bluuebunny/crossref_metadata_2025 huggingface dataset:
Generalite des phenomenes periglaciaires wurmiens sur le littoral et les iles de la Charente-Maritime
Authors: Fridman Ruth
Published: June 2020

Most of the limestone outcrops of the coast and offshore islands of Charente-Maritime, France, show a solifluction zone at the top of the limestone, representing a periglacial Wuerm (Pleistocene) "head" formation, which is often festooned on the surface. This zone sometimes ends in a red soil and is frequently overlain by gravel flows. Locally these are all covered by ancient dune sands.
Observations paleomagnetiques en France; roches permiennes [with discussion]
Authors: Nairn A. E. M.
Published: June 2020

The geomagnetic pole positions for the Permian are calculated on the basis of measurements of the direction of magnetization of the Nideck porphyry from the Vosges region and red sandstones from other regions in France. The results agree with the pole calculated for the Exeter basalt of England, but differ by 40 degrees from those calculated from American measurements. Continental drift might be an explanation.
Les formations pliocenes des Alpes-Maritimes
Authors: Perriaux Jacques
Published: June 2020

A stratigraphic and petrographic study of the Pliocene formations of Alpes-Maritimes, France, suggests that so-called Astian yellow clays and sands represent neither an independent stage nor a facies of the Plaisancian. They are consolidated muds, like the Plaisancian blue clays, that have been altered; the position of the water table determines the boundary between the two clay types. The fauna indicates that the clays represent deposition in shallow, near-shore zones. Tectonic activity prior to the upper Pliocene explains the abrupt change in sedimentation from deposition of fine Plaisancian elements to formation of the upper Pliocene conglomerates of both marine and continental derivation. Folds in the clays and conglomerates are evidence of the continuation of Alpine orogenic movements up to the beginning of the Quaternary.
Un saurien helodermatide (Eurheloderma gallicum nov. gen. et sp.) dans la faune fossile des phosphorites du Quercy
Authors: Hoffstetter Robert
Published: June 2020

Describes a new helodermatid saurian, Eurheloderma gallicum n.g. n.sp., from the Tertiary phosphate deposits of the Quercy region, France. The age may be upper Eocene or, more likely, lower Oligocene.
Structure de la lisiere orientale du massif d'Escreins (zone brianconnaise, Hautes-Alpes)
Authors: Gidon Maurice
Published: June 2020

The Maurin "root" zone in the Escreins massif (Hautes-Alpes, France) has been traced northward to Ceillac, and two new Brianconnais units identified. The eastern border of the massif thus comprises four units--the lower Guil series, with Cretaceous beds transgressively overlying Triassic deposits; the transgressive Pic d'Assan series with Malm and, occasionally, Dogger (Jurassic) beds resting directly on black Triassic dolomites; the Clapiere series with Malm and Dogger strata resting on late Triassic dolomitic beds; and the Font Sancte series, with analogous, but more fully developed members. The Clapiere unit is interpreted as the interior portion of the Chatelet nappe that remained in a "root" position; the Pic d'Assan unit represents an analogous root portion of the Chambeyron nappe; the Font Sancte digitation is the true overthrust portion of the Chatelet nappe.
Morphoscopie des roches greseuses de la region des Biban (Constantine, Algerie)
Authors: Caire Andre , Cailleux A.
Published: June 2020

Study of the quartz grains from different sandstones of the Biban mountain region, Constantine, Algeria, permits inter-pretation of several details of the lower Cretaceous, late Nummulitic (mainly Oligocene), and Miocene paleogeography, which confirm previously published interpretations of the structural history of the region.
Cryoturbation et loess wurmien de l'aerogare d'Orly [with discussion]
Authors: Mazenot Georges , Cailleux A.
Published: June 2020

Excavations made during expansion of the Orly airport in Paris in 1957 exposed sections showing intense cryoturbation in Sannoisian (Oligocene) marly limestone and millstone at depths between two and eight meters. The overlying Wuerm loess contains a molluscan fauna with some fresh-water forms, indicating that it was deposited on a surface originally dotted with pools, marshes, or lagoons that later dried up. The upper surface of the loess is remarkably horizontal in contrast to the lower boundary.
Contribution a l'etude geologique du bassin hydromineral de Vals (Ardeche)
Authors: Destombes Jean Paul
Published: June 2020

The occurrence of mineral springs in the Vals region, France, is not related directly to Tertiary faults. The springs are all located in a mylonitic zone of the crystalline basement, cut by fissured ancient quartz veins which form the channels for the waters. Successive stages of reopening of these veins can be recognized, corresponding to different orogenic phases. One stage is related to recent basalt intrusions which follow an older northwestward structural trend.
Un profil tectonique d'ensemble de la Grece septentrionale moyenne
Authors: Aubouin Jean
Published: June 2020

All the Hellenic zones are represented in an east-west structure section across north central Greece (Epirus and Thessaly provinces), except the Vardar and Rhodope zones. The westernmost zones are autochthonous (pre-Apulian, Ionian, and Gavrovo zones). The para-autochthonous complex consists of two nappes, which were thrust westward but which maintained original relationships relative to the autochthonous complex and to each other.
Contribution a l'etude stratigraphique et sedimentologique de l'Aalenien en Haute-Marne
Authors: Megnien Francoise
Published: June 2020

The Aalenian (Jurassic) oolitic iron ore-bearing formation of Haute-Marne, France, is subdivided on the basis of a detailed paleontologic and sedimentologic study. Thirteen units are described in a section exposed at Maisoncelles. Thin sections of sediments from each horizon show that five principal microfacies can be distinguished--micaceous clay; oolitic iron ore with a calcareous marly gangue rich in shell fragments; oolitic iron ore with a more calcareous gangue and abundant quartz grains; sandy limestone, impregnated with hematite and rich in quartz; and detrital limestone rich in fossil fragments. Formation of the oolites is attributed to encrustation of the shell fragment or fragments forming the nucleus as the nucleus was rolled in the thin film of ferric gel on the bottom of the depositional basin. Associated hematite indicates an oxidizing shallow depositional environment.
Note sur la formation de structure cylindrique dans les gres
Authors: Berthois Leopold
Published: June 2020

Between October 1954 and November 1955, cylindrical structures were observed to develop in a sand bank built up in the Loire estuary, France. The structures appear to be analogous to cylindrical structures of Paleozoic and other consolidated rocks, and therefore suggest that organisms may have played a role in the formation of the fossil structures.
Etude petrographique de quelques calcaires senoniens de Charente et de Dordogne
Authors: Duplaix Solange , Dupuis J.
Published: June 2020

Petrographic study of siliceous inclusions in marine Senonian (Cretaceous) limestones of the Perigord region (Charente and Dordogne, France) shows that the Coniacian limestones are characterized by an abundance of well-sorted detrital quartz, the Campanian by an abundance of organic silica (sponge spicules), and the Maestrichtian by an abundance of secondary chalcedony.
L'Aptien de La Bedoule (Bouches-du- Rhone); stratigraphie et sedimentation
Authors: Blanc Jean J.
Published: June 2020

Detailed study of sections in the Bedoule region (Bouches-du-Rhone, France) shows that a large part of the Aptian (Cretaceous) sequence is characterized by rhythmic sedimentation (bluish clayey limestones-blue marls). The rhythms are symmetrically distributed in time, but in general show a progressive and continuous thinning of the limestone beds toward the top of the sequence. In the terminal stages considerable coarse clastic material was supplied to the depositional basin, and the cycle terminated with emergence (Albian).
Une nouvelle forme de polypier dans le Jurassique superieur de l'Yonne, Icaunhelia michelini nov. gen., nov. sp
Authors: Beauvais Louise
Published: June 2020

A Jurassic madrepore from the Yonne region, France, found in the Michelin collection, erroneously labeled Caryophyllia vasiformis, is described as Icaunhelia michelini n.g. n.sp. In forms belonging to this new genus, the calcium carbonate skeleton probably was secreted by a vast single syncytium representing the entire ectodermal surface.
Une grande faille NE-NW du sud du Bassin parisien
Authors: Stchepinsky Vladimir
Published: June 2020

Describes the western extension (Aube basin) of the major fault of the eastern Paris basin. The fault can now be recognized for a length of 135 km; it is convex toward the south, reflecting Variscan and Armorican trends connected by a slightly curved line. The Chalvraines fault, discovered a century ago by Royer and Barotte but omitted from later maps, branches southeastward from the major fracture 1.5 km east of Rimaucourt. In a supplementary note, by J. Laffaille, it is noted that the major fault is clearly expressed on a gravimetric map of the region by a band of steeper gravity gradient.
La faille de Merens dans les Pyrenees ariegeoises
Authors: Zwart Hendrick J.
Published: June 2020

The southern border fault (Merens fault) of the Aston massif in the Pyrenees of Ariege, France, corresponds to a southward thrusting of this massif over a zone of sedimentary formations attributed to the Canaveilles series (probably Cambrian). On the south, these sediments are in fault contact with the Hospitalet gneiss massif (Pinet fault); farther east, toward Merens, they form the cover of the Hospitalet massif.
Stratigraphie du Paleozoique de la zone axiale pyreneenne a l'E de l'Ariege
Authors: Cavet Pierre
Published: June 2020

The Paleozoic section in the axial zone of the Pyrenees east of the Ariege, France, consists, from the bottom upward, of the Canaveilles series of interbedded graphitic schists, limestones, and metavolcanics (attributed to the Cambrian), the more homogeneous Jujols schists (lower and middle Ordovician), dated Ashgillian and Gotlandian (Silurian) schists and fossiliferous limestones, grading upward into undifferentiated lower Devonian beds, gray massive middle Devonian limestones, diversified upper Devonian formations, and a zone of transgressive Dinantian (Carboniferous) beds which forms the transition to shaly Visean so-called Culm deposits.
Les temoins de la couverture posthercynienne de la zone axiale a l'E et au SE du Canigou
Authors: Auriol L. , Casteras Marcel
Published: June 2020

Evidence of the post-Hercynian cover of the axial zone of the Pyrenees is preserved east and southeast of the Canigou massif in the Amelie-les-Bains basin and in the small Cretaceous and Nummulitic basins of Coustouges and La Manere respectively. The stratigraphy and structure of the Amelie-les-Bains and Coustouges basins are described.
Le Paleozoique des Aspres orientales aux environs de Castelnou
Authors: Cavet Pierre
Published: June 2020

Reports Paleozoic outcrops and sections, mainly lower Paleozoic schists, observed near Castelnou along the route of the eastern Pyrenees field excursion of the Societe Geologique de France in September 1958.
Le Neogene de l'Ampurdan
Authors: Villalta Comella Jose F. de
Published: June 2020

Miocene and Pliocene sediments are represented in the upper Tertiary formations of the Ampurdan basin, northeast Spain. They constitute two distinct units, corresponding to different sedimentary cycles.
Stratigraphie du Trias du bassin de Paris
Authors: Ricour Jean
Published: June 2020

Information from deep wells in the Paris basin revealed the geographic extent of each member of the Triassic series. During Triassic time a deep gulf was created gradually on the site of the present basin. This gulf was bounded on the north by the Ardennes land mass, which was rising. The southern shore of the gulf lay north of the central Massif. The present center of the basin was a zone of subsidence.
L'accident de Seine
Authors: Dercourt Jean
Published: June 2020

The Seine dislocation is probably a flexure rather than a fault. Where directly observable at various localities in the Paris basin, it is always a flexure; it may pass into a fault as it crosses the Rouen and Vernon anticlines.
Le Miocene du bassin de Crest (Drome)
Authors: Demarcq Gerard
Published: June 2020

Defines the lateral and vertical variations of marine facies in the Burdigalian and Vindobonian formations of the Crest basin, France, and discusses their paleogeographic relations in terms of their significance for interpreting the Miocene history of the basin, which was a trough within the Rhone valley region.
Les formations cretacees du Zemmour Noir (Mauritanie septentrionale)
Authors: Sougy Jean
Published: June 2020

A detailed description of three sections in the horizontal Cretaceous cover capping folded Paleozoic rocks of the Zemmour Noir region in northern Mauritania; includes petrographic and granulometric data on rocks of the different facies and twelve chemical analyses. The formations are essentially clastic, progressively more highly silicified toward the top. The only identifiable fossil, Ampulina bulbiformis, and sponge spicules are evidence of definite marine invasions in the Turonian or lower Senonian.
Le carpe de Homoeosaurus, sphenodontide jurassique
Authors: Cocude-Michel Marguerite
Published: June 2020

The carpal bones of the Jurassic sphenodon Homoeosaurus pulchellus from the Munich collection have been studied. The carpal region of the rhynchocephalians has evolved very little since that time.
Description d'un Heterolepidotus de la Sarthe
Authors: Lemaire Francoise
Published: June 2020

Describes the head of the fossil fish Heterolepidotus recently found in France (in the Sarthe river region) where the genus was formerly unknown. Stratigraphically, it is younger (base of the Bathonian) than English specimens attributed to H. latus (lower Liassic). As the species of the genus are defined on the basis of body structure rather than the head, the French specimen cannot be identified positively, but it is probably H. latus.
Biohermes et biostromes a bryozoaires du Miocene d'Europe
Authors: Buge Emile , Calas P.
Published: June 2020

Summarizes the characteristics of bryozoan reefs (bioherms) and subreefs (biostromes) in Miocene localities of the Loire basin (France) and Bessarabia (USSR).
"Recifs" a rudistes
Authors: Dechaseaux Colette , Sornay J.
Published: June 2020

The conditions of formation of so-called rudistid reefs are studied by means of examples from France, Serbia, and Italian Somaliland. In Jurassic and lower Cretaceous time rudistids were merely associated with reef-forming corals; in the upper Cretaceous they were seldom associated with corals but usually formed independent populations whose individuals either constituted a bioherm or were more or less isolated. The term "rudistid beds" is preferable to "reefs" for their structures.
Les breches sedimentaires zinciferes du Sinemurien du Lot [with discussion]
Authors: Launey Philippe , Leenhardt R.
Published: June 2020

Near Figeac in Lot, France, sphalerite concentrations are associated with sedimentary breccias occurring locally in lower Sinemurian (Jurassic) deposits. The breccias are considered penecontemporaneous deposits formed as a result of slumping of submarine talus slopes. The plateau facies on the east is replaced westward by a basinal facies, indicating sliding of the slump material from east to west. The degree of mineralization is directly proportional to the extent of slumping.
Controle geologique des souterrains de la region ouest de la Societe nationale des chemins de fer; methodes et resultats
Authors: Feugueur Leon , Soyer R.
Published: June 2020

Twenty-six railroad tunnels in western France, most of them more than 100 years old, were carefully examined in order to study the relations between their geologic and topographic setting and such structural and erosional alterations as may have taken place since construction. Twenty-five of the tunnels are in Cretaceous formations. Effects of alteration, gravity, ground-water movement, fissuring, formation of concretions, frost action, and vibrations are sumarized, as a guide for future tunneling for highways and other purposes.
Gites de barytine des Corbieres (Aude)
Authors: Ovtracht Andre
Published: June 2020

A so-called barite province can be distinguished in the Mouthoumet massif of the Corbieres mountains, France. Traces and deposits of almost pure barite are abundant and always occur in middle Devonian deposits. Mineralization is pre-Permian and apparently slightly younger than other Hercynian mineral deposits of the massif. Some of the occurrences are being or could be exploited commercially.
Quelques donnees sur l'ontogenese des Tournayellidae (foraminiferes)
Authors: Lipina O. A.
Published: June 2020

The ontogeny of foraminifera belonging to the family Tournayellidae is worked out, using their stratigraphic distribution as a control
Remarques sur l'ontogenie du ligament et de la charniere de quelques especes de lamellibranches (Noetidae et Carditidae)
Authors: Freneix Suzanne
Published: June 2020

Describes ontogenetic details of the ligament and hinge of certain pelecypods belonging to the Noetidae and Carditidae. The report is based mainly on study of material from Lutetian (Tertiary) deposits of Senegal.
Disharmonies et decollements dans le Jurassique du faisceau salinois (Jura)
Authors: Caire Andre
Published: June 2020

Asymmetric structural features in the Salins-les-Bains region, France, indicate that the Liassic and middle Jurassic are tectonically independent. They are considered an effect of dislocation of the sedimentary cover which was contemporaneous with deformation of the basement structure.
Sur la geologie de la zone littorale du Montenegro; les bouches de Kotor (Yougoslavie); comparaison avec les series helleniques correspondantes
Authors: Aubouin Jean
Published: June 2020

The autochthonous zone of the Montenegro coast (Yugoslavia) is correlative with the Gavrovo zone of Greece, and the overthrust Cukali zone of Yugoslavia with the Pindus zone of Greece. The paleogeographic and structural consequences of this correlation are examined.
Evolution morphologique en basse Provence depuis le Miocene
Authors: Cornet Cecile
Published: June 2020

Since the end of the Cretaceous, lower Provence (France) has been a continental region. In the Miocene, the drainage was toward the north. Pontian and Plio-Quaternary crustal movements caused southward tilting of the Miocene surface and resulted in the present topography. The deep submarine canyons off the coast can be explained in terms of the post-Miocene flexuring.
Etude des depots flandriens de l'anse Duguesclin, pres de Cancale (Ille-et-Vilaine)
Authors: Bourcart Jacques , Boillot G.
Published: June 2020

The Flandrian (Pleistocene) stratigraphy and the intermittent character of the Flandrian transgression in the Cancale area (Ille-et-Vilaine, France) are established on the basis of information from a series of borings in a sand bar in the Duguesclin bay. The present topography is an exact reflection of the Flandrian topography; the sand bar and the marsh behind it have retreated inland, however.
Brachiopodes tertiaires d'Arabie et de Syrie
Authors: Elliott Graham F.
Published: June 2020

Describes three Tertiary brachiopods from the Middle East--Streptaria arabica n.sp. from the Eocene of Arabia, Argyrotheca zenobiae n.sp. from the Miocene of Syria, and Megerlia truncata from the Pliocene of Syria. Their distribution and affinities are briefly discussed.
Microfacies caracteristiques du Trias lorrain
Authors: Ricour Jean , de Mautort J.
Published: June 2020

Describes the microfacies of the various detrital, limestone-dolomite, and salt zones in the Triassic of Lorraine, eastern France. These facies are stratigraphically significant in view of the absence of faunal key horizons.
Observations sur le Primaire de la region de Bobo-Dioulasso (Haute-Volta)
Authors: Lajoinie Jean Pierre
Published: June 2020

A 400 meter-deep borehole through the Paleozoic section at Bobo-Dioulasso in the upper Volta region, western Africa, shows that the Bobo sandstones are thicker than heretofore mapped and that there is a schistose formation at least 70 meters thick in the upper part of the Sotuba sandstones, to which the schist belt northeast and southeast of Dedougou, originally mapped as the Toun schists, belongs. Other details of the stratigraphy are reported.
Introduction a la seance sur les Cordilleres betiques
Authors: Durand Delga Michel
Published: June 2020

Outlines the essential features of the Betic cordilleras, an extension of the Alpine system in Spain covering some 600 kilometers between the Atlantic and the Mediterranean basins, by way of an introduction to a symposium on the geology of the Spanish ranges. (The various papers presented at the symposium are cited under the separate authors; see Alloiteau 6, Astre 9, Azema 2, Busnardo 1, 2, Chauve 3, Didon 1, Dubar 1, Duplaix, S., Durand Delga 3, Escandell, B., Foucault 3, Garcia Rodrigo, B., and Linares, A.)
Sur la structure du nord de la province d'Alicante (Espagne)
Authors: Garcia Rodrigo Bernardo
Published: June 2020

The Betic ranges in the northern part of Alicante, Spain, are folded and faulted. As a whole, the structure of the region is characterized by general displacement of the post-Triassic cover, due to the plasticity of the upper Triassic. The mechanism could have been either simple gravity sliding accompanying tilting, or thrusting due to pressures exerted by advancing Subbetic units, or both. The numerous faults cutting the folded structures are related to dislocation of the cover; they were developed either during the displacement, which was to the north-northwest, or in the case of the normal faults, by subsequent decompression and expansion.
Apercu sur le Prebetique de la region de Jaen (Andalousie, Espagne)
Authors: Busnardo Robert
Published: June 2020

The Prebetic zone of the Jaen region, Spain, consists of three main units. The Castillo unit on the north consists of Vraconian? and Cenomanian (Cretaceous) limestones thrust over the Tertiary; next is the Pena de Jaen unit, consisting of similar but more fossiliferous and more neritic beds; the thick Jabalcuz-Los Villares series on the south (Liassic to Cenomanian) is thrust over the Pena de Jaen unit. Thus parautochthonous, subautochthonous, and autochthonous masses are all represented in the Prebetic zone. The concept Prebetic is becoming more purely structural than has been the case in the past; it is applied to all the sedimentary formations below or before the vast Subbetic overthrust.
Le Flysch gaditan au nord et au nord-est d'Algesiras (prov. de Cadix, Espagne)
Authors: Didon Jean
Published: June 2020

Several allochthonous units were discovered during geologic reconnaissance in 1958-59 north and northeast of Algeciras, Spain. At the base is the Estepona Flysch, comprising upper Oligocene and Miocene deposits. Above this are the Algeciras unit, consisting of upper Eocene and Oligocene Flysch deposits, and the Camarote unit, composed of Tithonian (Jurassic) and lower Cretaceous sandy marls. At the top are the Aljibe sandstone on the west (Oligocene) and the Argueelles unit on the east (upper Cretaceous to middle Oligocene limestones). Most of these units originated in Ultrabetic regions.
Introduction a la seance sur la geologie des Dinarides
Authors: Aubouin Jean , Brunn J. H.
Published: June 2020

Reviews present trends and results of research on the Dinaric Alps of Yugoslavia and Greece, by way of an introduction to a symposium on the geology of the range. The various papers presented at the symposium are cited under the separate authors; see Aubouin 4-6, Bornovas, Brunn 3, Celet, Ciric 1, 2, Dercourt 2, Mercier, Milovanovic, Neumann, M., Papastamatiou, Rollet 2.
Sur la presence du genre Preverina (foraminifere) dans l'Oligocene de Grece
Authors: Neumann Madeleine
Published: June 2020

Reports the discovery of foraminifera belonging to the genus Preverina in Oligocene deposits of Paxos island, Greece. Until now this genus has been known only from Italian localities.
Les zones helleniques internes et leur extension; reflexions sur l'orogenese alpine [with discussion]
Authors: Brunn Jan H.
Published: June 2020

The inner zones of the Dinaric Alps are particularly well expressed in the Hellenides. Following a description of the specific features of the different zones, beginning with the Macedonian sector where they are best known or most complete, their active role in orogenic mechanisms is discussed. A review of the whole Mediterranean sector of the Alpine system, from Arabia to the western Alps, shows the importance of longitudinal movements in the genesis of the system.
Classification et repartition verticale des pecopteridees dans le bassin houiller du nord de la France
Authors: Dalinval Andre
Published: June 2020

The history of the definition and classification of the genus Pecopteris is reviewed, and the vertical distribution of species in the Carboniferous coal basin of northern France is summarized. Data on the different types of trunk and their relations with the fruits are included.
Une plante-guide du Stephanien du bassin de Saint-Etienne; Odontopteris pseudoschlotheimi nov. sp
Authors: Maistre Jacques de
Published: June 2020

Describes a new species of Odontopteris--O. (Mixoneura) pseudoschlotheimi--from the upper Stephanian (Carboniferous) Avaise zone in the Saint-Etienne coal basin, France. It is similar to O. subcrenulata.
Les sauriens des calcaires lithographiques de Baviere, d'age portlandien inferieur
Authors: Cocude-Michel Marguerite
Published: June 2020

Describes three reptiles (Palaeolacerta bavariscus n.g. n.sp., Bavarisaurus macrodactylus, and Broilisaurus schroederi) from upper Jurassic lithographic limestones of Bavaria, Germany. They are lower Portlandian in age, and exhibit affinities with the living families Iguanidae, Gekkonidae, and Lacertidae.
Etude geologique des collines de Pichauris, pres Marseille (Bouches-du-Rhone)
Authors: Guieu Gerard
Published: June 2020

The Pichauris hills northeast of Marseilles, France, are formed principally of Triassic and Infraliassic formations resting on Suprajurassic beds, and are structurally independent of the Allauch massif and other surrounding units. They represent the prolongation of the Etoile fold, overthrust to the east. Since isolation at the end of the Jurassic, the hill zone has always tended to be emergent.
Flysch et molasse
Authors: Rech-Frollo Marguerite Marie
Published: June 2020

Petrographic and geologic observations on the Flysch deposits of the French and Swiss Alps, the Romanian Carpathians, the northern Apennines (Italy), and the French and Spanish Pyrenees show that there are two distinct groups of formations. The first group consists of true Flysch deposits, but deposits of the second group are comparable to marine molasse beds. The petrographic and geologic characteristics of the two types are compared in a table, and examples of each are given.
Etude d'un eboulement dans le bief a silex sous la voie ferree a Foucart-Alvimare (Seine-Maritime)
Authors: Feugueur Leon
Published: June 2020

Slumping along the Paris-Le Havre railway at Foucart-Alvimare (Seine-Maritime, France) was thought at first to be caused by sudden collapse of an underground quarry. Geologic investigation showed that it was due to gradual settling in the course of evolution of the "bief a silex" (a cherty residual clay) overlying the limestone and underlying the three-meter surface layer of plateau clays.
L'Ordovicien superieur et la serie paleozoique au nord du granite de Querigut (Pyrenees de l'Aude) [with discussion]
Authors: Cavet Pierre
Published: June 2020

The upper Ordovician is well developed north of the Querigut granite massif in the French Pyrenees. Conglomerates, "perforated" schists, and dacitic rocks constitute the most typical facies. Caradocian deposits are also present, and are granitized in places. Pre-Caradocian formations are difficult to distinguish from upper Paleozoic deposits, but are known to occur. Gotlandian (Silurian), Devonian, and Dinantian (Carboniferous) deposits are also represented in the region.
Lineations, schistosite et phases de plissement durant l'orogenese hercynienne dans les terrains anciens des Pyrenees orientales, leurs relations avec le metamorphisme et la granitisation [with discussion]
Authors: Guitard Gerard
Published: June 2020

Study of structural details in the metamorphic formations of the eastern Pyrenees shows that there were two phases of movement in the Hercynian orogeny (late Paleozoic). Movements of the earlier phase produced folds and lineations trending northeast-southwest, occasionally north-south, and coincided for the most part with general metamorphism and formation of the extensive augen gneiss or leptynitic massifs of the range. Recrystallization antedated the movements to some extent, however. The later phase caused microfolding of the schistosity in certain zones of movement and, in the Canigou massif, initiated migmatization and granitization that continued after movement ceased. In the Agly massif the structures were developed mainly in the last stage.
Etude de quelques oligoelements dans la serie liasique du Mont-d'Or lyonnais (Rhone)
Authors: Jamond Colette , Lapadu-Hargues P.
Published: June 2020

Study of trace elements (Pb, Sn, Ag, Cu, Ni, Cr) in members of the Liassic series of the Mont d'Or in the Central Massif of France indicates that the content depends more on conditions of sedimentation than on the chemical nature of the elements themselves. The genesis of a sedimentary mineral deposit therefore depends mainly on sedimentary conditions, rather than on the chemical character of the sediment as is the case with replacement deposits.
La microfaune de foraminiferes de quelques gisements classiques d'age burdigalien dans le Bordelais
Authors: Julius Charles
Published: June 2020

The foraminifera in the classic Burdigalian (Tertiary) deposits of the Saucats, Cestas, and Leognan localities in the Bordeaux region, France, are listed. A close relationship is indicated between the faunal assemblage and the sedimentary facies.
Presence du Miocene dans le "tunnel ferroviaire de Monaco", Alpes-Maritimes
Authors: Feugueur Leon , Le Calvez Y.
Published: June 2020

Tunneling operations in the Monaco railroad tunnel have permitted precise stratigraphic dating of Mio-Pliocene deposits of this part of the Mediterranean coast. Pliocene deposits directly overlie Miocene deposits in a boring at Roquebrune-Cap Martin (Alpes-Maritimes, France). At Roquebrune, Miocene conglomerates are overlain by Miocene Molasse deposits; at the tunnel entrance on the Ventimiglia side (Liguria, Italy), the Molasse is normally succeeded by Pliocene beds of a colder and deeper facies containing a rich planktonic foraminiferal fauna.
Sur le granite orbiculaire de Tisselliline (Hoggar, Sahara central)
Authors: Grolier Jacques
Published: June 2020

Orbicular granite outcrops in a small area near the northern edge of the Tisselliline granitic massif in the Ahaggar mountains (Algeria) in the central Sahara. Petrographic and chemical study leads to a double diffusion theory of its origin. Whereas orbicular rocks are generally found near a migmatite front, this particular example indicates that an orbicular facies can also be associated with small granite massifs, thus suggesting the possibility that a phase analogous to migmitization may be involved in the genesis of certain intrusive massifs of this type.
Gneiss, marbres, prasinites en coussins et polymetamorphisme dans la partie sud-occidentale du massif Dora-Maira (Alpes cottiennes piemontaises)
Authors: Michard Andre , Vialon P.
Published: June 2020

Igneous rocks of the Dora-Maira massif in the Po river headwater region in the Cottian Alps of Piedmont, Italy, are surrounded, and in many places surmounted, by gneiss, marble, and other associated metamorphic rocks of controversial age. The evidence is considered conclusive that the age of the rocks ranges from Permo-Carboniferous to Triassic. Criteria for discrimination of successive periods of metamorphism, including retrograde metamorphism, are reviewed. Carbonatized rocks and phengitic conglomeratic quartzite serve as "metamorphic thermometers" useful locally for discriminating successive periods of metamorphism. Cataclastic effects are also useful for determining time relationships, as are also optical peculiarities of quartz, feldspar, white mica, and biotite in various rocks. It is concluded that the region has been subjected to two major periods of metamorphism, and that the Alpine metamorphism in general was less intensive, and in certain aspects was retrograde compared with the pre-Alpine metamorphism.
Caracteres petrographiques et petrochimiques des roches eruptives grenues de la Font-des-Vaches (massif volcanique du Cantal)
Authors: Vatin-Perignon Nicole
Published: June 2020

Eruptive rocks of the Font-des-Vaches complex in the Pliocene trachyphonolite massif of the Cantal region, France, were described by Lacroix in 1907 as a dike of "essexite-gabbro" emplaced in older volcanic rocks and subsequently exposed by erosion. Although the Font-des-Vaches rock is exposed over only a small area, and contact with the surrounding trachyphonolite is obscured, detailed petrographic and chemical studies seem clearly to indicate a complete gradation from one into the other. It is concluded that the Font-des-Vaches rock is, from its more acidic nature, a pegmatitoid of the ankaratrite type, formed in the final stage of crystallization of residual magma following crystallization of the surrounding trachyphonolite.
Contribution a l'etude du Couvinien dans le bassin de Fort-de-Polignac (Sahara)
Authors: Chaumeau Jean , Legrand Philippe , Renaud Alzine
Published: June 2020

The contact of lower Devonian sandstone and shaly sandstone with middle Devonian shaly limestone is exposed at several points in the vicinity of Fort-de-Polignac in the Sahara. The lower Devonian beds show large lateral variations. Instead of the Givetian (upper middle Devonian) transgressing the lower Devonian, as previously supposed, the transgression began in the center of the basin in the Couvinian or Eifelian, i.e., lower middle Devonian, spread progressively eastward and westward, and did not reach the Oued Samene area until upper Couvinian. The submergence of the lower part of Tihemboka, west of In Akaouet, did not occur until Frasnian (lower upper Devonian).
Lyticoceras corroyi nov. sp. de l'Hauterivien nicois
Authors: Thomel Gerard
Published: June 2020

The lower Cretaceous of the vicinity of Nice in southeastern France is very thin, and has many stratigraphic breaks in the Valanginian and Aptian stages. Ammonites of the Hauterivian, Barremian, and Albian stages, on the other hand, are diversified and well represented. A new species of ammonite, Lyticoceras corroyi n. sp., was found in the Hauterivian of Rayet, near Falicon, Maritime Alps.
Les series primaires des Tassilis Oua-n-Ahaggar au sud du Hoggar entre l'Ar et l'Adrar des Iforas (Sahara meridional)
Authors: Lessard Lionel
Published: June 2020

The Paleozoic basin of Tassilis Oua-n-Ahaggar is shallow and cut by faults of great length and throw into horst-and-graben structure with general orientation northward. The Cambro-Ordovician formations are chiefly sandstone and conglomerate totalling more than 500 m. The Silurian is graptolite shales up to 300 m thick. The Devonian is principally sandstone and shale, with some limestone. The upper Devonian is transgressive. The lowermost Carboniferous is identical to upper Devonian, chiefly clastic but overlain by Carboniferous marine limestone rich in brachiopods. Dikes and sills of altered dolerite of Hercynian (?) age cut the pre-Devonian formations.
Etude d'une faune d'Inocerames du Senonien superieur des Charentes et description d'une espece nouvelle du Senonien de Madagascar
Authors: Sornay Jacques
Published: June 2020

A new species, Inoceramus (Haelienia) pseudoregularis, is described from the upper Campanian of Madagascar. Three additional Inoceramus species are described from the Campanian of Charentes, France. A lectotype is designated and described for Inoceramus regularis.
Etude petrographique et structurale du complexe volcanique de Saint-Thibery (Herault)
Authors: Capdevila Raymond
Published: June 2020

The middle Pleistocene volcanic complex between Bessan and Saint Thibery (France) is composed of basanite volcanic material. Three main formations are recognized: tuffs, cones, and flows. Petrographic analysis of the material shows that the basanite is slightly deficient in silica as indicated by the presence of leucite. The basanite contains phenocrysts, microlites, and xenoliths. Scorias were the first products emitted, dikes the last. Structural analysis of the flows is based on their internal and external characteristics which were affected by the mode of diffusion of the lava, the behavior of the gas, and the cooling. The frontal and lateral borders of the flows are marked by coarse breccias which distinguish the original limit of the flow from the erosional limit. The upper borders of the flows are eroded, the lower borders are marked by scoriaceous breccias.
Comparaison des series cambro-ordoviciennes reconnues en affleurement dans la region d'Amguid et en forage au centre du bassin saharien occidental
Authors: Legrand Philippe
Published: June 2020

Cambrian-Ordovician units in the central basin of the western Sahara are correlated with those of the eastern and western sections of the Amguid depression in Hoggar (Algeria). The El Moungar conglomerate, Djebel In Hedrane sandstone, and the lower Tassili sandstone are tentatively designated as lower Cambrian. The upper Tassili sandstone is Tremadocian, possibly lower Arenig at the top. The Iraouene sandstone represents the upper Arenig and Llanvirnian. The Felar-Felar complex is Gotlandian.
Description de Teutloporelles et de Gyroporelles dans le Ladinien du val Grana (Alpes cottiennes internes, Italie)
Authors: Michard Andre
Published: June 2020

Calcareous algae are described from the dolomites of the Cavoira valley: Teutloporella aequalis (Guembel) var. gracilis n. var., T. herculea (Stopp.) var. gracile?), Gyroporella n. sp. gr. ampleforata (Guembel), and Diplopora sp. This fauna shows great similarity to Austro-Alpine forms. The dolomites are considered as Ladinian--'Cuneese Triassic'.
Observations relatives au trajet du bois primaire dans la tige de Lyginopteris oldhamia Binney (Pteridospermees)
Authors: Louvel Christiane
Published: June 2020

The Coal Measures of Shore Littleborough, England, contain coal balls with well-preserved pteridosperm stems belonging to the genus Lyginopteris. Serial sections of the stem of L. oldhamia reveal the presence of the phenomenon of anastomosis between the vascular bundles of the primary wood.
Les faunes malacologiques lacustres et le probleme du synchronisme de l'Eocene inferieur des Corbieres et du bassin de Paris. Validite de l'etage 'sparnacien' dans les Corbieres
Authors: Plaziat Jean Claude
Published: June 2020

On the basis of a biometric study of lacustrine mollusk associations, the lower Eocene units of the Corbieres and Paris basins are reviewed. The boundary between the Thanetian and Sparnacian in the Corbieres basin should be placed a little below the base of the first marine bed of the Sparnacian. In the Corbieres basin two lacustrine faunas are superimposed: the first, Thanetian, includes the Vente-Farine marine deposits. It disappears with the advent of a new marine transgression containing a different fauna which precedes the second continental fauna equivalent to the Sparnacian Epernay beds of the Paris basin. This fauna validates Dollfuss's (1903) application of the Sparnacian stage in the Corbieres basin.
Paul Jodot (1879-1961)
Authors: Lecointre Georges
Published: June 2020

A biography of the French geologist Paul Jodot with a list of his publications dealing mainly with stratigraphy and paleontology.
Sur la position structurale et stratigraphique des 'gres de l'Embrunais', a l'ouest du col de Vars (Hautes-Alpes)
Authors: Kerckhove Claude
Published: June 2020

The Embrunais sandstone of the Crevoux peak massif, west of the Vars pass (France), is an internal, upper digitation of the Helminthoides flysch nappe of the Embrunais-Ubaye area. This digitation is characterized by its detrital facies which becomes more extensive and conglomeratic toward the northeast. The exotic sandy flysch outliers on the Brianconnais, near Briancon, are related to this digitation. West of the Vars pass the Crevoux massif overlies the basal black flysch. Southwest of the pass the black flysch has drifted over the rumpled Helminthoides flysch. The Crevoux massif therefore represents an allochthonous unit superimposed on the Saint Clement and Meyronnes folds. In this syncline the Embrunais sandstone develops progressively from south to north, emplacing itself in the basal Helminthoides flysch. Santonian-Coniacian Inoceramus species collected from the beds directly above the Embrunais sandstone date the unit as Senonian or possibly Turonian.
L'unite du Rio Guardal (prov. de Grenade, Espagne) et les liaisons entre prebetique et subbetique
Authors: Foucault Alain
Published: June 2020

The deep valley of the Guardal river in southeastern Spain exposes an unusual interlayering of typical Subbetic and Prebetic facies indicating a much closer relationship between the two zones of sedimentation in the region than previously assumed. The Subbetic beds are analogous to beds of the same age in the Malaga nappe, and probably are equivalent. Previous difficulties in explaining the stratigraphy and structure of the region are avoided by this interpretation, and the presence of Aptian (Cretaceous) flysch in the section is understood.
Sur quelques aspects de la zoneographie alpine dans les Alpes cottiennes meridionales
Authors: Michard Andre
Published: June 2020

A Permo-Carboniferous series and a polymetamorphic series are distinguished in the rocks of the southern Cottian Alps, Italy. The metamorphic mineral assemblages and facies of the principal rock types represented in each series and their zonal distribution are discussed. Alpine metamorphism is considered to have occurred after the tectonic activity responsible for superposition of the three structural units recognized in the region between Varaita and Stura.
Les sables et argiles bigarres du Coulon et ceux du Garry dans la region d'Apt (Vaucluse)[with discussion]
Authors: Clauzade Georges , Roch E , Tamisier A.
Published: June 2020

A Cretaceous (rather than Eocene) age is postulated for multicolored sands and clays of the Coulon and Garry areas in the Apt region, France. Conditions of deposition are considered to have been essentially continental, although in initial stages they may have been marine. Source materials were locally derived, as distinct from the contemporaneous bauxitic deposits of Provence, whose constituent materials were derived from the Central Massif and other distant sources.
Observations sur la tectonique des environs de Plaisians (Drome)
Authors: Grolier Jacques , Letourneur J.
Published: June 2020

A Barremian (Cretaceous) landslide mass now forming a butte, an intraformational truncated zone of Barremian limestones, and other tectonic elements of the Plaisians region, France, are discussed with reference to the mechanism of processes responsible for their present structural position.
Successions caracteristiques et niveaux reperes dans le Paleozoique de la region de Carcassonne a Saint-Pons (Montagne-Noire, Aude, Herault)
Authors: Boyer Francois
Published: June 2020

The lower Cambrian deposits of the Carcassonne-Saint-Pons region, France, are characterized by similar sequences of lithologic units at widely spaced localities and by lithofacies marker horizons which are persistent over wide areas. Lithofacies analyses of other parts of the Paleozoic section in the region lead to the conclusion that the region constitutes a homogeneous tectonic unit.
Sur les "gres rouges" du Cretace moyen de Dieulefit et des regions voisines (Drome)
Authors: Porthault Bernard
Published: June 2020

Red sandstones in the zone between flint-bearing limestones generally attributed to the Turonian and paleontologically dated upper Cenomanian (Cretaceous) deposits of the Dieulefit region, France, are dated as lower Turonian (Saumurian) and lower middle Turonian (lower Angoumian), mainly on the basis of the Globotruncana microfauna. A stratigraphic gap occurs between the upper Cenomanian and the base of the red sandstone, which reflects the effects of pre-Senonian orogenic activity.
Le Nummulitique du Devoluy (Hautes-Alpes); relations avec les regions voisines
Authors: Dubois Roland
Published: June 2020

The Nummulitic deposits of the Devoluy massif in the French Alps have generally been assigned to the Oligocene. Microfaunas show that the basal deposits in the sequence are upper Lutetian-Priabonian (Eocene). The stratigraphic and structural implications of the age assignment are discussed.
Evolution de la fosse mio-pliocene de l'Apennin apulo-campanien (Italie meridionale)
Authors: Jacobacci Alfredo
Published: June 2020

The description and schematic representation of the evolution of two rift valleys in the region between the Taburno mountain, west of Benevento, and Gargano to the east, based on surface studies and the results of deep drilling in Foggia, is aimed at the resolution of problems relating to the structural interpretation of relationships between Miocene and Pliocene sediments of southern Italy. The great variation in thickness and facies of sedimentary beds of equivalent age is noted, and the evidence of reworked sediments within the basin is considered.
Quelques ammonites nouvelles du Cretace superieur d'Angola
Authors: Basse de Menorval Eliane
Published: June 2020

A small new fauna of ammonites, Ledoceras massoni n. gen. n. sp., Prionocyclus, Subprionocyclus, Diplomoceras, from the center of the Cuanza basin of Cape Ledo, Angola, is described. Inocerames from the same fauna are too fragmentary to be described and named. The ammonites are assigned to the end of the Turonian or the beginning of the Coniacian. The addendum compares Ledoceras massoni n. sp. and Barroisiceras minimum.
Sur l'Ordovicien superieur du synclinal de Sees (Orne)
Authors: Pillet Jean , Robardet Michel
Published: June 2020

The discovery of new outcrops in the Ordovician of the Sees syncline (Orne) has disclosed the existence of a fossiliferous horizon. Among the trilobites collected is a new form of Phacopidellinae: Denckmannites praecursor n. sp. In addition, the stratigraphic study shows that the shale series above the horizon with Plaesiacomia brevicaudata and D. praecursor corresponds to the 'Grand May' sandy facies in the Ordovician of Calvados.
Gres a ciment calcaire et conglomerats quaternaires des alluvions anciennes de la Marne et de la Seine en amont de Paris
Authors: Michel Jean Pierre
Published: June 2020

Sandstones and conglomerates, both with calcareous cement, represent consolidated alluvium of the Marne and Seine rivers. The consolidated layers are considered to have resulted from the lateral circulation of CaCO 3 -rich phreatic waters in a periglacial climate of the Quaternary.
Introduction a l'etude des terrains permo-houillers du detroit de Rodez
Authors: Cariou Leon , Fuchs Yves , Scemama Charles
Published: June 2020

Carboniferous-Permian (Stephanian-Saxonian) stratigraphy and paleogeography, structurally controlled lacustrine depositional environment, transgressive marine sediments, shallow-water fluvial deposits, France
Rene Perrin (1893-1966)
Authors: Roubault Marcel
Published: June 2020

French geologist-metallurgist, list of publications
Observations sur la laterite recente des environs de Dakar (Republique du Senegal)
Authors: Tessier Fernand , Lappartient Jacqueline
Published: June 2020

Quaternary volcanic substratum, erosional surfaces within lateritic series, geomorphogeny, paleoclimatology
Les zones de rudistes du Cenomanien provencal
Authors: Philip Jean
Published: June 2020

Three monotaxonic faunal zones, evolutionary trends from Urgonian lower Cretaceous, upper Cretaceous, France