bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sur la presence de spirocyclines dans le Portlandien du bassin de Paris
Authors: Aurouze Germaine , Jacques Bizon Jean 
Published: March 2020

Abstract
Foraminifers belonging to the genus Spirocyclina, probably S. infravalenginensis, were encountered in the course of drilling in the Paris basin, France. The accompanying macrofauna and ostracods indicate a Portlandian (Jurassic) age for the enclosing beds.
Etude hydrogeologique de quelques plaines de la Turquie
Authors: Fournier Hugo G. 
Published: March 2020

Abstract
Describes the geology and ground-water possibilities of four alluvial plain areas in Turkey, two of which are located along the Syrian border, the other two on the Anatolian plateau. The plain areas of the Syrian border region are composed of Cretaceous and Tertiary marine sediments capped by Quaternary alluvium and, in places, volcanic flows. Water-bearing sequences of alternating permeable limestones and impermeable marls may be present. The ground-water possibilities of the plateau plains, composed of Tertiary lacustrine and volcanic beds capped by Quaternary alluvium and lava, are less favorable.
La geologie de l'Himalaya de l'Arun
Authors: Bordet Pierre , Latreille M. 
Published: March 2020

Abstract
Presents stratigraphic and structural details of the Arun valley in the Himalayan range (eastern Nepal) as a supplement to data in previously published papers. The formations of the Ganges plain are probably Quaternary; the Dharan series is comparable to the middle Siwalik beds, dated as lower Miocene; the Sangouri series is Permo-Triassic; the sedimentary cover of the lower zone includes Cambrian to Carboniferous strata, and the underlying migmatites are then Precambrian; in the high peaks, the Everest series probably represents the base of the Paleozoic, and the underlying Barun gneiss is therefore probably Precambrian. Structures include an east-west system of faults and transverse north-south folds. Rapid uplift is actually taking place along the south border of the range.
Les clypeines (algues siphonees verticillees) des monts des Oulad-Nail, Atlas saharien, Algerie
Authors: Emberger Jacques 
Published: March 2020

Abstract
Describes the occurrence of the alga Clypeina in Jurassic and Neocomian (Cretaceous) deposits of the Oulad-Nail mountains in the Saharan Atlas, Algeria, and the distribution of the species C. jurassica. Among the Valanginian species, two are new: C. lucasi and C. marteli.
Sur la classification du Miocene superieur continental de la vallee du Rhone
Authors: Jodot Paul 
Published: March 2020

Abstract
The three substages--the Sarmatian, the Meotic, and the Pontian proper--have not yet been differentiated in the upper Miocene continental deposits of the Rhone valley, France. On the basis of continental mollusks and mammals from the synclinal section of Cucuron (Vaucluse), three superposed faunas can be distinguished, which appear to be related to the three substages.
Etude des roches argileuses de quelques bassins houillers de la bordure occidentale du Massif Central
Authors: Kulbicki Georges , Vetter P. 
Published: March 2020

Abstract
Rather regular and constant argillaceous zones in Carboniferous formations of the coal basins at the western margin of the Central Massif, France, are of two principal types, those rich in micaceous clays (illite-montmorillonite) and those composed mainly of kaolinite. Both contain variable amounts of vermicular kaolinite (leverrierite) formed before consolidation by kaolinization of detrital mica particles in an acid milieu.
Le recif miocene du Languedoc
Authors: Chevalier Jean Pierre 
Published: March 2020

Abstract
The Miocene reef of the Languedoc region, France, originated at the edge of the Vindobonian shore following a change from marly to essentially limestone deposition. At present only scattered remnants remain. The fringing nature of the reef is shown by its passage westward into beach conglomerates or brackish and even lacustrine formations.
Essai de coupe du Tell algerois
Authors: Mattauer Maurice 
Published: March 2020

Abstract
Detailed field and micropaleontologic investigations of outcrops along a north-south section across the Tell region, Algeria, from the eastern Ouarsenis massif through the Cheliff basin to the Miliana massif, show that the zone of complex structures is overthrust relative to the zone in which Cretaceous and overlying Miocene formations have been subjected to broad folding and in which Triassic diapirs are absent.
Aspects geotectoniques possibles de l'equilibre isostatique
Authors: Deicha Georges A. 
Published: March 2020

Abstract
Schemes illustrating the principal of isostasy usually neglect the problem of stability of equilibrium within individual crustal blocks. Block diagrams have the advantage of suggesting experimental verifications and calculations. Readjustments within blocks--such as those resulting from an oblique major fault--would cause relative changes of level within a floating block of uniform density. This complementary aspect of isostasy should be taken into account in geotectonic theories.
Sur un bilobite nouveau du Gothlandien de l'Ennedi (Tchad, A.E.F.), Cruziana ancora
Authors: Lessertisseur Jacques 
Published: March 2020

Abstract
Describes a new bifurcate bilobite form, Cruziana ancora, from the Gotlandian (Silurian) of the Ennedi massif, French Equatorial Africa, which is interpreted as an internal mold of the beginning of a tunnel excavated by a trilobite.
Nouvelles observations sur le "Cambro-Ordovicien" du Zemmour (Sahara occidental)
Authors: Sougy Jean 
Published: March 2020

Abstract
In the Zemmour region (northern Mauritania, French West Africa) of the western Sahara, beds assigned to the Cambro-Ordovician are apparently transgressive toward the north-northeast, for dolomitic limestones are found only in the south and west. Observations in the Oumat el Ham massif show that there are two distinct series in the sequence, the marine Oumat el Ham series, overlain discordantly by the continental Garat el Hammoueid series. A conglomerate containing pebbles of the uppermost beds of the Oumat el Ham usually marks the disconformity.
Les ecailles de Saint-Clement (Hautes-Alpes)
Authors: Debelmas Jacques 
Published: March 2020

Abstract
Strata younger than Oxfordian (Jurassic) have been identified in the autochthonous basement of the thrust slices of the Saint-Clement region, Hautes-Alpes, France, and an Ultradauphinois slice thrust over Subbrianconnais slices has been discovered in the basal complex of the Embrunais nappe. The resulting anomalous structure is found to be reflected in the Saint-Sauveur slices, which constitute the continuation of the Saint-Clement sequence, but are simpler in structure.
Donnees et hypotheses relatives aux nappes du Tell algerien
Authors: Caire Andre 
Published: March 2020

Abstract
The structure of the Tell ranges of Algeria can be explained by various tectonic schemes based on the observed facts. It is known that Glangeaud's zone I was subjected to slicing in the Nummulitic and uplift in the lower Miocene; these processes undoubtedly contributed toward formation of nappe C and at least part of nappe B. Sliding of the nappes probably took place along a surface produced by pre-Miocene planation.
Observations stratigraphiques et malacologiques sur les bassins lacustres de Saint-Alban-sur-Limagnole (Lozere) et de Massiac (Cantal)
Authors: Jodot Paul , Rey R. 
Published: March 2020

Abstract
The Tertiary history of the Saint-Alban-sur-Limagnole and Massiac basins (in Lozere and Cantal, France, respectively) is worked out from a study of the stratigraphic relationships and gastropod faunas of the fossiliferous lacustrine deposits. Descriptions of some of the gastropods (including one new species) are given.
Observations sur les flyschs des Alpes maritimes francaises et italiennes; sedimentologie, variations de facies
Authors: Kuenen Philip H. 
Published: March 2020

Abstract
In the Maritime Alps of France and Italy, there are Flysch complexes whose facies are similar but whose ages differ, as well as Flysch complexes of contrasting composition. The sedimentational features and facies of two of these complexes were studied with a view to interpreting depositional conditions. The constituents of the autochthonous Oligocene Annot sandstone complex came from the south. Measurements of current direction indicate that the sandstones of the overthrust helminthoid-bearing Flysch complex (upper middle Cretaceous) came from the southwest, locally from the westnorthwest. In neither case was the Argentera-Mercanton massif the source of the sands, although it may have supplied small amounts to the Annot sandstone.
Un nouvel ordre d'arthropodes particuliers, Kazacharthra, du Lias des monts Ketmen (Kazakhstan SE, U.R.S.S.)
Authors: Novozhilov Nestor 
Published: March 2020

Abstract
Describes arthropods (including new genera and species) belonging to the new order Kazacharthra from Liassic deposits of the Ketmen mountains in southeastern Kazakhstan, USSR.
Presence d'un fosse de subsidence dans le prolongement argonnais de la double faille de la Marne
Authors: Clin Michel , Marie P. 
Published: March 2020

Abstract
Geologic information obtained from a well drilled for water midway between Clermont-en-Argonne and Les Islettes, France, and surface observations indicate that the region is a subsidence trough structurally related to the Marne double fault to the south.
Differenciation calcite-dolomite et anhydrite-gypse par colorations selectives sur echantillons macroscopiques
Authors: Megnien Claude 
Published: March 2020

Abstract
Describes a new modification of the copper nitrate method of distinguishing between calcite and dolomite macroscopically, in which greater color contrast is achieved by immersing the sample in an oxygenated solution. Anhydrite and gypsum can be distinguished by heating the sample above 102 degrees C, which transforms the gypsum into lustrous white CaSO &lt;sub&gt;4&lt;/sub&gt; .1/2H &lt;sub&gt;2&lt;/sub&gt; O.
Granites eutectiques ou metamorphiques? Discussion d'etudes recentes
Authors: Perrin Rene 
Published: March 2020

Abstract
Discusses recent works bearing on the question of the origin of granite. Bowen and Schairer conclude that crystallization of natural magmas ends with a eutectic liquid of granitic composition, and Tuttle and Chayes claim that the composition of natural granites is close to this eutectic. These conclusions are considered parts of a syllogism with no basis in reality. The origin of granites can only be explained in terms of metamorphic transformation.
Palaeomillepora liasica nov.gen. nov.sp., hydrozoaire nouveau du Lias de Vendee
Authors: Gabilly Jean , Lafuste J. 
Published: March 2020

Abstract
Describes a Liassic sponge, Palaeomillepora liasica n.g. n.sp., from the Vendee region, France, considered probably ancestral to the Milleporidae. It was found in association with numerous mollusks and corals in beds exhibiting a littoral detrital facies.
Discordance angulaire du Rhetien sur le Trias dans le massif de Peyre-Haute au S de Briancon; importance de l'erosion ante-rhetienne dans la zone brianconnaise
Authors: Debelmas Jacques , Lemoine M. 
Published: March 2020

Abstract
Fossiliferous Rhaetic beds overlie dolomitic Triassic deposits with angular unconformity in the Peyre-Haute massif, France. Less important pre-Dogger and pre-Malm erosional unconformities are also present in the Mesozoic sequence. The erosion at the end of the Triassic, corresponding in time to the reversal of subsidence resulting in the origin of the Brianconnais geanticline, appears to have been a major factor in the paleogeographic and tectonic history of the Brianconnais zone.
Revision des cirripedes acrothoraciques fossiles
Authors: Codez Jean , de Saint-Seine R. 
Published: March 2020

Abstract
A biometric and systematic study of acrothoracic cirripeds from Jurassic to Tertiary localities leads to a revision of the group. The new genera Simonizapfes (Liassic and Jurassic) and Brachyzapfes (Cretaceous) are erected. Together with Zapfella pattei, from which they are separated, they constitute the family Zapfellidae. The distinctions between this family and the Rogerellidae are tabulated. The stratigraphic range of each genus and probable environmental conditions are outlined.
Goupillaudina, nouveau genre de foraminifere du Cretace superieur
Authors: Marie Pierre 
Published: March 2020

Abstract
Describes a new upper Cretaceous operculinelliform genus of the family Rotaliidae, Goupillaudina, and six new species including the genotype, G. daguini (lower Maestrichtian and upper Campanian). Nummulites senonicus (middle and upper Maestrichtian) is renamed G. senonicus.
Les recifs devoniens de la Belgique
Authors: Lecompte Marius Joseph 
Published: March 2020

Abstract
Presents the results of recent study of the Devonian coral reef formations of the Ardennes region of Belgium. Their distribution, mode of occurrence, and types (bioherms and biostromes) are discussed, the bathymetry of the faunas and contemporary clastic sediments is interpreted, and data on the geologic history, facies, and origin of the reefs are summarized.
Les depots sedimentaires quaternaires et actuels de l'archipel de Kerguelen
Authors: Aubert de la Rue Edgar 
Published: March 2020

Abstract
The surface deposits of the Kerguelen islands in the south Indian Ocean comprise Quaternary and modern sediments found at elevations between sea level and 500 meters. They consist mainly of moraines, littoral marine deposits resulting from reworking of the moraines, torrential and fluvial alluvium, eolian deposits, andformations of organic origin (diatomaceous mud and peat).
Des "charbons" d'origine marine
Authors: Bienner Francois , Feys R. , Louis M. 
Published: March 2020

Abstract
Material resembling lignite, found as intercalations in Liassic marine sequences at Severac and Vassy, France, is the product of transformation of the wood of conifers in a marine environment. From their mixed character, these products appear to be related to the bitumens; their chemical composition is closer to that of the keratogen of bituminous shales than to that of coal.
Les terrasses de la Garonne dans l'Agenais
Authors: Rieucau Louis 
Published: March 2020

Abstract
In the Agen region, France, the evolution of the Garonne valley has been retarded by the presence of limestone ledges. The river terraces therefore are narrow and discontinuous, making observation and dating difficult. Detailed petrographic analysis of the terrace sediments has made it possible to distinguish a high terrace, whose deposits consist mainly of quartz pebbles, and three lower terraces with quartzite and granite constituents.
Contribution a l'etude geologique de l'ile Espiritu Santo (Nouvelles-Hebrides); 1, Roches sedimentaires
Authors: Sagatzky Jean 
Published: March 2020

Abstract
A detailed description of the sedimentary series of Espiritu Santo in the New Hebrides. Three main subdivisions are present, the lowest of which is later than the bulk of the volcanic complex of the island (andesites and labradorite basalts). The sediments are probably all Burdigalian (Miocene) but only the upper unit contains precise paleontologic evidence.
Geologie des formations sedimentaires a l'E de l'Air (Niger)
Authors: Faure Hugues 
Published: March 2020

Abstract
Cretaceous sediments consisting of continental sandstones, with vertebrate remains and silicified wood, overlainby marine fossiliferous Cenomanian-Turonian beds have been preserved in a structural trough cutting deeply into the Aier massif, Niger, west Africa. Part of the present crystalline massifs of the Sahara therefore must have been submerged in the Cretaceous.
Nouvelles observations sur les "gres inferieurs" cambro-ordoviciens du Tassili interne (Nord-Hoggar)
Authors: Borocco Jacques , Nyssen R. 
Published: March 2020

Abstract
The so-called Cambro-Ordovician lower sandstones, a sequence of sedimentary formations between the basement complex and Gotlandian (Silurian) graptolite shales, have been studied in several outcrops in the inner Tassili region, north of the Ahaggar massif, Algeria. Four lithologic units are recognized. The lower two are probably Cambrian. An erosional unconformity separates the third from the uppermost unit. A fauna collected several meters above the unconformity indicates an Ordovician age.
L'Helvetien de Mirabeau (Vaucluse)
Authors: Mongin Denise 
Published: March 2020

Abstract
New stratigraphic and paleontologic data on the Miocene deposits of the Mirabeau area, France, show that the whole series is Helvetian. Cardium turonense is found at the bottom and Chlamys improvisa, C. delphinensis, and C. cavarum in the upper beds. Descriptive notes on the stratigraphic zones and interesting mollusks represented in the fauna are included.
Sur les facies a foraminiferes du Coniacien subrecifal de la region de Foissac (Gard) et sur le nouveau genre Sornayina
Authors: Marie Pierre 
Published: March 2020

Abstract
A new foraminiferal genus, Sornayina, is erected on the basis of material from Coniacian (Cretaceous) deposits of the Foissac region, France, with three new species--S. foissacensis, S. schlumbergeri, and S. munieri. It is ancestral to Spirocyclina. Several facies have been identified within the sequence of upper Cretaceous reef deposits of the region, which are considered to represent conditions favorable for the development of this new genus; similar facies have been identified in Santonian deposits in the vicinity of Martiques, which led to the discovery of numerous specimens of the relatively rare Spirocyclina choffati.
Les recifs carboniferes du Grand Erg occidental
Authors: Pareyn Claude 
Published: March 2020

Abstract
The upper Visean (Carboniferous) reefs of the Grand Erg Occidental (Algeria) in the Sahara region are of several different types--Stromatactis reefs similar to the Frasnian (Devonian) reefs of the Ardennes region; blue-veined and Ptylostroma reefs similar to the Waulsortian reefs; and Lithostrotion reefs. The Ptylostroma reefs and the blue-veined reefs developed in an environment invaded by terrigenous sediments; the other types developed in clearer waters. Reef growth was controlled primarily by subsidence, which was also responsible for extinction of the reef organisms, depending on its rate relative to reef growth.
Les milieux urgoniens cantabriques
Authors: Rat Pierre 
Published: March 2020

Abstract
Rudistid-bearing limestones resembling those characterized by a Urgonian facies which were deposited in lower and middle Cretaceous seas of the Mediterranean region occur in northern Spain, where they are intercalated in a thick sequence of Aptian to Albian formations. In the Cantabrian basin of northern Spain frequent invasions of terrigenous material at irregular intervals interrupted development of the Urgonian reefs.
Remarques sur les faunes de lamellibranches des milieux recifaux mesozoiques (rudistes exceptes)
Authors: Freneix Suzanne 
Published: March 2020

Abstract
Pelecypods other than rudistids were frequent and abundant members of various biotopes of Mesozoic environments and were generally associated with subreef faunas. As a rule these pelecypods are characterized by thick shells, strong hinges, and coarse ornamentation, indicative of adaptation to a highly calcareous environment.
Age des derniers mouvements du graben de la mer Rouge determine par la methode du C14 appliquee aux recifs fossiles
Authors: Nesteroff Wladimir D. 
Published: March 2020

Abstract
Carbon-14 dating indicates that the uplifted reefs of the Arabian coast of the Red Sea are at least 35,500 years old. This permits estimation of the age of last crustal movements that affected the Red Sea graben.
Conduite d'une etude hydrogeologique au Gurp-Grayan-l'Hopital (Gironde)
Authors: Schoeller Henri , Pouchan P. 
Published: March 2020

Abstract
An example is presented of a practical program of ground-water study, as carried out in the Gurp region of Gironde, France. Reconnaissance, exploration, and analysis of the data preceded exploitation. Reconnaissance revealed the presence of three aquifers. Exploration showed that the uppermost aquifer in Quaternary dune sands was the most suitable as a source of water supply. Tabulated data on the chemistry of the waters are included.
Contribution a l'etude du minerai de fer de May-sur-Orne (Calvados)
Authors: Courty Georges 
Published: March 2020

Abstract
The principal iron ore bed of the May-sur-Orne district, France, consists of a mosaic layer of siderite in which oolites are rare, hematite ore, which is oolitic with a siderite cement, and spotted ore, a mixture of different ore types, in which oolites are essentially absent and in whose formation slumping is considered to have been an important factor. These are described, and their origin is worked out on the basis of an analysis of conditions of sedimentation and the physicochemical characteristics of the depositional environment.
Les roches ultrabasiques de la region de Tamatave; mode de gisement, origine et mineralisation
Authors: Giraudon Robert 
Published: March 2020

Abstract
The Ambodiriana series (migmatites, mica schists, and so-called amphibole pyroxenites) of the Tamatave region, Madagascar, is cut by ultrabasic intrusions, some of which carry chromite. These ultrabasic rocks have been moderately metamorphosed since emplacement. The chromite ore occurs in veinlets that dip in the same direction as the surrounding schists. Their chromite content ranges from 60 to 86 percent, but the Cr/Fe ratio is too low for metallurgical purposes.
De quelques faunes des gres inferieurs sur la bordure septentrionale du Hoggar (Sahara)
Authors: Legrand Philippe , Poueyto A. , Rouaix S. 
Published: March 2020

Abstract
The recent discovery of fossils in the rarely fossiliferous sandstones unconformably overlying Precambrian metamorphic rocks on the north border of the Ahaggar massif (Algeria) demonstrates the presence of Ordovician and Gotlandian (Silurian) deposits in these formations. Three new species are described--the brachiopod Dinobolus? amguidensis, the pelecypod Modiolopsis? tiounkelinensis, and Problematicum sahariense, an unidentified shell that is either a brachiopod or a pelecypod.
Donnees nouvelles sur la stratigraphie du Cretace de la region de Lains (Jura)
Authors: Guillaume Solange 
Published: March 2020

Abstract
Several sections in the Lains region, France, provide details concerning the stratigraphy of the Cretaceous of the western Jura mountains, particularly the lower Cretaceous. The stages, although reduced in thickness, exhibit the classic facies of the inner Juras.
Repartition du genre Amussium (pectinide) dans le Miocene de la Provence occidentale
Authors: Catzigras France 
Published: March 2020

Abstract
The presence of species of Amussium in Miocene deposits of western Provence, France, does not necessarily signify deep bathymetric conditions, as is generally assumed for deposits of this facies. Various observations, however, suggest that there probably was a tendency toward deepening of the depositional basin.
Galets anciens dans les cinerites pliocenes du cap d'Ail
Authors: Bourcart Jacques 
Published: March 2020

Abstract
Numerous pebbles of vein quartz, silicified limestone, arkosic sandstone, granite, and rhyolite have been found in Plaisancian (Tertiary) pyroclastic deposits underlying marls of Ail cape (Alpes-Maritimes) on the French Riviera. These pebbles are very different from those on the mainland; they were probably derived from an ancient upland on the site of the present Gulf of Genoa, which sank to depths of more than 2,700 meters as a result of crustal deformation in the Pliocene.