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Sample records for carburan

  1. Sedimentary uranium deposits in France and French Union

    International Nuclear Information System (INIS)

    The author gives the actual state of our knowledge on uranium deposits found in recent years. Till now in precambrian formations only one important deposit has been found, at Mounana (Gabon) in a series of conglomeratic sandstones belonging to the 'Francevillien'. The observed mineralization is of the uranium-vanadium type. To the carboniferous formations corresponds in France a series of deposits, among which the most important ones are located at Saint-Hippolyte. Uranium as carburans, organic-bound complexes, is contained in lacustrine schists of Westphalian or lower Stephanian formations. A number of occurrences are also known in permo-triassic formations, particularly in the Vanoise Alps, in the Maritime Alps and in the Herault, where important occurrences have recently been found not far from Lodeve. The cretaceous and tertiary systems contain uranium deposits in phosphate rocks (Morocco, Senegal, Togo, Middle-Congo). Two sedimentary oligocene deposits are known in France. Lastly, the Vinaninkarena deposit in Madagascar, known for a long time, is the only important one reported in the quaternary series. (author)

  2. Sedimentary uranium deposits in France and French Union; Les gisements uraniferes dans les formations sedimentaires en France et dans l'Union francaise

    Energy Technology Data Exchange (ETDEWEB)

    Kervella, F. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-07-01

    The author gives the actual state of our knowledge on uranium deposits found in recent years. Till now in precambrian formations only one important deposit has been found, at Mounana (Gabon) in a series of conglomeratic sandstones belonging to the 'Francevillien'. The observed mineralization is of the uranium-vanadium type. To the carboniferous formations corresponds in France a series of deposits, among which the most important ones are located at Saint-Hippolyte. Uranium as carburans, organic-bound complexes, is contained in lacustrine schists of Westphalian or lower Stephanian formations. A number of occurrences are also known in permo-triassic formations, particularly in the Vanoise Alps, in the Maritime Alps and in the Herault, where important occurrences have recently been found not far from Lodeve. The cretaceous and tertiary systems contain uranium deposits in phosphate rocks (Morocco, Senegal, Togo, Middle-Congo). Two sedimentary oligocene deposits are known in France. Lastly, the Vinaninkarena deposit in Madagascar, known for a long time, is the only important one reported in the quaternary series. (author) [French] L'auteur fait le point des connaissances acquises sur les gisements decouverts dans les formations sedimentaires en France et dans l'Union francaise au cours des dernieres annees. Les gisements sont classes selon l'age de la formation dans laquelle on les observe. Les terrains precambriens n'ont pour l'instant fourni qu'un seul gisement notable; situe a Mouana (Gabon). C'est en decembre 1956 que cet important gisement fut decouvert dans une serie de gres conglomeratiques appartenant au Francevillien. La mineralisation observee est du type vanadium-uranium. Au carbonifere correspond en France metropolitaine une serie de gisements d'interet variable. Les plus importants sont ceux de Saint-Hippolyte (Haut-Rhin) ou l'uranium est contenu dans des schistes lacustres du Westphalien ou du

  3. IMPACTUL POLITICII ENERGETICE A FEDERAŢIEI RUSE ASUPRA SECURUTĂŢII REPUBLICII MOLDOVA

    Directory of Open Access Journals (Sweden)

    Natalia EREMIA

    2015-11-01

    Full Text Available În acest articol este cercetată o problemă foarte actuală – problema energiei. Energia a reprezentat şi continuă să reprezinte unul dintre cele mai importante resurse, fiind un domeniu de importanţă strategică, care determină statul să ţină sub control şi să intervină de fiecare dată când găseşte de cuviinţă. Sectorul energetic este un sector strategic funda-mental de care depinde atât economia naţională, cât şi securitatea Republicii Moldova. Fiind dependentă de importul de carburanţi, în prezent Republica Moldova nu-şi poate asigura securitatea energetică. Analizând situaţia geopolitică şi indiscutabila moştenire care este pusă la pământ, autorităţile sunt forţate să caute noi soluţii, cum ar fi: diversificarea surselor de energie, interconexiunea cu alte sisteme, atragerea de noi investiţii, demonopolizarea şi liberalizarea sectoru-lui energetic. Toate aceste obiective vor crea o platformă durabilă, care va contribui la crearea unei noi etape în dezvoltarea Republicii Moldova, caracterizată de un control eficient al consumului de energie şi de o integrare eficientă în reţea la scară mică de generare a resurselor. Republica Moldova trebuie să recâştige controlul asupra propriei industrii energetice – în special în domeniul gazelor naturale, precum şi în cel al electricităţii – o ramură strategică pentru orice ţară.THE IMPACT OF RUSSIAN FEDERATION'S ENERGY POLICY ON SECURITY OF THE REPUBLIC OF MOLDOVAThis article contains some important reflections on the current issue because energy is a fundamental strategic sector on which depends the evolution of the national economy as a whole and at the same time the security of the Republic of Moldova. Currently, the Republic of Moldova cannot fully ensure its energy security, because it is mostly dependent on imports. This is the reality in the country’s energy sector, admitting the inevitable geopolitical situation and the