occidental
Authors: Strehly Jean , de Bretizel P.
Published: June 2020

Study of the lithofacies and correlation of sandy and clayey deposits at the base of the lower Cretaceous of the western Barrois region, France, lead to the conclusion that the deposits represent a facies that is transitional between the two basal Cretaceous facies of the Paris basin, the Wealden and the marine Valanginian. The deposits occur between the eroded top of the upper Jurassic and the base of the Hauterivian, and are assigned a Valanginian age.
Sur un renversement vers le nord dans le Numidien de la region de Cesaro, Monts Nebrodi (Sicile septentrionale)
Authors: Duee G.
Published: June 2020

Although thrust movements affecting the sedimentary series of northeastern Sicily (Italy) were generally towards the south, a contrary movement occurred in the vicinity of Cesaro after the placement of the nappes. The Numidian beds are usually overlain by a varicolored clay formation but in the Serra di Vito it underlies the Numidian. The Serra di Vito is moreover bounded on the west and south by vertical faults and it is concluded that the displaced quartzites slid northward off the uplifted block.
Comparaison entre les formations eocenes des Madonies occidentales et des monts Nebrodi (Sicile)
Authors: Broquet Paul , Duee G.
Published: June 2020

The Eocene Caltavuturo formation of the western part of the Madonies massif in Sicily is composed of alternating marls and limestones with increasing clay and limestone near the top. Outliers of the formation string out across the front of the Monte Soro flysch of the Nebrodi mountains to the east and are unconformable on the underlying beds. An eastern extension of the sedimentary environment responsible for the Madonies facies is suggested by the outliers.
Exemple de gisements plombo-zinciferes epigenetiques dans des niveaux calcaires de sillon subsident; les mineralizations du Diois et des Baronnies
Authors: Rouvier Henri
Published: June 2020

The mineralization of Diois and Baronnies (France) is examined on the individual specimen, bed, and regional levels. The mineral composition consists essentially of zinc blende, galena and pyrite with some marcasite in a calcitic gangue. Study of galena and calcite samples indicates a low temperature of deposition. Three phases of mineral concentration are hypothesized; precipitation of water-dissolved metallic ions by hydrosulfuric acid; upper Eocene deposition of lead and zinc concentrations along faults by ground water; and upper Miocene to Recent superficial alteration of the beds.
Le Cretace et l'Eocene a facies telliens dans la zone du Kef Sidi Dris (Petite-Kabylie)
Authors: Magne J. , Raoult Jean Francois , Sigal Jacques
Published: June 2020

Tellian facies, Cretaceous-Eocene, limestones, marls, overturned sequence, Algeria
Caracteres tectoniques de l'Ordovicien de Saint-Sauveur-le-Vicomte (Manche)
Authors: Robardet Michel
Published: June 2020

Structural features, tangential deformation effects, sandstone, shale, northeast Armorican massif, France
Nouvelles donnees stratigraphiques sur la region de Bobbio (Apennin septentrional, Italie)
Authors: Labesse Bernard , Magne J.
Published: June 2020

The Bobbio region of the northern Apennines of Italy is one of the most significant examples of Apennine structure but the stratigraphy of the region has been poorly known. The Macigno sandstone exposed in a fenster in the Trebbia valley south of Bobbio contains an Oligocene microfauna. The Penice mountain series is Lutetian (middle Eocene). The Bobbio clays, resting upon the Macigno sandstone in the fenster, are Oligocene, but include interstratified beds of reworked Lutetian sediments.
Existence dans le sous-sol de Clermont-Ferrand (Puy-de-Dome) d'une fosse quaternaire recente
Authors: Rudel Aime
Published: June 2020

Cores drilled in the Jaude-Salins section of Clermont-Ferrand (central France) penetrated more than 30 meters of marsh sand, loam, and volcanic cinders without reaching the Oligocene substratum. The depression in which these sediments were deposited borders the Puys volcanic chain and is probably the result of recent Quaternary subsidence, a conclusion suggested by the position of the depression on the Clermont fault and its coincidence with a zone of hot springs.
Quelques resultats de l'etude du Quaternaire du Bas-Dauphine
Authors: Bravard Yves
Published: June 2020

Morphologic research in the Bas-Dauphine area (southeast France) produced no trace of pre-Mindel glaciation. Since no beveled surfaces were found in the extra-Rhodanian part of Bievre-Valloire, it can be concluded that the Isere river followed its present course even before the Mindel. Discovery of additional terrace deposits makes possible the extension of the Mindel terrace at Fouillouse into the Saint-Lattier region. The absence of eolian loams between Saint-Sauveur and Saint-Hilaire-du-Rozier indicates that the surface of the Rissian terrace was reworked during the Wuerm because of its position in front of the frontal Wuermian lobe. The effects of temporary streams emitted from the Wuermian glacier are recognized in the extensive kame terrace deposits.
Le genre Bunolistriodon Arambourg 1933
Authors: Arambourg Camille
Published: June 2020

The remains of a Burdigalian giant pig were found near Zelten (Libya). A skull, notable for the presence of conical superorbital protuberances and by the reduction of the anterior skull, confirms that it is of the genus Bunolistriodon. The precision of the features clearly distinguishes it from the zygolophodont genus Listriodon.
Le passage toarcien-aalenien et l'age des calcaires a Cancellophycus dans la region de Macon (Saone-et-Loire)
Authors: Elmi Serge , Mouterde R.
Published: June 2020

Lithologic studies and paleontologic studies of ammonites from a section between Vergisson and Davaye have provided more detailed information on the stratigraphy of the upper Toarcian and lower Aalenian in Macon (central France). The upper boundary of the Toarcian is marked by the Pleydellia buckmani bed recognized for the first time at the eastern border of the French Central Massif. The Tmetoceras scissum zone is recognized in the Aalenian. The Cancellophycus limestones represent the basal Ludwigia murchisonae zone (Costileioceras sinon bed) and the T. scissum zone. Two tables show proposed correlations between Macon, Mont d'Or, and the southern Jura mountains.
Donnees nouvelles sur l'age de l'apparition du facies flysch dans la zone de Gavrovo-Tripolitsa (massif du Klokova, Acarnanie, Grece)
Authors: Bizon G. , Dercourt Jean , Neumann M.
Published: June 2020

Between the upper Lutetian-lower Priabonian limestones with algae and nummulitids and the upper Eocene flysch is a transitional unit of alternating carbonate beds and thin marl layers containing pelagic foraminifera. The presence of Pellatispira madaraszi clearly indicates a Priabonian age for these beds. The lower marly beds of the overlying flysch contain planktonic foraminifera which suggest either an upper Eocene (Globorotalia turritilina zone) or lower Oligocene (Globorotalia oligocenica zone) age. Text-figures illustrate Globigerina cf. yeguaensis pseudovenezuelana, G. cf. tripartita tapuriensis, and G. gr. tripartita.
Note sur l'existence d'un paleodome dans la region de Burguete-Arive-Arrieta (Pyrenees basques espagnoles) et ses relations metallogeniques avec les mineralisations peripheriques
Authors: Chesterikoff Andre
Published: June 2020

Tetrahedrite, bornite, chalcopyrite, cinnabar, galena, sphalerite, celestite, and barite occur in fractured and faulted Triassic and Cretaceous formations on the flanks of the Oroz-Betelu anticline in northern Spain. The oldest formations exposed in the anticline are Devonian karstic limestone and clastics, intensely folded by the Hercynian orogeny and truncated by an erosion surface. Lower Triassic clastics rest upon the erosion surface, and are surrounded by a peripheral zone of upper Cretaceous limestone and dolomite outcrops. Late Cretaceous and Paleocene flysch, in turn, surround the older formations of the anticline. Cinnabar was deposited with quartz and chalcedony after copper mineralization, and does not occur in the tetrahedrite.
Recherches sur les modalites d'usure des debris organogenes calcaires
Authors: Berthois Leopold
Published: June 2020

A detailed study was made of the rate of rounding of organogenic debris from limestone in a small water mill. Various initial grain sizes were subjected to total wear of as much as 86 hours.
Structures plissees et successions granitiques dans les terrains metamorphiques des monts du Forez (Puy-de-Dome)
Authors: Boyer Claude
Published: June 2020

The Forez massif, between Limagne de Loire and Ambert, France, is surrounded by a biotite granite. Two different zones are distinguished. To the east is a complex region formed of gneiss and granite bands while to the west there is a two-mica granite with xenoliths of rock from the eastern sector. The western zone is faulted against the sedimentary series of the Ambert plain. The composition of the facies in the two zones ranges from metamorphic rocks and rocks derived from them, to rocks fitting the definition of true granites. The facies are the result of two phases of granitization influenced by the N-S isoclinal folds of the mountains east of Ambert overturned toward the interior of Forez.
La faune d'ostracodes de quelques gisements du Campanien superieur du bassin de Paris
Authors: Damotte Renee
Published: June 2020

Six upper Campanian (upper Cretaceous) localities in the Paris basin, France, have yielded an abundant ostracod fauna characteristic of the Belemnitella mucronata zone. The forms collected are benthonic, typical of carbonaceous chalk sedimentation in which species are numerous but individuals are few. The fauna is different from that of the lower Campanian and Montian limestones. Thirty-two species, 18 of which are illustrated, are listed in a table showing their distribution in the outcrops studied.
Preuves paleontologiques nouvelles de l'age tertiaire (Eocene superieur) des couches a troncs d'arbres silicifies du Tinr'ert occidental (Sahara central)
Authors: Lefranc Jean Philippe
Published: June 2020

A formation containing silicified tree trunks, previously considered as Cretaceous, Tertiary, and Quaternary by various authorities, can now be assigned with certainty to the upper Eocene. It contains the first occurrence of Euphorbioxylon reported in Africa north of the equator.