Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Régis Roy"'
Publikováno v:
Canadian Journal of Earth Sciences. 57:1349-1364
Infrared (IR) spectroscopy has been used to characterize clay and clay-sized minerals present in drill cores that are associated with unconformity-related uranium deposits. Physical properties have been measured on samples to gain empirical data abou
Autor:
Camille, Chautard, Catherine, Beaucaire, Martine, Gerard, Régis, Roy, Sébastien, Savoye, Michael, Descostes
Publikováno v:
Journal of environmental radioactivity. 218
As with other metals, the management of tailings from former uranium (U) mines requires a good knowledge of the geochemical mechanisms governing the retention of radioelements of interest: U and
Publikováno v:
Canadian Journal of Earth Sciences. 54:869-882
In unconformity-related uranium deposits, mineralization is associated with hydrothermal clay-rich alteration haloes that decrease the density of the host rock. In the Kiggavik uranium project, located in the eastern Thelon Basin, Nunavut (Canada), b
Autor:
Adel Mesbah, Karl Lelievre, Adrien Pouradier, Régis Roy, Daniel Beaufort, Nicolas Dacheux, Benoit Hebert, Valentin Robin, Fabien Baron, Ruslan Jikibayev, Stéphanie Szenknect
Publikováno v:
Journal of Geochemical Exploration
Journal of Geochemical Exploration, Elsevier, 2019, 199, pp.53-59. ⟨10.1016/j.gexplo.2019.01.003⟩
Journal of Geochemical Exploration, 2019, 199, pp.53-59. ⟨10.1016/j.gexplo.2019.01.003⟩
Journal of Geochemical Exploration, Elsevier, 2019, 199, pp.53-59. ⟨10.1016/j.gexplo.2019.01.003⟩
Journal of Geochemical Exploration, 2019, 199, pp.53-59. ⟨10.1016/j.gexplo.2019.01.003⟩
Coffinite (USiO4) is a common uranium-bearing mineral of roll-front uranium deposits. This mineral can be identified by the visible near infrared (Vis-NIR) portable field spectrometers used in mining exploration. However, due to the low detection lim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85b9a2fd1cc0bbce02fa53af2bd9d133
https://hal.archives-ouvertes.fr/hal-02048827/file/S0375674217307458.pdf
https://hal.archives-ouvertes.fr/hal-02048827/file/S0375674217307458.pdf
Autor:
Camille Chautard, Martine Gérard, Michael Descostes, Régis Roy, Sébastien Savoye, Catherine Beaucaire
Publikováno v:
Journal of Environmental Radioactivity. 218:106251
As with other metals, the management of tailings from former uranium (U) mines requires a good knowledge of the geochemical mechanisms governing the retention of radioelements of interest: U and 226Ra. This article presents the results of the study o
Autor:
Jean-Marc Rouaud, Christian Boulet, Patrice G. Mestayer, Manuel Giraud, Zeineb Kassouk, Patrick Launeau, Françoise Debaine, Régis Roy
Publikováno v:
International Journal of Remote Sensing
International Journal of Remote Sensing, Taylor & Francis, 2017, 38 (5), pp.1277-1311. ⟨10.1080/01431161.2017.1285080⟩
International Journal of Remote Sensing, Taylor & Francis, 2017, 38 (5), pp.1277-1311. ⟨10.1080/01431161.2017.1285080⟩
The management of trees in urban areas requires accurate maps, which are difficult to build in the dense patchwork of numerous material properties. Remote sensing is a useful technique that measures the response of all vegetation occurrences, includi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdbb31f798db6946aa9dda6f39e81a5c
https://hal.archives-ouvertes.fr/hal-02449201
https://hal.archives-ouvertes.fr/hal-02449201
Autor:
Martine Gérard, Georges Calas, Régis Roy, Vannapha Phrommavanh, Jérémy Nos, C. Chautard, Michael Descostes, Catherine Beaucaire, L. Galoisy
Publikováno v:
Procedia Earth and Planetary Science
Procedia Earth and Planetary Science, 17, pp.308-311, 2017, ⟨10.1016/j.proeps.2016.12.067⟩
Procedia Earth and Planetary Science, 17, pp.308-311, 2017, ⟨10.1016/j.proeps.2016.12.067⟩
he uranium (U) mining site of Bois Noirs Limouzat located in the central France, produced 7,000 tons of U from 1959 to 1980. Tailings containing non extracted U and its radioactive progenies are currently stored under water in a basin extending over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e1e3a27f3e1d66da6bdedbd7ccf3c89
https://hal.science/hal-03952151
https://hal.science/hal-03952151
Publikováno v:
Journal of Geochemical Exploration
Journal of Geochemical Exploration, Elsevier, 2017, 172, pp.71-88. ⟨10.1016/j.gexplo.2016.09.008⟩
Journal of Geochemical Exploration, Elsevier, 2017, 172, pp.71-88. ⟨10.1016/j.gexplo.2016.09.008⟩
In mineral exploration, the search for geophysical, geochemical, and mineralogical pathfinders is of critical importance, and many techniques have been used to detect the presence of mineralization and related host-rock alteration. In the case of unc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c265f850894f87e371119326c75dec4e
https://hal.univ-lorraine.fr/hal-02483104
https://hal.univ-lorraine.fr/hal-02483104
Autor:
Flora Boekhout, Laurence Galoisy, Michael Descostes, Georges Calas, Régis Roy, Vannapha Phrommavanh, Adrien Déjeant
Publikováno v:
The Science of the total environment.
This study investigated the evolution of uranium distribution and speciation in mill tailings from the COMINAK mine (Niger), in production since 1978. A multi-scale approach was used, which combined high resolution remote sensing imagery, ICP-MS bulk