bluuebunny/crossref_metadata_2025_split huggingface dataset:
Etude biometrique et statistique de Nummulites laevigatus Bruguiere dans les bassins de Paris et du Hampshire; implications stratigraphiques
Authors: Blondeau A. 
Published: June 2020

Abstract
Biometric and statistical analysis of approximately 4500 specimens of Nummulites laevigatus from the Paris basin and from Hampshire (Wight, England), indicates that this species belongs to the lower Lutetian (Eocene), and that the enclosing beds are equivalent to the Bracklesham and the Fisher beds VI and VII of England and the Bruxellian of Belgium. N. laevigatus forms only one biozone. Among the results of the study are the recognition of a diminishing frequency in the irregularity and loose coiling of the spire in favor of regularity and tight coiling, from the base to the top of the lower Lutetian, and the dominance of flattened forms in the older lower Lutetian outcrops.
Les laves et les pegmatitoides du volcan des Rives (Herault)
Authors: Remy Jean Marcel 
Published: June 2020

Abstract
The lavas of the Rives volcano are ankaramites, having flow structure with phenocrysts and microlites of olivine and clinopyroxene. The Rives pegmatitoids are light, crystalline rocks containing olivine with the same optical properties as that of the surrounding lavas. The structure of the rocks is rather complex, the pyroxenes and olivine being corroded by salic minerals. The chemical analyses of the minerals found in the lavas and in the pegmatitoids are compared. The primary cause of the pegmatitoid differentiation may be the presence of a volatile compound whose concentration does not result from normal magmatic evolution, and which resulted in the formation of differentiated alkalic rocks. The Rives pegmatitoids are clinopegmatitoids.
Quelques donnees stratigraphiques sur le Silurien des confins algero-marocains (Ben Zireg, Djebel Grouz et regions voisines)
Authors: Jaeger Hermann , Massa Dominique 
Published: June 2020

Abstract
Silurian outcrop zones are limited, in the Colomb-Bechar basin, to the Ben Zireg anticline and to exposures resulting from the southern Atlas flexure and bordering faults (Hassi-el-Diab, Teniet-Ghenia). In the area, the Valentian is missing; the Wenlock is transgressive; the Ludlovian is very thin, beginning with the Monograptus deubeli zone; the upper Budnanian and basal Lochkovian (M. uniformis, M. praehercynicus horizons) are present. The Emsian overlies basal Lochkovian beds or lowest Lochkovian, with the Siegenian missing. In general, in the northeast part of the Colomb-Bechar basin the Silurian thins rapidly from south to north. At Hamar Lagdad the Silurian is also condensed; the lower Silurian interval, transgressive on the Caradocian, is upper Valentian; Kopanina and Pridoli equivalents are present while the Lochkovian is represented by intraformational cineritic tuffs which underlie the Hamar Lagdad bioherm (Emsian).
Importance des constructions algaires dues a des cyanophycees dans les formations continentales du Cretace superieur et de l'Eocene du Languedoc
Authors: Freytet Pierre , Plaziat Jean Claude 
Published: June 2020

Abstract
The upper Cretaceous and lower Tertiary continental sediments of the Languedoc region, in southern France, contain numerous fossil algal structures of various shapes and sizes, previously supposed to be concretions. The algae principally represented are forms with affinities to living Rivularia haematites of the Cyanophyceae. The morphology of the structures varies with the mode of deposition. Forms subject to flood currents are algal balls and incrustations on shells. Those in calmer zones are characterized by larger cylindrical forms.
Sur la position stratigraphique des gres de Gassa (Niger occidental)
Authors: Machens Eberhard , Reichelt Rudolf 
Published: June 2020

Abstract
The Gassa sandstone near Tillaberi in western Niger, shown on the 1960 geologic map of western Africa (l:2,000,000) as provisionally assigned to the Paleozoic, is an Infracambrian formation deposited on the Precambrian basement and overlain by the Infracambrian Ydouban group. The Gassa sandstone thus is the stratigraphic equivalent of the Firgoun sandstone in the Gourma basin.
Sur la microfaune du gisement lutetien de Puits-Neuf, commune de Bois-de-Cene (Vendee); etude paleontologique et paleogeographique
Authors: Margerel Jean Pierre , Ters M. 
Published: June 2020

Abstract
A rich foraminiferal and ostracod fauna occurs in Lutetian (Eocene) deposits near Puits-Neuf in the Verie river valley, western France. The fauna is of latest Lutetian age and indicates a littoral environment.
Sur la presence de dolomite dans les 'terres noires' de l'anticlinorium de Laragne (Hautes-Alpes); interpretation paleo-oceanographique
Authors: Artru Philippe 
Published: June 2020

Abstract
Middle Jurassic (Bathonian) and upper Jurassic (Callovian-lower Argovian) dark-colored shales and marls of Hautes-Alpes, France, locally known as the 'terres noires,' contain abundant microcrystalline dolomite in the lower (Bathonian) part. Mixed detrital sediments and carbonates in the lower part contrast with essentially terrigenous strata in the upper (Callovian-Oxfordian) part. The Bathonian depositional basin was isolated by sills and probably contained magnesium-rich waters of low pH; at the beginning of the upper Jurassic the basin became more open and dolomite formation ceased.
Sur la geologie de l'Egee; regard sur la Crete (Grece)
Authors: Aubouin Jean , Dercourt Jean 
Published: June 2020

Abstract
The oldest rocks exposed on Crete (Greece) are Paleozoic? metamorphic rocks. Five series are represented in the overlying sedimentary cover, whose deposition took place in a geosynclinal environment from Triassic to Eocene time. Molasse deposits are the principal representatives of the late geosynclinal phase (Miocene); marls and limy sandstones and conglomerates were formed during the postgeosynclinal phase (Pliocene). Major faults are the dominant tectonic feature of the island. Two nappes are identified: the Pindus nappe on which the ophiolitic (sub-Pelagonian) nappe is superimposed in places. Differential uplift and intense normal faulting have broken the island into a number of massifs separated by lowlands.
Metallogenie du massif de l'Arize
Authors: Perseil Elena Adriana , Tourenq Claude 
Published: June 2020

Abstract
A map is presented of the metallic deposits of the Arize massif (French Pyrenees). Particular emphasis is given to Paleozoic sulfide veins associated with the Foix granite and the deposits near the basement contact at the northern border of the massif. The deposits associated with the Foix granite reflect hydrothermal zonation related to satellite veins of the granite. Lead-zinc and copper deposits along the Arize massif borders are associated with faults and occur as veins, veinlets, or impregnations.
La metallogenie de la France
Authors: Laffitte Pierre 
Published: June 2020

Abstract
A regional metallogenic study of the ore deposits of France in relation to their geologic settings is presented. Twenty-three areas, subdivided into 100 districts, are thus defined and 300 deposits or possible deposits are categorized. Five metallogenic provinces are suggested. Two formed during the Hercynian (late Paleozoic)--the Gaules and the Sardo-Provencal; a fractured border; an internal Alpine zone; and a Pyrenean trough. Particular attention is given to regional zonation which is manifested in the chemistry of the successive Paleozoic mineralizations. The fracturing of the crust prior to the Caledonian (early Paleozoic) is discussed. Examples are presented of the relation of ore deposition to tectonics.
Donnees nouvelles sur les terrains paleozoiques de l'Argentella-Tour Margine (Corse); attribution a la limite devono-carbonifere du calcaire de Capitello
Authors: Krylatov Serge; Mamet 
Published: June 2020

Abstract
The series of rocks which unconformably overlies an older metamorphic series of the Argentella-Tour Margine area, northwestern Corsica (France), is primarily composed of detrital sedimentary formations, some of which contain elements suggesting volcanism, also represented by albitophyric flows. This series, considered as Dinantian (lower Carboniferous) until now, is, in fact, older. The Capitello limestone, capping the series, contains foraminiferal assemblages whose position in the Avesnois reference series is well known as the Famennian-Tournaisian (Devonian-Carboniferous) boundary. As the major part of the sedimentary series is older, the Devonian must be extensively represented.
Un episode des eruptions sancyitiques du Mont-Dore enregistre a Coudes (Puy-de-Dome)
Authors: Bout Pierre 
Published: June 2020

Abstract
In several localities of the Puy-de-Dome department (Central Massif, France) fluvial deposits with pumice, ash, and volcanic minerals outcrop. Study of the mineral composition of these outcrops establishes close analogies among them and makes it possible to tie in their volcanic minerals with a single period of acidic activity of the Mont-Dore volcano. The mammalian fauna in the contemporaneous alluvium is middle Pleistocene; paleomagnetic determinations and K/Ar dates on the flows verify this age.
Contribution a l'etude des gisements volcano-lacustres a diatomees de la region de Rochessauve et de Saint-Bauzile (Ardeche)
Authors: Ehrlich Aline 
Published: June 2020

Abstract
The upper Miocene diatomaceous sediments of the northeast border of the Coiron massif (Ardeche, France) indicate a shallow-water lacustrine environment. Until now the outcrops at Andance and Ranc-Le Combier have been considered as part of the same lacustrine deposition, but paleoecologic studies suggest that they formed independently. At Andance, diatomaceous sedimentation was continuous until the eruption of the Coiron plateau basalts, while at Ranc a hiatus occurs between the lower and upper diatomites.
Donnees geophysiques sur la structure profonde du Diois et des Baronnies
Authors: Flandrin Jacques , Weber Christian 
Published: June 2020

Abstract
Aeromagnetic and gravimetric studies made in the region of the Diois and Baronnies mountains (French Prealps) indicate a clear relation between deep structure and many surface structures. In particular, the basement took part in three displacements, the two great north-south faults of Saillans-Merindol and Die-la Motte-Chalancon, and the northeast-trending Clery fault. On the other hand, the east-west folds affecting the Mesozoic and Tertiary are definitely shallow decollements in which the basement did not participate.
A propos des conglomerats antenummulitiques des Alpes de Provence
Authors: Lapparent Albert F. de 
Published: June 2020

Abstract
Some stratigraphic observations lead to assignment to the lower Eocene of the pre-Nummulitic conglomerates frequently developed between the Cretaceous and the Eocene in the Alps of Provence [France]. These 'Argens conglomerates' or 'Microcodium conglomerates,' as they are still called, are of continental origin and very different from the upper Cretaceous.
Esquisse geologique de la peninsule Rallier du Baty, archipel de Kerguelen, terres australes et antarctiques francaises
Authors: Nougier Jacques 
Published: June 2020

Abstract
The geologic structure of the Rallier du Baty peninsula (Kerguelen islands) is characterized by basaltic flows with an andesitic tendency, intruded by a volcano-pluton of quartziferous syenites which metamorphosed the basalt near its contacts. Recent superimposed acid volcanism is present, and fumarolic activity has been noted on the west coast.
Quelques observations sur les rapports des filons a antimoine des environs du Collet-de-Deze (Lozere) avec leur environnement geologique
Authors: Roger Guy 
Published: June 2020

Abstract
Mapping of a sector [of France] situated south of Mont Lozere (central Cevennes) shows that antimony veins are localized in horizons rich in quartz, feldspars, and sometimes calcic minerals, and never in mica schists rich in phyllites. This control is valid only for stibnite veins, and not for lead-zinc veins. All of these massive layers include various sulfides, usually disseminated, sometimes in thin beds or small veinlets, without apparent connection to the veins or fissures. Problems concerning the origin of these disseminated sulfides and their relations to the veins are posed.
Macroforaminiferes de l'Eocene de Colombie
Authors: Butterlin Jacques 
Published: June 2020

Abstract
Some species of macroforaminifera from the middle and upper Eocene, described for the first time from Colombia, are illustrated. The polymorphism of Helicostegina polygyralis (Barker) is shown, as well as the change in form of Nummulites willcoxi Heilprin in the course of its growth.
Presence du genre Gagaria (echinide regulier temnopleuride) dans l'Eocene moyen de la vallee du Senegal
Authors: Elouard P. , Roman Jean 
Published: June 2020

Abstract
The genus Gagaria, known in the Eocene of the Indian peninsula, is noted for the first time in the lower Lutetian of the Senegal-Mauritania sedimentary basin. It is represented by G. foutatoroensis n. sp., whose mode of occurrence is defined. Comments on the associated fauna and on the environment where this species must have lived are given. G. foutatoroensis is interesting because of its relationships with several genera (Thylechinus, Orthechinus, Triplacidia) existing at the same time, especially in Senegal and Egypt.
Gisements nouveaux de la faune cernaysienne (mammiferes paleocenes de France)
Authors: Russell Donald E. , Louis Pierre , Poirier Max 
Published: June 2020

Abstract
Paleocene mammals have recently been discovered at two new localities, one in a shell-bearing lentil exposed near Berru and the other in marls at Rilly-la-Montagne (Marne, France). From the specimens collected, knowledge of the anatomy of several species has been improved. Bessoecetor? levei n. sp., Remiculus? n. sp., and an unnamed new genus and species of the Arctocyonidae are established. Comparison with the classic locality at Cernay (near Rheims) is difficult due to an insufficient number of complete fossils.
Sur l'existence et l'age des deux phases regionales de metamorphisme alpin dans les zones internes des Hellenides en Macedoine centrale (Grece)
Authors: Mercier Jacques 
Published: June 2020

Abstract
Two regional phases of alpine metamorphism developed contemporaneously in the inner zones of the Hellenides: the first phase was after the Triassic, probably in the upper Jurassic, and earlier than the upper Maestrichtian or even the Aptian-basal Albian; the second phase was after the upper Maestrichtian but before the lower Oligocene, probably in the Priabonian. In addition, a phase of dynamic metamorphism was manifest locally in the foreland of the Serbo-Macedonian massif, in volcanic and tuffaceous formations of middle-upper Eocene age; it was contemporaneous with the late Priabonian tectonic phase. Hercynian and pre-Hercynian cores are both represented in the inner Hellenides and were affected by the alpine metamorphism.
Etude geologique de la region de Come et de la Brianza occidentale (Alpes meridionales, Italie)
Authors: Vicente Jean Claude 
Published: June 2020

Abstract
The sedimentary series of the Como-Brianza region is exclusively marine, represented by formations of Jurassic to Pliocene age which are divided into three groups by two major unconformities, in the Oligocene and Pliocene respectively. Wide facies variations are characteristic of the series, notably the calcareous-siliceous deposits of the Jurassic and the upper Cenomanian and middle Campanian flysch deposits. The sediments are similar to those of the Lombardy trough. The three groups of formations represent stages in the paleogeographic evolution of the area: geosynclinal (Jurassic-lower Tertiary), late geosynclinal (Oligo-Miocene), and postgeosynclinal (Pliocene).
Etude palynologique de l'Infralias de la peripherie du Morvan et comparaison avec les autres bordures du Massif Central
Authors: Lesage Marie Therese 
Published: June 2020

Abstract
Rhaetian-Hettangian associations of northeastern and eastern Morvan and south-southeastern Central Massif, Hettangian associations of western Central Massif, stratigraphy, paleogeography, France
La terminaison occidentale de la Kabylie des Babor (region d'Akbou); remarques sur la notion d'extrusion
Authors: Coutelle Alain 
Published: June 2020

Abstract
Triassic-Cretaceous lithostratigraphy, structural features, two narrow dislocated anticlines separated by a flat-bottomed syncline, review of various usages of the term tectonic extrusion, Algeria
Reconnaissance geologique dans l'Hindou Kouch oriental (Badakhchan, Afghanistan)
Authors: Bordet Pierre , Boutiere Andre 
Published: June 2020

Abstract
Two tectonic units separated by the Pandjchir-Zebak fault, catazonal gneiss in recumbent folds to the north (Kokcha zones), granite to the south (Mounjan zone), petrography, Quaternary formations
Prevalence and associated factors of visual impairment among adults at Debre Berhan Town, North Shewa, Ethiopia
Authors: Assefa Natnael Lakachew , Admas Addisu , Adimasu Nebiyat 
Published: June 2020

Abstract
Background: Visual impairment refers to presenting distance visual acuity worse than 6/18 in the worst eye. It remains a global challenge that greatly affects the mobility, social participation and the quality of life of the people. This study was aimed to determine the prevalence and associated factors of visual impairment among adults aged 18 years. Methods: A community-based cross-sectional study was conducted at Debre Berhan town. Systematic random sampling method was employed to select the study participants from adult’s aged ≥ 18 years. Data were collected by interview with a pre-tested semi structured questionnaire. Both anterior and posterior segment ocular examinations were done by Optometrists and Ophthalmologist. After all ocular examinations adult’s aged ≥ 18 years with presenting Visual acuity of < 6/18 in the worst eye were considered as visually impaired. Multivariate logistic regression was used to identify the determinant factors and p value less than 0.05 was considered as statistically significant. Results: A total of 416 participants were enrolled in the study with a 98.6% response rate. The prevalence of visual impairment among adults aged 18 years was 16.8% (95% CI: 13.5%-20.2%). Among the overall prevalence of visually impaired adults 27 (6.49%) had bilateral VI and 43 (10.34%) had monocular VI. Aged > 64 years (AOR=12.18, 95%CI: 4.47-33.20), illiterates AOR=3.02, 95% CI: 1.36-6.72), previous eye trauma (AOR=4.44, 95% CI: 1.64-12.04), family size > 5 (AOR: 4.44, 95% CI: 1.43-13.75) and family history of eye problem (AOR=7.02, 95% CI: 1.95-25.22) had statistically significant association with visual impairment.Conclusions: Prevalence of visual impairment among adults was found to be a significant public health problem. Older age, illiterates, previous eye trauma, large family size and family history eye problem were positively associated with visual impairment.
Analysis of long non-coding RNA expression profiles in high-glucose treated vascular endothelial cells
Authors: Xu Erqin , Hu Xiaolei , Li Xiaoli , Jin Guoxi , Zhuang Langen , Wang Qiong , Pei Xiaoyan 
Published: June 2020

Abstract
Background: Diabetes mellitus is often associated with microvascular and macrovascular lesions, and hyperglycemia-induced vascular endothelial cell damage is a key factor.Methods：We investigated long non-coding RNAs (lncRNAs) and mRNAs that are affected by hyperglycemia-induced damage using human umbilical vein endothelial cells (HUVECs) as a model. HUVECs were cultured under high (25 mmol/L) or normal (5 mmol/L) glucose conditions for 6 d, and then lncRNAs and protein-coding transcripts were profiled by RNA-seq. Results：Among 40,379 lncRNAs screened, 214 were upregulated (log2 [fold-change] > 1, FDR < 0.05) and 197 were downregulated (log2 [fold-change] < −1, FDR < 0.05) in response to high-glucose. Furthermore, among 28,431 protein-coding genes screened, 778 were upregulated and 998 were downregulated. A total of 945 lncRNA/mRNA pairs were identified, including 126 differentially expressed lncRNAs predicted to target 201 mRNAs, among which 26 were cis-regulatory interactions. The corresponding lncRNA-mRNA network was composed of 354 lncRNA nodes, 1,167 mRNA nodes and 9,735 edges. Dozens of lncRNAs with high degree may play important roles in high-glucose-induced HUVEC damage, including ENST00000600527, NONHSAT037576.2, NONHSAT135706.2, ENST00000602127, NONHSAT200243.1, NONHSAT217282.1, NONHSAT176260.1, NONHSAT199075.1, NONHSAT067063.2, NONHSAT058417.2. Conclusion：These observations may provide novel insights into the regulatory molecules and pathways of hyperglycemia-related endothelial dysfunction in diabetes-associated vascular disease.
Cultural aspects of ants, bees and wasps and their products in sub-Saharan Africa
Authors: Huis Arnold Van 
Published: June 2020

Abstract
Background: The order Hymenoptera has about 117,000 known species of which about 20.000 in the Afrotropical zone. The families covered are ants, bees, and wasps. They belong to the suborder Apocrita, characterized by a constriction between the first and second abdominal segments. The purpose of the study was to make an overview of how ants, bees and wasps and their products such as honey are utilized, perceived, and experienced in daily life across sub-Saharan Africa.Method: Ethno-entomological information on ants, bees and wasps in sub-Saharan Africa was collected by: (1) interviews with more than 300 people from about 120 ethnic groups in 27 countries in the region; (2) library studies in Africa, London, Paris and Leiden.Results : Of the order of the Hymenoptera only queens of the ant Carebara vidua are deliberately eaten. Often unintentionally bee larvae are eaten with honey and sugar ants with sugar. Apart from honey being a food item, it is also widely used to treat numerous medical problems, as a stimulant (for the memory) or as a cosmetic. It is also used in naming or wedding ceremonies. In the Qur’an, the medical value of honey is recognized. Seed stores of ants maybe harvested by humans. In the Sudan bee stings are used to cure arthritis; bee venom having bioactive properties. Wasp nests are used to cure inflammations such as mumps. The properties of certain insects are used to convey these treats to persons it is employed to, such as nasty stinging wasps to make dogs vicious. Some stories seem to make no sense like the snake-trapping ants in Madagascar, but a scientific explanation is provided. The looks of certain insects may inspire people to construct stories or have proverbs such as the very narrow waste of wasps, suggesting sterility. Bee swarms and driver ants are feared all over and believed to be employed (by witchdoctors) to punish. Not all stories of events with bees or ants are similar across sub-Saharan Africa. These insects, being social, are also used to stimulate cohesion between people.Conclusion: Ants, bees and wasps in sub-Saharan Africa maybe feared because of their bites and stings. However, the insects or their products are often employed for medical reasons, honey having numerous applications. They are also many stories and believes in which the characteristics of these insects play a role.