bluuebunny/crossref_metadata_2025_split huggingface dataset:
Madreporaires du Devonien du Chenoua (Algerie)
Authors: Semenoff-Tian-Chansky Pierre , Lafuste J. , Durand Delga M. 
Published: June 2020

Abstract
Describes the madrepores (including Pachyphyllum chenouensis n.sp.) of a Devonian coral fauna from the Chenoua promontory at the western end of the Kabylia massifs of Algeria. For the most part the fauna comprises more species known from western and central Europe and the USSR than species described from the Sahara and Morocco. The madrepores indicate a Givetian-Frasnian age for the enclosing beds, which probably represent the boundary between the two stages.
Les roches filoniennes basiques de la rade de Brest; kersantites et dolerites
Authors: Metais Danielle 
Published: June 2020

Abstract
The Brest harbor region, western Brittany, France, is located in a synclinorium of Devonian sedimentary rocks, bounded on the north and east by granite and gneiss and cut by numerous bodies of igneous rocks ranging in chemical composition from acidic (microgranite) to basic (dolerite and lamprophyre). Three types are distinguished among the basic rocks--pyroxene-poor dolerite, dark-colored pyroxene kersantite, and light-colored micaceous kersantite. They are considered to represent a continuous petrogenetic sequence.
Les dissolutions de gypses anteludiens dans le centre de l'Ile-de-France et leurs dangers pour les constructions
Authors: Soyer Robert 
Published: June 2020

Abstract
An elliptical pressure-arch cavern in gypsum interbedded in the St. Ouen limestone and marl of Ledian (upper Eocene) age was discovered in 1960 by workmen repairing the pavement of a street in Paris, France. Caverns and collapsed galleries are well known in the overlying gypsum of Ludian (upper Eocene) age, but this discovery demonstrates their existence in the St. Ouen limestone-marl, and also possibly in the Beauchamp and Monceau sandy and gravelly marls. Exploratory drilling is required prior to construction involving any of these strata in which subterranean solution caverns in gypsum might occur.
Niveaux a algues dans le Thanetien des Pyrenees (Corallinacees, Solenoporacees, Squamariacees, Incertae familiae)
Authors: Segonzac Genevieve 
Published: June 2020

Abstract
Microscopic study of Corallinaceae algae previously described from the Thanetian (lower Eocene) of the Pyrenees shows that 34 of the species belong to existing species, and only 21 are actually new species. Although these algae are quantitatively important in the region, the generally poor state of preservation made identification difficult.
Trilobites devoniens de la partie occidentale de la zone axiale pyreneenne
Authors: Mirouse Raymond , Pillet Jean 
Published: June 2020

Abstract
The Devonian begins in the western part of the axial zone of the Pyrenees as a detrital series of pelite, sandstone, and some limestone. The series, known in the vicinity of the Aubisque, Soulor, and Pourtalet passes, has been correlated with Coblentzian (lower Devonian). The trilobite genera Phacops, Odontochile, and Asteropyge are present in these strata. None of these recognized forms is truly early Devonian. They characterize the base of middle Devonian, thus the age of the strata must be changed to Eifelian (lower middle Devonian).
Les ecailles de Combecave, pres de Cabasse (Var)
Authors: Castor Emile , Mennessier Henri L. , Mennessier G. 
Published: June 2020

Abstract
Underground workings of the Combecave mine in the Issole river valley in Provence, southeastern France, show complex imbricate structure under the Vins thrust fault. Rocks in the mine are principally lower and middle Jurassic limestones and masses of bauxite. The bauxite was disharmonious in the deformation, and formed tongue-like masses in the faulted limestone.
Contribution a la stratigraphie du Cambro-Ordovicien dans le bassin saharien occidental
Authors: Legrand Philippe , Nabos Genevieve 
Published: June 2020

Abstract
Lithostratigraphic study of cores in the vicinity of Hassi Messaoud and Oued Mya, Erg el Anngueur, and Fort Miribel (Algeria) has resulted in the description of a type section for the Cambro-Ordovician series in the western Sahara which includes five stratigraphic units. The lower Cambrian is represented by the Hassi Messaoud sandstone group, overlain by the Cambrian-Ordovician Isometric sandstone formation. The Ordovician is represented by the Tremadocian lower argillite formation and the lower Arenig intermediate quartzites. In the Erg el Anngueur area a shale-sandstone complex overlies the lower argillites The Ol.1 sandstone is transgressive on the stage below and is overlain by the upper argillite formation and the terminal sandstone-shale complex which represent undifferentiated Arenigian-Llanvirnian. A brief outline of the paleogeographic aspects of the region is discussed in relation to each unit.
Sur la presence de l'Eocene dans les calcaires superieurs de l'Olympe (Thessalie septentrionale, Grece)
Authors: Godfriaux Ivan 
Published: June 2020

Abstract
The presence of nummulites--?N. millecaput--and other foraminifera in the uppermost limestones of Mt. Olympus (Greece) indicates that the limestone series extends from the Triassic into the Eocene, probably Lutetian. Sandy-shaly flysch concordantly overlies these limestones. Since the limestones show effects of the orogenic movements which disturbed the internal zones of the Hellenides, the Olympus folding is attributed to the upper Eocene. It is concluded from this that Mount Olympus was emerged at the beginning of the Eocene and escaped the invasion of terrigenous material from adjacent regions.
Nouvelles donnees sur la stratigraphie du Primaire des environs d'Ainhoa (Basses-Pyrenees)
Authors: Drot Jeannine , Lagny Philippe , Sagon Jean Paul 
Published: June 2020

Abstract
Discovery of a fossiliferous horizon in the Anhoa area of the Basses Pyrenees of southwestern France dates as Siegenian or Emsian (lower Devonian) a formation underlain by a shale-sandstone series whose age has been considered either Silurian or Dinantian (Carboniferous). The normal contact with the overlying Devonian rules out a Dinantian age for the shale-sandstone series. The Devonian seems to be transgressive upon the series, indicating a lacuna. Comparison with other localities in the Basque Pyrenees suggests a Caradoc (Ordovician) age for the series.
Contribution a l'etude geologique des guelb Bou Leriah (region d'Aoucert, Sahara Espagnol)
Authors: Sougy Jean 
Published: June 2020

Abstract
A Paleozoic autochthon in the Bou Leriah-Aoucert area of the southern Spanish Sahara comprises Ordovician (?) sandstone and quartzite, Silurian limestone, and a lower Devonian series of alternating shale, sandstone, fossiliferous limestone, and phosphate beds. The autochthon is progressively more folded toward the west, and becomes increasingly fissured and brecciated upward with approach to the mylonitized gliding zone. The overlying allochthon is sericitized quartzite and schist of undetermined age. The tangential tectonic deformation is post-lower Devonian, and probably is Frasnian (upper Devonian).
Les cephalopodes cenomaniens des environs de Jerusalem
Authors: Avnimelech Moshe A. , Shoresh R. 
Published: June 2020

Abstract
Describes ammonites (including Utaturiceras bethlehemensis n.sp.) and nautiloids from Cenomanian (Cretaceous) deposits in the vicinity of Jerusalem, Israel. The fauna permits recognition of four zones in the Cenomanian section.
La depression d'Ensues (Bouches-du-Rhone) et ses environs; details de structure
Authors: Humbert Simone 
Published: June 2020

Abstract
The Ensues depression is one of a series of Aptian (Cretaceous) depressions along the axis of the Jurassic-Cretaceous anticlinal structure of the Nerthe range, northwest of Marseilles, France. Details of its structure are described, and it is concluded that the depressions are not tectonic windows, but the product of downfaulting accompanying flexuring.
Le Brioverien superieur (X3) aux environs de Granville (Manche)
Authors: Roblot Marie Madeleine 
Published: June 2020

Abstract
Study of outcrops at different localities shows that the succession of upper Brioverian deposits in the Granville area, Normandy, France, comprises, from the base upwards, tillites, varved shales, coarse sandstones, and deposits of the Laize stage.
Considerations paleogeographiques sur la patrie supposee des nappes de Flysch a Helminthoides des Alpes et des Apennins
Authors: Lanteaume Marcel 
Published: June 2020

Abstract
Paleogeographic questions are posed by an original connection between the Helminthoides flysch of the Maritime Alps and the Apennines. A vast middle and upper Cretaceous flysch and scaglia pelagic sedimentary trough, the Genoese-Tuscan basin, is discussed. It is concluded that the detritus that filled the basin came from two bordering crystalline massifs. The upper Cretaceous paleogeography of the Italian and Dinaric Alpine region is reconstructed.
Lignes et problemes tectoniques du secteur nord-ouest de l'Apennin septentrional
Authors: Boni Alfredo 
Published: June 2020

Abstract
Thirty structural sections in the northern Apennines (Italy) are described and discussed with reference to the tectonic forces that acted upon them. Deformations from pre-Tortonian through upper Miocene and probably into the Pliocene oriented structures in such a way that present strike directions are indicative of identifiable stages of movement. The study leads to the conclusion that nappes are the result of overthrusting rather than gravitational sliding.
Les phases tectoniques neogenes de l'orogenese alpine dans l'Apennin septentrional
Authors: Giannini Enzo , Tongiorgi Marco 
Published: June 2020

Abstract
Tectonic activity in the northern Apennines (Italy) is traced from the Oligocene to the Pliocene. The paroxysmal phase, extending from the middle Oligocene into the Aquitanian, was marked by positioning of the Tuscan and Ligurian nappes, shrinking of the crust, and folding of the autochthon. The present general topography of the northern Apennines can be attributed to activity during this phase. During the upper Tortonian second phase, movement was renewed and the two nappes assumed their present positions. The third phase, during the lower Pliocene, was marked by limited gravity sliding.
Donnees nouvelles sur la tectonique tertiaire des massifs calabro-lucaniens
Authors: Grandjacquet Claude 
Published: June 2020

Abstract
Tertiary gravity sliding of the north Calabrian sedimentary series in Italy is considered with reference to a system of large displacement thrust faults, and to facies change between western siliceous sediments and eastern reef sediments. The eastward sliding of the nappe is traced until it collided with the north Calabrian massifs and was split. One part slid onto the coastal chain and central Calabria; the other pushed the Calabro-Lucanian massifs east and then north.
Observations sur la region de Longobucco (Italie meridionale)
Authors: Afchain Claude 
Published: June 2020

Abstract
The Longobucco area displays a secondary sedimentary basin transgressive on a granite-phyllite basement. The sedimentary sequence begins with lower Jurassic quartzose conglomerate containing granite and phyllite. The conglomerate is overlain by a homogeneous calcareous marl which forms a large part of the basin and has been divided into lower, middle and upper Liassic (lower Jurassic) by dating with brachiopods, pelecypods and cephalopods. The middle Jurassic consists of red limestones of the Torrente Colognati valley. Cretaceous rocks are not present, probably because of erosion rather than non-deposition. Tertiary rocks begin with either the Paleocene or Eocene as evidenced by the abundance of Distichoplax in the microfauna.
Les arcs calabro-siciliens et les relations entre Afrique du nord et Apennin
Authors: Caire Andre 
Published: June 2020

Abstract
A clarification of the paleogeographic relationships between the Berber mountain system of north Africa and the Apennines is related to a study of structural trends in southern Italy and Sicily. In the Peloritani mountain area of southern Sicily, Alpine age structures describe arcs opening to the northwest and are a transition from the E-W trend of the Berber and the Apennine trend. The WNW-SSE trending Catanzaro zone at the northern end of the arcs represents a zone of probably lower Miocene displacement. Prior to the Oligocene paroxysm, certain facies were common to western Calabria and the southern Apennines and it is assumed that they were deposited in a single continuous basin. Cretaceous flysch and nummulitic facies differences between north Africa and the Apennines are explained through introduction of varied sources for the sediments of the two areas.
Association de Chitinozoaires sahariens du Gothlandien superieur (Ludlowien)
Authors: Taugourdeau Philippe 
Published: June 2020

Abstract
Twelve Chitinozoa species (genus Ancyrochitina, Angochitina, Conochitina and Desmochitina) recovered from well samples near El Golea in the Sahara, are briefly described. They have been dated by the associated macrofauna as Ludlovian.
Prelude a une typologie des massifs granitiques
Authors: Pavillon Marie Jose , Routhier Pierre 
Published: June 2020

Abstract
Based on their chemical and chronologic characteristics the granitic rocks of massifs are classified in two groups: syntectonic and late tectonic granites of the first phase; and extensively fractured, with coal deposition and later mineralization of the second phase. A structural analysis of the Meymac region (central French massif) is used as an example as it represents a granitic pluton, with continuous evolution resulting in a zonal distribution of the minerals and formations. The typological determination of granitic massifs requires specifically defined terminology, and metalliferous deposits must be differentiated. Examination of the granitic facies reveals four types of massifs: massifs with porphyritic granite associated with medium-grained non-porphyritic granite; massifs with porphyritic granite containing fine-grained granite bodies; massifs of coarse-grained, non-porphyritic granite; and massifs of varied facies disposed in an irregular manner. Typology seems to be a possible beginning in the study of the dynamics of deepseated petrogenesis.
Les transferts d'echelle en geologie et geophysique. Application a la Mediterranee occidentale et aux chaines peripacifiques
Authors: Glangeaud Louis 
Published: June 2020

Abstract
The problem of scale changes in geology and geophysics is discussed as they affect the methods, concepts, and axioms of structural studies on a megametric scale. This is necessary for the construction of megametric and geonomic tectonic maps and in defining the basis of paleophysics. Geodynamics can be applied to the large scale problems of chronologic correlation. The classification and megadynamics of crust and mantle are discussed in terms of data and methods, megametric and geodynamic mechanics, submarine morphology, and marginal zones. Recent deformation of the internal and peripacific regions is described. Bimarginal structures of the Caribbean and Mediterranean types are considered. Structures existing on a megametric scale and the phenomena linked to them represent the transition between the kilometric scale of geology and the geonomic and astronomic scale of geophysics.
Les Miogypsinidae de deux coupes profondes des Landes
Authors: Bielle Mariette , Caralp Michelle 
Published: June 2020

Abstract
The study of Oligocene and lower Miocene formations in two borings in Landes (Arjuzanx and Tartas-Cellulose I) is based on the Miogypsinidae. The distribution of the different genera and species has permitted the distinction of five successive faunal groups. The stratigraphic position of these groups is determined on the basis of results from an earlier study of the Oligocene and Miocene of Aquitaine. Several specimens close to Miogypsinoides dehaartii (van der Vlerk) and Miogypsina borneensis (Tan Sin Hok), but different in certain respects, are described and illustrated.
Morphologie du substratum de l'Etang de Berre
Authors: Leenhardt Olivier , Roux Max Robert 
Published: June 2020

Abstract
A continuous seismic profile has shown that the Berre lagoon (Bouches-du-Rhone, France) comprises two depressions, cut in the upper Cretaceous or Miocene substratum, which are filled by sediments giving variable reflections. The depressions may have formed as a result of two Ponto-Pliocene erosional cycles succeeded by an influx of mixed detritus in the Quaternary.
La microfaune actuelle et subrecente d'une carotte atlantique (golfe de Gascogne); observations ecologiques et climatiques
Authors: Caralp Michelle , Moyes Jean , Vigneaux Michel 
Published: June 2020

Abstract
Arctic and boreal foraminifera and ostracods, cold current, upward change from cold to temperate assemblages as an indication of Quaternary glaciation, France
Eocene superieur et Oligocene de Pereal (La Debruge-Sainte-Radegone, pres Apt, Vaucluse)
Authors: Truc Georges , Demarcq Gerard 
Published: June 2020

Abstract
Lithostratigraphy, lateral facies variations, lignitic beds, vertebrate fauna, Eocene-Oligocene boundary, Ludian (Eocene), France
Observations tectoniques dans le Pacifique (Hawaii, Tahiti, Nouvelles-Hebrides)
Authors: Geze Bernard 
Published: June 2020

Abstract
The Pacific islands of the Hawaii, Society, and New Hebrides groups are characterized by curvilinear faults resulting from peripheral subsidence slippage of portions of the islands toward the ocean deeps. The curvilinear faults are the sites of volcanic manifestations, particularly at junctions with other faults. Faults of the Hawaiian islands (Kilauea, Mauna Loa, and Mauna Kea volcanoes) and Maui (Haleakala) are concave to the southeast. The great curved fault of Oahu and Molokai is concave to the north. Faults in the islands of Moorea and Tahiti of the Society group are concave northward. Faults in the New Hebrides, on the contrary, are concave to the southwest, as are those in the Solomon and New Britain islands. Alpine structure in embryonic form thus is prolonged from the Himalayas and East Indies to the New Hebrides.
Sur une roche de nature lamprophyrique dans la region de Saint-Bresson (Haute-Saone)
Authors: Guintrand Yves , Metais Danielle , Thiebaut Jean 
Published: June 2020

Abstract
An apophysis of the Ballons granite at Saint Bresson in the Vosges of eastern France consists of a central mass of microgranite with a gradational border facies of lamprophyre. The two rock facies are chemically identical.
Utilisation du dosage de l'uranium, par fluorometrie, dans l'etude du Paleogene continental du seuil du Poitou
Authors: Steinberg Michel 
Published: June 2020

Abstract
Differences in the tenor of uranium, soluble in 2.5 N nitric acid, from different beds of the Paleogene continental sedimentary deposits in the Poitou strait in western France suggest two distinct sources of the uranium. Clays derived from erosion of Mesozoic limestones are very poor in uranium, but an appreciably greater content characterizes the transported detrital deposits derived from erosion of the central massif and the Gatine hills of Vendee.
Contribution a l'etude des formations plio-quaternaires des Alpes-Maritimes
Authors: Siffre Michel 
Published: June 2020

Abstract
The Pliocene formations of the lower valleys of the Siagne and Argentiere rivers in the Maritime Alps of southeastern France are Plaisancian (lower Pliocene). Several facies are present. Labradorite-andesites of the Aspres hills between Biot and Villeneuve-Loubet, including both flow rocks and pyroclastics, are also Plaisancian as they are intercalated in shales of that age. Fossil wood occurs in the pyroclastics; one tree trunk is nine meters long by 50 centimeters thick. The principal Quaternary deposits in the Siagne valley are marine sands and clays overlain by black lagoonal clays. The Argentiere valley is characterized by fluviatile deposits.
Elaboration d'une stratigraphie paleomagnetique des formations volcaniques
Authors: Roche A. 
Published: June 2020

Abstract
From the analysis of the natural magnetism of rocks, a component--thermoremanent magnetism (T. R. M.)--can be isolated, which corresponds to the magnetism acquired by the rocks at the time of their formation. Results of observations based on the method show that the earth's magnetic field resembles the field created by a geocentric dipole, the axis of which, as related to the earth's crust, has changed considerably throughout geologic time. The intensity of the field has also varied although it is not certain to what degree. Observation of the nature and direction of the rock magnetism shows that the trajectory of the geomagnetic axis, in the course of time, corresponds to a complex curve with numerous reversals and points of intersection. Figures for the declination and inclination of the magnetic field obtained from Precambrian to Quaternary rocks of France and other areas of western Europe indicate that magnetic inclination during the Silurian and Devonian and the Permian and Triassic was slight; that magnetic declination was more often to the east than to the west; and that in the Permian, Triassic and Cretaceous variations in direction were of little importance and reversals were numerous, while in the Carboniferous and Neogene there was considerable variation in direction with fewer reversals.
L'eruption volcanique de 1960 au Lopevi (Nouvelles-Hebrides)
Authors: Remy Jean Marcel 
Published: June 2020

Abstract
The first of four phases observed in the eruption on the western coast of Lopevi was marked by explosive activity during which the old crater reopened and a new crater, referred to as the upper crater, was formed. A smoke avalanche carrying scoria, lapilli, and cinders spread subhorizontally and represented the second phase. In the third phase, four lava flows containing jagged, scoriaceous blocks 10-50 cm in diameter were emitted from the base of the upper crater, covering part of the deposits of the smoke avalanche. The fourth phase was marked by the opening of several new vents characterized by activity involving the emission of either gaseous jets, alternating smoke wreaths and loud explosions, or gaseous clouds and lava flows from lower craters accompanied by a decrease in the activity in the upper crater. Petrographic analysis of the lavas shows that they are andesitic basalts containing plagioclase and forsterite phenocrysts and plagioclase microlites. Petrogenic evidence shows that the rocks of this eruption resemble the series of alkalic olivine-bearing basalts, and in some cases possess characteristics similar to the tholeiitic series.
La diversite des basaltes
Authors: Yamasaki Masao , Brousse Robert 
Published: June 2020

Abstract
By comparing the basalts from different areas, France and Japan in particular, two major groups can be distinguished--rhyolitic basalts and phonolitic basalts. Subdivisions recognized in each group represent the median points in the progressively changing suite of the basaltic lavas. The rhyolitic basalts are divided into four categories--tholeiites, high-alumina basalts, trachybasalts, and trachybasalts of the Puys chain. The phonolitic basalts are characterized by their poor silica content, giving rise to the crystallization of olivine and nepheline (basanites). This group includes the olivine-basalts of the Pacific and of Mont-Dore (France). Comparison of the mineral content of the basalts shows that they contain progressively larger amounts of dark minerals such as olivine and titano-augite in proportion to the diminishing silica content--a progression ending with the ankaramites, oceanites, and picrites. The theory that basalts are formed by the partial fusion of the peridotite mantle--those poor in silica at greater depths than the silica-rich--explains the continual variation in the chemical and mineralogical composition of the basalts studied. The shallower, rhyolitic magmas flow easily, dominating the larger volcanic complexes (Hawaii, Deccan, Mont-Dore, Cantal), while the deeper magmas, the basanites, form only rare batholiths of smaller proportions, as in Lorraine.