bluuebunny/crossref_metadata_2025_split huggingface dataset:
Signification paleogeographique des griottes devoniennes de la France meridionale
Authors: Ovtracht Andre , Fournie L.  
Published: June 2020

Abstract
The term "griottes" has been used loosely to describe carbonate rocks from the uppermost Devonian of the Pyrenees of southern France. Three types are distinguished among the Famennian griottes of the central Pyrenees, the Corbieres range, and the Montagne Noire--intraformational conglomerates, rocks with alternating limestone and shale layers showing evidence of submarine slumping during deposition, and more or less massive limestones. All gradations exist between these three main types. The griottes are variable in space as well as time. They are interpreted as representing deposition in a marine environment in which there was a tendency toward emergence, accompanied by minor slumping and local development of rocky reefs. In any case, they are not deep-sea deposits, as previously held.
Les ecailles de base de la nappe du flysch de l'Embrunais dans le bassin d'Embrun (Hautes-Alpes)
Authors: Debelmas Jacques , Latreille M. 
Published: June 2020

Abstract
Describes the Chateauroux and Chateau-Caleyere tectonic slices, Subbrianconnais in facies, and the Saint-Sauveur slice, Ultradauphinois in facies, at the base of the Flysch complex of the Embrunais nappe in the Embrun basin, Hautes-Alpes, France. In the Saint-Sauveur slice two unconformities are present, one of which is pre-Senonian (Mesozoic), the other pre-Nummulitic.
L'argile grumeleuse sur le loess, aux pentes des coteaux de rive gauche de l'Hers
Authors: Astre Gaston 
Published: June 2020

Abstract
A widely developed lumpy clay zone found on the slopes of the left bank of the Hers river and elsewhere in the Toulouse region, France, forms a distinct unit among the Quaternary formations of the region. It consists of material weathered from Oligocene marls, which has flowed and slumped on the loess which it overlies.
Sur la genese des gites de fer du massif du Mouthoumet (Aude) (a propos d'hypotheses recentes)
Authors: Guitard Gerard , Pelissonnier H. 
Published: June 2020

Abstract
The siderite deposits of the Mouthoumet massif, Aude, France, are of metasomatic origin, like those of the Canigou district. Karstification during Tournaisian (Carboniferous) time occurred after mineralization, and therefore could not have been responsible for it.
Sur l'origine exogene des gites de fer et de manganese du massif du Mouthoumet (Aude)
Authors: Jaeger Jean Louis , Ovtracht A. , Routhier P. 
Published: June 2020

Abstract
Defends the conclusion that the iron and manganese deposits of the Mouthoumet massif, Aude, France, are of exogenic (rather than metasomatic) origin, noting in particular various stratigraphic, paleogeographic, and structural features of the massif which are of significance for an understanding of the genesis of the ores.
Trois exemples de reconnaissance hydrogeologique d'alluvions dans le departement du Jura
Authors: Reussner Alain , Caire Andre , Glangeaud Louis , Goguel Jean , Guillaume Marcel , Mautort Jacques de , Munck Fernand , Perrenoud Marie Jeanne , Ricour Jean , Stanudin Boris 
Published: June 2020

Abstract
Describes three ground-water surveys of alluvial zones in the department of Jura, France, which gave different results. At Orgelet and Clairvaux, the results of electric resistivity surveys (positive in the first case, negative in the second) were confirmed by drilling. At Tavaux, however, the geophysical results were not in complete agreement with the geologic data, largely because of complexities in the relations between resistant and conducting layers.
Presence de Tetralophodon longirostris dans le Vindobonien inferieur de Tunisie
Authors: Bergounioux Frederic Marie , Crouzel F. 
Published: June 2020

Abstract
Describes remains of the mastodon Tetralophodon longirostris from lower Vindobonian (Miocene) localities of Tunisia, and summarizes data on the distribution and migration of the species throughout Europe and of members of the genus throughout the world.
Contribution a l'etude des flores jurassiques d'Asie; II, Sur des coniferes nouveaux d'Arabie seoudite
Authors: Boureau Edouard 
Published: June 2020

Abstract
Describes two new conifers recovered from Liassic beds encountered in a deep boring at Riyadh, Saudi Arabia--Brachyphyllum karpoffii and B. multistemonium.
Les Estheria de la region d'Agades (Niger)
Authors: Defretin Simone , Joulia F. , de Lapparent A. F. 
Published: June 2020

Abstract
Describes two new species of Estheria from lower Cretaceous localities southwest of Agades, Niger, French West Africa. The enclosing continental lake deposits were probably formed under climatic conditions similar to those of the present, with alternating very wet and dry seasons.
Quelques applications des biofacies a l'etude stratigraphique et paleogeographique du bassin neogene du Bas-Chelif (Algerie occidentale)
Authors: Tempere Claude 
Published: June 2020

Abstract
The principal biofacies--continental, brackish, littoral, epineritic, infraneritic,and benthonic--are reviewed and applied to the formations of the late Tertiary basin in the lower Cheliff river region, western Algeria. Comparisons are made with Lowman's reference profile in the Gulf of Mexico. It is concluded that the isopach map reflects faithfully, although not necessarily quantitatively, the deformations which affected the bottom of the depositional basin.
Sur deux especes d'annelides tubicoles du Devonien armoricain
Authors: Pillet Jean 
Published: June 2020

Abstract
Describes two new species of tubicolous annelids from Devonian localities of the Armorican massif, France--Conchicolites devoniensis from Emsian deposits and Cornulites? andegavensis from upper Siegenian deposits. The genera Cornulites, Conchicolites, Cornulitella, and Kolihaia are reviewed.
Nouvelles observations sur un poudingue intercale dans la couche de fer silurien d'Halouze (Orne)
Authors: Courty Georges 
Published: June 2020

Abstract
In parts of the Halouze mine (Orne, France) the iron ore occurs as conglomeratic masses consisting of quartzose, dolomitic, or phosphatic pebbles cemented by red iron oxide. The pebbles are not much older than the ore and were deposited between episodes of iron deposition. The iron oxide was precipitated in a well-aerated, shallow, quiet Silurian sea. Siderite tends to replace the quartz pebbles.
Decouverte de Spirifer gwinneri Frech dans le Dinantien du Sahara occidental
Authors: Delepine Gaston G. 
Published: June 2020

Abstract
Describes several specimens of Spirifer gwinneri from Dinantian (Carboniferous) deposits of the Reggan region (Algeria) in the western Sahara, 2,000 kilometers west of the only locality from which it has previously been known. The accompanying fauna indicates that the age is definitely Visean.
Reanimation de magmas et interpretation de quelques particularites de leurs elements de premiere consolidation
Authors: Barrabe Louis , Deicha G. 
Published: June 2020

Abstract
Experimental melting of glassy residues entrapped in the quartz of volcanic rocks furnishes data of petrogenetic interest, on the one hand relating to the manner of formation of these inclusions and their eventual thermometric use, on the other, to their mechanical effect on the host crystals.
Sur le granite de Mont-Louis (Pyrenees-Orientales)
Authors: Autran Albert , Guitard G. 
Published: June 2020

Abstract
The granite of the Mont-Louis massif in the French Pyrenees is a supercrustal rock without deep roots, located between augen gneisses occupying the center of the eastern part of the massif and the Paleozoic cover. Its upper part is homogeneous; the lower part, heterogeneous and diffuse, has granitized the augen gneiss. The two phases of the petrochemical evolution of the granite involved the introduction of Si and Na and loss of Fe, Mg, Ti, and K followed by microclinization. In structure and petrochemical evolution, the Mont-Louis massif is analogous to the Querigut granite. This type of superficial granitization is related to intense granitization taking place at depth; both are lumped under the term "regional granitization". The superficial granitization produces relatively homogeneous bodies, whereas at depth formation of more varied granites closely associated with migmatites takes place.
Sur quelques lamellibranches du Devonien et du Carbonifere du bord nord du bassin de Tindouf et du Tafilelt
Authors: Freneix Suzanne 
Published: June 2020

Abstract
Describes pelecypods collected from Devonian and Carboniferous localities in the northern part of the Tindouf basin, western Algeria, and from the Tafilelt region, southern Morocco. Two are new species, Palaeoneilo jacquemonti and Posidoniella? ovalis.
Decouverte d'une discordance dans le "Cambro-Ordovicien" du Soudan occidental (A.O.F.)
Authors: Dars Rene 
Published: June 2020

Abstract
The Cambro-Ordovician formations of the western Sudan region, French West Africa, consist of a lower schist-limestone marine series, a glauconitic marine series, and an upper sandy continental series. An unconformity, marked by the presence of a basal conglomerate, has been recognized at the base of the upper series; another may be present between the two lower series.
Generalite des phenomenes periglaciaires wurmiens sur le littoral et les iles de la Charente-Maritime
Authors: Fridman Ruth 
Published: June 2020

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.
Stratigraphie du Trias du bassin de Paris
Authors: Ricour Jean 
Published: June 2020

Abstract
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.
Le Miocene du bassin de Crest (Drome)
Authors: Demarcq Gerard 
Published: June 2020

Abstract
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

Abstract
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.
Description d'un Heterolepidotus de la Sarthe
Authors: Lemaire Francoise 
Published: June 2020

Abstract
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.
"Recifs" a rudistes
Authors: Dechaseaux Colette , Sornay J. 
Published: June 2020

Abstract
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

Abstract
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.