bluuebunny/crossref_metadata_2025_split huggingface dataset:
Etude d'une formation periglaciaire ancienne en Galice (Espagne)
Authors: Nonn Henri , Tricart J. 
Published: March 2020

Abstract
A periglacial formation above the Tertiary peneplain surface cut in schists of the plateau forming the divide between the La Coruna and Lugo drainage systems in Galicia (Spain) is an early Quaternary alluvial cone consisting of alternating beds of pebbles, gravels, and sandy-clayey material. Its age is considered pre-Riss. Its relationship with a drainage change, mode of occurrence, and characteristics serve as criteria for establishing the geomorphic evolution of the coastal zone of Galicia and adjacent areas.
Stratigraphie de la Lettenkohle dans la region de Lons-le-Saunier (Jura)
Authors: Gudefin Henri 
Published: March 2020

Abstract
The Lettenkohle deposits below the Keuper (Triassic) in three deep borings in the Lons-le- Saunier region, France, exhibit uniformity in the sequence and thickness of the beds in the upper zone. Thicknesses are variable in the middle and lower zones, but the total thickness is essentially the same in the borings. Traces of hydrocarbons have been found in the formation, and some production of natural gas and light oil has been obtained.
Stratigraphie du Senonien dans les Dinarides yougoslaves d'apres les rudistes
Authors: Milovanovic Branislav 
Published: March 2020

Abstract
Outlines the paleogeography and describes the stratigraphy of Senonian (Cretaceous) deposits in both the inner and outer zones of the Dinaric Alps of Yugoslavia. The stratigraphic scheme is based largely on rudistid faunal zones which have been established in eastern Serbia (southern Carpathians). Some horizons are very extensive, particularly certain Pironea-bearing zones. Three new varieties of Pironea polystyla (dalmatinica, bacevicensis, and dinarica) are represented in the Dinaric faunas described.
Sur la geologie de l'Istrie meridionale; comparaison avec les regions dinariques et helleniques correspondantes
Authors: Aubouin Jean , Neumann M. 
Published: March 2020

Abstract
Describes the Cretaceous-Eocene sequence of the southern Istrian peninsula, Yugoslavia, and compares it with corresponding sequences of the Dinaric Alps and Greece. The data indicate the presence of a topographic high in the depositional basin, extending from Greece northward to Istria, for which the name Dalmatian zone is proposed. In Greece, where it separates the Ionian trough on the west from the Pindus trough on the east, it is known as the Gavrovo zone.
Observations sur la tectonique de la region cotiere meridionale des massifs du Parnasse-Kiona [with discussion]
Authors: Celet Paul 
Published: March 2020

Abstract
The structural relations of the Parnassus and Pindus zones (Greece) have been studied in the light of geologic observations north of the Gulf of Corinth. Outcrops exhibiting inner Pindus facies near Galaxidia and south of Desfina show that overthrusting of the Parnassus zone is considerably more extensive in this area than previously known. A series of sections illustrates the emplacement of the structural units and the modes of mechanical deformation of the nappe and its substratum.
Caracteres generaux des tonsteins du bassin stephanien de Lons-le-Saunier (Jura); note preliminaire
Authors: Lienhardt Georges 
Published: March 2020

Abstract
Study of different claystones in the Stephanian (Carboniferous) deposits of the Lons-le-Saunier coal basin, France, shows that they retain certain features over relatively long distances. The x-ray diffraction pattern, in particular, is often typical of a given claystone. Kaolinite is practically the only clay mineral present. The claystones must have been derived from the soil cover of a continental land area.
Contribution a l'etude stratigraphique du bassin secondaire du Haut-Atlas occidental (sud-ouest marocain)
Authors: Duffaud Francois 
Published: March 2020

Abstract
Detailed studies in the Mesozoic basin of the western High Atlas region in southwestern Morocco show that two sedimentary cycles are represented in the Triassic. Details of the Jurassic stratigraphy are clarified on the basis of new macro- and microfaunal data and facies studies, and the principal microstratigraphic characteristics of the different Cretaceous and Tertiary stages are summarized.
Stratigraphie de l'Ordovicien de la partie occidentale du jbel Bani et du jbel Zini, Anti-Atlas occidental (Maroc)
Authors: Destombes Jacques 
Published: March 2020

Abstract
Stratigraphic studies in the western part of the Bani and Zini massifs in the western Anti-Atlas range of Morocco show that there is an intra-Caradocian erosional unconformity. The Ordovician section (700 meters) consists mainly of shaly and sandy Arenig beds, dated by graptolites; shaly and sandy Llanvirnian beds (50 meters) are discordantly overlain by coarse and conglomeratic Caradocian beds containing granite pebbles, overlain in turn by shaly lower Llandoverian strata.
Les grands traits structuraux et l'evolution du territoire calabro-sicilien (Italie meridionale)
Authors: Caire Andre , Glangeaud L. , Grandjacquet C. 
Published: March 2020

Abstract
Two major orogenic periods are distinguished in the Tertiary evolution of Calabria and Sicily in southern Italy. In the Oligo-Miocene phase the Sicilian promontory of north Africa moved toward the Apennines, causing formation of thrust wedges and ejection of plastic material This phase was followed by a series of readjustments accompanied by active sedimentation in the basins. In Pliocene-Quaternary time, deformation in the sedimentary mantle shaped the Calabro-Sicilian arc, whose various sections were subjected to differential dislocation.
Les caracteres structuraux des montagnes de la region de Kaboul (Afghanistan)
Authors: Mennessier Guy 
Published: March 2020

Abstract
In the mountains of the Kabul region, Afghanistan, the folded metamorphic basement of undetermined age is unconformably overlain by a thick cover of Permian to upper Cretaceous limestones capped by upper Cretaceous to Lutetian (Eocene) shales and limestones with ophiolites. Following the major orogenic phase, in the upper Nummulitic (Tertiary), deformation of the basement caused dislocations in the cover (folds, thrusts, and important normal faults). Basement deformation involved recurrent movement along faults (generally dipping 45 degrees ) or the thinning of certain less competent beds.
Apercu sur le Quaternaire de Salvador (Amerique centrale)
Authors: Tricart Jean 
Published: March 2020

Abstract
El Salvador is essentially a volcanic region in which an older, presumably late Tertiary, complex of andesite and basalt flows and breccias and younger, more acid Quaternary rocks are represented. Following a long period of inactivity during which the Tertiary volcanic masses were considerably eroded, episodic explosive activity occurred in the Quaternary, accompanied by the formation of extensive calderas and ejection of considerable ash. Paleosols were developed in the intervals between explosions, which permit relative dating of the successive episodes. The last stages of activity were characterized by extrusion of mud flows, torrential gullying, and deposition of thick piedmont detrital beds accompanied by reworking of volcanic ash which was redeposited in dammed lakes and other depressions. The development of calcareous crusts in places constitutes evidence of significant climatic fluctuations. There is also evidence of differential subsidence in coastal areas.
Faille oblique de Jolimont (Toulouse, Haute-Garonne)
Authors: Astre Gaston 
Published: March 2020

Abstract
Excavations for construction at Jolimont revealed an oblique fault, a type hitherto unknown in the Stampian (Tertiary) marls of the Toulouse region, France. It reflects the effects of deep-seated tectonic activity. Its orientation confirms the almost north-south play of fractures in the center of the sub-Pyrenean basin.
Un massif granitique de l'Ahaggar a mode de gisement hybride; le Tihoiiarene
Authors: Boissonnas Jean , Gravelle M. 
Published: March 2020

Abstract
The Tihoiiarene granite massif is a crescent-shaped body on the northeastern margin of a large syntectonic massif of porphyritic granite in the Ahaggar mountains, Algeria. The contact of the Tihoiiarene massif with epimetamorphic Precambrian formations is typically intrusive, but its contact with the porphyritic granite is blurred in places, clear-cut in others, thus providing no evidence of chronologic relationships. Similar cases are known elsewhere; possibly there is a direct relation between the migmatitic (or anatectic) and intrusive granites, the latter grading into subvolcanic plutons.
Sur quelques ammonites du Lias inferieur du Haut-Atlas marocain
Authors: Dubar Gonzague 
Published: March 2020

Abstract
Describes Bouhamidoceras zizense n.g. n.sp. (belonging to the Juraphyllitidae), in different stages of development, from lower Liassic deposits of the High Atlas mountains, Morocco, and four other ammonites from middle and upper Lotharingian (Jurassic) deposits.
Modification des pressions intracristallines et intergranulaires des roches soumises aux variations de temperature
Authors: Deicha Georges 
Published: March 2020

Abstract
Effects of variations of temperature on intracrystalline and intergranular pressures in rocks are reviewed, with particular stress on the importance of maintaining the several factors involved in proper perspective, in order that sequence of changes in a rock during its history may not be misconstrued and that undue importance is not assigned to a given factor merely because it has been investigated in detail while others have been investigated inadequately. Distinguishing between liquid and gaseous inclusions of mineralogic versus metallogenic periods is especially difficult. Proper interpretation of inclusions ruptured by natural means must be supplemented by painstaking care to recognize the ruptures resulting from artificial means such as those produced in preparation of petrographic specimens, blows of the geologic hammer , and during transportation of samples. Liquid CO&lt;2) and other inclusions have been known to rupture from small temperature changes. Water in inclusions in mineral grains can influence the geochemical constitution of water imprisoned in the sediments at time of deposition. Tectonic movements may rupture inclusions, and thereby influence the geophysical history of rocks.
Granites et diorites de la region de Senones (Vosges)
Authors: Nicolas Adolphe 
Published: March 2020

Abstract
The Raon-l'Etape and Senones granite massifs and the Etival diorite massif represent three successive stages of differentiation of magma intruded into the Devonian-Dinantian (Carboniferous) complex of the Vosges mountains, France, during the igneous activity associated with the Hercynian orogenic cycle (late Paleozoic). The diorite massif is the oldest and may have been emplaced before or during the first phases of the orogeny. Formation of the granite massifs took place after the main phase of dislocation.
Le delta vindobonien du bas-pays de Saint-Maximin et de Ginasservis (Var)
Authors: Cornet Cecile 
Published: March 2020

Abstract
General hydrographic relationships of the Saint-Maximin plain during the Vindobonian (middle Miocene) can be determined from the lithology and distribution pattern of the detrital deposits presently covering much of the plain. These deposits are deltaic shale, marl, sandstone, puddingstone conglomerate, tuff, and lignitic clay. They overlie locally-exposed detrital deposits of upper Cretaceous-lower Miocene age, and marl and limestone of Triassic, Jurassic, and Cretaceous age. The plain is largely structural in origin. One fault crops out for more than 20 km. The delta was deposited by abundant runoff from the Maures and Esterel massifs debouching into the Durancian gulf of the Vindobonian sea at Vaulongue.
Maquette d'une carte metallogenique de France au 2 500 000e
Authors: Laffitte Pierre , Permingeat Francois 
Published: March 2020

Abstract
Tectonic, magmatic, metasomatic, and paleogeographic factors important in the formation or localization of metalliferous deposits can be shown satisfactorily at a scale of 1:2,500,000. These are termed metallogenic determinant elements. Metal or mineral deposits are represented by symbolic colors: bright ones for metals and pale ones for the determinants. Deposits, groups of deposits, or indices are shown by figures in the bright colors of the group. Many problems complicate the planning of the map, especially such structural features as the trends in the Armorican massif, the Hercynian tectonic features, and geosynclinal zone relationships.
Utilisation de la radioactivite naturelle du potassium pour son dosage dans les roches par spectrometrie gamma
Authors: Jouve B. , Lansiart A. , Letolle Rene , Morucci J. C. 
Published: March 2020

Abstract
The flame spectrometer permits rapid determination of potassium in rocks, but requires long and delicate manipulations to obtain suitable results. Highly sensitive methods of detecting natural radioactivity suggested the possibility of determining potassium by its gamma radioactivity. Total radioactivity would not give the desired results because potassium normally is accompanied by thorium or uranium in rocks. Gamma spectrometry would permit establishing the proportion between these. The theory, equipment, and methods are discussed in detail and results obtained are good approximations.
Remarques stratigraphiques et tectoniques sur la region de Novara di Sicilia (monts Peloritains, Sicile)
Authors: Truillet Rene 
Published: March 2020

Abstract
North of the limestone chain, in the metamorphic zone of the Peloritani mountains of Sicily, Jurassic limestones are thrust over a conglomerate of Eocene or Oligocene age. The thrust occurred prior to deposition of the Oligocene-Miocene molasse of the region. Molasse and Jurassic limestones are structurally imbricated and in places phyllites are thrust over the limestones and conglomerate. The plastic behavior of the phyllites, and the intensity of erosion since deformation, have resulted in more recent movements on a large scale that further complicate determination of the structure.
Sur les divisions du Dogger dans la vallee de la Creuse (Indre); correlation avec le sud-est du Bassin parisien
Authors: Fischer J. C. 
Published: March 2020

Abstract
Stratigraphy of the Dogger (middle Jurassic) in the southwestern part of the Paris basin, at the north border of the Central Massif is very poorly known because facies are monotonous and outcrops and fossils are scarce. A starting point for working out the stratigraphy is provided by the Creuse river valley, from Argenton-sur-Creuse northwestward to St. Gaultier. Stratigraphic correlations with the southeastern part of the Paris basin were made from 21 good outcrops in the Creuse valley area despite the lack of characteristic ammonites. Dogger formations total more than 100 m thickness, chiefly marine neritic limestones, with intercalated marl in the upper portion. Several meters of lagoonal marl and lignite above the base of the Dogger are transitional from lower to middle Bathonian (upper Dogger). Brachiopods and corals, including reef types, are the chief means of correlation.
Nouvelles observations sur le bassin tertiaire d'Aurillac (Cantal)
Authors: Rey Roger 
Published: March 2020

Abstract
Paleontological investigation of the Oligocene beds in the Tertiary Aurillac basin (France) provides evidence that at the type locality--Puy de Vaurs--the marly limestones are in the upper Stampian, the gravelly shale being attributed to the lower Stampian, a conclusion confirmed by the stratigraphy of neighboring regions in the Saint-Flour basin and Limagne. The tuffs at Pont-de-Gail--southern flank of Cantal--which contain an upper Miocene mammalian fauna, probably correspond to the first eruptive phase of the volcano. A long period of continental alteration followed, succeeded by a second eruptive phase. This was followed by quartzose sedimentation and andesitic intrusion. A new foraminifera species, Caecilianella aurillacensis, is described from the upper Stampian at Puy de Vaurs.
La structure des series nummulitiques de Bejaoua oriental (Tunisie). Note preliminaire
Authors: Kujawski H. 
Published: March 2020

Abstract
Preliminary results of paleontologic and petrographic study of the structure of the Nummulitic series (Paleogene) of eastern Bejaoua, near Mateur indicate that all the clays which separate the Eocene limestone beds of northern Tunisia are not of the same age--some are Priabonian and not the transition clays of the Cretaceous-Tertiary. Distribution of isolated sandstone blocks prove that the area was entirely covered by the sea during the upper Nummulitic (Paleogene). Reinterpretation of the structure shows that the area is a series of simple anticlines and synclines, the Nummulitic series forming a synclinorium.
Les zones d'ammonites du Cenomanien nicois
Authors: Thomel Gerard 
Published: March 2020

Abstract
A restudy of the Cenomanian ammonites of the Nice area, southeast of the Maritime Alps (France), suggests that the conclusion of H. Parent (1945) that the fauna of the upper Cenomanian also occurs in the lower Cenomanian is erroneous. Actually the ammonite zones here conform with those of the rest of the world. Reexamination of Parent's specimens showed that they were too poorly preserved to be identified specifically or, at times, even generically. Subsequent revision of the Chateauneuf fauna revealed that it was entirely lower Cenomanian with the exception of Calycoceras boulei Coll. The locality north of Peille is chosen as the type locality for the Nice Cenomanian. The ammonite zones of the Iberian peninsula, the southeast Maritime Alps, and Madagascar are correlated in a table.
Application de la methode des mineraux lourds a quelques problemes morphologiques des Abruzzes adriatiques
Authors: Demangeot Jean , Ters M. 
Published: March 2020

Abstract
Heavy mineral analysis of samples from the Adriatic side of the Abruzzi mountains gives an indication of the age of the surface of the Gran Sasso plateaus and of the Quaternary continental formations. The absence of heavy minerals characteristic of the Pontian molasse suggests the possibility that the plateaus were never completely covered by the Pontian sea. The isolated molasse deposits which have been reported from the Gran Sasso may have been deposited in small gulfs along the shore of the sea. The Quaternary marine sediments have been dated by their fossil content. The majority of the Quaternary deposits, however, are gravels, breccias and eolian loams which contain neither fossils nor pollen. Cinder showers from Quaternary eruptions on the Tyrrhenian side of Abruzzi were carried by the wind and deposited volcanic minerals which were incorporated in the Quaternary material of the central Apennines. Heavy mineral analysis of the deposits containing these minerals reveals associations which provide a basis for determining the chronology of the Quaternary strata.
Cimentation variable et ferruginisation zonee de niveaux quartzitiques appartenant au 'gres de May' (synclinaux paleozoiques de May-sur-Orne et d'Urville, Calvados)
Authors: Poncet Jacques 
Published: March 2020

Abstract
The May sandstone which crops out in the Paleozoic synclines south of Caen (France) is characterized by ferruginous red-brown veinlets in a predominantly light gray quartzite. Petrographic analysis of the beds reveals a succession of three zones which have certain characteristics in common: quartz grains interpenetrating and shaping each other; grains with radial fissures; and grains including heavy mineral incrustations. These characteristics indicate mechanical action imposed on the sands after their deposition. Three stages in the formation of the sandstone are distinguished. The first phase includes sedimentation, burial and compaction of the deposits, resulting in the formation of stylolites in the biotite layers and establishing variable degrees of cementation as illustrated by the passage of sandstone and quartzite into orthoquartzite. Fracturing during the Hercynian orogeny marks the second phase. In the last phase, meteoric water circulated through the diaclases perforated by stylolites. The biotite was then hydrolyzed, liberating iron which was carried by the water and deposited as hematite veinlets which give the May sandstone its peculiar red color.
Etude de quelques formations detritiques du Cretace moyen du Jura
Authors: Duplaix Solange , Guillaume S. 
Published: March 2020

Abstract
Stratigraphic and mineralogic study of the heavy and light minerals from Cretaceous (Aptian-upper Albian) localities in the Jura (France) indicate their similarity to the neighboring regions. The formations show a uniform mineralogic composition. Qualitative mineralogical analysis of the heavy minerals shows that the Albian sands are homogeneous, essentially composed of tourmaline, zircon, rutile, anatase, and garnet. Andalusite is found frequently and is more abundant than epidote. Mineralogical analysis of the light minerals from the different areas shows that quartz is abundant in all the beds in varying degrees. Glauconite is present in some of the sand beds.
Plusieurs types morphologiques distincts d'Orbitolites de l'Ilerdien pyreneen
Authors: Lehmann Roger 
Published: March 2020

Abstract
Four new species of foraminifera are described from the Ilerdian (Paleocene) of the Pyrenees of France and Spain: Orbitolites gracilis n.sp., O. biplanus n.sp., O. latimarginalis n.sp., and O. ibericus n.sp.
Le Brioverien. Esquisse des caracteres stratigraphiques, metamorphiques, structuraux et paleographiques de l'Antecambrien recent dans le Massif armoricain
Authors: Cogne Jean 
Published: March 2020

Abstract
The stratigraphic characteristics of the Brioverian from Normandy to the Vendee reflect a complete geosynclinal cycle younger than the Pentevrian (Precambrian) but completed before the Cambrian transgression. The Brioverian is the basement rock of the Armorican massif, and thus has the largest areal extent of any Precambrian formation in France. The lower part consists of epimetamorphic basic rocks (ophiolites). The middle part is feldspathic sandstone, phtanite, quartzite, and phyllitic shale. After a short period of emergence, the upper beds were deposited, consisting of the Saint Germain-le-Gaillard rhyolite, the Granville tillite complex, and shale and sandstone at the top. Cadomian folding and granitic intrusion occurred, forming the Cadomian chain prior to Cambrian transgression, and thereby affecting the structure of the Armorican massif. The Brioverian clearly was a folded and partially granitized sole before the dawn of the Paleozoic, but the exact dates of the deposition of the Brioverian and of the Cadomian orogeny are still hypothetical.
Quelques elements structuraux des environs de Castrovillari et de Morano-Calabro (Calabre, Italie meridionale)
Authors: Bousquet Jean Claude 
Published: March 2020

Abstract
Five distinct tectonic units near Castrovillari and Morano-Calabro in the northern part of Calabria contain the Campo-Tenese calcareous dolomite unit; the quartzitic epizonal lower flysch; the Castrovillari-Morano calcareous dolomitic unit; the upper flysch, a quartzitic calcareous flysch and the Mount Pollino calcareous dolomitic unit. The Mount Pollino is separated from the lower units by recent thrust faults and may be part of the strata underlying the other four.
Les series calcaires sous-jacentes a la formation de Reitano, dans la region de Caronia-Mistretta-Castel di Tusa, Monts Nebrodi (Sicile septentrionale)
Authors: Duee G. 
Published: March 2020

Abstract
Underlying the Reitano marl of northern Sicily (Italy) is an almost continuous band of vari-colored clay which seems to correspond to the Monte Soro flysch. Their similarity and the presence of Cretaceous flysch with an abundance of quartzitic sandstones near Caronia suggest that the Monte Soro flysch and the Reitano formation were deposited in the same or contiguous zones. The clay is overlain by Eocene limestones and conglomerates similar to beds of the Peloritani mountains. Underlying the clay are the Polizzi series whose upper contact is probably not conformable.