bluuebunny/crossref_metadata_2025 huggingface dataset:
La faille de l'Arve au viaduc Sainte-Marie (Les Houches, Haute-Savoie)
Authors: Deicha Georges A.
Published: March 2020

A polished surface covering some 30 square meters of Carboniferous rock exposed in the vicinity of the Sainte-Marie viaduct in the Aiguilles Rouges massif, Haute-Savoie, France, represents a plane of the Arve fault along which renewed movement had taken place. The absence of mineralization along the fault indicates that the recurrent movement was post-Alpine.
La structure du nord-ouest de l'Argentine avec quelques reflexions sur la structure des Andes
Authors: Picard Leo
Published: March 2020

With the exception of a brief period of folding in the upper Tertiary, no tangential orogenic movements have taken place in the Andes of northwest Argentina since the beginning of the Carboniferous. Formation of the ranges of the Andes was due to vertical crustal movements, particularly Plio-Pleistocene epeirogenic uplift.
Contribution a l'etude des schistes, calcschistes et grauwackes d'Angers; III, La faune des schistes bleus des fours a chaux d'Angers
Authors: Pillet Jean
Published: March 2020

The Devonian formations in the eastern end of the Saint-Julien-de-Vouvantes basin in the Angers region, France, consist of a continuous series of lower Siegenian to Emsian beds. The fauna (trilobites and brachiopods) recently discovered in blue shales within the sequence confirms the presence of the middle Siegenian zone.
Queraltina, nouveau genre de foraminifere de l'Eocene pyreneen
Authors: Marie Pierre
Published: March 2020

Describes several new species of the new foraminiferal genus Queraltina from Eocene deposits of the Pyrenees. It belongs to the Anomalinidae and is considered ancestral to Oligocene genera such as Planulinella, Kelyphistoma, and Almaena.
Elie Gagnebin, 1891-1949
Authors: Lugeon Maurice.
Published: March 2020

Biographic sketch and list of writings of the Swiss geologist Gagnebin, who specialized in the geology of the Romanche and Chablais Prealps.
Sur un nouveau genre de bryozoaires du Lutetien du bassin de Paris; Paratretocycloecia parisiensis n.g., n.sp
Authors: Buge E. , Balavoine P.
Published: March 2020

Describes the bryozoan Paratretocycloecia parisiensis from the Lutetian (Tertiary) of the Paris basin, France. This is the first ovicellular heteropore reported from the Paris basin.
Nouvelles observations sur les sables alveolaires
Authors: Baudoin Rene
Published: March 2020

The behavior of alveolar sands under foot affords information on their structure. A "sand drawer" designed for taking undisturbed samples, here described in detail, is an aid in making observations of this behavior. The sands are divided into two categories: firm sands, either solid under foot (compact sands) or elastic (containing bubbles below a firm crust 10 cm or more in thickness); and yielding sands, either thixotropic (yielding only when saturated) or lacking in resistance, both wet and dry. Structural characteristics of recent and fossil alveolar sands are discussed, with data on localities where each type may be found. The evolution of alveolar sands is influenced by the presence of the animals inhabiting them. In fossil form they are evidence of the high-tide limit of former seas.
Conrad Kilian (1898-1950)
Authors: Bourcart Jacques
Published: March 2020

A tribute to the work of Conrad Kilian, one of the outstanding figures in the geologic exploration of north Africa.
Sur la presence d'inocerames dans un niveau postmaestrichtien pres d'Ain-Fakroun (Algerie)
Authors: Drooger C. W. , Voute C.
Published: March 2020

Study of microfaunas associated with pelecypods belonging to the genus Inoceramus found in Cretaceous deposits near Aien-Fakroun (Algeria) shows that the latter sometimes lived on in Algeria beyond the Maestrichtian. Since similar occurrences have been noted in other localities in north Africa and in Anatolia (Turkey), Inoceramus cannot be used in these regions to define the upper limit of the Maestrichtian. Exact relations between the north African and Anatolian forms have not been worked out, but in all cases they seem to be representatives of the I. regularis group.
Contribution a la stratigraphie du Keuper du Jura
Authors: Bonte Antoine
Published: March 2020

Defines the stratigraphic subdivisions of the Keuper (Triassic) series of the Jura region, France, on the basis of a study of numerous borings and extremely detailed mapping. Special attention is called to a dolomite, averaging 10 m thick, which is an important key zone in the upper Keuper, and to other diagnostic features.
L'orogenese de l'Atlas tunisien
Authors: Castany Gilbert
Published: March 2020

The Atlas mountains of Tunisia have undergone a long and slow evolution. East-west trending structures were developed during Mesozoic deformation. Tertiary (pre-Burdigalian) movements heralded the major Plio-Pleistocene diastrophism, which continued until the end of the Pleistocene and produced folds with northeast-southwest trending axes. In recent Quaternary times, isostatic readjustment has produced depressions, both parallel and at right angles, which are superposed on the old fractures of the basement complex.
Observations sur la structure microscopique de quelques houilles limniques
Authors: Bergounioux Frederic Marie , Doubinger Jeanne
Published: March 2020

Microscopic study of the limnic coals of the Decazeville basin, France, reveals differences between these and paralic coals, which result from the difference in size of their respective depositional basins. Classification of the elements of the limnic coals according to decreasing density is impossible; because of the small dimensions of the lacustrine depositional basins the most diverse elements are found mixed in the limnic coals, giving them a characteristic aspect.
Les galets des cordons littoraux actuels en Norvege meridionale
Authors: Berthois Leopold , Berthois Catherine
Published: March 2020

The gravels of present-day boulder trains of the coasts of southern Norway have been studied and compared with material from the coast of Brittany (France). The former have been derived from Quaternary deposits whose components were subjected to a long previous history, whereas the latter was recently derived from rock. The differences are reflected in the coefficients of dissymmetry and flattening. Moreover, different hydrodynamic conditions influence deposition in the two regions.
Les liogryphees jurassiques de l'est du bassin parisien; II, Liogryphees du Bajocien
Authors: Charles Robert P. , Maubeuge P. L.
Published: March 2020

Describes three species of Liogryphaea from the eastern Paris basin, L. oblonga n.sp., L. lampada, and L. ampla n.sp. All three are limited to the Bajocian, and evolved from L. phaedra.
Decouverte d'un rostre chez Stenodictya lobata Brgt. (paleodictyoptere stenodictyide) et le probleme des protohemipteres
Authors: Laurentiaux Daniel
Published: March 2020

Describes a rostrum in the paleodictyopteran Stenodictya lobata from Carboniferous deposits of the Commentry region, Allier, France, which is structurally similar to that in Eugereon boeckingi. Comparison of the wing venation of Eugereon and Dictyoptilus suggests that the former should be assigned to the Dictyoptiloidea, which were derived from the Stenodictyidae.
Contribution a l'etude vulcanologique et morphologique de l'Islande sud-ouest
Authors: Bout Pierre
Published: March 2020

Volcanologic and geomorphic studies in southwestern Iceland show that (1) the basalt breccias of the palagonite deposits exhibit striking analogies with those of Velay (Haute-Loire, France), and similarly seem to be of directly eruptive origin; (2) the fissured domes of certain basalts are the effect of dilatation during cooling; (3) the topography is controlled not only by volcanism but also by four systems of fractures; (4) present eolian action is due to winds from the north and northeast (glaciers) or south and southeast (Atlantic Ocean); (5) dreikanter basalt blocks are now being formed only on the south coast, those in the interior having been formed earlier in times of more extensive glaciation; (6) polygonal soils were formed by shrinkagefollowing pressures developed by winter ice, the size of the polygons depending on whether segmentation was easy (small polygons) or difficult (large polygons).
Mastodonte de Bourg-Saint-Bernard et erosions miocenes dans le bassin sous-pyreneen
Authors: Astre Gaston
Published: March 2020

The discovery of a mastodon molar at Bourg-Saint-Bernard supports the conclusion that the Stampian deposits of the region were eroded during the Miocene, and therefore that the Miocene in the French Pyrenean basin was deposited unconformably (and sporadically) on the Stampian, in contrast to the normal depositional sequence of the Miocene of Gascony.
Sur la presence d'amas gabbro-dioritiques en bordure des migmatites du versant SW du Canigou (Pyrenees orientales)
Authors: Guitard Gerard
Published: March 2020

Describes gabbro-diorite masses on the southwest slope of the Canigou in the eastern French Pyrenees. Such basic masses are common in the transition zone of the migmatites in this region; they are older than the late miggmatitic granites in the transition zone and are always associated with marble. They are considered contemporaneous with the principal phase of migmatization (brecciation), and are the result of replacement at contacts with the marble. Chemical analyses are included.
Note sur le gisement uranifere de Saegmuehlen, pres Sulzburg (Foret Noire); sa place parmi les gites uraniferes europeens
Authors: Geffroy Jacques , Lenoble Andre
Published: March 2020

Describes a uraniferous locality in an old cobalt mine at Saegmuehlen, near Sulzburg in the Black Forest, Germany. The mineralization, which seems to be related to the granitic massif south of the Black Forest, is in the form of thin veinlets of pitchblende accompanied by loellingite and sulfides of Pb, Cu, Zn, Fe, and Sb in a quartz-carbonate gangue. Among European uraniferous deposits, there appears to be a progressive gradation from the Central Massif type, intragranitic and dominantly epithermal, to the central European type, located at the periphery of granite batholiths and dominantly mesothermal. Both types are related to Hercynian (Paleozoic) mineralization; the former seems to represent a late-stage product, derived from solutions originating deep in batholiths, whereas the latter was derived from more superficial zones.
Microfaunes pelagiques (calpionelles, fissurines) dans le NE de la Berberie
Authors: Colom Guillermo , Castany Gilbert , Durand Delga Michel
Published: March 2020

Describes the principal occurrences of pelagic microfaunas in the northeastern Barbary region--in the Numidian range of northern Constantine, Algeria, and in the eastern Atlas range in southern Tunisia. Study of their geographic and stratigraphic distribution indicates that pelagic Alpine microfaunas freely invaded the region south of the now uplifted Paleozoic massif of the Kabylia region during the latest Jurassic and earliest Cretaceous.
Sur cinq genres nouveaux de madreporaires post-paleozoiques
Authors: Alloiteau James
Published: March 2020

Describes five new genera of Mesozoic madrepores, four of which are founded on new species: Pseudaulina lefranci, Thalamocoeniopsis ouezensis, Septastraeopsis gigouti, and Carcicocaenia pfenderae. The fifth, Kobymeandra, is based on Latimaeandra corrugata.
Les grands traits structuraux de la Tunisie
Authors: Castany Gilbert
Published: March 2020

The present structure of the Atlas ranges of Tunisia is the result of a long slow evolution marked by a series of deformations and pulsations in which the sedimentary cover and the basement complex reacted relatively independently. The basement structure nevertheless played a role in determining the regional development of major fold structures in the sedimentary cover.
Emmanuel Jacquin de Margerie (1862-1953)
Authors: Fourmarier Paul
Published: March 2020

Biographic account and list of writings of the French geologist Emmanuel de Margerie, who contributed extensively to both geology and geography.
La limite entre les etages aptien et albien dans la region de Saint-Dizier (Haute-Marne)
Authors: Bertrand Louise
Published: March 2020

On the basis of paleontologic and sedimentologic data, the boundary between Aptian and Albian (Cretaceous) formations of the Saint-Dizier region, France, is placed between the Gargasian white sand and the Albian green sand.
A propos des organes de Pander des trilobites
Authors: Hupe Pierre
Published: March 2020

Reviews present knowledge of the pleural protuberance of trilobites. An associated cavity probably did not exist; the opening probably represents a thin and therefore unpreserved area of tegument which acted as a danger alarm, being sensitive to outside influences while the animal was rolled up.
Un complement des cartes geologiques; les cartes geomorphologiques
Authors: Tricart Jean
Published: March 2020

Detailed geomorphic maps showing the nature and evolution of land forms should be of great use, as a supplement to geologic maps, in the fields of public works or conservation. The geomorphic map of the Senegal delta, French West Africa, is discussed as an example of the application of such maps.
Morphotectonique de la marge continentale nord-africaine
Authors: Bourcart Jacques , Glangeaud Louis
Published: March 2020

A morphotectonic study of the continental shelf off north Africa clearly demonstrates the effects of Quaternary deformation. The continental flexure is well-defined along part of the Algerian coast. Submarine valleys were produced by erosion or collapse prior to the folding.
Permanence paleogeographique et faunique de la cote ouest de la Nouvelle Caledonie
Authors: Pomeyrol Rene
Published: March 2020

The paleogeography and faunas of the west coast of New Caledonia have been remarkably constant. This constancy is considered evidence of the permanence of the Pacific Ocean as a whole.
Sur des empreintes vegetales du Continental intercalaire de Dibella (territoire du Niger)
Authors: Boureau Edouard
Published: March 2020

Describes four new species--Podocarpites? saharianum, Laurophyllum gadilhei, Cinnamomoides faurei, and C. tchadense--from Cretaceous beds in the Continental intercalaire formation near Dibella, French West Africa. This angiosperm flora is of a quite different type than other floras known from the continental sequence of the Sahara.
Sur l'origine de Microcodium [with discussion]
Authors: Cuvillier Jean
Published: March 2020

Supports the viewpoint of an organic origin for the controversial form Microcodium, found in marine and lacustrine sediments from basal Cretaceous to Miocene. It is considered an alga whose exact classification has yet to be determined.
Les cirripedes acrothoraciques echinicoles
Authors: Saint-Seine Roseline de
Published: March 2020

The genus Rogerella is divided into two species, R. lecointrei and R. mathieui n.sp., and compared with the genus Zapfella.
Un nouveau genre d'ostracode du bassin d'Aquitaine, Falunia girondica, n.g., n.sp
Authors: Grekoff Nicolas , Moyes J.
Published: March 2020

The new ostracod genus and species Falunia girondica, here described, is a local form whose occurrence is limited to Miocene marine beds of the Aquitaine basin, France.
Gites de cuivre de type pneumatolytique et pegmatitique dans les orthoamphibolites du sud de Madagascar
Authors: Kovenko Vladimir
Published: March 2020

The copper deposits of southern Madagascar are of pegmatitic or, more frequently, pneumatolytic origin. The Besatrana (quartz vein), Andokaolo and Vohitany (pegmatite), and Besakoa (pneumatolytic) deposits are described. The last is the largest, with pyrite, sphalerite, and traces of molybdenum and lead associated with chalcopyrite. All occur in orthoamphibolites interfingering or cutting rocks of the Precambrian Vohibory series. The copper deposits of the Karroo system are probably secondary concentrations.
Contribution a l'etude des spongiaires permiens du Djebel Tebaga (extreme sud tunisien)
Authors: Termier Henri , Termier G.
Published: March 2020

As part of a revision of Permian faunas of the Tebaga massif in southernmost Tunisia, the principal sponges are described. Calcispongia, Demospongia, and Hyalospongia thrived in a very special environment. The species are related to faunas of Sicily, the United States, and the Far East. Many genera represented in the Tebaga fauna have not yet been recorded from beds older than Triassic or even Liassic. Two new genera are created, Polyedra and Tebagaspongia.
Caractere de la deformation alpine dans les schistes cristallins du massif du Mont-Blanc
Authors: Belliere Jacques
Published: March 2020

Field observations and microscope analyses of crystalline rocks of the Mont Blanc massif (France) lend support to the concept that Alpine deformation was continuous in space and regional in scale. The Mont Blanc and Aiguilles Rouges massifs are both part of the same Prealpine basement, which became separated by Alpine deformation. The general structural trend of the Aiguilles Rouges massif is north-south, but that of the Mont Blanc massif more closely corresponds to the Alpine trend. This change in orientation is directly related to mylonization of schistose crystalline basement rocks, under Alpine stresses.
L'ile Bach Long Vi (golfe du Tonkin)
Authors: Saurin Edmond
Published: March 2020

The island of Bach Long Vi in the middle of the Gulf of Tonkin (South China sea) is underlain by late Tertiary continental sandstones, containing lenses of lignitic material, which indicate that submergence of the gulf was relatively recent. The island is bordered by Quaternary marine terraces (at elevations of 2, 4, and 10 meters) and beveled on top, at 55 meters, by a remnant of a more extensive peneplain.
Ostracodes lacustres du Bathonien du Poitou (bassin de Paris)
Authors: Bernard Francois , Bizon J. J. , Oertli H. J.
Published: March 2020

Summarizes the stratigraphy of middle Jurassic sections exposed in the Creuse, Gartempe, and Vienne valleys, Poitou region, France, with special reference to the position of Bathonian brackish zones, and describes eleven species of ostracods from beds representing lacustrine to mesohaline environments. The ostracods resemble those of the upper Malm and exhibit advanced evolutionary features. Several new species are represented in the fauna.
Sur la constitution geologique du K2 (8 611 m) dans la chaine du Karakoroum (Himalaya)
Authors: Desio Ardito , Zanettin B.
Published: March 2020

K2 (Mount Godwin Austen) in the Karakoram range, north Kashmir, is composed essentially of a metamorphic series (mainly the "K2 gneiss"), consisting of sediments that were subjected first to regional metamorphism and later to feldspathization as a result of intrusion of the neighboring Baltoro-Panmah granite batholith. The structure is dominantly that of an anticline trending south-southwest-north-northeast and cut by a principal fault passing close to the summit. Two other faults appear to be "grafted" on the main fault.
Progres dans la connaissance du Quaternaire de Casablanca (Maroc)
Authors: Biberson Pierre , Lecointre G.
Published: March 2020

Study of marine molluscan faunas from Quaternary deposits of the Casablanca region, Morocco, indicates two episodes during which the waters of the sea were cold, one during the Roman regression, the other during the Tyrrhenian transgression. The evolution of prehistoric industries exhibits a close relationship to fluctuations of the associated shore lines.
Etude complementaire du gisement quaternaire de Cergy (Seine-et-Oise)
Authors: Chretien Roger
Published: March 2020

He results of granulometric analyses of Quaternary sediments of the classic archeologic site in the Cergy area, Seine-et-Oise, France, serve as a point of reference for determining the chronology of the sediments.
Precisions sur les deformations tectoniques dans le S du dome de la Mure (Isere)
Authors: Sarrot-Reynauld Jean
Published: March 2020

Following an outline of the different tectonic phases that have affected the Variscan range and discussion of the relations between the La Mure dome (Isere, France) and other crystalline massifs of the region, a series of sections is described which shows the details of folding in the sedimentary cover. The Seneppy massif bordering the dome on the west is shown to be autochthonous (as is the Connexe to the east); together with the dome it forms a tectonic unit with regard to both style and origin.
Lithoporella elliotti nov.sp., melobesiee nouvelle du Jurassique superieur des monts des Oulad-Nail, Atlas saharien (Algerie)
Authors: Emberger Jacques
Published: March 2020

A description of a new calcareous alga belonging to the family Melobesiae, Lithoporella elliotti, from upper Jurassic deposits of the Oulad Naiel mountains in the Saharan Atlas range of Algeria.
Pierre Teilhard de Chardin (1881-1955)
Authors: Piveteau Jean
Published: March 2020

A biographic sketch of the French vertebrate paleontologist Teilhard de Chardin, with a bibliography of his writings (230 items).
Sur l'importance et les caracteres du paleovolcanisme en Limousin septentrional (Massif Central francais)
Authors: Chenevoy Maurice
Published: March 2020

Amphibolites among the crystalline schists of northern Limousin, France, represent an original spilite-keratophyre association. A major volcanic episode contemporaneous with geosynclinal sedimentation can now be considered well established. Calcareous facies are essentially absent in the schist complex; the only marble known in the region may be the metamorphic product of sediments deposited in an environment locally enriched in lime as a result of extrusion of particularly calcic lavas and tuffs.
Etude des gneiss et granites migmatiques de Kaysersberg, des Trois-Epis et de Ribeauville dans les Vosges
Authors: Millot Georges , von Eller J. P.
Published: March 2020

The migmatitic areas of the Alsatian flank of the central Vosges massif have been mapped geologically. The Kaysersberg facies consists of banded gneisses and gneissic granites, with occasional basic inclusions. The more acid facies of the Trois-Epis, Alspach, and Ribeauville migmatites are described; these appear to be younger.
Decouverte et description d'une nouvelle espece de Productus du Carbonifere de l'Iran, Productus pruvosti nov. sp
Authors: Nazemi Fakhri
Published: March 2020

Describes a new rare species of Productus, P. pruvosti, from a Carboniferous locality in Iran. The shell shows a curious superposition of three layers of different character. In shape and reticulation, the apical region resembles that of semireticulate brachiopods. The radial ribs tend to disappear, and the general morphologic aspect approaches that of Permian P. horridus and more closely that of P. wishnu.
Essai sur l'evolution paleogeographique et le developpement tecto-orogenique d'un systeme geosynclinal; le secteur grec des Dinarides (Hellenides) [with discussion]
Authors: Aubouin Jean
Published: March 2020

The Mesozoic and Tertiary history of the Hellenides (Greek sector of the Dinarides) is traced. Three stages of development of the Hellenic geosyncline are recognized--a preliminary stage in which a system of ridges and troughs was developed; the geosynclinal stage proper, first open, then filled; and a terminal stage of orogenesis and related secondary movements.
Recherches sur les mineraux lourds du littoral du golfe de la Napoule et du golfe Juan
Authors: Duplaix Solange , Nesteroff V. D.
Published: March 2020

Study of terrigenous coastal sands from the Napoule and Juan gulfs on the coast of southern France shows that during transport and deposition the light and heavy fractions were sorted hydraulically. In the Juan gulf, the two fractions have been carried in opposite directions, the light components being derived from the west and the heavy minerals from the east.
Donnees nouvelles sur l'Antecambrien dans l'ouest de la France; Pentevrien et Brioverien en baie de Saint-Brieuc (Cotes-du-Nord)
Authors: Cogne Jean
Published: March 2020

The ophiolitic Erquy series, representing the base of the Brioverian in Brittany, France, rests discordantly on a crystalline complex of granite-gneiss, amphibolites, and dioritic migmatites. Later metamorphism has affected both basement and cover and tends to obscure their relationships. The name Pentevrian is proposed for the pre-Brioverian complex at the base of the series (represented by arkoses and conglomerates in places). Its exact age is not known, as is also the case with the lower Brioverian which also is probably Precambrian.
Le Tyrrhenien dans le cadre de la chronologie quaternaire mediterraneenne
Authors: Bonifay Eugene , Mars P.
Published: March 2020

The terminology for Quaternary marine formations of the Mediterranean is in a confused state at present. Although the terms Milazzian and Monastirian have had to be abandoned, shore lines corresponding to these terms exist at numerous places. It is proposed that the general term Tyrrhenian be used for these, and further subdivided into Paleotyrrhenian, Eutyrrhenian, and Neotyrrhenian where more precise dating is possible.
La serie stratigraphique de la region de Kiffa (Mauritanie orientale)
Authors: Bense Claude
Published: March 2020

Describes the stratigraphic sequence in the Kiffa region of eastern Mauritania, where no systematic study has previously been made. The formations are attributed to the Infracambrian, Cambrian, and Ordovician.
Esquisse geologique sur le massif cristallin de l'Air (Niger)
Authors: Raulais Maurice
Published: March 2020

The Aier crystalline massif, west Africa, is composed of folded, metamorphosed, and granitized Precambrian formations forming an isolated massif which rises above younger sedimentary formations of the adjacent area. The massif is an elongate horst trending north-south between faults 180 kilometers apart. The two oldest series in the complex are separated by a major unconformity; they correspond to the Suggarian and Pharusian of the Ahaggar mountains. The topography has been rejuvenated by large granite intrusions and recent volcanism. Tin, tungsten, and columbite deposits are being exploited in the massif. Its structure is considered favorable to the possible occurrence of uranium and petroleum in the periphery.
Distinction de deux series dans le Paleozoique du Tagant occidental (Mauritanie)
Authors: Delpy Jacques
Published: March 2020

Two series are distinguished in the Paleozoic formations of the western Tagant plateau region, Mauritania, separated by an erosional unconformity which may be regional--the Tijigja series (Ordovician?) and the Kasr el Barka series (Gotlandian-Devonian?).
Position systematique des Kazacharthra (arthropodes) d'apres de nouveaux materiaux des monts Ketmen et Sajkan (Kazakhstan SE et NE)
Authors: Novozhilov Nestor I.
Published: March 2020

Arthropods of the order Kazacharthra are classified as crustaceans belonging to the branchiopod subclass. Diagnostic characteristics of the order and of the genus Almatium are completed, and Jeanrogerium sornayi n.sp. is described on the basis of material from Jurassic localities in southeastern and northeastern Kazakhstan, USSR.
Observations sur les traces des organismes fouisseurs dans l'Ordovicien normand
Authors: Dangeard Louis , Rioult M.
Published: March 2020

Ordovician sediments in cores from different borings in lower Normandy, France, show evidence of the activity of burrowing organisms. Several types of traces and burrows are described. They are indicative of slow and calm sedimentation, otherwise either the animals could not live or the traces would have been mechanically obliterated after formation. They can also be used to determine tops and bottoms of beds and to furnish information on compaction of sediments. They are not a good criterion of depth because they are found over a wide range.
Les apports terrigenes dans les recifs du Sequanien du sud de La Rochelle (Charente-Maritime)
Authors: Lafuste Jean
Published: March 2020

The amount of detrital material ("quartz index") in the principal pre-reef, reef, and post-reef beds in the Sequanian (Jurassic) section south of La Rochelle, France, was determined quantitatively and the results are presented graphically. The dimensions and mineralogy of the detrital grains were also studied. No noticeable differences were found in the clastic material from reef and non-reef deposits. It is therefore concluded that reef growth, which began and ended abruptly, was not conditioned by variations in the material being supplied to the depositional basin, but by modifications of the physicochemical environment.
Sur la composition de quelques sables coquilliers a foraminiferes des lagons de la Nouvelle-Caledonie
Authors: Gambini Andree
Published: March 2020

Fragments of molluscan shells make up more than 50 percent of marine foraminifer-bearing shelly sands from two lagoonal localities near a fringing reef in Saint-Vincent bay, New Caledonia. The most abundant foraminifer is Marginopora vertebralis. Fragments of algae and corals together constitute only about 20 percent, despite proximity to the reef.
Granuloclassement vertical (graded bedding) et figures de courants (current marks) dans les calcaires purs; les breches de flanc des sillons geosynclinaux
Authors: Aubouin Jean
Published: March 2020

Describes graded bedding and current marks in microbrecciated limestones that are free of any terrigenous material. These microbreccias have been deposited on the flanks of geosynclines. It is thus shown that the existence of turbidity currents is independent of the nature of the material transported, as should be expected. From a stratigraphic point of view, the interpretation of these microbreccias requires great caution. They are monogenic, rather than polygenic. Examples are cited from the Senonian (Cretaceous) limestones of the Ionian trough (Greece).
Contribution a l'etude du Paleozoique nord-aquitain
Authors: Bugnicourt Daniel , Dalbiez F. , Dufaure P.
Published: March 2020

Several exploratory borings for oil in the north Aquitaine basin, France, have reached and penetrated the rocks underlying the Permo-Triassic and Jurassic formations. In places the substratum consists of metamorphic formations, in others of Paleozoic formations that can be dated by macrofaunas.
Une klippe de Cretace inferieur dans l'Oligocene du bassin de Forcalquier
Authors: Goguel Jean
Published: March 2020

Outcrops of lower Cretaceous deposits at the base of the continental Oligocene beds in the Forcalquier basin (Basses-Alpes, France), apparently overlying Cenomanian (middle Cretaceous) deposits, are described. Their occurrence is probably due to superfical gravity sliding of material from elements of a pre-Oligocene relief which has subsequently been obliterated.
Facies de l'Aptien et de l'Albien dans les Baronnies
Authors: Blanc Jean J.
Published: March 2020

The first results of sedimentologic investigations of Aptian-Albian (Cretaceous) blue marls of the so-called Vocontian trough in the Baronnies region, France, are presented. Their stratigraphic distribution and glauconitic sandstone intercalations are described. The marls appear to have been deposited in shallow epicontinental seas, generally in the open sea, at different depths (mean depth, some hundreds of meters or less); there was no "Vocontian trough." Deposition occurred under reducing conditions and was accompanied at intervals by submarine landsliding and slumping related to oscillations that were responsible for introduction of the clastic elements of littoral origin.
Connaissances actuelles sur l'ontogenese des Archaeocyatha
Authors: Debrenne Francoise
Published: March 2020

A critical review of studies relating to archeocyathids which have been published since 1910 and a summary of present knowledge concerning their ontogeny, with special reference to its significance for interpreting their morphogeny and phylogeny.
Reflexions sur quelques traits de la structure cephalique chez les larves de trilobites
Authors: Hupe Pierre
Published: March 2020

The cephalic structure of trilobite larvae is discussed, with reference to segmentation and various aspects of the evolution of trilobites.
Quelques precisions sur les formations spilitiques de la couverture triasique du massif cristallin du Grand-Chatelard (Savoie)
Authors: Parjadis de Lariviere Nicole
Published: March 2020

The hitherto unstudied Triassic spilites of the south border of the Grand-Chatelard crystalline massif, France, are described in detail. It is concluded that they represent a lava flow of the composition of basanite, whereas the spilites north of the massif are pyroclastics and tuffs intimately associated with arkoses and limestones. The two spilitic formations may have originated from the same crater.
Sur un recif actuel, le banc des Hermelles de la baie du Mont-Saint-Michel; quelques renseignements documentaires
Authors: Dollfus Robert Ph
Published: March 2020

Presents maps of a modern reef constructed by polychaete annelids (Sabellaria alveolata) in the Mont-Saint-Michel bay, France, as it was in 1921, showing its relation to the shoreline and to the low-tide mark.
Observations sur l'Aptien et sur l'Albien des environs de Puget-Theniers (Alpes-Maritimes)
Authors: Thomel Gerard
Published: March 2020

Gargasian and Vraconian (Cretaceous) faunas are reported from beds above and below the unfossiliferous black marls in the vicinity of Puget-Theniers on the southern margin of the Barrot dome, France. The black marls therefore are not Aptian, but Albian in age.
Le Carbonifere marin du bassin de Fort-Polignac
Authors: Dubois Paul
Published: March 2020

A synthesis of cross sections of the marine Carboniferous of the Fort-Polignac basin in the eastern Sahara (Algeria) reveals three important stratigraphic facts--the presence of Tournaisian deposits, probably lower Tournaisian, below transgressive upper Tournaisian beds; the simultaneous character of the upper Tournaisian transgression throughout the whole basin; and discontinuity of sedimentation between the (lower?) Namurian and the Westphalian which is tentatively referred to the general hiatus between the lower and the middle-upper Carboniferous.
Contribution a l'etude des conodontes du Sahara (bassins de Fort-Polignac, d'Adrar Reggane et du J. Bechar); comparaison avec les Pyrenees et la Montagne Noire
Authors: Remack-Petitot Marie Louise
Published: March 2020

Study of the rich conodont faunas recovered from numerous borings and sections in the Fort-Polignac, Reggane, and Bechar basins (Algeria) in the Sahara and of faunas from the Pyrenees and the Montagne Noire in France demonstrates the value of conodonts in Paleozoic stratigraphy. They have corroborated the macrofaunal evidence. The conodont faunas permitted identification of different stages of the Carboniferous in the Paleozoic sections of the three basins in the Sahara, and precision of the stratigraphy of Famennian and other Devonian deposits of the Pyrenees and the Montagne Noire. The study shows the wide horizontal and relatively narrow vertical range of the conodonts.
Madreporaires du Portlandien de la Querola pres d'Alcoy (Espagne)
Authors: Alloiteau James
Published: March 2020

Describes madrepores (including one new genus and seven new species) from Portlandian (Jurassic) deposits of the Querola ravine near Alcoy, Spain.
Observations nouvelles sur le Jurassique inferieur et moyen dans les Cordilleres betiques sur la transversale de Malaga (Andalousie, Espagne)
Authors: Dubar Gonzague , Peyre N. , Peyre Y.
Published: March 2020

A study of the stratigraphic and structural relationships of 23 lower and middle Jurassic fossiliferous localities, most of them reported for the first time, in the Betic cordilleras of the Malaga region, Spain. The distribution of the various paleontologically defined horizons in the different structural units is summarized in a table.
Le Cretace superieur en Grece
Authors: Aubouin Jean , Godfriaux Ivan , Lys Maurice , Marie Pierre
Published: March 2020

A stratigraphic and paleontologic (particularly micropaleontologic) study of the upper Cretaceous of continental Greece. In the inner zones the upper Cretaceous is transgressive, whereas in the outer zones sedimentation has been continuous since Jurassic time.
Sur les flores viseennes du Maroc
Authors: Danze-Corsin Paule
Published: March 2020

Summarizes the principal characteristics of Visean (Carboniferous) floras of Morocco, with particular reference to the results of a systematic study of plant assemblages from four specific localities. The floras are characterized by an abundance of lepidophytes, the constant presence of Asterocalamites, and the almost complete absence of ferns. Comparison with Visean floras of other regions shows that they are homogeneous throughout the world.
Observations sur la sedimentation houillere
Authors: Grangeon Marguerite
Published: March 2020

Observation of the details of sedimentation in limnic and paralic basins can aid paleogeographic reconstructions of coal basins. Examples of many types of sedimentation are described, most of them from Permo-Carboniferous lake basins of the Central Massif of France, and illustrated by photographs of drill cores.
La transgression ordovicienne sur les marges orientales de l'Armorique
Authors: Klein Claude
Published: March 2020

The purple schists and arkoses on the eastern margin of the Armorican massif, France, which discordantly overlie Brioverian rocks and grade imperceptibly into Armorican sandstones, are assigned to the Tremadocian and the base of the Arenig (Ordovician). In the Maine region, there is a stratigraphic gap between the Blandouet and Armorican sandstones, whereas in most of the synclines of Normandy, sedimentation was continuous from the Cambrian to the Silurian. A scheme of correlation between Normandy and Brittany is proposed based on the presumed stratigraphic equivalence of the so-called red series of the lower Ordovician (purple schists of Brittany, Sille psammites, Saint-Remy red shales).
Les conditions geologiques de la chute de Sassenage pres de Grenoble
Authors: Barbier Reynold
Published: March 2020

Geologic investigations showed that in spite of the degree of karst development, construction of an underground tunnel for a hydroelectric installation was possible in the vicinity of the Sassenage falls near Grenoble (France), in the area of the Sassenage fold-fault. Only two small cavities were encountered over a distance of some 3.5 kilometers. The results of the geologic studies that prepared the way for construction of the installation (which began operation in 1958) are summarized.
L'etage a niveaux charbonneux du Brioverien normand (X2a)
Authors: Roblot Marie Madeleine
Published: March 2020

Suggests that three carbonaceous microquartzite (phtanite) zones are present in the Brioverian complex of Normandy, France. They occur only in the Vardes stage (X 2a ). These recrystallized rocks contain microorganic remains resembling spores.
Contribution a la connaissance de l'Albien et du Cenomanien de la vallee de l'Asse (Basses-Alpes)
Authors: Thomel Gerard
Published: March 2020

A preliminary report on studies of the Cenomanian and Albian (Cretaceous) deposits of the Asse valley in the French Alps. Comparison of the outcrops and faunas of the Beynes and Chabrieres areas with those of neighboring regions shows that the valley region represents the zone of transition between neritic deposits characterized by a Vocontian facies and littoral deposits of Durancian shores.
Precisions sur la paleogeographie du flanc occidental du synclinal de Thones au Cretace moyen et superieur (Haute-Savoie)
Authors: Dondey Daniel
Published: March 2020

Study of facies variations in the Albian (Cretaceous) deposits along the west flank of the Thones syncline in Haute-Savoie, France, suggests that the limits of stratigraphic gaps in the Albian section, and in the upper Cretaceous, should be modified. The discovery of a Globotruncana linnei fauna in the highest beds of the folded upper Cretaceous sequence permits dating of east-west folding as having occurred between the Campanian-Maestrichtian and the Priabonian (Eocene).
Donnees nouvelles sur le Cretace subbetique au sud-est de Caravaca (prov. de Murcie, Espagne)
Authors: Paquet Jacques
Published: March 2020

The Quipar and Pena Rubia ranges southeast of Caravaca in Murcia, Spain, present a probably complete lower and middle Cretaceous section. The gradual passage from limestone deposition in the Tithonian (Jurassic) to deposition of Berriasian marls (lower Cretaceous) is reflected in the sequence. The different members of the Neocomian and Barremian are present. The Aptian could not be defined with certainty. The Albian is represented by blue micaceous marls carrying a pyritized ammonite fauna.
La Bresse et le Bas-Dauphine au Tertiaire
Authors: Lefavrais-Raymond Andree
Published: March 2020

Tertiary formations of the Bresse and lower Dauphine basins, France, are correlated and their paleogeography reconstructed. Conditions in both regions were similar during the Eocene and Oligocene, but differed considerably in the upper Tertiary, particularly in the Miocene. The Miocene section in lower Dauphine is very thick, whereas in Bresse it is very thin.
Subsidence differentielle de la plate-forme epicontinentale carbonifere dans le bassin d'Abadla (region de Colomb-Bechar)
Authors: Deleau Paul C.
Published: March 2020

Studies of a coal deposit on the northern and eastern margins of the Abadla basin, Algeria, have provided detailed information on the stratigraphy and sedimentation of the upper Westphalian C and Westphalian D (Carboniferous) beds of the basin. The basin is a large synclinorium subdivided into a series of secondary basins. The forests from which the coal was derived persisted for longer periods on the anticlinal uplifts on the northern margin than elsewhere. The most productive coal seams are found in several troughs in the anticlines. The troughs are the product of differential epeirogenic subsidence, and thicker sequences were developed in those which were more frequently emergent.
Un massif granitique a structures concentriques, le Tisselliline
Authors: Bouvet Michel , Reboul C.
Published: March 2020

Four principal type of granite are recognized in the Adrar Tisselliline, a granitic massif intruding the Pharusian (Precambrian) Serouenout basin in the northeastern Ahaggar mountain region, Algeria. These form concentric zones and apparently do not represent a single facies.
Sur la stratigraphie des series antecambriennes dans la region du Tafassasset moyen (Ahaggar oriental)
Authors: Blaise Jacques
Published: March 2020

Studies of the Precambrian formations in the central Tafassasset area of the eastern Ahaggar mountains (Algeria) in the Sahara cast doubt on the existence of a Suggarian horst east of the great fault at 8 degrees 30'. The formations are difficult to distinguish from Pharusian formations to the north and south.
Sur la presence du genre Anabacia Milne-Edwards non d'Orbigny dans le Toarcien inferieur des Pyrenees catalanes
Authors: Baudrimont Albert Frederic , Beauvais M.
Published: March 2020

A new species, Anabacia ilerdensis, from the lower Toarcian (Jurassic) Hildoceras bifrons marly limestones of the Catalonian Pyrenees (Spain) is reported and described.
Observations nouvelles sur les accidents siliceux situes au sommet de la "Pierre de Caen"
Authors: Dangeard Louis , Rioult M.
Published: March 2020

Large numbers of silicified tubelike structures of remarkably uniform diameter, characteristically elliptical in cross section, occur in middle Bathonian (Jurassic) sedimentary rocks of the Caen region of Normandy, France. These tubes range in thickness from one to five centimeters, with lengths of as much as three meters. Typically, they consist of a highly silicified axial portion in a less silicified envelope, with surrounding rock unaffected. All gradations are found, however, ranging in a complete series from incipient silicification of the axial portion only, to intense silicification extending some distance into the surrounding rock. Associated faunal microdetritus comprises sponge spicules, foraminifera, and fragments of bryozoans, mollusks, and echinoderms. The tubes are believed to be of vegetal origin. Their characteristics suggest that they were mangrove roots, silicified at very shallow depth.
L'oeuvre d'Andre Duparque (1892-1960)
Authors: Delattre Charles , Pruvost P.
Published: March 2020

A biographic account of the French coal geologist A. Duparque, who, among geologists of his generation, stood out as a tenacious investigator responsible for rapid progress in the understanding of coal against seemingly unsurmountable obstacles. A bibliography of his publications is appended.
La question des conditions probables du climat de l'Autunien et du Saxonien de l'Europe centrale et occidentale
Authors: Falke Horst
Published: March 2020

The similarity of upper Carboniferous and Autunian (lower Permian) floras and of faunas, and most of the Autunian sediments, indicates a hot, humid climate interrupted by several dry periods during the Autunian. Saxonian (middle Permian) fauna and sediments show increasing dryness without reaching actual desert climate until the end of the epoch. Conditions differed from basin to basin during both the Autunian and the Saxonian, and relief greatly influenced the climate. Thus flora, fauna, and climate require interpretation with great care. Textures of eolian sedimentary deposits of the Permian give some information concerning prevailing wind directions and atmospheric conditions, but paleomagnetic conditions are poorly known.
Position des diabases-porphyrites dans la region de Cetraro-Intavolata et de Sangineto (Calabre, Italie meridionale)
Authors: Bousquet Jean Claude
Published: March 2020

In the Sangineto-Cetraro-Intavolata area of the coast range of northwestern Calabria (southern Italy) the diabase-porphyrite series of upper Triassic age has been described for many years as resting stratigraphically upon an upper phyllite series underlain by the Cetraro limestone (Triassic ?). Recent work shows that the upper phyllite series actually is the quartzite flysch of nearby areas, and that in the northern part of the area, the diabase-porphyrite series rests upon the schists below the Cetraro limestone. The Quitzow stratigraphy of the region now must be abandoned and the diabase-porphyrite series placed in a new context.
Le synclinal danien-eocene de La Mourotte (Var)
Authors: Touraine Fernand
Published: March 2020

Results of a stratigraphic and tectonic study of the Mourotte syncline, Provence, France, divide the structure into three parts. The northern part is composed of Hauterivian littoral beds containing Danian dinosaur eggs. The Danian limestone-sandstone series disappears at La Neuve while the marly upper Danian beds continue to the extreme northern limit of the syncline. In the central part the Hauterivian wedges out, and toward its southern limit the substratum is entirely upper Jurassic. In the southern part, the Danian limestones are only visible on the northeast border. Bird eggs collected in the area assign the southern part of the syncline to the Thanetian. Overturning is less noticeable in the north, becoming acute toward the south where the syncline is tightly overturned.
Etude tectonique de la zone des breches du massif de Sainte-Victoire dans la region du Tholonet (Bouches-du-Rhone)
Authors: Durand Jean Pierre , Tempier Claude
Published: March 2020

The structure of the Tholonet breccia zone is characterized by block fracturing and by a south plunging anticline. The Infernet gorge section shows normal superposition of the Rognacian over the Begudian breccia which resulted from pre-Maestrichtian orogenic movements. The Montian breccia, which lies discordantly above, marks a tectonic phase which, at the beginning of the Eocene, affected the new Sainte-Victoire anticline. With the exception of the Roques-Hautes area, where the brecciated facies extends throughout the Rognacian, the two main conglomeratic beds are of Begudian and Montian age, as in the area north of Saint Antonin. The breccias correspond to pebble deposits in a lake or a frequently inundated depression. The upper Eocene folding caused the north-northeast-south-southwest flexure at Doudon.