bluuebunny/crossref_metadata_2025 huggingface dataset:
Recherches geologiques preliminaires dans le massif du Parnasse (Grece)
Authors: Celet Paul
Published: March 2020

The stratigraphic sequence of the Parnassus massif in Greece begins with coral-bearing upper Triassic dolomites and limestones, which are overlain by a thick series of Mesozoic limestones capped by red shaly marls and sandy Flysch formations. The structure was influenced by the rigidity of the limestone cover, which is faulted and overthrust in slices toward the east-northeast. The massif as a whole is cut by deep east-west-trending faults, along which the large grabens bounding the massif on the north and south were downdropped.
Considerations sur l'evolution des hippuritides d'apres des materiaux des Corbieres et de l'Ariege
Authors: Senesse Pierre
Published: March 2020

A detailed examination of rudistid pelecypods belonging to the family Hippuritidae, based on material collected from Cretaceous localities in the Corbieres mountains and the Ariege region, France. Certain forms are recognized as intermediate in evolution between Hippurites primordialis and Vaccinites grossouvrei, leading to the creation of a new genus, Pseudovaccinites. Many Hippurites species, as well as V. grossouvrei, acquire some characteristics of Pseudovaccinites in the course of their phylogenetic development.
La sedimentation a l'aval du graben de l'Amazone
Authors: Pimienta Jean
Published: March 2020

The Amazon basin is a graben that has been filled since Carboniferous time by essentially continental sediments. Near the mouth of the river, deposition has accompanied or produced variations in the coast line. At present the sea is advancing after a withdrawal, as it did in the upper Miocene. Earlier shifts of the coast line, although clear, have not been dated. At least in part, retreats of shore lines are due to deposition resulting from periodic denudation of the forest in the hinterland.
L'apport geologique des travaux de recherche de la Compagnie d'Exploration petroliere
Authors: Mainguy Maurice , Gottis M.
Published: March 2020

Summarizes various new details of geology revealed by exploratory borings and geophysical surveys in Languedoc, Basses-Alpes, the Paris basin, and Aquitaine, France.
Contribution a la faune devonienne du bassin de Taoudeni
Authors: Villemur Jean Remy , Drot J.
Published: March 2020

Describes a spirifer, probably Pustulatia pustulosa, found in Devonian deposits of the Taoudenni basin, French West Africa. The species is a well known North American form.
Les echinodermes permiens du Djebel Tebaga (extreme sud tunisien)
Authors: Termier Henri , Termier G.
Published: March 2020

Describes echinoderms from Permian deposits of the Tebaga massif in southernmost Tunisia. These include stem and calyx fragments of crinoids and isolated plates and radioles of the echinid genus Archaeocidaris.
Stelleride du Cenomanien moyen d'Indre-et-Loire
Authors: Dollfus Robert Ph
Published: March 2020

Describes a starfish of the genus Archastropecten from a middle Cenomanian (Cretaceous) sandstone locality of Indre-et-Loire, France.
Essai sur l'orogenie alpine en France
Authors: Gidon Paul
Published: March 2020

The theory which attributes orogenic processes to the effects of subcrustal erosion by magmatic currents is found to give a satisfactory explanation of the Alpine orogeny in France. Its application to an analysis of the Tertiary history of the Alpine structure results in a structural plan which corresponds to the present distribution of the tectonic units.
Les gres de Mouka-Ouadda, en Oubangui-Chari oriental
Authors: Bessoles Bernard , Delafosse R.
Published: March 2020

The Mouka plateau in eastern Ubangi-Shari, French Equatorial Africa, is composed of two sandstone complexes--a basal group of conglomerates, conglomeratic sandstones, and argillites, and a complex of white kaolinitic sandstones. The sequence is mainly fluviolacustrine in origin, but the upper beds may be eolian. Fossil evidence is lacking, but data on facies indicate analogies with Cretaceous beds of the Continental intercalaire formation and Kwango deposits elsewhere.
Sur la metallogenie de la region d'Akjoujt (Mauritanie)
Authors: Vincienne Henri
Published: March 2020

The metallic deposits of the Akjoujt region in Mauritania, French West Africa, are syntectonic and represent a special type of high-temperature mineralization. Without noticeable break, the mineralization consists on the one hand of a rich paragenetic sequence of minerals derived from basic rocks, which had been mobilized and concentrated by metasomatism associated with migmatization, and on the other of a pneumatolytic paragenetic sequence of acid pegmatite character, apparently derived from the migmatites themselves. The Guelb Moghrein and Tabrinkout deposits represent the end members of this mineralization, the former related mainly to the migmatites, the latter to the pegmatites.
Une tourbiere littorale, Colleville-s-Mer (Calvados)
Authors: Elhaie Henri , Sparks B. W.
Published: March 2020

Pollen analysis of a coastal peat deposit at Colleville-sur-Mer, Normandy, France, and examination of the molluscan fauna of interstratified beds, shows that the peat is postglacial in age. Discontinuity of the peat and interbedded layers is due to slumping and sliding of calcareous mud derived by alteration of Jurassic Bradfordian deposits overlying Vesulian clays.
Sur le granite de Flamanville
Authors: Perrin Rene
Published: March 2020

New exploration of the contacts of the Flamanville granite massif, northwest France, confirms the conclusion that its origin is due to granitization in place. The supporting evidence is outlined. Associated aplite dikes were also formed by replacement in the solid state.
Existence d'une serie cretacee allochtone dans la region occidentale du Parnasse (Grece)
Authors: Celet Paul
Published: March 2020

There are two distinct Cretaceous series in the western Parnassus massif in Greece. The Parnassus series corresponds to a zone of shallow calcareous sedimentation, which was emergent for a considerable period of time, during which bauxites were formed. The Jerolekas series is characterized by detrital material derived from the Pelagonian massif and contains flyschlike zones. It constitutes an allochthonous tectonic unit overthrust from the east on the Parnassus series.
Contribution a la geologie des gisements de thorianite a Madagascar
Authors: Brenon Pierre
Published: March 2020

Thorianite occurrences of southern Madagascar are found in diopside pyroxenites, plagioclasites, or marbles of the Tranomaro group in the Androyen series of the Precambrian basement complex. The mineralization shows very few features in common with the phlogopite mineralization of the Ampandrandava group, but both were probably contemporaneous. Origin of the thorianite is most simply and logically explained as due to precipitation of thorium hydrate in the magnesian marly-limy sediments which became the rocks of the Tranomaro group.
Le gisement villafranchien de l'Ain Brimba (Sud-Tunisien) et sa faune
Authors: Arambourg Camille , Coque R.
Published: March 2020

Describes the mammalian fauna and stratigraphic position of a new Villafranchian bone deposit at Aien Brimba in southern Tunisia. The locality extends the known area of occurrence of the Villafranchian fauna and is important for the study of the early Quaternary of north Africa.
Sur l'age de la phase tectonique "antesenonienne" a l'W du Devoluy (Drome)
Authors: Mercier Jacques
Published: March 2020

In the synclinal zones west of Devoluy, France, the Senonian (Cretaceous) rests transgressively and discordantly on a system of eroded folds trending east-northeast-west-southwest. The sedimentary hiatus occurs between the upper (but not uppermost) Cenomanian and the Santonian in one of the synclines, and between the terminal Cenomanian and the Turonian (very probably upper Turonian) in the other. At present the most precise date that can be assigned to the major tectonic phase responsible for the approximately eastwest folds is lower to middle Turonian.
Grandes lignes de la structure des Corbieres orientales
Authors: Barrabe Louis
Published: March 2020

The broad structural features of the eastern Corbieres range, France, are outlined as background for the 1958 field excursion to the eastern Pyrenees by the Societe Geologique de France. The Oligocene Narbonne basin, the nappe of the eastern Corbieres and its southward prolongation, the Jurassic and Cretaceous plateaus of Pla del Val and Perillos, and the Tuchan region are described briefly.
Le plutonisme sialique, ses relations avec le metamorphisme dans les Pyrenees orientales et centrales
Authors: Glangeaud Louis
Published: March 2020

Remelting of sialic material at the level of the deepest gneisses is considered responsible for formation of the basal parts of post-tectonic granitic plutons of the Pyrenees. In upper zones the genetic process may terminate in subvolcanic or volcanic phenomena. As they require a complex interplay of independent processes for their formation, such plutons are less common than metamorphic zones and migmatized deep layers.
Donnees nouvelles sur le Nummulitique pyreneen
Authors: Mangin Jean Philippe
Published: March 2020

Details of the stratigraphy of the Nummulitic (Tertiary) of the south flank of the Pyrenees (Spain) are reviewed, and the history of the range during that time is outlined. Preliminary orogenic movements occurred in the lower Lutetian; the major folding took place at the end of the Oligocene or the beginning of the Miocene.
Etude tectonique du massif de la Loube (Var)
Authors: Mennessier Guy
Published: March 2020

The structure of the Loube massif in Var, France, is typical of the ranges of Provence. The Jurassic cover is divided into a mosaic of independently dislocated segments, reflecting the effects of recurrent movement of basement structures. Development of the mosaic structure and east-west folding in the Cretaceous were succeeded by overthrusting and deformation in the Lutetian-Bartonian (Eocene), with an intervening period of erosion.
Observations nouvelles sur le "Cambro-Ordovicien" du plateau mandingue occidental (A.O.F.)
Authors: Dars Rene , Sougy J. , Vogt J.
Published: March 2020

The stratigraphic column of the western part of the Mandingue plateau (Soudan), west Africa, is similar to that of the Kayes region. Study of sections at several localities confirms the erosional unconformity in the Cambro-Ordovician previously identified in the Kayes region and shows that the Ordovician is less extensively developed than previously mapped. The argillaceous-calcareous conglomerate in the lower part of the sequence is probably a tillite.
Sur l'identite des formations sedimentaires de la region de Kiffa et du Falemien de Selibabi (Mauritanie)
Authors: Bense Claude
Published: March 2020

The relationships between the Falemian deposits of the Selibabi region and the sedimentary formations of the Kiffa region, both in Mauritania, have been investigated. The formations were found to be similar. The Falemian deposits are the folded and metamorphosed equivalent of Paleozoic deposits to the east, and are not Precambrian. The Selibabi granites are therefore considered Hercynian (late Paleozoic).
Les lamellibranches du Djebel Tebaga
Authors: Termier Henri , Termier G.
Published: March 2020

Reports the genera represented in a sparse and poorly preserved pelecypod fauna from the Tebaga massif in southern Tunisia, which is of great interest because it fills a gap between Paleozoic and Mesozoic (Triassic and Liassic) forms.
Observations sur les recifs coralliens du sud-ouest de Madagascar
Authors: Battistini Rene
Published: March 2020

The southwest coast of Madagascar is bordered by a fringing coral reef which locally tends to become a barrier reef. Its form can be explained as the combined product of erosion, together with other present-day coastal processes, and secondary eustatic and tectonic influences. The most frequent transverse zoning is that characteristic of a reef battered by strong oceanic surf.
Madreporaires rauraciens et riviere quaternaire de Pintheville (Meuse)
Authors: Basse Eliane
Published: March 2020

Due to their mechanical resistance, fossil corals are preserved as pebbles in Quaternary river alluvium and thus form markers by means of which the former course of streams can be traced. The Quaternary drainage of the Pintheville area, France, is reconstructed by tracing the source of madrepore-bearing pebbles in the Quaternary alluvium.
La prospection petroliere dans le perimetre de Dammartin (Seine-et-Marne)
Authors: Tilloy Robert
Published: March 2020

Describes petroleum exploration and the production obtained to the end of May 1959 in the Coulommes and Vaucourtois structures in the Dammartin region, France. Both the Jurassic and lower Cretaceous formations traversed by the borings show lateral variations in thickness, indicating deposition in an unstable zone.
Note sur les fontaines salees de Saint-Pere-sous-Vezelay (Yonne)
Authors: Horon Octave , Megnien C. , Soyer R.
Published: March 2020

A geologic, geophysical, and hydrogeologic study of the area in which the Saint-Pere-sous-Vezelay saline springs are located, in the Cure valley, France, shows that their emergence is controlled by transection of a fissured north-south fault zone of the Morvan massif, along which the waters percolate, by a transverse fault north of which impermeable Jurassic marls are present.
A propos de la "loi" de recapitulation
Authors: Lehman Jean Pierre
Published: March 2020

The law of recapitulation ("ontogeny recapitulates phylogeny") is discussed. A historical view of its application is given, and several examples of vertebrates are cited to show the limitations and difficulties of its application, as a guide in the study of invertebrates.
Morphogenese et morphographie en paleontologie
Authors: Schmidt Hermann
Published: March 2020

The concepts of ontogeny, morphogeny, and phylogeny on the the one hand and of morphogeny, morphography, and morphology on the other are defined and discussed in terms of their application to paleontology. Recommendations are made concerning the morphogenic versus the purely morphographic description of fossils.
Recherches sur le developpement du squelette chez les madreporaires
Authors: Alloiteau James
Published: March 2020

A suitable technique necessary for study of the ontogeny of fossil madrepores is worked out on the basis of a study of the development of the skeleton (manner of insertion of the radial elements). More than in any other invertebrates, in the madrepores the process of formation of all the elements of the skeleton faithfully reflects ontogeny. It is too soon to establish general laws, but in none of five species studied in detail does the development take place according to the Milne-Edwards law.
Sur l'ontogenese des gasteropodes
Authors: Fischer Paul Henri
Published: March 2020

The ontogenetic development of gastropods is frequently reflected in the shell, which may show successive modifications in the course of the early, mature, and late stages of life. Paleontologists can therefore participate to almost the same degree as zoologists in discussions and conclusions concerning the ontogeny and phylogeny of the gastropods.
Quelques apercus sur la paleontologie evolutive en France avant Darwin
Authors: Bourdier Franck
Published: March 2020

A review of pre-Darwin concepts of evolution in France. As early as 1724, B. de Maillet attempted to explain the formation of rocks and topography by "present causes", forming the basis of the concepts of Buffon, Lamarck, Constant Prevost, and Lyell which assumed a great age for the earth's crust, a premise which was a prerequisite for the hypothesis of evolution. Saint-Hilaire, from 1825-1838, was probably the first to establish the existence of species intermediate between extinct and living forms, and to draw conclusions from this in favor of Lamarck's evolutionary theories. A concept intermediate between immutability and evolution was developed with Agassiz's "progressive creation", the continuous development of more and more perfected forms.
La grotte de la Masque (Vaucluse); station paleolithique avec rhinoceros de Merck
Authors: Lumley Henry de
Published: March 2020

Rhinoceros (Dicerorhinus mercki) foot bones have been found in the Masque cave (Vaucluse, France) along with human remains and Paleolithic artifacts. The bones are described and compared with those of Rhinoceros tichorhinus. Whether they date from the end of the Riss-Wuerm interglacial or the very beginning of the Wuerm could not be determined.
Etude de Ptycholepis bollensis, poisson du Lias superieur de l'Yonne et du Wurtemberg
Authors: Wenz Sylvie
Published: March 2020

Describes the fossil fish Ptycholepis bollensis, on the basis of material from upper Liassic localities of Yonne (France) and Wuerttemberg (Germany), pointing out the evolution of the jaw and reduction of the preoperculum. Relationships with the holosteans and the paleoniscids, particularly the Triassic paleoniscid Boreosomus, are discussed.
Sept coupes a travers le massif de gneiss de l'Aston (Pyrenees de l'Ariege)
Authors: Destombes Jean Paul , Raguin E.
Published: March 2020

Discusses the stratigraphy of Paleozoic formations framing the Aston massif in the Pyrenees of Ariege, France, and the petrographic facies of the gneisses constituting the massif. Seven cross sections are given. The results show a lateral gradation from the Paleozoic formations to the gneisses. The position of the augen gneisses is not yet clear. The gneiss massif as a whole is a relatively flat, northward-dipping structure, which plunges rather abruptly at its north edge. To the west, it forms a gentle syncline.
Les peridotites de Conakry et du Kaloum (republique de Guinee) et leur serpentinisation
Authors: Legoux Pierre
Published: March 2020

Several stages of serpentinization are recognized in the peridotites (dunites with some wehrlitic dunites) forming the substratum of the Kaloum peninsula and the Conakry area in the Republic of Guinea. The rocks are described, the different minerals recognizable under the petrographic microscope are listed, and the problems of serpentinization and the peridotite magma are discussed. The peridotites may represent extensions of the rocks of the Kakoulima massif; if so, they constitute a dike of about the same scale as the Great Dyke of Rhodesia.
Distillations et condensations fractionnees de fluides geochimiques d'origine profonde
Authors: Deicha Georges A.
Published: March 2020

The relations between volatile constituents and water during crystallization of solutions of deep-seated origin are studied in the light of observations on liquid and gaseous inclusions, both primary and secondary. Comparison with the CO 2 /H 2 O equilibrium diagram shows that a homogeneous fluid mixture of CO 2 /H 2 O would break down into a liquid and a gas phase as temperature and pressure decrease. The presence of salts lowers the solubility of the gas in the water but does not seem to have any qualitative effect.
Presence d'un Dictyophyllum dans la flore molteno du Basutoland (Afrique australe)
Authors: Fabre Jean , Greber C.
Published: March 2020

Describes Dictyophyllum ellenbergi n.sp. from the flora of the Molteno beds at Morija and other localities in Basutoland, southern Africa. Other elements of the flora are reported. This is the first known Dictyophyllum occurrence in Africa; it shows that beginning with the Triassic, the floras of the world became unified and argues against the concept of a flora which was unique in Gondwanaland.
Le massif du Folat-Deveze (Herault) et ses satellites filoniens
Authors: Carron Jean Paul
Published: March 2020

The Folat-Deveze massif in Herault, France, has been studied as an example of the emplacement and evolution of a microgranite massif and its satellites, some of which are typically rhyolitic. The zoning can be explained by more or less rapid cooling of a syntectonic magma that seems to have assimilated material at depth which was mainly calcareous. Subsequent recrystallization, probably related with a phase of mineralization, produced the specific petrographic features of the massif, which approach those of true granites.
Metamorphismes et granitisations en liaison avec l'evolution orogenique en Bretagne meridionale
Authors: Cogne Jean
Published: March 2020

The broad outlines of the structure and metamorphic evolution of southern Brittany, France, are outlined. There were two metamorphic cycles, Precambrian and Hercynian, each subdivided into a preorogenic phase of ectinite formation and a synorogenic phase of metasomatic granitization. Differences in the form and structure of the Hercynian massifs represent differences in tectonic conditions at the time of formation. All the granites belong to the same family, from the anatectic granite to the surface microgranites. Three stages can be distinguished in the tectonic history of the Hercynian range on the basis of genetic relationships of the granites.
Sur le Tithonique et le Cretace inferieur dans la region de Huescar (province de Grenade, Espagne)
Authors: Foucault Alain
Published: March 2020

A section about six kilometers northwest of Huescar, in Granada, Spain, shows very steeply dipping Tithonian and Berriasian (Jurassic) limestone beds, succeeded by an essentially marly series with pyritic ammonites dated as lower and upper Valanginian, lower and middle-upper Hauterivian, lower Barremian, and upper Barremian-Bedoulian (Cretaceous). The Cenomanian is also present, but its exact stratigraphic position and relationships have not yet been determined.
Contribution a l'etude du Gothlandien du Sahara; bassins d'Adrar Reggane et de Fort-Polignac
Authors: Remack-Petitot Marie Louise
Published: March 2020

Certain details of the Gotlandian (Silurian) stratigraphy of the Sahara have been clarified on the basis of a rich graptolite fauna collected from borings and sections in the Reggane and Fort-Polignac basins (Algeria). It is established that datable lower Llandoverian beds are absent, and that the sea which invaded the whole Sahara since middle Llandoverian time was epicontinental in character.
Remarques preliminaires sur quelques formations du sud de la Skopska Crna Gora (Macedoine yougoslave)
Authors: Rollet Michel
Published: March 2020

Both metamorphic and sedimentary formations outcrop in the southern part of the Skopska Crna Gora massif north of Skopje (Yugoslavian Macedonia). The metamorphic rocks include amphibolites, biotite-muscovite gneisses, quartzites, and marbles. The sediments are Campanian-Maestrichtian (Cretaceous) limestones transgressive on the metamorphics, and Flysch deposits whose basal beds are Maestrichtian.
La geologie de la region montagneuse du Parnasse-Kiona-Oeta [with discussion]
Authors: Papastamatiou Jean
Published: March 2020

The stratigraphic sequence in the Parnassus-Kiona-Oeta mountain region, central Greece, consists of Triassic to Paleocene limestones and Flysch deposits. Flysch sedimentation began later (in the Lutetian) in the Oeta massif than elsewhere in the ranges. Three bauxite horizons are reported, one of which is a new discovery (in the upper Jurassic, below the Cladocoropsis limestones); the other two occur in the upper Cretaceous and in the Kimeridgian-Tithonian (Jurassic) boundary. The Parnassus-Kiona zone is thrust westward over the Pindus zone and in turn is overthrust by the sub-Pelagonian series.
Observations nouvelles sur la geologie des zones preapulienne et ionienne (Grece occidentale) [with discussion]
Authors: Bornovas Jean
Published: March 2020

New facts relating to the geology of the Paxos and Ionian zones, the outermost zones of the Hellenide structure of western Greece, are reported. In Leukas island, a shaly bituminous dolomite formation has been found to occur below the Cardita guembeli limestones which had previously been thought to be the oldest in Greece. In the eastern part of Cephallonia island there is evidence of transition between the Paxos and Ionian zones, represented principally by the extension of the limestone facies through the Oligocene and the presence of lower Miocene Flysch. The age of the gypsum found in the discordant upper Tertiary deposits is a problem; from their structural position and the nature of the associated limestone breccias, they could be Triassic or even Permian emplaced in two stages by a sort of diapirism.
Esquisse geologique du nord du Peloponese [with discussion]
Authors: Dercourt Jean
Published: March 2020

Describes the sedimentary character and paleogeographic development of the different paleogeographic zones in the northern Peloponnesus region, Greece--the Ionian trough, the Gavrovo-Tripolitza fold, the Pindus trough, the Trapezona submarine topographic high, and the sub-Pelagonian marginal zone. The most striking structural feature is due to the thrusting of the Parnassus-Trapezona zones directly over the Gavrovo-Tripolitza zone, which caused complete shattering of the Pindus trough and ejection of practically all the sediments that filled it over the fold that bordered it on the west.
Zone pelagonienne et zone du Vardar en Macedoine grecque [with discussion]
Authors: Mercier Jacques
Published: March 2020

Describes the stratigraphic sequences and structure of the Pelagonian and Vardar zones in Greek Macedonia. The eastern and western borders of the Vardar zone had a substantially different history of development in the Mesozoic; only after the beginning of the Priabonian (Eocene) did both depositional areas subside together, to be covered by Molasse deposits. It is thus only from Priabonian time that the Vardar zone in Kossmat's sense became differentiated; it is essentially a hinterland trough whose individualization took place after the major Hellenide tectonic movements.
Le niveau marin de Wingles dans le Westphalien B du Pas-de-Calais
Authors: Bouroz Alexis
Published: March 2020

Evidence of a marine invasion has been found in the Westphalian B deposits of the Pas-de-Calais coal district, France. The marine beds are described and named the Wingles horizon. It probably corresponds to the Eisden horizon in the Belgian and Dutch coal basins. The horizon occurs in the midst of a sedimentary series that is barren and partly sandy; it has no direct relation to coal deposition, but throws light on problems of the relations between subsidence and deposition of barren measures.
Fructifications sphenopteridiennes
Authors: Danze Jacques
Published: March 2020

Study of the Carboniferous coal flora of the Nord and Lorraine basins, France, revealed fragments of fertile pteridophyte pinnae exhibiting distinctive features, which belong to five genera of sphenopterids. Five new species are erected for these forms and described--Crossotheca minima, Myriotheca denticulata, Stellatheca parvula, Oligocarpia microscopica, and Dendraena rotundata. Each is smaller than other species of the same genus.
Observations et hypotheses a propos des cailloutis eleves de Saint-Restitut (Drome) et de la Caume (Alpilles, Bouches-du-Rhone)
Authors: Demarcq Gerard
Published: March 2020

Reconstruction of the Pliocene paleogeographic setting of the Saint-Restitut and Caume plateaus, France, shows that the quartzite pebbles found on those heights cannot be Pliocene. It is suggested that they are pre-Plaisancian, dating from the continental period marking the boundary between the Miocene and Pliocene sedimentary cycles.
A propos de l'age de la serie du Miocene de Vence
Authors: Gohau Gabriel , Veslin J.
Published: March 2020

The boundary between Bartonian (Eocene) marls and overlying Miocene marls of the Vence region (Alpes-Maritimes, France) is established precisely. The Miocene marls and associated molasse beds are found to be older than previously believed; the microfauna suggests that they are Aquitanian.
Le "flysch a quartzites" des territoires calabro-lucaniens (Italie meridionale)
Authors: Grandjacquet Claude
Published: March 2020

So-called quartzitic Flysch deposits of the southern Apennines in Calabria and Lucania, Italy, have generally been described as transgressive Eocene deposits. Evidence is here presented to show that they are allochthonous deposits, probably older than Eocene, which have been subjected to low-grade metamorphism and that they are in fault contact with a complex basement of autochthonous Mesozoic and Tertiary formations.
Sur les massifs rhyolitiques pharusiens de la region d'Edembo-Emi Lulu (Ahaggar oriental)
Authors: Guerange Bernard
Published: March 2020

Numerous Pharusian (Precambrian) rhyolitic massifs occur in the Edembo-Emi Lulu area in the eastern Ahaggar mountains, Algeria. The rhyolite surrounds granite cores, with microgranite and ortholeptynite in the intervening zone. The relations between these different rock types can be explained as due to granitization following rhyolitic volcanism.
Stratigraphie du Cambro-Ordovicien du Tassili n'Ajjer (Sahara central)
Authors: Dubois Paul
Published: March 2020

A series of stratigraphic sections in the area between Amguid and Fort Gardel in the Tassili n'Ajjer region (Algeria) of the central Sahara are reported. The erosional unconformity in the Cambro-Ordovician sequence, already reported by a number of authors, appears to be a general characteristic of the sections in this area.
Une table de correspondance granulometrique "dimensions metriques-dimensions phi-temps de sedimentation standards"
Authors: Rosfelder Andre
Published: March 2020

Devises a table for granulometric correlation of sediments, in which metric dimensions, logarithmic expressions of linear dimensions, and settling velocities serve as parameters.
Sur quelques poissons fossiles du Bassin parisien
Authors: Signeux Jeanne
Published: March 2020

Two specimens of fossil fish from the Eocene and Oligocene were recently discovered near Paris. Zapteryx bichuti n. sp. is from limestone of Lutetian (middle Eocene) age in the Civet-Pommier quarry near Saint-Vaast-les-Mello. Notogoneus janeti Priem is from marl of lower Oligocene age in the Lambert quarry near Cormeilles-en-Parisis.
Presence d'une faune marine dans les assises infra-gypseuses (Ludien) de la butte de L'Hautil (Seine-et-Oise)
Authors: Feugueur Leon
Published: March 2020

Two horizons of marine molluscs about 3 m below the upper thick gypsum stratigraphically belong to the Lucine marl. The upper bed is characterized by Potamides perditus, Corbulamya nysti, and Lucina inornata. The lower bed contains Potamides tricarinatus, Cardium granulosum, and Ampullina parisiensis. The presence of two marine incursions among the lagoonal-continental gypsum formations of the Paris area, France, thus is proved. Molluscs at the same stratigraphic horizons were found in boreholes.
Le gite de pyrrhotite de Lacourt (Ariege)
Authors: Debeaux M. , Thiebaut Jean , Weppe Maurice
Published: March 2020

The Lacourt granite, SSE of Saint Girons in the Pyrenees of southwestern France, is a post-tectonic intrusive cutting Hercynian folds. The granite, characterized by a 1:2 ratio between microcline and plagioclase, and by incipiently-chloritized biotite, had contact-metamorphic effects on the country rocks. Granite and the contact-metamorphic aureole in turn are cut by several large, nearly vertical dikes of quartz, one of which is mineralized with pyrrhotite. The age relationships are not clear. The granite and quartz may be late Hercynian, or much younger, or may even represent several successive phases. Thick pyrrhotite emplacements are locally important.
Histoire de l'evolution tectonique de la zone plissee alpine de l'Europe orientale et de l'Asie-Mineure
Authors: Muratov M. V.
Published: March 2020

Recent literature on the tectonic evolution of the Alpine chain in eastern Europe and Asia Minor is reviewed. Two major periods are recognized in describing the tectonic history of the region. The first embraces all the Paleozoic, ending with the Hercynian orogeny, and probably represents an early period of geosynclinal evolution. The second period is represented by a geosynclinal stage, including the Mesozoic and part of the Paleogene up to the end of the Oligocene, and a terminal stage of orogenesis embracing the Neogene and Quaternary. The geosynclinal stage of the second period can be divided into three phases--an early phase embracing the Triassic, lower and middle and perhaps the upper Jurassic and Cretaceous, and characterized by formation of the first Triassic basins on the peneplaned Paleozoic landscape; a second phase, Cretaceous-middle Eocene, characterized by enlargement of the geosynclines and deposition of flysch; and a third phase which began after the end of the middle Eocene, characterized by closing of the geosynclines. Oceanic trenches which developed in the Black Sea and the southern Caspian, Marmara, Aegean, Ionian and eastern Mediterranean seas are recent structures not connected with the geosynclinal evolution and are superimposed on the continental surface of the geosynclinal structures. The arrangement of the depressions and the uplift during the geosynclinal stage were determined by abyssal faults imposed during the Paleozoic. Magmatic intrusions and volcanism developed in the late geosynclinal phases.
Etude du Lutetien inferieur a Boissy-Saint-Leu-d'Esserent (Oise)
Authors: Blondeau A. , Cavelier Claude
Published: March 2020

Stratigraphic, paleontological and sedimentological study of the lower Lutetian limestones and sands exposed in a railroad cut northwest of Boissy, in the Creil area (France), provides more precise information on the lower Lutetian in the region northwest of the Oise river. The three upper beds in the cut represent the transition from the lower to upper Lutetian and are equivalent to Zone III of R. Abrard. The three lower beds are partially dolomitized and represent Abrard's Zone II. Although the boundary between these two zones is dolomitized, it can be determined on the basis of the microfauna. Granulometry of the quartz sand shows a characteristic coarse grain in the lower Lutetian becoming finer in the upper zone.
Les genres Obovothyris et Digonella (brachiopodes). Etude de quelques Digonella et definition de Digonella sinuata nov. sp
Authors: Rollet A.
Published: March 2020

Based on morphological and biometric studies of available specimens of Obovothyris obovata from the upper Bathonian (Jurassic) beds of Bregille and of Digonella 'digona' from the lower Callovian (Jurassic) beds of Maizieres and Tarcenay, several external and internal characteristics are listed showing the differences between the two genera Obovothyris and Digonella. Biometric studies of several Digonella species for population analysis indicate the presence of three distinct population assemblages and the identification of a new species, Digonella sinuata, from the marls of Maizieres and Tarcenay of Callovian age.
Precisions sur la genese de la breche d'Idjil (Fort-Gouraud, Mauritanie). Chronologie de la formation des minerais de fer et de la breche
Authors: Huvelin Paul
Published: March 2020

Idjil breccias are diaclastic, predominantly banded quartzite fragments disposed without apparent stratification or orientation in a silica and iron oxide cement. Intermediate facies occur between the breccias and the encasing banded quartzites and are concordant with the latter. The intermediate facies were probably the source of the elongate pseudo-pebbles which are included in the breccia and which sometimes form pseudo-conglomerates. Three types of contacts are recognized between the banded quartzites and the breccia--progressive, fault, and cataclysmic passage. The formation of the Idjil breccia may have been related to drag folding producing strongly inclined axes affecting the banded quartzites. The Fort-Gouraud iron minerals were probably formed after the breccia.
Extension des series a facies pharusien sur les confins du Tanezrouft oriental (Sahara central)
Authors: Gravelle Michel
Published: March 2020

The Pharusian (Precambrian) conglomerates associated with the I-n-Temeroueline complex have been discovered on the northwestern side of the I-n-Temerouelt hills, thus extending the known limit of the Pharusian trough considerably to the west.
Sur les Alpujarrides occidentales et leurs rapports avec la nappe de Malaga (Andalousie meridionale)
Authors: Boulin Jean
Published: March 2020

New information requires modifications in stratigraphic and structural interpretations of the western Alpujarrid massif of southern Spain. The pre-Triassic Velez-Malaga and Almencar schists of the southwest limb of the Sierra Tejeda-Sierra Almijara anticlinal mountains of the western Alpujarrid massif belong to it, not to the Malaga nappe of unmetamorphosed Devonian to Triassic clastics overriding the schists on the southwest. The nearly-straight schist-dolomite contact from Canillas Aceituno southeast to Maro is the normal stratigraphic contact of the two in the anticlinal limb, not the trace of the contact of a schist nappe thrust upon the dolomite. Relationships of the Alpujarrid formations are shown clearly in a series of transverse stream gorges. The schists are interbedded with tremolite-phlogopite-bytownite metamorphosed dolomite, some beds of which are lenticular in schist. The existence of this older pre-Triassic dolomite had not been suspected. Overlying this series is an alpine facies of slightly-metamorphosed phyllite with gypsiferous beds, and Triassic limestone and dolomite.
Contribution a la connaissance sedimentologique du Callovo-Oxfordien de Normandie et du Haut-Maine
Authors: Poisson Andre
Published: March 2020

Sedimentologic study of upper Callovian and lower Oxfordian (Jurassic) formations in the Villers-sur-Mer, Mamers, and Mans areas of northwestern France is described. Typical marine conditions of the Callovo-Oxfordian for that region were indicated in the Villers-sur-Mer area by dominance of illite and kaolinite, and logarithmic facies granulometry representing quiet but long-continued reworking of materials. At Mamers, conditions indicated are alternation of marine conditions similar to those at Villers-sur-Mer with sandy littoral facies characterized by illite and montmorillonite, a hot dry climate, and tendency toward lagoonal environment.
Les roches volcaniques du Trias inferieur du versant nord des Pyrenees
Authors: Morre Nicole , Thiebaut J.
Published: March 2020

Detailed petrographic and chemical analyses of the principal zones of occurrence show that volcanic rocks interbedded in detrital deposits at the top of the Permo-Triassic section of the north flank of the Pyrenees (France), or occurring in the boundary between the Permo-Triassic and Muschelkalk (Triassic) limestones, are not melaphyres or basalts, but are albitophyres, orthoalbitophyres, and potassic spilites resembling Triassic volcanic rocks of the outer Alps.
Baueria tessieri nov. sp. (Arbaciidae), echinide nouveau du Danien de Popenguine (Senegal)
Authors: Roman Jean , Debant P.
Published: March 2020

Describes Baueria tessieri n.sp. from Danian (Cretaceous) deposits of the Popenguine region, Senegal. Only three species of Baueria have previously been known, all from Eocene localities.
Determination de l'age des granites allochtones de l'Apennin septentrional
Authors: Eberhardt Peter , Ferrara Giorgio , Tongiorgi Ezio
Published: March 2020

Rb/Sr and K/Ar datings of muscovite and biotite place the allochthonous granites of the northern Apennines, north of La Spezia (Italy), in the Hercynian.
Bref apercu sur la geologie de l'Apennin au NW des Apuanes
Authors: Elter Piero
Published: March 2020

The structure, stratigraphy, and orogenic history of a large area of the Apennines northwest of the Apuanes massif (Italy) was studied and it was concluded that a large portion of Tuscany is occupied by an autochthonous platform and by the Tuscan nappe. The nappe, with basal upper Jurassic to middle Cretaceous beds, overlies Oligocene and possibly Miocene formations of the autochthon. Both nappe and the stable platform area are overlain by sedimentary beds of the Ligurian series.
Considerations sur deux coupes a travers l'Apennin septentrional
Authors: Trevisan Livio
Published: March 2020

The tectonics of the Tuscan nappe area of the northern Apennines (Italy) are studied in two traverses across the Apuanes massif. The results suggest that the nappe was positioned by gravity sliding over upper Triassic evaporite beds. Subsequent to the major movement, probably as late as Miocene or Pliocene, faulting in the area formed horsts and grabens which control the present topography.
Description de formations quaternaires semblables a des 'diapirs' dans les alluvions anciennes de la Seine et de la Marne pres de Paris
Authors: Michel Jean Pierre
Published: March 2020

Several quarries southwest of Paris, near the confluence of the Marne with the Seine, display uplifts of the Ludian Eocene marls. Despite their small size, they are termed diapirs in that they tilt and pierce the overlying strata. The Bonneuil quarry shows six diapirs, varying in shape and orientation. They all display steep slopes, convex summits, and severe tilting of overlying Quaternary gravel beds. Some are isolated and others form complexes representing high points of single uplifts. The Trioux a Chelles quarry has 12 diapirs, several cut in vertical section. In addition to being pierced by marl diapirs, the overlying Quaternary gravel beds of both quarries are injected with thin marly veinlike structures. The complex form of the diapirs, interpenetration of the injections and accommodation of overlying strata to uplift suggest that the deformations were produced when the marls were in a softened state.
Sur les ophiolites et les breches associees dans l'Apennin septentrional
Authors: Labesse Bernard
Published: March 2020

Serpentine diabase ophiolite massifs in northern Italy are frequently underlain by heterogeneous breccias. In a study of this association near the village of Pregola it was concluded that the breccias were deposited during explosive activity directly preceding the extrusion of the ophiolites. The microfauna of the underlying breccia included Calpionella alpina, Stenosemellopsis hispanica and Stomiosphaera minutissima and indicate a lower Cretaceous age (probably Berriasian-Valanginian), for the ophiolitic extrusions in the area, rather than the previously accepted upper Jurassic dating.
Application des methodes geophysiques a la tectonique profonde du nord-ouest de la Mediterranee (mer 'hesperienne')
Authors: Glangeaud Louis
Published: March 2020

Geodynamics is the liaison science between physics and geology. Its purpose is to correlate data obtained by geology, geophysics, and experimental physics. The major units of the southern Hesperian sea, derived from geophysical studies and presented at the geological congress in Monaco, are described in relation to the structures of the Provence littoral zone. The M-discontinuity is less than 12 km deep under the Hesperian sea. Deformation of the mantle in the Hesperian region is an indirect consequence of the Oligocene-Burdigalian compaction. The bulging of the mantle revealed by gravimetric anomalies along the coast represents the prolongation of the principal Pyrenean axis.
Sur la systematique des surfaces S et des elements lineaires L dans les tectonites
Authors: Dimitrijevic Milorad D.
Published: March 2020

The principal planar and linear elements of rock structures are defined and classified in order to determine their importance and to eliminate confusions often introduced in published structural studies.
'Lias calcaire' du chainon de Saint-Chinian (Herault); subdivisions stratigraphiques et correlations regionales
Authors: Bernet-Rollande Marie Claire
Published: March 2020

Liassic limestone, ammonite zonation, correlations, France
Principaux resultats geologiques des travaux d'exploration realises par la Societe Nationale des Petroles d'Aquitaine dans le sud-ouest du bassin de Paris
Authors: Sapin Samuel
Published: March 2020

Stratigraphic units (Precambrian-Tertiary), structural features, post-lower Carboniferous paleogeography, France
Sur la nature superficielle et recente du 'substratum volcanique ante Miocene' de la Grande-Terre (Guadeloupe)
Authors: Cavelier Claude
Published: March 2020

Red ferruginous surficial material with bipyramidal quartz crystals, no confirmation of volcanic substratum
L'orientation des mineraux des roches sous l'influence de la contrainte; II, Mineraux monocliniques et micas
Authors: Goguel Jean
Published: March 2020

Feldspar, amphibole, pyroxene, and micas in metamorphic rocks, relationship of orientation to direction of minimum solubility at crystallization; see also this Bibliography Vol. 30, Goguel 2 and Vol. 31, No. 11, 11 E67-09759
Precisions tectoniques sur le flanc sud de l'anticlinal du Grand-Luberon (Vaucluse)
Authors: Anglada Roger , Colomb Emile
Published: March 2020

Miocene overthrusting, France
Etude stratigraphique du Muschelkalk superieur calcaire et dolomitique de Basse-Provence occidentale entre Bandol et Hyeres (Var)
Authors: Caron Jean Paul H.
Published: March 2020

Middle Triassic sections, lithology, four time-stratigraphic units, biostratigraphy, comparison with the Lorraine Muschelkalk, France
Observations complementaires sur la couverture triasique et son substratum dans la region occidentale des Vosges; nouveaux forages dans les bassins de Vittel, Contrexeville et Martigny-les-Bains; resultats de la campagne de recherche hydrogeologique 1961-1966
Authors: Minoux Georges
Published: March 2020

Seven measured lithologic sections, aquifers, hydrostatic-thermal-piezometric data, France
Etude de quelques filons clastiques intraformationnels du flysch albo-aptien des zones externes du Rif (Maroc)
Authors: Andrieux Jean
Published: March 2020

Injection of plastic sandy material, tectonic distension early in diagenesis, Cretaceous
Evolution paleogeographique et structurale de la region de Chellala-Reibell (departements de Medea et Tiaret, Algerie)
Authors: Caratini Claude
Published: March 2020

Jurassic-Miocene formations, relationship to Saharan Atlas trough
Algue et foraminiferes viseens du bassin de Laval (Massif armoricain)
Authors: Pelhate Annik
Published: March 2020

Systematic descriptions, new taxa, lower Carboniferous, France
Sur quelques especes nouvelles de Bryozoaires de l'Ordovicien superieur de la Montagne-Noire
Authors: Boulange Marie Francois
Published: March 2020

Six species of bryozoa are described from the upper Ordovician of the south flank of Montagne Noire in southern France: Crepipora vesiculosa n. sp., Atactoporella irregularis n. sp., Cyphotrypa magna n. sp., Heterotrypa magnopora n. sp., Trematopora hirsuta n. sp., and Enallopora lineata n. sp.
Presentation des maquettes de la premiere carte hydrogeologique normalisee a grande echelle realisee en France; feuille de Douai au 50,000e
Authors: Margat Jean , Ricour Jean
Published: March 2020

The Douai sheet of the hydrogeologic map of France (1:50,000) prepared by the Bureau de Recherches Geologiques et Minieres (Paris), with the collaboration of the University of Lille, inaugurates a series of large-scale hydrogeologic maps of France. The Douai quadrangle of northeastern France was chosen as the initial sheet because of the optimum status of all pertinent data as compared with other quadrangles in the nation: particularly the nearly completed systematic inventory of geologic and hydrogeologic information from government and private sources, a suitable base map, and the nature of the geology of the area. At this time other areas would provide information for a scale not greater than 1:100,000. The issue of this sheet is intended to elicit suggestions for further improvement in hydrogeologic mapping.