Publications (111)
ARTICLE
Early observations of the MHONGOOSE galaxies: getting ready for MeerKAT
A. Sorgho, C. Carignan, D. J. Pisano, T. Oosterloo, W. J. G. de Blok, M. Korsaga, N. M. Pingel, Amy Sardone, S. Goedhart, S. Passmoor, A. Dikgale and S. K. Sirothia
We present early observations of 20 galaxies in the MHONGOOSE survey galaxies using KAT-7, the GBT, and MeerKAT. We present the best calibrators for five of the MHONGOOSE galaxies observed with the KAT-7, and search for signs of gas accretion in the GBT data, down to 3σ column density levels of 2.2× 10^{18} cm^{-2} over a 20 km s-1 line width,(...)
Mots clés non renseignés
ARTICLE
GEOLOGIE ET CHRONOLOGIE DE MISE EN PLACE DES FORMATIONS PALEOPROTEROZOIQUES DE LA REGION DU TOUGOURY, CEINTURE METALLOGENIQUE DE BOUROUM (CENTRE-NORD BURKINA FASO-AFRIQUE DE L’OUEST)
Herman Ilboudo, Sâga Sawadogo, Nicolas Kagambega, S. Toubiana, B. Nonguierma
Dans le secteur de Tougoury localisé dans le centre Nord du Burkina, les investigations géologiques basées sur une reconnaissance de terrain, renforcée par des études de lames minces, ont permis d’identifier et de caractériser plusieurs entités géologiques malgré la rareté des affleurements. Il s’agit de formations volcaniques basiques métamor(...)
Volcanites basiques, granitoïdes, filons, Chronologie, Tougoury, Burkina Faso, Afrique de l'Ouest
ARTICLE
Hydrogeochemical Characterization of Dug Well Water and Its Suitability for Domestic Water Supply in the Village of Passakongo, Dédougou municipality, Burkina Faso.
Aboubakar Sako, Sâga Sawadogo, Moïse Yoni, Mamadou Nimi, Ousseni Zongo, Ousmane Bamba
Hydrogeochemical characterization and suitability study of dug well water for domestic purpose were carried out
in a semi-arid rural village in Burkina Faso. Thirty water samples were collected from 15 wells in dry and wet
seasons, 2017. Electrical conductivity (EC) and total dissolved solids as well as major ions of all samples were
within(...)
domestic water supply, semi-arid, rural Burkina Faso, dug well, hydrochemistry
ARTICLE
GHASP: an Hα kinematics survey of spiral galaxies - XII. Distribution of luminous and dark matter in spiral and irregular nearby galaxies using Rc-band photometry
M. Korsaga, P. Amram, C. Carignan and B. Epinat
Mass models of 100 nearby spiral and irregular galaxies, covering morphological types from Sa to Irr, are computed using H α rotation curves and Rc-band surface brightness profiles. The kinematics was obtained using a scanning Fabry-Perot interferometer. One of the aims is to compare our results with those from Korsaga et al., which used mid-i(...)
galaxies: dwarf; galaxies: haloes; galaxies: kinematics and dynamics; galaxies: spiral; dark matter; Astrophysics - Astrophysics of Galaxies
ARTICLE
Hydrogeochemical and multi-tracer investigations of arsenic-affected aquifers in semi-arid West Africa
Anja Bretzler, Lucien Stolze, Julien Nikiema, Franck Lalanne, Elaheh Ghadiri, Matthias S. Brennwald, Massimo Rolle, Mario Schirmer
The semi-arid Sahel regions of West Africa rely heavily on groundwater from shallow to moderately deep (10 mg/L) stemming from the oxidation of sulphide minerals (pyrite, arsenopyrite) in mineralised zones. These aquifers are still little investigated, especially concerning groundwater residence times and the influence of the annual monsoon s(...)
Arsenic, Groundwater chemistry, West Africa, Fractured aquifers, Residence time, Noble gases
ARTICLE
Intrusion-related gold mineralization: Inata gold deposit, Bélahourou district, Northern Burkina Faso (West-Africa)
Herman Ilboudo, Sâga Sawadogo, Abraham Seydoux Traoré, Martial Sama, Urbain Wenmenga, Martin Lompo
The Inata cluster of gold deposits is one of ten gold deposits currently in exploitation in Burkina Faso. The aim of
this work was to assess the influence and contribution of the magmatic events in the metallogenic system. Our
approach is based on detailed field observation and petrography of different lithologies encountered in the main
pi(...)
West african craton, Burkina Faso, Inata, Birimian, Gold, Intrusion
ARTICLE
GHASP: an Hα kinematical survey of spiral galaxies - XI. Distribution of luminous and dark matter in spiral and irregular nearby galaxies using WISE photometry
M. Korsaga, C. Carignan, P. Amram, B. Epinat and T.H. Jarrett
We present the mass distribution of a sample of 121 nearby galaxies with high-quality optical velocity fields and available infrared Wide-field Infrared Survey Explorer(WISE) 3.4 μm data. Contrary to previous studies, this sample covers all morphological types and is not biased towards late-type galaxies. These galaxies are part of the Fabry-P(...)
galaxies: haloes; galaxies: irregular; galaxies: kinematics and dynamics; galaxies: spiral; dark matter; Astrophysics - Astrophysics of Galaxies
ARTICLE
The Belahourou granite pluton (Djibo Greenstone belt. Burkina Faso): Emplacement mechanism and implication for gold mineralization along a shear zone
Sâga Sawadogo, Séta Naba, Hermann Ilboudo, Abraham Seydoux Traoré, Samuel Nakolendoussé, Martin Lompo
The Belahourou granite pluton (BG pluton) is a magmatic body that belongs to the Djibo greenstone belt,
north Burkina Faso. Calc-alkaline in composition and 2132 ± 4 Ma in age (U-Pb zircon), this pluton is
bordered by the curved Belahourou-Souma (BS) sinistral shear-zone, NNW-trending in the northern half
of the pluton and WNW-trending in t(...)
Belahourou granite pluton, shear zones, Anisotropy of magnetic susceptibility, Gold mineralization
ARTICLE
Modeling of the Alteration Wedge in a Crystalline Basement Environment: Case Study of Burkina Faso Central Regions
Kafando Sayoba, Nakolendoussé Samuel, Nikiéma Julien
The alteration wedge is unevenly distributed in the central region of Burkina Faso. Outcrops of
crystalline rocks can be seen everywhere on the sheet. Water drilling data made it possible to highlight
this inequality. The frequency of the encountered alteration depths associated with the water productivity of the
underlying aquifers made(...)
lithology, phreatic surface, leaky phreatic aquifer, saturated alteration
ARTICLE
Modeling of the Alteration Wedge in a Crystalline Basement Environment: Case Study of Burkina Faso Central Regions
Kafando Sayoba, Nakolendoussé Samuel, Nikiéma Julien
The alteration wedge is unevenly distributed in the central region of Burkina Faso. Outcrops of crystalline rocks can be seen everywhere on the sheet. Water drilling data made it possible to highlight this inequality. The frequency of the encountered alteration depths associated with the water productivity of the underlying aquifers made it po(...)
lithology, phreatic surface, leaky phreatic aquifer, saturated alteration, outcrop
ARTICLE
Geology and gold occurrences of the Gombélédougou Paleoproterozoic terrane, Houndé belt in Burkina Faso (West-Africa)
ILBOUDO Hermann, TRAORÉ Abraham Seydoux , SAWADOGO Sâga, NONGUIERMA Bokkum, TOUBANIA Sienini
Les lithofaciès du secteur de Gombélédougou, au Sud du Burkina Faso, sont une composante intégrée de l’étendue ceinture de Houndé, longue de 225km et large de 40km. En dépit de l’étroitesse de la zone d’étude, les investigations de terrain appuyées par des études détaillées sur lames minces mettent en évidence une variété de faciès contribuant(...)
ceinture de Houndé, Gombélédougou, Veine aurifère, tuf andésitique, pélite
ARTICLE
GEOLOGY AND GOLD OCCURRENCES OF THE GOMBÉLÉDOUGOU PALEOPROTEROZOIC TERRANE, HOUNDÉ BELT IN BURKINA FASO (WEST-AFRICA)
ILBOUDO Hermann, TRAORÉ Abraham Seydoux, SAWADOGO Sâga, NONGUIERMA Bokkum, TOUBANIA Sienini
Les lithofaciès du secteur de Gombélédougou, au Sud du Burkina Faso, sont une composante intégrée de l’étendue ceinture de Houndé, longue de 225km et large de 40km. En dépit de l’étroitesse de la zone d’étude, les investigations de terrain appuyées par des études détaillées sur lames minces mettent en évidence une variété de faciès contribuant(...)
ceinture de Houndé, Gombélédougou, Veine aurifère, tuf andésitique, pélite
ARTICLE
Chemical composition, physicochemical characteristics and nutritional value of Lannea kerstingii seed and seed oil
Judicaël Thomas Ouilly, Patrice Bazongo, Adjima Bougma, Nèbpawindé Kaboré, Anne Mette Lykke, Amadé Ouédraogo and Imaël Henri Nestor Bassolé
The chemical composition, main physicochemical properties, and nutritional value of seed flour and seed oil of Lannea kerstingii were studied. The results indicated that seeds contained 3.61% moisture, 57.85% fat, 26.39% protein, 10.07% carbohydrates, and 2.08% ash. Potassium was the predominant mineral, followed by magnesium and calcium. The(...)
Mots clés non renseignés
ARTICLE
Groundwater arsenic contamination in Burkina Faso, West Africa: Predicting and verifying regions at risk
Anja Bretzler, Franck Lalanne, Julien Nikiema, Joel Podgorski, Numa Pfenninger, Michael Berg, Mario Schirmer
Arsenic contamination in groundwater from crystalline basement rocks in West Africa has only been documented in isolated areas and presents a serious health threat in a region already facing multiple challenges related to water quality and scarcity. We present a comprehensive dataset of arsenic concen trations from drinking water wells in rura(...)
Arsenic contamination, Drinking water, West Africa, Sulphide minerals, Hazard modelling, Health threat
ARTICLE
Géomorphologie et productivité des aquifères en milieu de socle cristallin : cas de la région du centre du Burkina Faso
KAFANDO S., NAKOLENDOUSSE S., NIKIEMA J., KOUSSOUBE I ., YAMEOGO S., COMPAORE Y., MILOGO C
L’étude est réalisée dans la région du centre au Burkina Faso, et elle a été possible grâce au traitement de données SRTM 30 m associé à une base de données de 1796 forages réalisés dans la zone d’étude. Le relief dans la zone d’étude présente des altitudes qui varient entre 205 et 519 mètres avec une moyenne estimée à 300 mètres. Cependant de(...)
hydrogéologie, topographie, altération, aquifère, débit, altitude, bed rock